Tensile test device and method for environment-friendly three-resistance colored spun fiber production

Abstract

The invention discloses a tensile test device and method for environment-friendly three-resistance colored spun fiber production, and relates to the technical field of fiber tensile test. The tensile testing device and method for environment-friendly three-resistance colored spun fiber production comprise a bearing table, a control table fixed to the top of the bearing table, a guide seat fixed to the top of the bearing table, a threaded rod arranged in the bearing table in a penetrating mode and used for applying stable tension to tested fibers, and a power motor fixed in the bearing table and used for driving the threaded rod to rotate. A supporting rod is arranged on the threaded rod in a threaded and penetrating mode, an upper clamping table used for clamping a detected fiber is fixed to one end of the supporting rod, the interval of the elongation at break of a detectable fiber sample is increased, only a small space needs to be occupied, and it can be avoided that the initial length of the cut fiber sample is too long and the elongation at break is unknown; therefore, the situation that the fiber sample cannot be snapped only through linear movement of the upper clamping table and the lower clamping table is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fiber tensile testing, and in particular to a tensile testing device and method for producing environmentally friendly three-resistance color spun fibers. Background Art

[0002] Environmentally friendly three-resistance color-spun fibers play an important role in many fields such as medicine, industry, agriculture, and fishery with their unique properties and wide range of applications. Environmentally friendly three-resistance color-spun fibers usually need to be subjected to tensile tests during production to ensure that their quality and performance meet the requirements, including the key performance indicator of elongation at break. At present, when testing elongation at break, universal material testing machines are usually used for testing. The tested fibers are usually stretched by the straight line between the upper and lower clamps. Since the elongation at break of the tested fibers is unknown, if the tested fibers are longer in order to ensure that the breaking point is located in the effective area and the elongation at break of the tested fibers is larger, the tested fibers cannot be broken by stretching the tested fibers by the straight line between the upper and lower clamps. At this time, it is necessary to replace a testing machine with a longer stroke for retesting or re-cut a shorter tested fiber for retesting, which is very troublesome.

[0003] For example, a tensile test device for polyethylene fiber rope disclosed in the announcement number CN216132828U can stretch the fiber obliquely, but the extension amount is small compared to the straight-line stretching, which is almost negligible. If a larger extension amount is required, the space occupied by the device is large, and when the fiber is stretched obliquely, the clamp does not change accordingly, and the stress of the fiber will be concentrated on the side close to the clamp, and the breaking point is likely to fall outside the effective area;

[0004] Therefore, a tensile testing device and method for the production of environmentally friendly three-resistance color spun fibers are proposed. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a tensile testing device and method for the production of environmentally friendly three-resistant color spun fibers, which solves the problem that the tested fibers cannot be broken by stretching them only by moving the upper and lower clamps apart in a straight line. In this case, it is necessary to replace a testing machine with a longer stroke for re-testing or re-cut a shorter tested fiber for re-testing, which is very troublesome.

[0006] To achieve the above purpose, the present invention is implemented through the following technical solutions: a tensile testing device for the production of environmentally friendly three-resistant color spun fibers, comprising a load-bearing platform, a control console fixed on the top of the load-bearing platform, a guide seat fixed on the top of the load-bearing platform, a threaded rod inserted in the load-bearing platform for applying stable tension to the tested fiber, and a power motor fixed in the load-bearing platform for driving the threaded rod to rotate, a support rod is threadedly inserted on the threaded rod, an upper clamping platform for clamping the tested fiber is fixed at one end of the support rod, a lower clamping platform for clamping the tested fiber is installed on the top of the load-bearing platform through a mounting seat, an extension component for increasing the deformation range of the tested fiber and an auxiliary component for assisting the operation of the extension component are arranged on the top of the load-bearing platform, and the extension component includes:

[0007] A round rod, located at the midpoint of the guide seat and used to extend the fiber to be tested, one end of the round rod being fixed with a fixing frame;

[0008] A support shaft, mounted on the upper clamping platform for adjusting the angle of the upper clamping platform, an upper rotating gear is fixed to one end of the support shaft, and an upper rack is meshed on the upper rotating gear;

[0009] A movable shaft, mounted on the lower clamping platform and used to adjust the angle of the lower clamping platform, a lower rotating gear is fixed to one end of the movable shaft, and a lower rack is meshed on the lower rotating gear;

[0010] The auxiliary component comprises a switch fixed on the side of the guide seat and an elastic force sensor fixed on the upper clamping platform and the lower clamping platform.

[0011] Preferably, a fan is fixed inside the load-bearing platform, the output end of the fan is connected to a lower air supply pipeline, one end of the lower air supply pipeline is fixed with an air outlet plate, the air outlet plate is fixed on the lower clamping platform, a lower heating block for heating the hot melt adhesive is fixed inside the lower clamping platform, and an air outlet is opened on the side wall of the lower clamping platform.

[0012] Preferably, the output end of the fan is also connected to an upper air supply pipeline, a nozzle is fixed at one end of the upper air supply pipeline, the nozzle is fixed on an upper clamping platform, an upper heating block for heating the hot melt adhesive is fixed in the upper clamping platform, a steel sheet is fixed in the upper clamping platform, the steel sheet is L-shaped, and a clamping block is fixed on the steel sheet.

[0013] Preferably, a lower slider is fixed on the top of the upper clamping platform, an inclined plate is fixed to one end of the lower slider, an upper slide rod is arranged directly above the lower slider, a sliding rod is fixed to the bottom of the upper slide rod, and a sliding sleeve is slidably passed through one end of the sliding rod.

[0014] Preferably, a guide sleeve is slidably penetrated at one end of the sliding sleeve, the bottom of the guide sleeve is fixed to the top of the guide seat, a spring 1 is fixed on the side wall of the sliding sleeve, the other end of the spring 1 is fixed in the guide sleeve, and one end of the upper sliding rod is fixed to the top of the upper rack.

[0015] Preferably, an upper connecting rod is fixed to the bottom of the upper rack, a socket matched with the insertion rod is opened on the upper connecting rod, a lower connecting rod is fixed to the bottom of the insertion rod, one end of the lower connecting rod is fixed to the side wall of the lower rack, a sliding plate is fixed to one end of the lower connecting rod, the top of the sliding plate is inclined and abuts against a power block that is also inclined.

[0016] Preferably, an electric push rod is fixed on the side wall of the sliding plate, one end of the electric push rod is fixed to the back of the load-bearing platform, a guide column is slidably provided in the lower rack, one end of the guide column is fixed to the top of the load-bearing platform, a guide plate is fixed to the top of the load-bearing platform, and one end of the fixed frame is slidably provided in the guide plate.

[0017] Preferably, one end of the support shaft is slidably inserted into the upper clamping platform through a positioning rod, a fixing rod is fixed to the bottom of the positioning rod, one end of the fixing rod is inclined and slidably abuts against a limiting rod that is also inclined, one end of the limiting rod is slidably inserted into the upper clamping platform, a limiting sleeve is fixed on the side wall of the upper clamping platform, the limiting sleeve is slidably fitted with the limiting rod, and an extrusion rod is fixed to one end of the limiting rod.

[0018] The present invention also provides a detection method for a tensile testing device used in the production of environmentally friendly three-resistant color spun fibers, comprising the following steps:

[0019] S1. Cut a section of the fiber to be tested and record the initial length, and fix the two ends of the fiber to be tested in the upper clamping platform and the lower clamping platform respectively;

[0020] S2, controlling the power motor to stretch the tested fiber through the console;

[0021] S3, starting the extension component according to the stretching state of the fiber to be tested, and using the auxiliary component to assist the extension component to operate until the fiber to be tested breaks;

[0022] S4, calculating the elongation at break by measuring the length of the tested fiber after breaking and substituting it into the formula;

[0023] S5. Reset the device to its initial state and wait for the next detection.

[0024] Preferably, the angular deflection ranges of the upper clamping platform and the lower clamping platform are both between 0-60°.

[0025] The present invention provides a tensile testing device and method for the production of environmentally friendly three-resistance color spun fibers. Compared with the prior art, it has the following beneficial effects:

[0026] (1) The tensile testing device and method for the production of environmentally friendly three-resistant color spun fibers are provided with a load-bearing platform, a control console, a guide seat, a power motor, a threaded rod, a support rod, a lower clamping platform, a mounting seat, and an upper clamping platform. One end of the environmentally friendly three-resistant color spun fiber bundle or fiber monofilament to be subjected to tensile testing is fixed on the upper clamping platform, and then the other end is fixed on the lower clamping platform. The power motor is controlled to start by the control console so that the upper clamping platform and the lower clamping platform are separated from each other, and the fiber bundle is subjected to stable tension until the fiber bundle or fiber monofilament breaks. The length of the fiber bundle or fiber monofilament after breaking is measured, and the measurement result and the initial length before testing are substituted into the formula. The elongation at break of the fiber bundle or fiber monofilament is calculated. By monitoring the elongation at break, the process parameters (such as temperature, pressure, stretching speed, etc.) can be adjusted in time to ensure the consistency of the quality of the environmentally friendly three-resistant color spun fibers finally produced, thereby improving the quality of the three-resistant color spun fibers produced.

[0027] (2) The tensile testing device and method for the production of environmentally friendly three-resistant color-spun fibers are provided with a fan, a lower air supply pipeline, an air outlet plate, a lower heating block, an upper air supply pipeline, a nozzle, an upper heating block, a steel sheet, and a clamping block. When one end of the fiber bundle or fiber monofilament to be tested is placed in the upper clamping table, the fiber bundle or fiber monofilament passes through the steel sheets and clamping blocks on both sides. The friction between the fiber bundle or fiber monofilament and the steel sheet and the clamping block drives the steel sheet to deform and deflect toward the side where the clamping block is located, so that the clamping block and the steel sheet clamp the fiber bundle or fiber monofilament, and the hot melt adhesive overflowing from the steel sheet is wrapped around the outside of the fiber, and becomes liquid in the lower clamping table. The hot melt adhesive directly immerses one end of the fiber bundle or fiber monofilament in it. At this time, the console controls the fan to start and close the upper heating block and the lower heating block. The fan uses the lower air pipeline and the upper air pipeline to quickly cool and shape the hot melt adhesive at the upper and lower clamping platforms with cold air, so that the fiber, the upper clamping platform, the lower clamping platform and the hot melt adhesive form a whole, shortening the waiting time required for the hot melt adhesive to cool and shape, ensuring that the fiber is stably clamped without sliding during the stretching process, and keeping the hot melt adhesive evenly distributed on the fiber, minimizing the influence of the hot melt adhesive on the mechanical properties of the fiber, thereby obtaining more accurate and reliable test results.

[0028] (3) The tensile testing device and method for the production of environmentally friendly three-resistant color-spun fibers are provided by arranging a support shaft, a lower slider, an inclined plate, an upper slide rod, a sliding rod, a sliding sleeve, a spring, a guide sleeve, an upper rotating gear, a movable shaft, a lower rotating gear, a lower rack, a guide column, a lower connecting rod, a sliding plate, a power block, a fixed frame, a round rod, an insert rod, an upper connecting rod, an upper rack, a guide plate, and an electric push rod. The support rod provides a supporting force to the support shaft, the support shaft provides a supporting force to the upper rotating gear, and the upper clamping table provides a supporting force to the lower slider. When the upper clamping table moves to the side away from the lower clamping table to the highest point of the guide seat and the fiber has not yet broken, a control signal is sent from the console to control the electric push rod to start, and the fiber filaments between the upper clamping table and the lower clamping table are driven to move sideways through the round rod, so that the fiber filaments are subjected to lateral tension and continue to extend. At the same time, the lower rotating gear drives the lower clamping table from the movable shaft Figure 1 The position shown rotates clockwise as the fiber is stretched again, and the upper rotating gear drives the upper clamping table from Figure 1 The position shown rotates counterclockwise as the fiber is stretched again, preventing the tested fiber from breaking near the upper or lower clamping platform due to uneven force; judging whether the tested fiber breaks after reaching the maximum bearing force or because the fiber sample itself has defects, the device can detect the elongation at break of the fiber sample in the range of 0 to 800%, while increasing the range of elongation at break of the detectable fiber sample, and only requires a smaller space, and can avoid the situation where the initial length of the intercepted fiber sample is too long and the elongation at break is unknown, resulting in the situation where the fiber sample cannot be broken by the linear movement of the upper and lower clamping platforms alone.

[0029] (4) The tensile test device and method for the production of environmentally friendly three-resistant color-spun fibers are provided with a second spring, a fixing rod, a limiting rod, a limiting sleeve, an extrusion rod, and a switch. During the test, the support rod drives the positioning rod, the second spring, and the upper clamping platform to move upward under the drive of the threaded rod. If the fiber under test breaks during the linear upward movement of the upper clamping platform, there is no need to extend the assembly for operation. If the fiber under test has not broken after the upper clamping platform moves linearly upward to the maximum spacing, the force applied by the extrusion rod is greater than the rebound force of the switch itself, so that the switch is turned on to control the operation of the extension assembly. The start timing of the extension assembly is controlled by mechanical parts. When a fault occurs, it is easier to find the fault point than to transmit the control signal through the signal line, thereby reducing the difficulty of operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 Another perspective view of the overall structure of the present invention;

[0032] Figure 3 It is a schematic diagram of the position of the fan of the present invention;

[0033] Figure 4 It is a schematic diagram of the position of the power motor of the present invention;

[0034] Figure 5 It is a cross-sectional structural diagram of the upper clamping platform of the present invention;

[0035] Figure 6 It is a schematic diagram of the position of the movable axis of the present invention;

[0036] Figure 7 It is a partial structural diagram of the extension assembly of the present invention;

[0037] Figure 8 It is a cross-sectional structural diagram of the upper clamping platform of the present invention;

[0038] Fig. 9 For the present invention Figure 8 The enlarged view of point A in the middle;

[0039] Fig.10 It is an exploded state diagram of the auxiliary components of the present invention;

[0040] Fig.11 It is a partial structural diagram of the extension assembly of the present invention;

[0041] Fig.12 Another perspective view of the extended component structure of the present invention;

[0042] Fig.13 It is a disassembled state diagram of the spring 1 of the present invention;

[0043] Fig.14 It is a schematic diagram for calculating the maximum elongation at break of the present invention.

[0044] In the figure: 1, load-bearing platform; 11, control console; 12, guide seat; 13, power motor; 14, threaded rod; 15, support rod; 16, lower clamping platform; 161, mounting seat; 17, upper clamping platform; 2, fan; 21, lower air pipeline; 22, air outlet plate; 23, lower heating block; 24, upper air pipeline; 25, nozzle; 26, upper heating block; 27, steel sheet; 28, clamping block; 3, support shaft; 31, lower slider; 301, inclined plate; 32, upper slider; 33, sliding rod; 34, sliding sleeve; 3 5. Spring 1; 351. Guide sleeve; 36. Upper rotating gear; 37. Movable shaft; 38. Lower rotating gear; 39. Lower rack; 310. Guide column; 311. Lower connecting rod; 312. Sliding plate; 313. Power block; 314. Fixed frame; 315. Round rod; 316. Insert rod; 317. Upper connecting rod; 318. Upper rack; 319. Guide plate; 4. Electric push rod; 5. Spring 2; 51. Fixed rod; 52. Limit rod; 53. Limit sleeve; 54. Extrusion rod; 55. Switch. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figures 1 to 14 , the present invention provides the following technical solutions:

[0047] Embodiment 1: A tensile testing device for the production of environmentally friendly three-resistant color spun fibers, comprising a load-bearing platform 1, a control console 11 fixedly mounted on the top of the load-bearing platform 1 for controlling the test process, a guide seat 12 fixedly mounted on the top of the load-bearing platform 1 for limiting the moving distance of an upper clamping platform 17, a threaded rod 14 movably inserted through a bearing in the load-bearing platform 1 for applying a stable tension to the fiber to be tested, and a power motor 13 fixedly mounted in the load-bearing platform 1 for driving the threaded rod 14 to rotate, one end of the threaded rod 14 being fixedly mounted on the output end of the power motor 13 through a coupling, the other end of the threaded rod 14 being movably mounted in the guide seat 12 through a bearing, a support rod 15 being threadedly inserted through the threaded rod 14, one end of the support rod 15 being fixedly mounted with an upper clamping platform 17 for clamping the fiber to be tested, a mounting seat 161 being fixedly mounted on the top of the load-bearing platform 1, a lower clamping platform 16 for clamping the fiber to be tested being fixedly mounted on the mounting seat 161.

[0048] When in use, one end of the environmentally friendly three-resistant color-spun fiber bundle or fiber monofilament to be subjected to tensile test is fixed on the upper clamping platform 17, and then the other end is fixed on the lower clamping platform 16. The power motor 13 is started by controlling the control console 11, and the power motor 13 drives the threaded rod 14 to rotate, and the threaded rod 14 drives the support rod 15 to rotate. The support rod 15 and the guide seat 12 are slidably matched, so that the support rod 15 moves linearly along the guide seat 12 under the drive of the threaded rod 14, and the upper clamping platform 17 is driven by the support rod 15 to move, so that the upper clamping platform 17 and the lower clamping platform 16 are separated from each other, and the fiber bundle is subjected to stable tension until the fiber bundle or fiber monofilament is broken, and the length of the broken fiber bundle or fiber monofilament is measured, and the measurement result and the initial length before the test are substituted into the formula: In the formula, ΔL is the elongation when the fiber breaks, L0 is the initial length of the fiber before testing, and the elongation at break of the fiber bundle or fiber monofilament is obtained by calculation.

[0049] Embodiment 2, the technical scheme that distinguishes this embodiment from Embodiment 1 includes: a fan 2 is fixedly installed in the load-bearing platform 1, the output end of the fan 2 is connected to a group of lower air pipelines 21, one end of each lower air pipeline 21 is fixedly installed with an air outlet plate 22, and two air outlet plates 22 are fixedly installed on the lower clamping platform 16, a lower heating block 23 for heating the hot melt adhesive is fixedly installed in the lower clamping platform 16, and an air outlet is provided on the side wall of the lower clamping platform 16, the output end of the fan 2 is also connected to an upper air pipeline 24, one end of the upper air pipeline 24 is fixedly installed with a nozzle 25, and the nozzle 25 is fixedly installed on the upper clamping platform 17, two upper heating blocks 26 for heating the hot melt adhesive are fixedly installed in the upper clamping platform 17, two symmetrically arranged L-shaped steel sheets 27 are fixedly installed in the upper clamping platform 17, and a clamping block 28 is fixedly installed on each of the two L-shaped steel sheets 27.

[0050] When in use, when one end of the fiber bundle or fiber monofilament to be detected is placed in the upper clamping platform 17, the fiber bundle or fiber monofilament is passed through the steel sheets 27 and the clamping blocks 28 on both sides. When the detection object is a fiber monofilament, the steel sheet 27 and the clamping block 28 with a smaller interval are replaced, and the fiber bundle or fiber monofilament between the steel sheet 27 and the clamping block 28 is pulled down for a distance, and the friction between the fiber bundle or fiber monofilament and the steel sheet 27 and the clamping block 28 is used to drive the steel sheet 27 to deform and deflect toward the side where the clamping block 28 is located. , so that the clamp block 28 and the steel sheet 27 clamp the fiber bundle or the fiber monofilament, at this time the steel sheet 27 is no longer an inverted L-shape, but is deflected as a whole to the side where the clamp block 28 is located, leaving the other end of the fiber bundle or the fiber monofilament with a suitable length and placed in the lower clamping platform 16, hot melt adhesive is added to the upper clamping platform 17 and the lower clamping platform 16, and the upper heating block 26 and the lower heating block 23 are controlled by the control console 11 to heat the hot melt adhesive in the upper clamping platform 17 and the lower clamping platform 16 to make the hot melt adhesive liquid;

[0051] By opening an arc-shaped groove inclined from high to low toward the side where the clamp block 28 is located on the top of the steel sheet 27, a small portion of the hot melt adhesive that is heated in the upper clamping table 17 and becomes liquid just flows through the arc-shaped groove toward the side where the fiber is located, so that the outflowing hot melt adhesive wraps the outside of the fiber, and the hot melt adhesive on both sides flows toward the fiber at the center at the same time and is evenly wrapped around the outside of the fiber under the capillary action, while the hot melt adhesive that becomes liquid in the lower clamping table 16 directly immerses one end of the fiber bundle or the fiber monofilament therein;

[0052] The control console 11 controls the fan 2 to start and shut down the upper heating block 26 and the lower heating block 23. The fan 2 blows cold air through the air outlet plate 22 into the lower clamping platform 16 through the lower air supply pipeline 21, and the hot air is blown out through the air outlets on both sides to form an annular airflow in the lower clamping platform 16, so that the liquid hot melt adhesive is quickly cooled and formed, so that the fiber, the lower clamping platform 16, and the hot melt adhesive form a whole. At the same time, the fan 2 sprays cold air through the nozzle 25 to the steel sheet 27 through the upper air supply pipeline 24, so that the hot melt adhesive at the steel sheet 27 is quickly cooled and formed, so that the fiber, the upper clamping platform 17, and the hot melt adhesive form a whole.

[0053] Embodiment 3, the technical solution of this embodiment is different from that of Embodiment 2 in that: the upper clamping platform 17 is no longer directly fixedly mounted on one end of the support rod 15, and the lower clamping platform 16 is no longer directly fixedly mounted on the mounting seat 161;

[0054] An extension component for increasing the deformation range of the measured fiber is provided on the top of the load-bearing platform 1, and the extension component includes:

[0055] One end of the round rod 315 is fixedly mounted on the fixed frame 314. The round rod 315 is located at the midpoint of the guide seat 12 and is used to extend the fiber to be tested. A guide plate 319 is fixedly mounted on the top of the load-bearing platform 1. One end of the fixed frame 314 is slidably inserted into the guide plate 319.

[0056] One end of the support shaft 3 is fixedly mounted on the upper clamping platform 17 for adjusting the angle of the upper clamping platform 17, and an upper rotating gear 36 is fixedly mounted on the other end of the support shaft 3, and an upper rack 318 is meshedly connected to the upper rotating gear 36. The support shaft 3 is movably mounted in the support rod 15 through a bearing, and one end of the support shaft 3 passes through the support rod 15 and passes through the sliding hole provided on the guide seat 12 to extend to the back side of the guide seat 12;

[0057] One end of the movable shaft 37 is fixedly mounted on the lower clamping platform 16 for adjusting the angle of the lower clamping platform 16, and the other end of the movable shaft 37 is fixedly mounted with a lower rotating gear 38, and the lower rotating gear 38 is meshed with a lower rack 39. One end of the movable shaft 37 is hingedly mounted in the mounting seat 161 through a torsion spring, and the other end of the movable shaft 37 is movably mounted in the guide seat 12 through a bearing, and one end of the movable shaft 37 penetrates the guide seat 12 and extends to the back of the guide seat 12;

[0058] A lower slider 31 is fixedly installed on the top of the upper clamping platform 17, and an inclined plate 301 is fixedly installed on one end of the lower slider 31. An upper slider 32 is arranged directly above the lower slider 31. The ends of the lower slider 31 and the upper slider 32 close to each other are inclined and slidably adapted to each other. A sliding rod 33 is fixedly installed on the bottom of the upper slider 32. A sliding sleeve 34 is slidably passed through one end of the sliding rod 33, and a guide sleeve 351 is slidably passed through one end of the sliding sleeve 34. The bottom of the guide sleeve 351 is fixedly installed on the top of the guide seat 12, and a spring 35 is fixedly installed on the side wall of the sliding sleeve 34. The other end of the spring 35 is fixedly installed in the guide sleeve 351. One end of the upper slider 32 is fixedly installed on the upper rack 318 The top of the upper rack 318 is fixedly installed with an upper connecting rod 317 at the bottom, and a socket matched with the insertion rod 316 is opened on the upper connecting rod 317. The bottom of the insertion rod 316 is fixedly installed on the top of the lower connecting rod 311. One end of the lower connecting rod 311 is fixedly installed on the side wall of the lower rack 39. A guide column 310 is slidably passed through the lower rack 39. One end of the guide column 310 is fixedly installed on the top of the load-bearing platform 1. A sliding plate 312 is fixedly installed on one end of the lower connecting rod 311. The top of the sliding plate 312 is inclined and abuts against a power block 313 that is also inclined. An electric push rod 4 is fixedly installed on the side wall of the sliding plate 312, and one end of the electric push rod 4 is fixedly installed on the back of the load-bearing platform 1.

[0059] When in use, the support rod 15 provides a supporting force to the support shaft 3, the support shaft 3 provides a supporting force to the upper rotating gear 36, and the upper clamping platform 17 provides a supporting force to the lower sliding block 31. When the upper clamping platform 17 moves to the side away from the lower clamping platform 16 to the highest point of the guide seat 12 and the fiber has not yet broken, the lower sliding block 31 will squeeze the upper sliding rod 32 to make the upper sliding rod 32 move to the side close to the fixed frame 314, and the upper sliding rod 32 drives the sliding sleeve 34 to move synchronously. The sliding sleeve 34 and the guide sleeve 351 slide together so that the sliding sleeve 34 only moves in a straight line when moving, and the upper rack 318 is driven to move synchronously by the upper sliding rod 32, so that the upper rack 318 just meshes with the upper rotating gear, and the upper rack 318 drives the upper connecting rod 317 to move synchronously, and the upper connecting rod 317 is stuck in the insertion rod 316;

[0060] At this time, a control signal is transmitted through the console 11 to control the electric push rod 4 to start, and the electric push rod 4 drives the sliding plate 312 to move upward, and the sliding plate 312 squeezes the power block 313 to move, and the fixed frame 314 limits the power block 313. The fixed frame 314 and the guide plate 319 are slidably matched to make the power block 313 move linearly along the sliding plate 312 under the squeezing of the sliding plate 312, and the fixed frame 314 is driven by the power block 313 to move, so that the fixed frame 314 drives the round rod 315 to move, and the round rod 315 drives the fiber filaments between the upper clamping platform and the lower clamping platform to move sideways, so that the fiber filaments are subjected to lateral tension and continue to extend;

[0061] At the same time, the sliding plate 312 drives the lower connecting rod 311 to move upward synchronously, and the lower connecting rod 311 drives the lower rack 39 and the upper rack 318 to move upward through the insertion rod 316 and the upper connecting rod 317, and the lower rotating gear 38 and the upper rotating gear 36 are respectively driven to rotate through the lower rack 39 and the upper rack 318, and the lower rotating gear 38 drives the lower clamping table 16 to rotate through the movable shaft 37. Figure 1 The position shown rotates clockwise as the fiber is stretched again, and the upper rotating gear 36 drives the upper clamping platform 17 from the support shaft 3. Figure 1 The position shown rotates counterclockwise as the fiber is stretched again, so that a triangular area is formed between the two ends of the fiber and the round rod.

[0062] In another embodiment different from the aforementioned scheme: an auxiliary component for assisting the operation of the extension component is arranged on the load-bearing platform 1, and the auxiliary component includes a switch 55 fixedly mounted on the side of the guide seat 12, and the switch 55 is a self-resetting switch. A positioning rod is fixedly mounted on one end of the support shaft 3, and one end of the positioning rod is slidably penetrated in the upper clamping platform 17, and a spring 25 is fixedly mounted on the top of the positioning rod, and the other end of the spring 25 is fixedly mounted in the upper clamping platform 17, and a fixing rod 51 is fixedly mounted on the bottom of the positioning rod, and one end of the fixing rod 51 is inclinedly arranged and slidably abuts against a limit rod 52 which is also inclined, and one end of the limit rod 52 is slidably penetrated in the upper clamping platform 17, and a limit sleeve 53 is fixedly mounted on the side wall of the upper clamping platform 17, and the limit sleeve 53 is slidably fitted with the limit rod 52, and an extrusion rod 54 is fixedly mounted on one end of the limit rod 52.

[0063] During the test, the support rod 15 will first move upwards driven by the threaded rod 14, and at the same time, the support rod 15 will drive the support shaft 3 to move upwards. After the support shaft 3 compresses the spring 2 5 to the limit through the positioning rod, the upper clamping table 17 will be driven upwards through the spring 2 5;

[0064] The positioning rod synchronously drives the fixing rod 51 to move, and the fixing rod 51 squeezes the limiting rod 52 to move. The limiting rod 52 is slidably adapted with the upper clamping platform 17 and the limiting sleeve 53, so that the limiting rod 52 can slide linearly along the limiting sleeve 53 under the squeezing of the fixing rod 51, and the squeezing rod 54 is driven by the limiting rod 52 to move, so that the squeezing rod 54 is located directly below the switch 55;

[0065] If the fiber under test breaks during the linear upward movement of the upper clamping platform 17, there is no need to extend the assembly for operation. If the fiber under test happens to break after the upper clamping platform 17 moves linearly upward to the maximum spacing, the upper clamping platform 17 will move upward a short distance under the action of spring 25 until the upper clamping platform 17 stops abutting against the bottom of the positioning rod. At this time, the force applied by the squeezing rod 54 loses the force of the supporting rod 15, and the force of the spring 25 alone cannot make the switch 55 completely closed, so it is closed again under the self-resetting action of the switch 55. If the fiber under test has not broken after the upper clamping platform 17 moves linearly upward to the maximum spacing, the force applied by the squeezing rod 54 is greater than the rebound force of the switch 55 itself, so that the switch 55 is turned on to control the operation of the extension assembly. The start-up timing of the extension assembly is controlled by mechanical parts. When a fault occurs, it is easier to find the fault point than transmitting the control signal through the signal line, thereby reducing the difficulty of operation and maintenance.

[0066] In another embodiment different from the aforementioned scheme, an elastic force sensor included in the auxiliary component is added to the upper clamping table 17 and the lower clamping table 16. The elastic force sensor is used to detect the rebound force generated by the fiber breaking during the stretching process to determine its breaking position. For defect-free fibers, the breaking position is usually in the middle because the stress in the middle is the largest. It is thus determined whether the breaking of the tested fiber is due to breaking after reaching the maximum bearing force or because the fiber sample itself has defects.

[0067] The calculation formula used is as follows:

[0068] Where F A is the force on one side, F B is the force on the other side, L is the total length, and x is the fracture position. The cause of the fracture of the measured fiber is determined based on the calculated distance between the fracture position and the two ends of the measured fiber.

[0069] In another embodiment different from the aforementioned scheme: the total length of the two hypotenuses of the triangular area is the maximum stretching amount C of the device, and the length of the last side of the triangular area is the maximum spacing A between the upper clamping platform 17 and the lower clamping platform 16 in the device. Taking A=1 meter as an example, in order to ensure that the fiber is located in the effective area when it breaks, it is necessary to ensure that the effective area of ​​the fiber is at least 5mm to 10mm away from the edge of the upper clamping platform 17 and the lower clamping platform 16. Assuming that the effective area of ​​the fiber breakage is at least 10mm away from the edge of the upper clamping platform 17 or the lower clamping platform 16, when the extension component is used for testing, the maximum initial length of the tested fiber is 970mm, a is the distance from the upper clamping platform 17 to the midpoint when the upper clamping platform 17 moves to the maximum distance, and b is the length of the round rod 315 from the initial position when it moves to the farthest distance, a=500mm, b=920mm, using the Pythagorean theorem a 2 +b 2 =c 2The calculation shows that: c = 1047 mm, then the maximum stretch of the tested fiber is C = 2094 mm, and the initial length is 970 mm;

[0070] Substituting into the formula: In the calculation, the elongation at break is about 115.9%;

[0071] If the material of the tested fiber is polyurethane fiber, its elongation at break is usually between 300% and 800%. Taking the maximum value of 800% as an example, it is known that C = 2094mm, c = 1047mm, b = 920mm. According to the Pythagorean theorem, it can be calculated that: a ≈ 232.7mm, then the maximum initial length of the tested polyurethane fiber is 232.7mm;

[0072] If the polyurethane fiber is detected only by the moving distance between the upper clamping table 17 and the lower clamping table 16, and the fiber being tested is just broken when the upper clamping table 17 and the lower clamping table 16 are at the maximum distance, C = A = 500mm, substitute into the formula It can be calculated that the initial length of the fiber is 55.6 mm;

[0073] When the extended component is used for testing, the initial length of the polyurethane fiber is 55.6 mm, and the minimum device with A = 58 mm and b = 30 mm is required to detect the elongation at break of the polyurethane fiber, thereby reducing the entire device to a portable size, so that the quality inspectors can carry the device to the production line for on-site sampling and testing, without the need to send the samples to the inspection room for inspection, thus shortening the testing time;

[0074] In summary, in this device:

[0075] When the maximum initial length of the tested fiber is 970 mm, the maximum elongation at break is about 115.9%;

[0076] When the maximum breaking elongation of the tested fiber is 800%, the maximum initial length is 232.7 mm.

[0077] The embodiment of the present invention also provides a detection method for a tensile testing device used in the production of environmentally friendly three-resistant color spun fibers, comprising the following steps:

[0078] S1, cut a section of the fiber to be tested and record the initial length, and fix the two ends of the fiber to be tested in the upper clamping platform 17 and the lower clamping platform 16 respectively;

[0079] S2, controlling the power motor 13 to stretch the tested fiber through the control console 11;

[0080] S3, starting the extension component according to the stretching state of the fiber to be tested, and using the auxiliary component to assist the extension component to operate until the fiber to be tested breaks;

[0081] S4, calculating the elongation at break by measuring the length of the tested fiber after breaking and substituting it into the formula;

[0082] S5. Reset the device to its initial state and wait for the next detection.

[0083] The angular deflection ranges of the upper clamping platform 17 and the lower clamping platform 16 are both between 0° and 60°.

[0084] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0085] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for the production of environmentally friendly three-resistant color-spun fibers, comprising a load-bearing platform (1), a control console (11) fixed to the top of the load-bearing platform (1), a guide seat (12) fixed to the top of the load-bearing platform (1), a threaded rod (14) inserted into the load-bearing platform (1) for applying a stable tension to the tested fiber, and a power motor (13) fixed to the load-bearing platform (1) for driving the threaded rod (14) to rotate, characterized in that: A support rod (15) is threadedly penetrated on the threaded rod (14); an upper clamping platform (17) for clamping the fiber to be tested is fixed to one end of the support rod (15); a lower clamping platform (16) for clamping the fiber to be tested is installed on the top of the load-bearing platform (1) via a mounting seat (161); an extension component for increasing the deformation range of the fiber to be tested and an auxiliary component for assisting the operation of the extension component are arranged on the top of the load-bearing platform (1); the extension component comprises: A round rod (315) is located at the midpoint of the guide seat (12) and is used to extend the fiber to be tested. A fixing frame (314) is fixed to one end of the round rod (315); A support shaft (3) is mounted on the upper clamping platform (17) and is used to adjust the angle of the upper clamping platform (17); an upper rotating gear (36) is fixed to one end of the support shaft (3), and an upper rack (318) is meshed on the upper rotating gear (36); A movable shaft (37) is mounted on the lower clamping platform (16) and is used to adjust the angle of the lower clamping platform (16). A lower rotating gear (38) is fixed to one end of the movable shaft (37), and a lower rack (39) is meshed on the lower rotating gear (38); The auxiliary component comprises a switch (55) fixed on the side of the guide seat (12) and elastic force sensors fixed on the upper clamping platform (17) and the lower clamping platform (16).

2. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 1, characterized in that: A fan (2) is fixed inside the load-bearing platform (1); the output end of the fan (2) is connected to a lower air supply pipeline (21); one end of the lower air supply pipeline (21) is fixed with an air outlet plate (22); the air outlet plate (22) is fixed on a lower clamping platform (16); a lower heating block (23) for heating hot melt adhesive is fixed inside the lower clamping platform (16); and an air outlet is provided on a side wall of the lower clamping platform (16).

3. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 2, characterized in that: The output end of the fan (2) is also connected to an upper air supply pipeline (24), one end of which is fixed with a nozzle (25), the nozzle (25) being fixed on an upper clamping platform (17), an upper heating block (26) for heating the hot melt adhesive being fixed in the upper clamping platform (17), a steel sheet (27) being fixed in the upper clamping platform (17), the steel sheet (27) being arranged in an L shape, and a clamping block (28) being fixed on the steel sheet (27).

4. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 1, characterized in that: A lower slider (31) is fixed on the top of the upper clamping platform (17), an inclined plate (301) is fixed on one end of the lower slider (31), an upper slider (32) is arranged directly above the lower slider (31), a sliding rod (33) is fixed on the bottom of the upper slider (32), and a sliding sleeve (34) is slidably penetrated through one end of the sliding rod (33).

5. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 4, characterized in that: A guide sleeve (351) is slidably inserted into one end of the sliding sleeve (34), the bottom of the guide sleeve (351) is fixed to the top of the guide seat (12), a spring (35) is fixed to the side wall of the sliding sleeve (34), the other end of the spring (35) is fixed in the guide sleeve (351), and one end of the upper sliding rod (32) is fixed to the top of the upper rack (318).

6. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 5, characterized in that: An upper connecting rod (317) is fixed to the bottom of the upper rack (318), and a socket matched with the insertion rod (316) is provided on the upper connecting rod (317). A lower connecting rod (311) is fixed to the bottom of the insertion rod (316), and one end of the lower connecting rod (311) is fixed to the side wall of the lower rack (39). A sliding plate (312) is fixed to one end of the lower connecting rod (311), and the top of the sliding plate (312) is inclined and abuts against a power block (313) that is also inclined.

7. A tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 6, characterized in that: An electric push rod (4) is fixed on the side wall of the sliding plate (312), one end of the electric push rod (4) is fixed to the back of the load-bearing platform (1), a guide column (310) is slidably inserted into the lower rack (39), one end of the guide column (310) is fixed to the top of the load-bearing platform (1), a guide plate (319) is fixed to the top of the load-bearing platform (1), and one end of the fixed frame (314) is slidably inserted into the guide plate (319).

8. The tensile testing device for environmentally friendly three-resistance color-spun fiber production according to claim 1, characterized in that: One end of the support shaft (3) is slidably inserted into the upper clamping platform (17) through a positioning rod, a fixing rod (51) is fixed to the bottom of the positioning rod, one end of the fixing rod (51) is inclined and slidably abuts against a limit rod (52) which is also inclined, one end of the limit rod (52) is slidably inserted into the upper clamping platform (17), a limit sleeve (53) is fixed on the side wall of the upper clamping platform (17), the limit sleeve (53) is slidably fitted with the limit rod (52), and an extrusion rod (54) is fixed to one end of the limit rod (52).

9. A detection method for a tensile testing device for environmentally friendly three-resistance color-spun fiber production according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, cutting a section of the fiber to be tested and recording the initial length, and fixing the two ends of the fiber to be tested in the upper clamping platform (17) and the lower clamping platform (16) respectively; S2, controlling the power motor (13) to run through the control console (11) to stretch the fiber to be tested; S3, starting the extension component according to the stretching state of the fiber to be tested, and using the auxiliary component to assist the extension component to operate until the fiber to be tested breaks; S4, calculating the elongation at break by measuring the length of the tested fiber after breaking and substituting it into the formula; S5. Reset the device to its initial state and wait for the next detection.

10. The detection method of the tensile testing device for environmentally friendly three-resistance color spun fiber production according to claim 9, characterized in that: The angular deflection ranges of the upper clamping platform (17) and the lower clamping platform (16) are both between 0 and 60 degrees.

Images