Tensile tester for fiber spinning

Abstract

The invention relates to the technical field of fiber spinning tensile testing, in particular to a fiber spinning tensile tester. Comprising a bottom plate; the control panel is mounted at the top of the bottom plate; the mounting frame is connected to the top of the bottom plate; the hydraulic cylinders are symmetrically mounted on the mounting frame; the tension sensor is mounted on a telescopic rod of the hydraulic cylinder; the square frame is symmetrically and slidably connected to the mounting frame, and the top of the square frame is connected with the tension sensor. Under the action of the winding mechanism, roll-shaped fibers can be automatically pulled out and wound to the outer side of an empty winding drum, so that a to-be-tested area of the fibers can be automatically moved between the first clamping rollers on the upper side and the lower side, then the first clamping rollers are controlled to clamp the fibers, and the first clamping rollers are controlled to rotate automatically; according to the tension test device, the fiber can be automatically wound on the first clamping rollers on the upper and lower sides to be fixed, manual winding is not needed, then the first clamping rollers on the upper and lower sides are controlled to be far away from each other, the tension test of the fiber can be completed, the labor cost can be reduced, and the test efficiency can be improved.

Description

Technical Field

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

[0002] Fiber materials are a vital component of modern industry, and their mechanical properties directly impact the quality and application of final products. Among the numerous methods for evaluating the mechanical properties of fiber materials, tensile testing is one of the most fundamental and critical experiments. By applying an axial tensile load to simulate the stress state of the fiber during actual processing or use, the maximum load before breakage, deformation capacity, and elastic properties of the fiber can be effectively measured, thereby determining important parameters such as the fiber's tensile strength. This is crucial for ensuring the reliability and durability of fiber materials in various application scenarios.

[0003] With the advancement of technology, the variety of fiber materials is increasing, especially the application of some high-performance fibers, such as antibacterial composite polyester carbon fibers, which are becoming increasingly widespread. These fibers are required to possess not only excellent mechanical properties but also special properties, such as antibacterial properties. For such fibers, accurate evaluation of their mechanical properties is particularly important. However, tensile testing of antibacterial composite polyester carbon fibers faces a series of challenges. To ensure the accuracy and representativeness of the test data, at least 30 fibers must be randomly sampled from the same batch for testing. These 30 fibers must cover different positions of the yarn bobbin (such as the outer layer, middle layer, and inner layer) to avoid potential bias caused by fluctuations in the spinning process. Traditional tensile testing methods rely on manual operation, that is, manually wrapping the fiber ends around two nip rollers on both sides. The nip rollers then move in opposite directions to apply tension to the fiber for testing. After each test, broken fibers must be manually removed and re-tested. This operation is not only time-consuming and labor-intensive, but also inefficient. The limitations of manual operation are particularly apparent when processing large numbers of samples. In addition, human errors may occur during manual operation, affecting the accuracy of test results. Summary of the Invention

[0004] In view of this, the present invention provides a fiber spinning tensile tester, which can overcome the shortcomings of existing tensile testing equipment, which requires manual operation to frequently wrap the two ends of the fiber around the clamping rollers on both sides and remove the broken fibers, resulting in cumbersome operation and low testing efficiency.

[0005] A fiber spinning tensile tester includes: a base plate; a control panel mounted on the top of the base plate; a mounting frame connected to the top of the base plate; a hydraulic cylinder symmetrically mounted on the mounting frame; a tension sensor mounted on the telescopic rod of the hydraulic cylinder; a square frame symmetrically slidably connected to the mounting frame, and the top of the square frame is connected to the tension sensor; a first drive motor respectively mounted on the mounting frame and the square frame; a first rotating frame connected to the output shaft of the first drive motor; a first slider symmetrically slidably connected in the first rotating frame; a first clamping roller connected to the first slider; a moving component arranged on the first rotating frame for driving the first slider to move; and a fixing component arranged on the mounting frame for fixing the rolled fiber.

[0006] To further explain, the moving component includes: a first motor, installed on the side of the first rotating frame; a first bidirectional screw, rotatably connected in the first rotating frame, a first slider threadedly connected to the first bidirectional screw, and the end of the first bidirectional screw is connected to the output shaft of the first motor.

[0007] Further explanation: the fixed assembly includes: a rotating block, symmetrically connected to the mounting frame; a rotating rod, rotatably connected to the rotating block; a sliding plate, circumferentially slidingly connected to the rotating rod; a connecting spring, connecting the sliding plate and the rotating rod; a positioning mechanism, arranged on the rotating block, for positioning the rotating block; and a winding mechanism, arranged on the mounting frame, for winding the end of the rolled fiber.

[0008] Further description, the positioning mechanism includes: a first spring, connected to the rotating block; a first clamping block, slidably connected to the rotating block, and one end of the first spring is connected to the first clamping block, a first clamping slot is opened on the mounting frame, and the first clamping block is clamped in the first clamping slot.

[0009] To further explain, the winding mechanism includes: a second drive motor installed on the mounting frame; an insertion rod connected to the output shaft of the second drive motor, and a transverse groove is opened at the end of the lower rotating rod, and the insertion rod is located in the transverse groove.

[0010] Further description, it also includes: a mounting rod, connected to the top of the mounting frame; an electric push rod, installed on the mounting rod; a connecting block, connected to the telescopic rod of the electric push rod; a second rotating frame, rotatably connected to the connecting block; a second slider, symmetrically slidingly connected to the second rotating frame; a second clamping roller, connected to the second slider; a second motor, installed on the side of the second slider; a second bidirectional screw rod, rotatably connected to the second rotating frame, the second slider is threadedly connected to the second bidirectional screw rod, and the end of the second bidirectional screw rod is connected to the output shaft of the second motor; a locking mechanism is provided on the connecting block for locking the second rotating frame; a rotating mechanism is provided on the mounting frame for driving the second rotating frame to rotate.

[0011] Further explanation, the locking mechanism includes: a second spring, symmetrically connected to the connecting block; a second clamping block, symmetrically slidingly connected to the connecting block, and one end of the second spring is connected to the second clamping block, a second clamping slot is symmetrically opened on the top of the second rotating frame, the second clamping block is clamped in the second clamping slot, and a third clamping slot is symmetrically opened on the side of the second rotating frame.

[0012] Further explanation: the rotating mechanism includes: a third drive motor, installed on the mounting frame; a rotating disk, connected to the output shaft of the third drive motor; a vertical plate, connected to the side of the rotating disk; a third spring, symmetrically connected to the vertical plate; a third clamping block, symmetrically slidingly connected to the vertical plate, and one end of the third spring is connected to the third clamping block, and the third clamping block can be clamped in the third clamping slot.

[0013] Further description, it also includes: a fixed shell, connected to the side of the mounting frame; a collection frame, slidably connected to the fixed shell, and filter holes are evenly spaced on the sides of the fixed shell and the collection frame; a mounting plate, rotatably connected to the side of the mounting frame away from the fixed shell; and fans, installed at intervals on the mounting plate.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention can automatically pull out the rolled fiber and reel it to the outside of the empty reel through the action of the winding mechanism, so that the area of the fiber that needs to be tested can automatically move between the first clamping rollers on the upper and lower sides, and then control the first clamping roller to clamp the fiber, and control the first clamping roller to rotate, so that the fiber can be automatically wound around the first clamping rollers on the upper and lower sides for fixation, without the need for manual winding, and then control the first clamping rollers on the upper and lower sides to move away from each other to complete the tensile test of the fiber, which not only reduces labor costs but also improves test efficiency.

[0015] 2. The present invention can automatically pull the end of the rolled fiber to the outside of the empty reel and wind the end of the rolled fiber around the empty reel through the cooperation of the electric push rod, the second rotating frame, the second slider, the second clamping roller, the locking mechanism and the rotating mechanism, so that multiple tensile tests can be carried out continuously without human intervention, reducing errors caused by manual operation and ensuring data accuracy.

[0016] 3. The present invention can blow the broken fibers and the generated flocs into the fixed shell through the action of the fan, and filter them through the filter holes so that the broken fibers and flocs can fall into the collection frame, which is convenient for subsequent unified processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation of the first rotating frame, the first slider, the first clamping roller and the moving assembly of the present invention.

[0019] Figure 3 Schematic diagram of the installation of the fixing assembly of the present invention.

[0020] Figure 4 This is a schematic diagram of the installation of the sliding plate and the connecting spring of the present invention.

[0021] Figure 5 This is a schematic diagram of the installation of the first spring and the first clamping block of the present invention.

[0022] Figure 6 This is a schematic diagram of the installation of the mounting rod, electric push rod, connecting block and second rotating frame of the present invention.

[0023] Figure 7 This is a schematic diagram of the installation of the second slider, the second clamping roller, the second motor and the locking mechanism of the present invention.

[0024] Figure 8 It is a schematic diagram of the specific structure of the second rotating frame of the present invention.

[0025] Figure 9 This is a schematic diagram of the installation of the third drive motor, rotating disk and vertical plate of the present invention.

[0026] Figure 10 This is a schematic diagram of the installation of the third spring and the third clamping block of the present invention.

[0027] Figure 11 It is a schematic diagram of the specific structure of the fixed shell and the collection frame of the present invention.

[0028] In the above drawings: 1-base plate, 2-control panel, 3-mounting frame, 4-hydraulic cylinder, 5-tension sensor, 6-box, 7-first drive motor, 8-first rotating frame, 9-first slider, 10-first clamping roller, 11-first motor, 12-first bidirectional screw, 13-rotating block, 14-rotating rod, 15-sliding plate, 16-connecting spring, 17-first spring, 18-first block, 19-first slot, 20-horizontal slot, 21-second drive motor, 22-insertion rod, 23-mounting rod, 24-electric push rod, 25-connecting block, 26-second rotating frame, 27-second slider, 28-second clamping roller, 29-second motor, 30-second bidirectional screw, 31-second spring, 32-second clamping block, 33-second clamping slot, 34-third clamping slot, 35-third drive motor, 36-rotating disk, 37-vertical plate, 38-third spring, 39-third clamping block, 40-fixed shell, 41-collecting frame, 42-filter hole, 43-mounting plate, 44-fan. DETAILED DESCRIPTION

[0029] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] Example: A fiber spinning tensile tester, such as Figure 1-Figure 5 As shown, it includes a base plate 1, a control panel 2, a mounting frame 3, a hydraulic cylinder 4, a tension sensor 5, a frame 6, a first drive motor 7, a first rotating frame 8, a first slider 9, a first clamping roller 10, a moving component and a fixed component. The control panel 2 is installed on the top right front side of the base plate 1, and the mounting frame 3 is connected to the middle of the top of the base plate 1. Hydraulic cylinders 4 are installed on the left and right sides of the top of the mounting frame 3. Tension sensors 5 are installed on the telescopic rods of the two hydraulic cylinders 4. The left and right sides of the mounting frame 3 are slidably connected with frames 6. The frames 6 correspond to the tension sensors 5 one by one, and the top of the frame 6 is connected to the bottom of the corresponding tension sensor 5. Next, the first drive motor 7 is symmetrically installed on the lower part of the mounting frame 3, and the first drive motor 7 is installed inside the two square frames 6. The number of the first drive motors 7 is four and they correspond to each other. The output shafts of the four first drive motors 7 are connected to a first rotating frame 8. Each first rotating frame 8 is symmetrically connected to the first slider 9 for sliding back and forth. A first clamping roller 10 is connected between the two corresponding first sliders 9 on the left and right. The number of the first clamping rollers 10 is four and they correspond to each other. The first rotating frame 8 is provided with a moving component for driving the first slider 9 to move, and the mounting frame 3 is provided with a fixing component for fixing the rolled fiber.

[0031] like Figure 2 As shown, the moving assembly includes a first motor 11 and a first bidirectional screw rod 12. The first motor 11 is installed on the rear side of each first rotating frame 8. The first bidirectional screw rod 12 is rotatably connected inside each first rotating frame 8, and the first slider 9 in the first rotating frame 8 is threadedly connected to the first bidirectional screw rod 12. The rear end of the first bidirectional screw rod 12 is connected to the output shaft of the first motor 11.

[0032] like Figure 3-Figure 5As shown, the fixed assembly includes a rotating block 13, a rotating rod 14, a sliding plate 15, a connecting spring 16, a positioning mechanism and a winding mechanism. The left part of the mounting frame 3 is symmetrically connected to the rotating block 13 in upper and lower rotation. The two rotating blocks 13 are rotatably connected to the rotating rod 14. The two rotating rods 14 are circumferentially spaced and slidably connected to three sliding plates 15. The right end of the sliding plate 15 is an inclined surface to facilitate the insertion of an empty reel. A connecting spring 16 is connected between the sliding plate 15 and the rotating rod 14. A positioning mechanism for positioning the rotating block 13 is provided on the rotating block 13, and a winding mechanism for winding the end of the rolled fiber is provided on the mounting frame 3; the positioning mechanism includes a first spring Spring 17 and the first clamping block 18, the left sides of the two rotating blocks 13 are connected with the first spring 17, the left sides of the two rotating blocks 13 are slidably connected with the first clamping block 18, and the left end of the first spring 17 is connected to the right side of the first clamping block 18, the left sides of the two first clamping blocks 18 are both arc surfaces, and the upper and lower sides of the left part of the mounting frame 3 are provided with first clamping grooves 19, and the first clamping block 18 is clamped in the first clamping groove 19; the winding mechanism includes a second drive motor 21 and an insertion rod 22, and a transverse groove 20 is provided at the left end of the rotating rod 14 on the lower side, and a second drive motor 21 is installed on the left side of the lower part of the mounting frame 3, and the output shaft of the second drive motor 21 is connected with the insertion rod 22, and the insertion rod 22 is located in the transverse groove 20.

[0033] like Figures 6-10As shown, it also includes a mounting rod 23, an electric push rod 24, a connecting block 25, a second rotating frame 26, a second slider 27, a second clamping roller 28, a second motor 29, a second bidirectional screw 30, a locking mechanism and a rotating mechanism. The mounting frame 3 is connected to the right side of the top with the mounting rod 23, the electric push rod 24 is installed on the right side of the mounting rod 23, the telescopic rod of the electric push rod 24 is connected with the connecting block 25, the lower part of the connecting block 25 is rotatably connected to the second rotating frame 26, and the second slider 27 is symmetrically slidably connected to the front and back of the second rotating frame 26. The two second sliders 27 are connected to the second clamping roller 28, the second rotating frame 26 is installed on the rear side of the second motor 29, the second rotating frame 26 is internally rotatably connected to the second bidirectional screw rod 30, the two second sliders 27 are threadedly connected to the second bidirectional screw rod 30, and the rear end of the second bidirectional screw rod 30 is connected to the output shaft of the second motor 29, the connecting block 25 is provided with a locking mechanism for locking the second rotating frame 26, and the mounting frame 3 is provided with a rotating mechanism for driving the second rotating frame 26 to rotate; the locking mechanism includes a second spring 31 and a second block 32, The connecting block 25 is symmetrically connected to the second spring 31 inside, and the connecting block 25 is symmetrically slidably connected to the second clamping block 32 inside, and the lower end of the second spring 31 is connected to the top of the second clamping block 32. The bottoms of the two second clamping blocks 32 are both curved surfaces, and the top of the second rotating frame 26 is symmetrically opened with a second clamping groove 33. The second clamping block 32 is clamped in the second clamping groove 33. The right side of the second rotating frame 26 is symmetrically opened up and down. The rotating mechanism includes a third driving motor 35, a rotating disk 36, a vertical plate 37, a third spring 38 and a third clamping block. 39. A third drive motor 35 is installed on the right side of the lower part of the mounting frame 3. A rotating disk 36 is connected to the output shaft of the third drive motor 35. A vertical plate 37 is connected to the middle of the left side of the rotating disk 36. Third springs 38 are symmetrically connected to the inside of the vertical plate 37. A third clamping block 39 is symmetrically slidably connected to the inside of the vertical plate 37. The third clamping block 39 corresponds to the third spring 38 one by one, and the left end of the third spring 38 is connected to the right side of its corresponding third clamping block 39. The left side of each third clamping block 39 is an arc surface, and the third clamping block 39 can be clamped in the third clamping slot 34.

[0034] like Figure 1 and Figure 11 As shown, it also includes a fixed shell 40, a collection frame 41, a mounting plate 43 and a fan 44. The rear side of the mounting frame 3 is connected to the fixed shell 40, and the lower part of the fixed shell 40 is slidably connected to the collection frame 41, and the rear sides of the fixed shell 40 and the collection frame 41 are separated by multiple filter holes 42. The front left part of the mounting frame 3 is rotatably connected to the mounting plate 43, and six fans 44 are installed at intervals on the mounting plate 43.

[0035] When it is necessary to perform a tensile test on the antibacterial composite polyester carbon fiber, first rotate the mounting plate 43 forward to open it, and then rotate the rotating rod 14 forward ninety degrees with the rotating block 13 as the rotation center. At this time, the insertion rod 22 will disengage from the transverse groove 20, and the rotating rod 14 will drive the rotating block 13 and the first clamping block 18 to rotate ninety degrees, so that the first clamping block 18 is disengaged from the first clamping slot 19. At this time, the first clamping block 18 will be squeezed by the mounting bracket 3 to retract, and the first spring 17 will be compressed. Then, a roll of fiber is put on the outside of the upper rotating rod 14, and an empty roll is put on the outside of the lower rotating rod 14. The rolled fiber and the empty roll will squeeze the sliding plates 15 on the upper and lower sides respectively to retract. The connecting spring 16 is compressed, and under the elastic force of the connecting spring 16, the sliding plates 15 on the upper and lower sides are respectively pressed against the inner walls of the rolled fiber and the empty roll, thereby fixing the rolled fiber and the empty roll to the outer sides of the two rotating rods 14 respectively. Then the rotating rod 14 is rotated clockwise 90 degrees with the rotating block 13 as the rotation center to reset. At this time, the insertion rod 22 will be re-located in the transverse groove 20, and the rotating rod 14 will drive the rotating block 13 and the first clamping block 18 to rotate 90 degrees to reset, so that the first clamping block 18 is aligned with the first clamping slot 19. At this time, the first spring 17 will return to its original state, driving the first clamping block 18 to pop out and be clamped in the first clamping slot 19, thereby positioning the rotating block 13;Then the worker can pull out one end of the fiber and place it between the two second clamping rollers 28, and then rotate the mounting plate 43 backward to close it. At this time, the control panel 2 controls the second motor 29 to drive the second bidirectional screw rod 30 to rotate, and the second bidirectional screw rod 30 drives the second sliders 27 on the front and rear sides to move toward each other. The second slider 27 drives the two second clamping rollers 28 to move toward each other, so that the two second clamping rollers 28 clamp the ends of the fiber. Then the control panel 2 controls the electric push rod 24 to drive the connecting block 25 to move downward, and the connecting block 25 drives the second rotating frame 26, the second slider 27 and the second clamping roller 28 to move downward. The second clamping roller 28 can drive the end of the fiber to move downward, so that the fiber passes between the first clamping rollers 10 on the front and rear sides. When the second rotating frame 26 contacts the third clamping block 39, the second rotating frame 26 will squeeze the third clamping block 39 to move to the right to retract, and the third spring 38 is compressed. When the third clamping block 39 is aligned with the third clamping slot 34 on the second rotating frame 26, the third spring 38 will return to its original state, driving the third clamping block 39 to move to the left to pop out, and the third clamping block 39 is stuck in the third clamping slot 34. At this time, the end of the fiber just moves to the outside of the empty reel, and then the control panel 2 controls the third drive motor 35 to drive the rotating disk 36 The second rotating frame 26 is pressed against the second clamping roller 28, and the second clamping roller 28 is pressed against the second clamping roller 33, and the second clamping roller 33 is pressed against the second clamping roller 33, and the second clamping roller 33 is pressed against the second clamping roller 33, and the second rotating frame 26 ... After the second clamping roller 28 is retracted and the second clamping roller 28 is retracted, the second clamping roller 28 is retracted and the second clamping roller 28 is retracted.Then the control panel 2 controls the second drive motor 21 to drive the insertion rod 22 to rotate, and the insertion rod 22 cooperates with the transverse groove 20 to drive the lower rotating rod 14 to rotate, and the lower rotating rod 14 can drive the empty reel to rotate through the sliding plate 15, so that the fiber can be wound. When the area where the fiber needs to be tested is located between the first clamping rollers 10 on the upper and lower sides, the control panel 2 controls the second drive motor 21 to stop working, so that the empty reel stops rotating, and then the control panel 2 controls the first motor 11 on the lower side to drive the first bidirectional screw rod 12 on the lower side to rotate, and the first bidirectional screw rod 12 on the lower side drives the two first clamping rollers 10 on the lower side to move toward each other. The side that approaches moves to clamp the fiber, and then the control panel 2 controls the first driving motor 7 on the lower side to drive the first rotating frame 8 on the lower side to rotate, and the first rotating frame 8 on the lower side can drive the first clamping roller 10 on the lower side to rotate, so that the fiber is automatically wound around the outside of the first clamping roller 10 on the lower side. Similarly, the fiber can then be automatically wound around the outside of the first clamping roller 10 on the upper side, and then the control panel 2 controls the hydraulic cylinder 4 to drive the tension sensor 5 to move upward, and the tension sensor 5 drives the frame 6 to move upward, and the frame 6 can drive the first clamping roller 10 on the upper side to move upward, so that the first clamping rollers 10 on the upper and lower sides are moved away from each other, so that the fibers on the upper and lower sides can be wound around each other. The fibers between the first clamping rollers 10 are pulled, and the tension sensor 5 is used to monitor the tension on the fibers and upload the monitoring data to the control panel 2 for display. At the same time, the control panel 2 controls the fan 44 to blow air backward until the fibers between the first clamping rollers 10 on the upper and lower sides are broken. The flocs generated when the fibers are broken will be blown into the fixed shell 40. Then the control panel 2 controls the hydraulic cylinder 4 to drive the tension sensor 5 to move downward. The tension sensor 5 drives the frame 6 and the first clamping roller 10 on the upper side to move downward and reset. At the same time, the control panel 2 controls the first motor 11 to drive the first bidirectional screw rod 12 to reverse. The first bidirectional screw 12 drives the front and rear first nip rollers 10 to move away from each other. The first nip rollers 10 break the fibers wrapped around them, and the broken fibers are blown into the fixed housing 40. The filter holes 42 filter the fibers, leaving the flocs and broken fibers inside the fixed housing 40. The control panel 2 then stops the fan 44, and the flocs inside the fixed housing 40 fall into the collection frame 41. Repeat this process to test other parts of the coiled fiber. After testing, the collection frame 41 can be pulled back and the flocs inside can be removed for unified processing.

[0036] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A fiber spinning tensile tester, comprising: a bottom plate (1); characterized in that, The invention also includes: a control panel (2) mounted on the top of the base plate (1); a mounting frame (3) connected to the top of the base plate (1); a hydraulic cylinder (4) symmetrically mounted on the mounting frame (3); a tension sensor (5) mounted on the telescopic rod of the hydraulic cylinder (4); a square frame (6) symmetrically slidably connected to the mounting frame (3), and the top of the square frame (6) is connected to the tension sensor (5); a first drive motor (7) mounted on the mounting frame (3) and the square frame (6), respectively; a first rotating frame (8) connected to the output shaft of the first drive motor (7); a first slider (9) symmetrically slidably connected in the first rotating frame (8); a first clamping roller (10) connected to the first slider (9); a moving component arranged on the first rotating frame (8) for driving the first slider (9) to move; and a fixing component arranged on the mounting frame (3) for fixing the rolled fiber.

2. A fiber spinning tensile tester according to claim 1, characterized in that: The moving assembly includes: a first motor (11) installed on the side of the first rotating frame (8); a first bidirectional screw rod (12) rotatably connected in the first rotating frame (8); a first slider (9) and the first bidirectional screw rod (12) are threadedly connected, and the end of the first bidirectional screw rod (12) is connected to the output shaft of the first motor (11).

3. A fiber spinning tensile tester according to claim 2, characterized in that: The fixing assembly comprises: a rotating block (13) symmetrically connected to the mounting frame (3); a rotating rod (14) rotatably connected to the rotating block (13); a sliding plate (15) slidably connected to the rotating rod (14) at circumferential intervals; a connecting spring (16) connecting the sliding plate (15) and the rotating rod (14); a positioning mechanism provided on the rotating block (13) for positioning the rotating block (13); and a winding mechanism provided on the mounting frame (3) for winding the end of the rolled fiber.

4. A fiber spinning tensile tester according to claim 3, characterized in that: The positioning mechanism includes: a first spring (17) connected to the rotating block (13); a first clamping block (18) slidably connected to the rotating block (13), and one end of the first spring (17) is connected to the first clamping block (18). A first clamping groove (19) is formed on the mounting frame (3), and the first clamping block (18) is clamped in the first clamping groove (19).

5. A fiber spinning tensile tester according to claim 4, characterized in that: The winding mechanism comprises: a second driving motor (21) mounted on a mounting frame (3); an insert rod (22) connected to an output shaft of the second driving motor (21); a transverse groove (20) is formed at the end of the lower rotating rod (14), and the insert rod (22) is located in the transverse groove (20).

6. A fiber spinning tensile tester according to claim 5, characterized in that: The invention also includes: a mounting rod (23) connected to the top of the mounting frame (3); an electric push rod (24) mounted on the mounting rod (23); a connecting block (25) connected to the telescopic rod of the electric push rod (24); a second rotating frame (26) rotatably connected to the connecting block (25); a second slider (27) symmetrically slidably connected to the second rotating frame (26); a second clamping roller (28) connected to the second slider (27); a second motor (29) mounted on the side of the second slider (27); a second bidirectional screw rod (30) rotatably connected to the second rotating frame (26), the second slider (27) being threadedly connected to the second bidirectional screw rod (30), and an end of the second bidirectional screw rod (30) being connected to the output shaft of the second motor (29); a locking mechanism provided on the connecting block (25) for locking the second rotating frame (26); and a rotating mechanism provided on the mounting frame (3) for driving the second rotating frame (26) to rotate.

7. A fiber spinning tensile tester according to claim 6, characterized in that: The locking mechanism includes: a second spring (31) symmetrically connected to the connecting block (25); a second clamping block (32) symmetrically slidably connected to the connecting block (25), and one end of the second spring (31) is connected to the second clamping block (32). A second clamping groove (33) is symmetrically opened on the top of the second rotating frame (26), and the second clamping block (32) is clamped in the second clamping groove (33). A third clamping groove (34) is also symmetrically opened on the side of the second rotating frame (26).

8. The fiber spinning tensile tester according to claim 7, characterized in that: The rotating mechanism includes: a third driving motor (35) mounted on the mounting frame (3); a rotating disk (36) connected to the output shaft of the third driving motor (35); a vertical plate (37) connected to the side of the rotating disk (36); a third spring (38) symmetrically connected to the vertical plate (37); a third clamping block (39) symmetrically slidably connected to the vertical plate (37), and one end of the third spring (38) is connected to the third clamping block (39), and the third clamping block (39) can be clamped in the third clamping groove (34).

9. The fiber spinning tensile tester according to claim 8, characterized in that: The invention also includes: a fixed shell (40) connected to the side of the mounting frame (3); a collection frame (41) slidably connected to the fixed shell (40), and filter holes (42) are evenly spaced on the sides of the fixed shell (40) and the collection frame (41); a mounting plate (43) rotatably connected to the side of the mounting frame (3) away from the fixed shell (40); and a fan (44) installed at intervals on the mounting plate (43).

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