A fully automated fiber filament heat shrinkage instrument

Abstract

The present invention is applicable to the field of textile equipment and provides a fully automated fiber filament heat shrinkage instrument, including a test box, a detachable sealed cover is provided in front of the test box, a bottom plate is fixedly installed below the test box, and a top plate is fixedly installed above the test box, and a wire hanging mechanism is provided on the bottom surface of the bottom plate and the top surface of the top plate; the wire hanging mechanism includes a limiter track on the side walls of the bottom plate and the top plate, and a slide limiter is slidably installed on the limiter track, and the slide limiter is fixed to the side wall of the limiter track by a locking bolt. In the present invention, the notch frame on the left side of the nut block pushes the inclined block up and down through a steel rod, and 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 filaments to apply load, and then the tension of the chemical fiber filaments changes relatively stably.

Description

Technical Field

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

[0002] With the advancement of industrial technology, modern textile equipment has become increasingly sophisticated. The thermal shrinkage of chemical fiber filaments is one of the key parameters characterizing fiber structure and properties, and is closely related to processes such as chemical fiber filament formation and post-processing. Traditional methods for testing the thermal shrinkage of chemical fiber filaments often rely on manual operations, which suffer from low testing efficiency, low accuracy, and complex operation. Furthermore, while some existing testing instruments have achieved automated testing, they still suffer from drawbacks such as unreasonable force measurement methods, low test accuracy, and bulky instrumentation. Therefore, the development of an efficient, accurate, and fully automated chemical fiber filament thermal shrinkage tester is of great significance.

[0003] Just like the chemical fiber filament dry heat shrinkage rate tester and test method disclosed in patent CN114965552A. This chemical fiber filament dry heat shrinkage rate tester includes: a filament fixing mechanism; a mobile heating mechanism, which includes a filament heating chamber; an image acquisition module, which is arranged below the filament hanging mechanism; a control module, which is electrically connected to the filament hanging mechanism, the mobile heating mechanism and the image acquisition module, suitable for controlling the mobile heating mechanism to move to the filament hanging mechanism, and controlling the filament heating chamber to heat the filament, and through the image acquisition module, respectively collecting the length displacement changes of the filament at the corresponding temperature to obtain the dry heat shrinkage rate of the filament. This chemical fiber filament shrinkage rate tester and test method adopts an image acquisition module to respectively collect the length displacement changes of the filament at the corresponding temperature to obtain the dry heat shrinkage rate of the filament;

[0004] The device still has defects when in use. First, the device has complex control over the tension load of the filament to be tested. If the tension increases rapidly, it will easily cause the chemical fiber filament to break, and it is difficult to capture the critical tensile force value of the chemical fiber filament when it 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 one of the fixed ends of the chemical fiber filament. At this time, the tension is not stable enough. Second, the chemical fiber filament needs to be tested many times before the physical properties of the chemical fiber filament can be accurately grasped. Temperature has a greater impact on chemical fiber filaments. At different temperatures, the ductility and hardness of chemical fiber filaments will change. In the past, chemical fiber filaments were tested at a specific temperature, which made it impossible to grasp the physical properties of chemical fiber filaments at different temperatures. Summary of the Invention

[0005] 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.

[0006] 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 removable 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, 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 a chemical fiber filament is connected 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] Furthermore, the sealed cover is provided with two water inlets, through which water is injected into the interior of the test box, and the two water inlets are filled with plungers.

[0012] 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.

[0013] Furthermore, the data processing module is connected to an external computer device, and the data processing module transmits the temperature and tension values ​​into a function graph to the computer device, and the data processing module is also connected to a printing device.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0015] 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.

[0016] 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

[0017] Figure 1 It is a schematic diagram of the front view of the present invention.

[0018] Figure 2 It is a schematic diagram of a side view of the present invention.

[0019] Figure 3 It is a schematic diagram of a cross-section of the present invention.

[0020] Figure 4 Schematic diagram of the limiter track of the present invention.

[0021] Figure 5 Schematic diagram of the inclined block of the present invention.

[0022] Figure 6 Schematic diagram of the electric push rod of the present invention.

[0023] Figure 7 Schematic diagram of the nut block of the present invention.

[0024] Figure 8 Schematic diagram of the hook needle of the present invention.

[0025] Description of reference numerals:

[0026] 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

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application 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.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] The present invention provides a fully automated fiber filament heat shrinkage instrument, such as Figure 1-8 As shown, it includes a test box 1, 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, and a top plate 3 is fixedly installed above the test box 1. 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 hanging wire mechanism includes a limiter track 7 on the side walls of the bottom plate 2 and the top plate 3, and 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 01, and the hook plate 703 is divided into an upper hook plate and a lower hook plate. The side walls of the bottom plate 2 and the top plate 3 are provided with a wire groove 201 matching the hook plate 703. Eight hook needles 704 in a straight line array are provided on the side wall of the hook plate 703, and a chemical fiber filament 4 is connected 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 the data processing module through a data cable; the chemical fiber filament 4 is connected to the load applying mechanism.

[0030] In this embodiment, the two ends of the chemical fiber filament are tied into a knot, and the rope knots at both ends of the chemical fiber filament are hung 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 is in a relaxed state, and the inspector can observe the stretching of the chemical fiber filament under its own weight. The upper hook plate moves a distance to the right and 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. The staff can then obtain the critical breaking value of the chemical fiber filament 4.

[0031] In a further embodiment of the present invention, 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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 .

[0036] 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 .

[0037] 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 ground and polished, and the surfaces of the toggle bar 501 and the steel rod 802 are subjected to corrosion resistance treatment.

[0038] In this embodiment, the toggle bar 501 and the steel rod 802 are ground and polished to reduce friction, thereby preventing the rust on the surface of the toggle bar 501 from scratching the chemical fiber filaments.

[0039] In a further embodiment of the present invention, Figure 1-2 As shown, the sealed cover is provided with two water inlets, through which water is injected into the interior of the test box 1 , and the two water inlets are filled with plungers.

[0040] 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 water temperature parameters and the parameters of the tension of the chemical fiber filaments 4 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. After the toggle bar 501 and the steel rod 802 are treated with corrosion resistance, they can operate for a long time in an aqueous environment.

[0041] In a further embodiment of the present invention, Figure 1-2 As shown, 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 through a data line.

[0042] In this embodiment, the heating wire applies a high temperature of more than one hundred degrees Celsius to the chemical fiber filaments. The shrinkage of the chemical fiber filaments 4 at high temperature will be reflected in the tension of the chemical fiber filaments 4. The parameters of the ambient temperature of the test box 1 and the tension of the chemical fiber filaments 4 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.

[0043] In a further embodiment of the present invention, Figure 1-8 As shown, the data processing module is connected to an external computer device, and the data processing module transmits the temperature and tension values ​​into a function graph to the computer device, and the data processing module is also connected to a printing device.

[0044] In this embodiment, the parameters of temperature and tension of the chemical fiber filament 4 form a function drawing, which is printed into a paper document for analysis by the inspection personnel.

[0045] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0046] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as 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 coupling or communication connection between each other shown or discussed 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.

[0047] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A fully automated fiber filament heat shrinkage instrument, 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 mounted on the limiter track (7), 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 a chemical fiber filament (4) is connected 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 automated fiber filament heat shrinkage instrument according to claim 1, characterized in that: 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 automated 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 automated 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 automated fiber filament heat shrinkage instrument according to claim 1, characterized in that: The sealed cover plate is provided with two water inlets, through which water is injected into the interior of the test box (1), and the two water inlets are filled with plungers.

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

8. The method for using the fully automated fiber filament heat shrinkage instrument according to claim 4, 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) is in 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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