Full-automatic chemical fiber filament thermal shrinkage instrument

Abstract

The invention is applicable to the field of textile equipment, and provides a full-automatic chemical fiber filament thermal shrinkage instrument which comprises a test box, a detachable sealing cover plate is arranged in front of the test box, a bottom plate is fixedly mounted below the test box, and a top plate is fixedly mounted above the test box. Wire hanging mechanisms are arranged on the bottom surface of the bottom plate and the top surface of the top plate; the wire hanging mechanism comprises a bottom plate and a limiting stopper rail on the side wall of the top plate, a sliding limiting stopper is installed on the limiting stopper rail in a sliding mode, and the sliding limiting stopper is fixed to the side wall of the limiting stopper rail through a locking bolt. A notch frame on the left side of a nut block pushes an inclined block to slide up and down through a steel rod, when the inclined block is pushed to the topmost end of the stroke, an electric push rod drives a stirring plate and a stirring strip to stretch out to be inserted into a gap of a chemical fiber filament, and when the stirring plate and the stirring strip slide downwards, the stirring strip gradually extrudes the chemical fiber filament to apply a load; therefore, the tension applied to the chemical fiber filaments changes more stably.

Description

Technical Field

[0001] The present invention belongs to the field of textile equipment, and particularly relates to a fully automatic chemical fiber filament heat shrinkage instrument. Background Art

[0002] With the development of industrial technology, modern textile equipment technology has become increasingly perfect. The heat shrinkage rate of chemical fiber filaments is one of the main parameters characterizing the fiber structure and properties, and is closely related to processes such as the forming and post-treatment of chemical fiber filaments. Traditional testing methods for the heat shrinkage rate of chemical fiber filaments mostly adopt manual operations, which have problems such as low testing efficiency, low accuracy, and complex operations. At the same time, although some existing testing instruments have achieved automatic testing, they still have disadvantages such as unreasonable force measurement methods, low testing accuracy, and large instrument volume. Therefore, it is of great significance to develop a highly efficient, accurate, and fully automatic chemical fiber filament heat shrinkage instrument.

[0003] For example, a chemical fiber filament dry heat shrinkage rate tester and testing method disclosed in Patent CN114965552A. This chemical fiber filament dry heat shrinkage rate tester includes: a filament fixing mechanism; a moving heating mechanism, which includes a filament heating chamber; an image acquisition module, which is arranged below the filament hanging mechanism; and a control module, which is electrically connected to the filament hanging mechanism, the moving heating mechanism, and the image acquisition module, and is adapted to control the moving heating mechanism to move to the filament hanging mechanism, control the filament heating chamber to heat the filament, and respectively collect the length displacement changes of the filament at corresponding temperatures through the image acquisition module to obtain the dry heat shrinkage rate of the filament. This chemical fiber filament dry heat shrinkage rate tester and testing method use the image acquisition module to respectively collect the length displacement changes of the filament at corresponding temperatures to obtain the dry heat shrinkage rate of the filament; This device still has defects when in use. First, the control of the tension load on the filament to be detected by this device is relatively complex. If the tension increases rapidly, it is easy to cause the chemical fiber filament to break, and it is difficult to capture the critical tensile force value when the chemical fiber filament breaks. After the tension value of the chemical fiber filament is fixed, if the tension value of the chemical fiber filament changes again, it is necessary to loosen and retract a fixed end of the chemical fiber filament, and at this time, the stability of the tension is insufficient. Second, the chemical fiber filament needs to be tested many times to accurately grasp the physical properties of the chemical fiber filament. Temperature has a great influence on chemical fiber filaments. At different temperatures, the ductility and hardness of chemical fiber filaments will change. In the past, chemical fiber filaments were detected at a specific temperature, so the physical properties of chemical fiber filaments at different temperatures could not be mastered. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide a fully automated fiber filament heat shrinkage tester. When the device is in use, the two ends of the chemical fiber filament are knotted into buckles, and the rope buckles at both ends of the chemical fiber filament are hung on two hook needles at the upper and lower ends. When the two hook needles are aligned up and down, the chemical fiber filament is in a relaxed state, and the inspector can observe the stretching of the chemical fiber filament under its own weight. The hook plate moves a distance to the right to tighten the chemical fiber filament and then fixes the slide limiter with a locking bolt. At the same time, the stepping motor drives the nut block to slide up and down through the lead screw, and the notch frame on the left side of the nut block pushes the inclined block up and down through the steel rod. When the inclined block is pushed to the top of the stroke, the electric push rod drives the toggle plate and the toggle bar to extend and insert into the gap between the chemical fiber filaments. When the toggle plate and the toggle bar slide downward, the toggle bar will gradually squeeze the chemical fiber filament to the left to apply a load, and then the tension of the chemical fiber filament changes relatively stably. The staff can accurately grasp the physical properties of the chemical fiber filament, thereby solving the problems mentioned in the background technology.

[0005] To solve the above problems, the present invention provides the following technical solutions: it includes a test box, the front of the test box is provided with a detachable sealed cover plate, the bottom of the test box is fixedly installed with a bottom plate, and the top of the test box is fixedly installed with a top plate, and the bottom surface of the bottom plate and the top surface of the top plate are both provided with a wire hanging mechanism; the wire hanging mechanism includes a limiter rail on the side walls of the bottom plate and the top plate, and a sliding limiter is slidably installed on the limiter rail, and the sliding limiter is fixed to the side wall of the limiter rail by a locking bolt, a hook plate is provided on the rear side wall of the sliding limiter, and the side walls of the bottom plate and the top plate are provided with an interlaced wire groove matching the hook plate, eight hook needles in a straight line array are provided on the side walls of the hook plate, and there are two chemical fiber filaments between the upper and lower hook needles; a tension sensor is provided at the root of each hook needle, and the tension sensor is connected to the data processing module through a data line; the chemical fiber filament is connected to a load applying mechanism.

[0006] Furthermore, the load application mechanism includes an inclined slot frame on the inner side wall of the test box, the inclined slot frame and the vertical line form an angle of 10°, the inclined slot frame is slidingly provided with an inclined block inside, a steel rod is provided on the side wall of the inclined block, and a cantilever plate is provided at the end of the steel rod facing away from the inclined block, and an electric push rod is provided at the end of the cantilever plate, and a toggle plate is provided on the telescopic rod of the electric push rod, and eight toggle bars in a straight line array are provided on the side wall of the toggle plate facing away from the electric push rod, the spacing between the toggle bars is equal to the spacing between the chemical fiber filaments, the toggle bars are evenly interspersed in the gaps between the chemical fiber filaments, and the steel rod is connected to the vertical propulsion assembly.

[0007] Furthermore, the vertical propulsion assembly includes two shaft seats on the right side wall inside the test box, a screw rod is provided in the middle of the shaft seat for rotation, the screw rod is connected to the output shaft of the stepper motor, a nut block is mounted on the screw rod, a slot frame is provided at the left end of the nut block, a steel rod is inserted into the inside of the slot frame, and a nut fixing assembly is also provided on the right side wall inside the test box.

[0008] Furthermore, the nut securing assembly includes a linear slot frame on the right side wall inside the test box, and an insert block inserted into the linear slot frame is provided at the right end of the nut block.

[0009] Furthermore, the surfaces of the toggle bar and the steel rod are subjected to grinding and polishing treatment, and the surfaces of the toggle bar and the steel rod are subjected to corrosion-resistant treatment.

[0010] Furthermore, the sealed cover is provided with two water inlets, through which water can be injected into the interior of the test box, and the two water inlets are equipped with plungers.

[0011] Furthermore, a heating wire is provided on the sealed cover plate, and a temperature detection mechanism is provided on the inner wall of the test box. The temperature detection mechanism is connected to the data processing module via a data line.

[0012] Furthermore, the data processing module is connected to an external computer device, and the data processing module transmits a vertical function graph of temperature and tension to the computer device, and the data processing module is also connected to a printing device.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects: First, when the device is in use, the two ends of the chemical fiber filament are tied into buckles, and the rope buckles at both ends of the chemical fiber filament are hung on the two hook needles above and below. When the two hook needles are aligned up and down, the chemical fiber filament is in a relaxed state, and the inspector can observe the stretching of the chemical fiber filament under its own weight. The hook plate moves a distance to the right to tighten the chemical fiber filament and then fixes the slide limiter with a locking bolt. At the same time, the stepper motor drives the nut block to slide up and down through the lead screw, and the notch frame on the left side of the nut block pushes the inclined block up and down through the steel rod. When the inclined block is pushed to the top of the stroke, the electric push rod drives the toggle plate and the toggle bar to extend and insert into the gap between the chemical fiber filaments. When the toggle plate and the toggle bar slide down, the toggle bar will gradually squeeze the chemical fiber filament to the left to apply a load, and then the tension of the chemical fiber filament changes relatively stably, and the staff can accurately grasp the physical properties of the chemical fiber filament.

[0014] Secondly, fill the test box with hot water and soak it for a period of time. The shrinkage of the chemical fiber filaments at different temperatures will be reflected in the tension of the chemical fiber filaments. The water temperature parameters and the parameters of the chemical fiber filament tension are formed into a function chart, and multiple sets of data are collected to calculate the thermal shrinkage performance of the chemical fiber filaments at different temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the side view of the present invention.

[0017] Figure 3 It is a schematic diagram of a cross-section of the present invention.

[0018] Figure 4 Schematic diagram of the limiter track of the present invention.

[0019] Figure 5 Schematic diagram of the inclined block of the present invention.

[0020] Figure 6 Schematic diagram of the electric push rod of the present invention.

[0021] Figure 7 It is a schematic diagram of the nut block of the present invention.

[0022] Figure 8 Schematic diagram of the hook needle of the present invention.

[0023] Description of reference numerals: Test box 1, bottom plate 2, inserted wire groove 201, top plate 3, chemical fiber filament 4, toggle plate 5, toggle bar 501, shaft seat 6, lead screw 601, linear slot frame 602, stepper motor 603, insert block 604, notch frame 605, nut block 606, limiter track 7, slide limiter 701, locking bolt 702, hook plate 703, hook needle 704, oblique block 8, oblique slot frame 801, steel rod 802, cantilever plate 9, electric push rod 901. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0025] Reference to "embodiment" in this text means that the specific features, structures, or characteristics described in connection with the embodiment can be included in at least one embodiment of the present application. The phrase appears at various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] The present invention provides a fully automatic chemical fiber filament heat shrinkage instrument, as Figure 1-8 shown, which includes a test chamber 1. A detachable airtight cover plate is provided in front of the test chamber 1. A bottom plate 2 is fixedly installed below the test chamber 1, and a top plate 3 is fixedly installed above the test chamber 1. Hanging wire mechanisms are provided on the bottom surface of the bottom plate 2 and the top surface of the top plate 3; the hanging wire mechanism includes a limiter track 7 on the side walls of the bottom plate 2 and the top plate 3. A sliding limiter 701 is slidably installed on the limiter track 7. The sliding limiter 701 is fixed to the side wall of the limiter track 7 by a locking bolt 702. A hook plate 703 is provided on the rear side wall of the sliding limiter 701. The hook plate 703 is divided into an upper hook plate and a lower hook plate. Interpenetrating wire grooves 201 matching the hook plate 703 are provided on the side walls of the bottom plate 2 and the top plate 3. Eight hook needles 704 are arranged in a linear array on the side wall of the hook plate 703. A chemical fiber filament 4 is strung between two adjacent hook needles 704 in the upper and lower rows; a tension sensor is provided at the root of each hook needle 704. The tension sensor is connected to a data processing module through a data line; the chemical fiber filament 4 is connected to a load applying mechanism.

[0027] In this embodiment, the two ends of the chemical fiber filament are knotted, and the rope knots at the two ends of the chemical fiber filament are hung on the two hook needles 704 above and below. When the two hook needles 704 are aligned vertically, the chemical fiber filament is in a relaxed state. Then, the inspector can observe the stretching condition of the chemical fiber filament under its own weight. The upper hook plate is moved a certain distance to the right while the lower hook plate does not move. After the chemical fiber filament is tightened, the sliding limiter 701 is fixed with the locking bolt 702. The load applying mechanism gradually applies tension to the chemical fiber filament 4. The tension sensor at the root of the hook needle 704 can detect the tension borne by the chemical fiber filament 4 until the chemical fiber filament 4 breaks, and the staff can obtain the breaking critical value of the chemical fiber filament 4.

[0028] In a further embodiment of the present invention, as Figure 1-8As shown, the load applying mechanism includes an inclined slot frame 801 on the inner wall of the test box 1, the inclined slot frame 801 forms an angle of 10° with the vertical line, the internal sliding of the inclined slot frame 801 is provided with an inclined block 8, the side wall of the inclined block 8 is provided with a steel rod 802, the end of the steel rod 802 facing away from the inclined block 8 is provided with a cantilever plate 9, the end of the cantilever plate 9 is provided with an electric push rod 901, and the telescopic rod of the electric push rod 901 is provided with a toggle plate 5, and the side wall of the toggle plate 5 facing away from the electric push rod 901 is provided with eight toggle bars 501 in a straight line array, the spacing between the toggle bars 501 is equal to the spacing between the chemical fiber filaments 4, the toggle bars 501 are evenly interspersed in the gaps between the chemical fiber filaments 4, and the steel rod 802 is connected to the vertical propulsion assembly.

[0029] In this embodiment, when the inclined block 8 is pushed to the top of the stroke, the electric push rod 901 drives the toggle plate 5 and the toggle bar 501 to extend and insert into the gap of the chemical fiber filament 4. When the toggle plate 5 and the toggle bar 501 slide downward, the toggle bar 501 will gradually squeeze the chemical fiber filament 4 to the left to apply a load, thereby applying a relatively stable change to the tension of the chemical fiber filament 4, and the staff can accurately grasp the physical properties of the chemical fiber filament 4.

[0030] In a further embodiment of the present invention, Figure 1-7 As shown, the vertical propulsion assembly includes two shaft seats 6 on the right side wall inside the test box 1, and a screw rod 601 is rotatably provided in the middle of the shaft seat 6. The screw rod 601 is connected to the output shaft of the stepping motor 603. A nut block 606 is mounted on the screw rod 601, and a notch frame 605 is provided at the left end of the nut block 606. The steel rod 802 is inserted into the inside of the notch frame 605. A nut fixing assembly is also provided on the right side wall inside the test box 1.

[0031] In this embodiment, at the same time, the stepper motor 603 drives the nut block 606 to slide up and down through the screw rod 601, and the notch frame 605 on the left side of the nut block 606 pushes the inclined block 8 to slide up and down through the steel rod 802, thereby achieving the effect of driving the inclined block 8 to slide.

[0032] In a further embodiment of the present invention, Figure 1-7 As shown, the nut securing assembly includes a linear slot frame 602 on the right side wall inside the test box 1 , and an insert block 604 inserted into the linear slot frame 602 is provided at the right end of the nut block 606 .

[0033] In this embodiment, the insert block 604 slides inside the linear channel frame 602 to increase the stability of the nut block 606 and the insert block 604 .

[0034] In a further embodiment of the present invention, Figure 1-7As shown, the surfaces of the toggle bar 501 and the steel rod 802 are polished, and the surfaces of the toggle bar 501 and the steel rod 802 are corrosion-resistant treated.

[0035] In this embodiment, the polishing treatment of the toggle bar 501 and the steel rod 802 can reduce the friction force and prevent the rust on the surface of the toggle bar 501 from scraping the chemical fiber filaments.

[0036] In a further embodiment of the present invention, as Figure 1-2 shown, two water inlets are provided on the sealed cover plate, and water liquid can be injected into the interior of the test box 1 through the two water inlets, and the two water inlets are filled with plungers.

[0037] In this embodiment, the test box 1 is filled with hot water and soaked for a period of time. The shrinkage of the chemical fiber filaments 4 at different temperatures will be reflected in the tension of the chemical fiber filaments 4. The temperature parameter of the water and the parameter of the tension of the chemical fiber filaments 4 are formed into a function graph, and multiple groups of data are collected to calculate the thermal shrinkage performance of the chemical fiber filaments at different temperatures. After the toggle bar 501 and the steel rod 802 are corrosion-resistant treated, they can work in the water liquid environment for a long time.

[0038] In a further embodiment of the present invention, as Figure 1-2 shown, an electric heating wire is provided on the sealed cover plate, and a temperature detection mechanism is provided on the inner side wall of the test box 1. The temperature detection mechanism is connected to the data processing module through a data line.

[0039] In this embodiment, the electric heating wire applies a high temperature exceeding 100 degrees Celsius to the chemical fiber filaments. The shrinkage of the chemical fiber filaments 4 at high temperatures will be reflected in the tension of the chemical fiber filaments 4. The ambient temperature of the test box 1 and the parameter of the tension of the chemical fiber filaments 4 are formed into a function graph, and multiple groups of data are collected to calculate the thermal shrinkage performance of the chemical fiber filaments at different temperatures.

[0040] In a further embodiment of the present invention, as Figure 1-8 shown, the data processing module is connected to an external computer device. The data processing module transmits the function graph formed by the temperature and the tensile vertical to the computer device, and the data processing module is also connected to a printing device.

[0041] In this embodiment, the function graph formed by the temperature and the tension parameter of the chemical fiber filaments 4 is formed into a paper document through a printing device for inspection personnel to analyze.

[0042] It should be noted that, for the foregoing embodiments, for the sake of simple description, they are all described as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, some steps may be in other sequences or carried out simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0043] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above division of units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the shown or discussed coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0044] The units described as separate components above may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative work, combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the situation, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A fully automatic heat shrinkage instrument for chemical fiber filaments, characterized in that: The test box (1) comprises a test box (1), wherein a detachable sealed cover is provided in front of the test box (1), a bottom plate (2) is fixedly installed below the test box (1), a top plate (3) is fixedly installed above the test box (1), and a hanging wire mechanism is provided on the bottom surface of the bottom plate (2) and the top surface of the top plate (3); The wire hanging mechanism includes a limiter track (7) on the side walls of the bottom plate (2) and the top plate (3), a slide limiter (701) is slidably installed on the limiter track (7), and the slide limiter (701) is fixed to the side wall of the limiter track (7) by a locking bolt (702), a hook plate (703) is provided on the rear side wall of the slide limiter (701), and a threading groove (201) matching the hook plate (703) is provided on the side walls of the bottom plate (2) and the top plate (3), and eight hook needles (704) in a straight line array are provided on the side wall of the hook plate (703), and two chemical fiber filaments (4) are arranged between the upper and lower hook needles (704); A tension sensor is provided at the root of each hook needle (704), and the tension sensor is connected to a data processing module via a data line; The chemical fiber filament (4) is connected to a load applying mechanism; The load applying mechanism comprises an inclined slot frame (801) on the inner side wall of the test box (1), the inclined slot frame (801) and the vertical line form an angle of 10 degrees, an inclined block (8) is slidingly provided inside the inclined slot frame (801), a steel rod (802) is provided on the side wall of the inclined block (8), a cantilever plate (9) is provided on the end of the steel rod (802) facing away from the inclined block (8), an electric push rod (901) is provided at the end of the cantilever plate (9), a toggle plate (5) is provided on the telescopic rod of the electric push rod (901), eight toggle bars (501) in a straight line array are provided on the side wall of the toggle plate (5) facing away from the electric push rod (901), the spacing between the toggle bars (501) is equal to the spacing between the chemical fiber filaments (4), the toggle bars (501) are evenly interspersed in the gaps between the chemical fiber filaments (4), and the steel rod (802) is connected to the vertical propulsion assembly.

2. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 1, wherein: The vertical propulsion assembly comprises two shaft seats (6) on the right side wall inside the test box (1), a screw rod (601) is rotatably provided in the middle of the shaft seat (6), the screw rod (601) is connected to the output shaft of the stepping motor (603), a nut block (606) is sleeved on the screw rod (601), a notch frame (605) is provided at the left end of the nut block (606), a steel rod (802) is inserted into the inside of the notch frame (605), and a nut fixing assembly is also provided on the right side wall inside the test box (1).

3. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 2, characterized in that: The nut securing assembly comprises a linear slot frame (602) on the right side wall inside the test box (1), and an insert block (604) inserted into the linear slot frame (602) is provided at the right end of the nut block (606).

4. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 3, characterized in that: The surfaces of the toggle bar (501) and the steel rod (802) are subjected to grinding and polishing treatment, and the surfaces of the toggle bar (501) and the steel rod (802) are subjected to corrosion resistance treatment.

5. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 1, wherein: The sealed cover plate is provided with two water inlets, through which water can be injected into the interior of the test box (1), and the two water inlets are filled with plungers.

6. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 1, characterized in that: The sealed cover is provided with a heating wire, and the inner wall of the test box (1) is provided with a temperature detection mechanism, which is connected to the data processing module via a data line.

7. The fully automatic chemical fiber filament heat shrinkage instrument according to claim 6, characterized in that: The data processing module is connected to an external computer device, and transmits a vertical function graph of temperature and tension to the computer device. The data processing module is also connected to a printing device.

8. A method for using a fully automated fiber heat shrinkage instrument according to any one of claims 1 to 7, characterized in that: S1. Tie the two ends of the chemical fiber filament (4) into a knot, and hang the knots at both ends of the chemical fiber filament (4) on two hook needles (704) at the upper and lower sides. When the two hook needles (704) are aligned up and down, the chemical fiber filament (4) forms a relaxed state, and the inspector can observe the stretching of the chemical fiber filament (4) under its own weight; S2. The upper hook plate moves a distance to the right and the lower hook plate is fixed, so that the chemical fiber filament (4) is tightened and then the sliding limiter (701) is fixed with the locking bolt (702). At the same time, the stepping motor (603) drives the nut block (606) to slide up and down through the screw rod (601). The notch frame (605) on the left side of the nut block (606) pushes the inclined block (8) to slide up and down through the steel rod (802). When the inclined block (8) is pushed to the top of the stroke, the electric push rod (901) drives the toggle plate (5) and the toggle bar (501) to extend and insert into the gap of the chemical fiber filament (4). When the toggle plate (5) and the toggle bar (501) slide downward, the toggle bar (501) will gradually squeeze the chemical fiber filament (4) to the left to apply a uniform load and record it; S3. Fill the test box 1 with hot water and soak it for a period of time. The shrinkage of the chemical fiber filament (4) at different temperatures will be reflected in the tension of the chemical fiber filament (4). The water temperature parameters and the parameters of the tension of the chemical fiber filament (4) are formed into a function chart, and multiple sets of data are collected to calculate the thermal shrinkage performance of the chemical fiber filament at different temperatures.

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