High-elastic knitted fabric pleat removing device and pleat removing method

Abstract

The invention discloses a high-elastic knitted fabric pleat removing device and method. The high-elastic knitted fabric pleat removing device comprises a mounting frame, a plurality of clamping assemblies for clamping fabric, a deformation assembly for driving the fabric to deform, a loosening assembly for loosening the fabric, an ironing assembly and a rolling assembly. The loosening assembly, the winding assembly and the ironing assembly are all mounted on the mounting frame; wet relaxation treatment and cooling treatment are carried out on the wave-shaped fabric, wrinkles generated due to the difference of elastic recovery rates between stretch yarns and other fibers are effectively relieved, stress can be evenly distributed when the fabric is stressed through wave-shaped deformation, local stress concentration is reduced, and therefore the possibility of wrinkle forming is reduced; meanwhile, the situation that the stretch yarn is adhered to other fibers at high temperature is effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of fabric depletion, and in particular to a depletion device and a depletion method for high-elastic knitted fabric. Background Art

[0002] High-elastic knitted fabric is a kind of fabric that is woven by knitting technology and has significant elastic recovery ability. It is usually blended or interwoven with high-elastic fibers (such as Lycra, spandex, etc.) and other fibers (such as cotton, polyester, nylon, etc.). It can quickly recover to its original shape after being stretched by external forces, showing good elasticity and extensibility. This kind of fabric is not only comfortable to wear and has strong adaptability, but also has good air permeability and moisture absorption. It is widely used in clothing, underwear, sports equipment and other fields

[0003] However, during the production and processing of such fabrics, wrinkles are easily formed due to factors such as fluctuations in weaving tension, stretching deformation, equipment technology and human operation. For example, traditional wrinkle removal methods mostly use high-temperature ironing or mechanical stretching, but because the elastic recovery rate of elastic yarns in high-elastic knitted fabrics is usually higher than that of other fibers, when the fabric is subjected to external forces (such as ironing, stretching, etc.), the elastic yarns may quickly return to their original state, while other fibers recover more slowly. This difference may cause wrinkles on the surface of the fabric, making these methods often have disadvantages such as low efficiency, high energy consumption, and easy damage to the fabric. Traditional wrinkle removal methods are difficult to achieve ideal wrinkle removal effects.

[0004] Therefore, it is necessary to design a high-elastic knitted fabric pleat removal device and pleat removal method to solve the above problems. Summary of the invention

[0005] The invention overcomes the shortcomings of the prior art and provides a pleat removal device and a pleat removal method for high-elastic knitted fabrics.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a high-elastic knitted fabric pleat removal device, comprising: a mounting frame, a plurality of clamping components for clamping the fabric, a deformation component for driving the fabric to deform, a relaxation component for relaxing the fabric, and an ironing component and a winding component; the relaxation component, the winding component and the ironing component are all mounted on the mounting frame;

[0007] A plurality of clamping assemblies are symmetrically installed on both sides of the deformation assembly, and the deformation assembly includes: a base, a roller shaft rotatably installed on the base, and a telescopic rod fixed to the base; the telescopic rod drives the base to move up and down, drives the fabric to deform in a wave shape, so that the gap between the fabric fibers gradually decreases from the roller shaft toward the clamping assemblies on both sides;

[0008] The relaxation component includes: a wetting part and a crystallization part; the fabric is output from the wetting part to the crystallization part, the wetting part is located on the left side of the roller to wet the fabric, and the crystallization part is located on the right side of the roller to cool the wetted fabric;

[0009] The ironing component and the rolling component are located on the right side of the crystallization part, respectively ironing and rolling the fabric.

[0010] In a preferred embodiment of the present invention, the clamping assembly comprises: a clamping roller group symmetrically mounted on both sides of the roller shaft, and a driving part driving the clamping roller group to rotate synchronously;

[0011] The clamping roller group includes: a first clamping roller and a second clamping roller; the first clamping roller and the second clamping roller are both rotatably mounted on the mounting frame, and the ends of the first clamping roller and the second clamping roller on the same side are both fixed with a first gear and mesh with each other;

[0012] The driving part comprises: a plurality of second gears, a toothed chain driving the plurality of second gears to rotate synchronously, and a first motor driving the second gears to rotate; the second gears are fixedly mounted on the end of the first clamping roller.

[0013] In a preferred embodiment of the present invention, the wetting part includes: a shield plate, and a plurality of atomizing nozzles installed on the shield plate; the plurality of atomizing nozzles are connected to an external atomizing treatment device, and water mist is sprayed on the fabric through the atomizing nozzles.

[0014] In a preferred embodiment of the present invention, the crystallization part includes: the crystallization part has the same structure as the wet part, and liquid nitrogen is atomized and sprayed on the surface of the fabric.

[0015] In a preferred embodiment of the present invention, the ironing assembly includes: a support plate and a de-pleating roller; the support plate is fixedly mounted on a mounting frame, and the de-pleating roller is located above the support plate and is rotatably connected to the mounting frame.

[0016] In a preferred embodiment of the present invention, the winding assembly includes: a winding roller, and a second motor that drives the winding roller to rotate; the winding roller is rotatably mounted on a mounting frame, the second motor is fixedly mounted on the mounting frame, and its output end is fixedly connected to the axis of the winding roller.

[0017] A method for removing wrinkles from a high-elastic knitted fabric comprises the following steps:

[0018] Step S1, clamping the fabric by a clamping component to keep the fabric in a naturally straightened state;

[0019] Step S2, driving the fabric in a natural state to deform in a wave-like manner by a deformation component, so that the gaps between the fabric fibers gradually decrease from the convex deformation position toward the two sides, forming a rupture zone and a recovery zone;

[0020] Step S3, wetting the fabric in the ruptured area and cooling the fabric in the recovered area;

[0021] Step S4, heating and shaping the fabric after the cooling treatment, and then rolling it up.

[0022] In a preferred embodiment of the present invention, in step S2, the distribution order of the rupture zone and the recovery zone is the output direction of the fabric, wherein the rupture zone is specifically an area where the gap between the fabric fibers gradually increases from small to large, and the recovery zone is specifically an area where the gap between the fabric fibers gradually decreases from large to small.

[0023] In a preferred embodiment of the present invention, in step S3, the wetting treatment is specifically to spray water on the fabric in the rupture zone in an atomized manner for 5-8 seconds, so that the fabric is in a semi-wet state with a water content of 45%-50%.

[0024] In a preferred embodiment of the present invention, in step S3, the cooling treatment is specifically to spray liquid nitrogen in an atomized manner on the fabric in the recovery zone for 5-8 seconds to adjust the crystallinity of the fabric fibers and promote the elastic recovery capabilities of different fibers to be close to the same.

[0025] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0026] (1) The present invention provides a de-wrinkling device and a de-wrinkling method for high-elastic knitted fabrics. By subjecting the wavy fabrics to a moist relaxation treatment and a cooling treatment, the internal structure of the fabric fibers becomes tighter and more stable, and the wrinkles caused by the difference in elastic recovery rate between the elastic yarn and other fibers are effectively alleviated. The wavy deformation enables the fabric to evenly distribute stress when subjected to force, thereby reducing local stress concentration and reducing the possibility of wrinkle formation. At the same time, it effectively prevents the elastic yarn from adhering to other fibers at high temperatures.

[0027] (2) The present invention destroys the tension between the fibers of the fabric by performing wave-like deformation on the fabric, so that the water mist and atomized liquid nitrogen can gradually diffuse to the surface and inside of the fabric, thereby ensuring the uniformity of the wetting of the fabric and ensuring that the overall temperature of the fabric is more consistent, thereby improving the uniformity of cooling, and adjusting the crystallinity of different fibers in the fabric to be close to the same, thereby making the elastic recovery ability of different fibers close to the same, promoting more uniform heating of the fabric during ironing and de-wrinkling, improving the ironing efficiency, and reducing the generation of wrinkles.

[0028] (3) The present invention destroys the tension between fabric fibers by performing wave-like deformation on the fabric, and gradually reduces the tension between the fabric and the water mist and atomized liquid nitrogen, so that the water mist and atomized liquid nitrogen can penetrate into the fabric in a layer-by-layer progressive manner, so that the water mist and atomized liquid nitrogen can gradually diffuse to the surface and interior of the fabric, thereby improving the efficiency of penetration, ensuring the uniformity of fabric wetting, and ensuring that the overall temperature of the fabric is more consistent, thereby improving the uniformity of cooling.

[0029] (4) The present invention sprays atomized liquid nitrogen on the wet fabric. The moisture in the fabric can act as a medium to promote the atomized liquid nitrogen to penetrate more evenly into the fabric, and can transfer the low temperature of the liquid nitrogen more quickly, so that the fabric fibers can be quickly cooled, which helps to fix the current shape of the fibers, reduce deformation and shrinkage in subsequent processing, and make the fabric absorb and conduct heat more evenly. The heat during ironing can penetrate into the fibers more effectively, and the stress can be distributed more evenly. After ironing, the rearrangement and combination of the fibers can be quickly promoted, which helps to enhance the shaping ability of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a three-dimensional structural diagram of a high-elastic knitted fabric pleat removal device of the present invention;

[0032] Figure 2 The present invention Figure 1 A is an enlarged schematic diagram;

[0033] Figure 3 It is a bottom view schematic diagram of a high-elastic knitted fabric wrinkle removal device of the present invention;

[0034] Figure 4 It is a flow chart of a method for removing wrinkles from a high-elastic knitted fabric of the present invention;

[0035] In the figure: 1. mounting frame; 2. base; 3. roller; 4. telescopic rod; 5. wetting part; 6. crystallization part; 7. first clamping roller; 8. second clamping roller; 9. first gear; 10. second gear; 11. tooth chain; 12. first motor; 13. shield plate; 14. atomizing nozzle; 15. support plate; 16. de-wrinkling roller; 17. winding roller; 18. second motor. DETAILED DESCRIPTION

[0036] 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.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0040] like Figure 1 and Figure 3 As shown, a pleat removal device for high-elastic knitted fabrics comprises: a mounting frame 1, a plurality of clamping components for clamping fabrics, a deformation component for driving the fabrics to deform, a relaxation component for relaxing the fabrics, and an ironing component and a winding component; the relaxation component, the winding component and the ironing component are all mounted on the mounting frame 1;

[0041] A plurality of clamping components are symmetrically installed on both sides of the deformation component, and the deformation component includes: a base 2, a roller 3 rotatably installed on the base 2, and a telescopic rod 4 fixed to the base 2; the telescopic rod 4 drives the base 2 to move up and down, drives the fabric to deform in a wave shape, so that the gap between the fabric fibers tends to gradually decrease from the roller 3 toward the clamping components on both sides;

[0042] The relaxation component includes: a wetting section 5 and a crystallization section 6; the fabric is output from the wetting section 5 to the crystallization section 6, the wetting section 5 is located on the left side of the roller 3 to wet the fabric, and the crystallization section 6 is located on the right side of the roller 3 to cool the wetted fabric;

[0043] The ironing assembly and the rolling assembly are located on the right side of the crystallization part 6 in sequence, and are used to iron and roll up the fabrics respectively.

[0044] The fabric is output from the wetting section 5 to the crystallization section 6. It is necessary to make the length of the fabric between the several clamping components consistent in the natural state. Therefore, the fabric is clamped by the several clamping components to keep the fabric in a naturally straightened state. In order to facilitate the subsequent deformation of the fabric, at this time, the deformation component is located below the fabric and does not contact the fabric. Because the deformation component is located in the middle of the several clamping components, the fabric is driven to deform by the deformation component. Specifically, the telescopic rod 4 drives the base 2 to move in the direction of the fabric, and also drives the roller 3 rotatably connected to the base 2 to move upward until the roller 3 contacts the fabric, and drives the fabric clamped by the several clamping components to deform until the deformation is wavy. Moreover, the fabric on both sides of the roller 3 is clamped by the clamping components, so the gap between the fibers of the wavy fabric will change, so that the gap between the fibers of the fabric tends to gradually decrease from the roller 3 to the clamping components on both sides. The wetting section 5 is used to first perform atomization wetting treatment on the position where the gap between the fibers of the fabric gradually increases, and then the crystallization section 6 is used to perform liquid nitrogen atomization treatment on the position where the gap between the fibers of the fabric gradually decreases.

[0045] Among them, atomization wetting treatment is performed in the area where the gaps between fabric fibers gradually increase. As the gaps gradually increase, the water mist can be more evenly distributed between the fabric fibers, reducing the uneven wetting situation and facilitating the smooth progress of subsequent treatments; the water mist can more easily penetrate into the deep layers of the fabric fibers in the larger gaps, softening the fibers and reducing the friction between the fibers;

[0046] Liquid nitrogen atomization treatment is performed at the position where the gaps between fabric fibers are gradually reduced. Since the gaps between fabric fibers are smaller at this time, the atomized liquid nitrogen can more closely contact the fiber surface, forming a tiny cooling area, thereby more effectively reducing the fabric temperature; the rapid cooling effect of liquid nitrogen can quickly lock the fiber arrangement state formed during the wave-like deformation of the fabric, reduce the thermal stress caused by temperature changes, and at the same time, it can lock moisture in the fiber more quickly to keep it moist, while ensuring that the fiber can quickly return to a new shape when cooled, thereby effectively preventing wrinkles from forming;

[0047] By combining moistening and cooling treatments, the physical state of the fabric can be improved more comprehensively. The moistening treatment softens the fibers and reduces resistance, while the cooling treatment further consolidates the fiber arrangement structure. The synergistic effect of the two makes the wrinkle removal effect more significant. When the fabric fibers are in a relatively stretched state, the rapid cooling effect of liquid nitrogen can accelerate the fabric shaping process and reduce the possibility of wrinkles forming again during subsequent processing or use.

[0048] like Figure 2 As shown, in the present invention, the clamping assembly includes: a clamping roller group symmetrically installed on both sides of the roller shaft 3, and a driving part driving the clamping roller group to rotate synchronously;

[0049] The clamping roller group includes: a first clamping roller 7 and a second clamping roller 8; the first clamping roller 7 and the second clamping roller 8 are both rotatably mounted on the mounting frame 1, and the ends of the first clamping roller 7 and the second clamping roller 8 on the same side are both fixed with a first gear 9, and are meshed with each other;

[0050] The driving part includes: a plurality of second gears 10, a toothed chain 11 driving the plurality of second gears 10 to rotate synchronously, and a first motor 12 driving the second gears 10 to rotate; the second gears 10 are fixedly mounted on the end of the first clamping roller 7;

[0051] During the process of depleting the fabric, the fabric needs to always move toward the direction of the winding component. While clamping the fabric, the clamping component needs to transport the fabric. The first motor 12 drives the second gear 10 fixed to its output end to rotate, and the toothed chain 11 drives the first clamping roller 7 on all the clamping roller groups to rotate synchronously. The ends of the first clamping roller 7 and the second clamping roller 8 are fixed with the first gear 9 that meshes with each other, so the second clamping roller 8 and the first clamping roller 7 are synchronously rotated in the opposite direction, so that the clamping assembly can clamp and fix the fabric while driving the fabric to move toward the winding component, which helps to wind the fabric.

[0052] In the present invention, the wetting part 5 includes: a shield plate 13, and a plurality of atomizing nozzles 14 installed on the shield plate 13; the plurality of atomizing nozzles 14 are connected to an external atomizing treatment device, and water mist is sprayed on the fabric through the atomizing nozzles 14;

[0053] The wetting section 5 is installed in an area where the gaps between fabric fibers gradually increase, and the fabric in this area is gradually wetted. As the gaps gradually increase, the water mist can be more evenly distributed between the fabric fibers, reducing uneven wetting and facilitating the smooth progress of subsequent treatments. The water mist can more easily penetrate into the deep layers of the fabric fibers in larger gaps, which helps soften and stretch the fibers and reduce friction between the fibers, providing favorable conditions for subsequent cooling treatments.

[0054] The crystallization part 6 includes: the crystallization part has the same structure as the wet part, and is sprayed on the surface of the fabric by atomizing liquid nitrogen.

[0055] The crystallization part 6 is installed in the area where the gap between the fabric fibers is gradually reduced, and the liquid nitrogen atomization treatment is performed at the position where the gap between the fabric fibers is gradually reduced. Since the gap between the fabric fibers is smaller at this time, the atomized liquid nitrogen can contact the fiber surface more closely, forming a small cooling area, thereby more effectively reducing the fabric temperature; the rapid cooling effect of the liquid nitrogen can quickly lock the fiber arrangement state formed in the wave-like deformation process of the fabric, reducing the thermal stress caused by temperature changes;

[0056] It is worth mentioning that after the fabric is cooled, the crystallinity of the fibers in the fabric will be increased, making the internal structure of the fibers tighter and more stable, allowing the fabric to better maintain its shape during ironing, helping to reduce wrinkles caused by the difference in recovery speed between elastic yarn and other fibers, and better maintain its shape.

[0057] Among them, by firstly wetting the area where the gaps between the fabric fibers are gradually increasing, and then performing liquid nitrogen atomization treatment on the position where the gaps between the fabric fibers are gradually decreasing, the physical state of the fabric can be improved more comprehensively. The wetting treatment softens the fibers and reduces the resistance, while the cooling treatment further consolidates the arrangement structure of the fibers. The synergistic effect of the two makes the wrinkle removal effect more significant. When the fabric fibers are in a relatively stretched state, the rapid cooling effect of liquid nitrogen can accelerate the shaping process of the fabric and reduce the possibility of wrinkles forming again during subsequent processing or use.

[0058] Specifically, wet fabrics can better conduct the low temperature of liquid nitrogen, so that all parts of the fabric can reach the required low temperature state more evenly, which helps to reduce the problem of inconsistent fiber shrinkage caused by uneven temperature, and helps to reduce wrinkles caused by the difference in recovery speed between elastic yarn and other fibers. Wet treatment can slow down the temperature drop of the fabric during liquid nitrogen treatment to a certain extent, thereby reducing the thermal stress caused by rapid temperature changes and protecting the fiber structure from damage.

[0059] The moisture in the wet fabric may help the fiber maintain a certain plasticity at low temperatures, allowing the liquid nitrogen treatment to more deeply affect the fiber structure, thereby improving the treatment effect. The combination of wet treatment and liquid nitrogen treatment can help further improve the wrinkle resistance of the fabric. The wet fabric may be easier to restore to a flat state after liquid nitrogen treatment, reducing the formation of wrinkles.

[0060] In the present invention, the ironing assembly includes: a support plate 15 and a de-pleating roller 16; the support plate 15 is fixedly mounted on the mounting frame 1, the de-pleating roller 16 is located above the support plate 15 and is rotatably connected to the mounting frame 1, wherein the de-pleating roller 16 is a heating roller, which is a prior art and will not be elaborated on in detail herein;

[0061] After the fabric is cooled in the crystallization section 6, it enters between the support plate 15 and the de-wrinkle roller 16, and is pressed on the fabric by the de-wrinkle roller 16 to perform an ironing process on the fabric.

[0062] In the present invention, the winding assembly includes: a winding roller 17, and a second motor 18 driving the winding roller 17 to rotate; the winding roller 17 is rotatably mounted on the mounting frame 1, and the second motor 18 is fixedly mounted on the mounting frame 1, and its output end is fixedly connected to the axis of the winding roller 17.

[0063] like Figure 4 As shown, a method for removing wrinkles from a high-elastic knitted fabric comprises the following steps:

[0064] Step S1, clamping the fabric by a clamping component to keep the fabric in a naturally straightened state;

[0065] Step S2, driving the fabric in a natural state to deform in a wave-like manner by a deformation component, so that the gaps between the fabric fibers gradually decrease from the convex deformation position toward the two sides, forming a rupture zone and a recovery zone;

[0066] By subjecting the fabric to wavy deformation, it not only helps to rearrange the gaps between the fabric fibers, but also consciously guides the coordinated recovery of the elastic yarn and other fibers during the deformation process, so that the gaps between the fabric fibers gradually decrease from the convex deformation position to both sides, so that the difference in recovery speed between the elastic yarn and the surrounding fibers is buffered, thereby reducing wrinkles caused by rapid recovery;

[0067] Step S3, wetting the fabric in the ruptured area and cooling the fabric in the recovered area;

[0068] The wetting treatment is to spray water on the fabric in the ruptured area in an atomized manner for 5-8 seconds, so that the fabric is in a semi-wet state with a water content of 45%-50%;

[0069] The cooling treatment is to spray liquid nitrogen on the fabric in the recovery area in an atomized manner for 5-8 seconds to adjust the crystallinity of the fabric fibers and make the elastic recovery ability of different fibers approach the same;

[0070] The wetting section 5 wets the fabric in the ruptured area, which helps soften and stretch the fibers, providing favorable conditions for subsequent cooling treatment. The crystallization section 6 uses liquid nitrogen atomization to cool the fabric in the recovery area quickly, reducing the risk of the elastic yarn adhering to other fibers at high temperatures. At the same time, the rapid evaporation of liquid nitrogen also takes away the heat on the surface of the fabric, accelerating the drying process of the fabric and avoiding wrinkles and deformation caused by long-term wetting.

[0071] Step S4, heating and shaping the fabric after the cooling treatment, and then rolling it up.

[0072] The fabric in the ruptured area is subjected to atomization and wetting treatment. Since the gap in the output direction of the fabric in the ruptured area is gradually increased, the water mist can be more evenly distributed between the fabric fibers, reducing the uneven wetting situation and facilitating the smooth progress of subsequent treatment; the water mist can more easily penetrate into the deep layer of the fabric fiber in the larger gap, soften the fiber and reduce the friction between the fibers;

[0073] The fabric in the recovery area is treated with liquid nitrogen atomization. Since the gap in the output direction of the fabric in the recovery area is gradually reduced, the atomized liquid nitrogen can contact the fiber surface more closely, forming a tiny cooling area, thereby more effectively reducing the fabric temperature; the rapid cooling effect of liquid nitrogen can quickly lock the fiber arrangement state formed in the wave-like deformation process of the fabric, reducing the thermal stress caused by temperature changes;

[0074] Specifically, the atomized liquid nitrogen quickly penetrates into the fabric fiber, causing the outer shell of the fiber to shrink, the inner core to expand, and the cross-section to change from flat to round, thereby reducing the radial distortion of the fiber, making the surface smooth, improving the crystal structure of the fiber, eliminating internal stress, and increasing tensile strength and tear strength;

[0075] By combining moistening and cooling treatments, the physical state of the fabric can be improved more comprehensively. The moistening treatment softens the fibers and reduces resistance, while the cooling treatment further consolidates the fiber arrangement structure. The synergistic effect of the two makes the wrinkle removal effect more significant. When the fabric fibers are in a relatively stretched state, the rapid cooling effect of liquid nitrogen can accelerate the fabric shaping process, help fix the fabric in the ideal state formed after the wavy deformation, and reduce the possibility of wrinkles forming again during subsequent processing or use.

[0076] In the present invention, in step S2, the distribution order of the rupture zone and the recovery zone is the output direction of the fabric, wherein the rupture zone is specifically the area where the gaps between the fabric fibers gradually increase from small to large, and the recovery zone is specifically the area where the gaps between the fabric fibers gradually decrease from large to small.

[0077] Experimental example:

[0078] 1. Purpose of the experiment

[0079] In summary, the effects of different spraying amounts of atomized liquid nitrogen on the crystallinity of high-elastic knitted fabric fibers and their performance on fabric properties were studied to further clarify the optimal spraying amount;

[0080] 2. Experimental Preparation

[0081] 1. Experimental preparation

[0082] Four groups of identical polyester high-elastic knitted fabrics are prepared, and the fiber composition of the polyester high-elastic knitted fabrics includes: 50% cotton fiber + 50% polyester fiber, wherein the crystallinity of the cotton fiber is 70%, and the crystallinity of the polyester fiber is 55%.

[0083] (II) Performance testing

[0084] 1. Crystallinity detection: Use an X-ray diffractometer to test the crystallinity of each group of samples, record the diffraction pattern and calculate the crystallinity. The crystallinity calculation formula is set as follows: crystallinity = Ic / (Ic+Ia)×100%, where Ic is the crystalline peak intensity and Ia is the amorphous peak intensity.

[0085] 2. Anti-wrinkle performance test: Use a wrinkle tester to test the anti-wrinkle performance of each group of samples, and record the wrinkle degree of each sample under specific temperature and humidity (score from 1 to 10, 1 means very easy to wrinkle, and 10 means no wrinkles at all).

[0086] 3. Tensile recovery rate test: Use a tensile testing machine to apply a fixed tensile force (10N) and record the recovery time of the sample after the force is applied.

[0087] (II) Embodiment of using a high-elastic knitted fabric de-wrinkling device of the present invention

[0088] Embodiment 1: Select one group of polyester high-elastic knitted fabrics and clamp the fabrics through a clamping component to keep the fabrics in a naturally straightened state; drive the fabrics in this natural state to deform in a wave-like manner through a deformation component, so that the gaps between the fabric fibers gradually decrease from the convex deformation position toward the two sides, forming a rupture zone and a recovery zone;

[0089] The fabric in the ruptured area was sprayed with atomized liquid nitrogen for 5 seconds at a spray volume of 0.5 ml per square centimeter to ensure that the moisture content of each sample was 45%-50%. The fabric in the same position of the recovery area was sprayed with atomized liquid nitrogen at a spray volume of 1 ml per square centimeter for 5 seconds. Subsequently, the fabric was subjected to standard ironing and heating, with the temperature set at 160°C and the pressure at 3 kg / cm 2 , lasting for 5s, and then winding up.

[0090] Example 2: The same as Example 1, except that atomized liquid nitrogen is sprayed on the fabric at the same position of the recovery area, with a spraying amount of 2 ml per square centimeter for 5 seconds. Subsequently, the fabric is subjected to standard ironing and heating, with the temperature set at 160°C and the pressure at 3 kg / cm 2 , lasting for 5s, and then winding up.

[0091] Example 3: The same as Example 1, except that atomized liquid nitrogen is sprayed on the fabric at the same position of the recovery area, with a spraying amount of 3 ml per square centimeter for 5 seconds, and then the fabric is subjected to standard ironing and heating, with the temperature set at 160°C and the pressure at 3 kg / cm 2 , lasting for 5s, and then winding up.

[0092] Example 4: The same as Example 1, except that atomized liquid nitrogen is sprayed on the fabric at the same position of the recovery area, with a spraying amount of 4 ml per square centimeter for 5 seconds, and then the fabric is subjected to standard ironing and heating, with the temperature set at 160°C and the pressure at 3 kg / cm 2 , lasting for 5s, and then winding up.

[0093] Under different spraying amounts, the crystallinity of each group of fabric fibers, the tensile recovery rate of the fabric during heating and shaping, and other properties were tested, as shown in Table 1;

[0094] Table 1

[0095]

[0096] In summary, by comparing Examples 1 to 4, the crystallinity of the fibers in the fabric can be changed while the atomized liquid nitrogen is sprayed on the fabric for cooling treatment. The liquid nitrogen treatment will quickly reduce the temperature of the fiber, resulting in rapid shrinkage of the internal structure of the fiber and changes in the crystal structure, thereby affecting its crystallinity. By adjusting the crystallinity of different fibers after atomized liquid nitrogen treatment, it is found that the crystallinity of the fibers changes. This indicates that the low-temperature treatment of liquid nitrogen promotes the rearrangement and ordering of the polymer chains inside the fibers, thereby increasing the crystallinity. Different fibers have different responses to liquid nitrogen treatment, which may be related to factors such as the chemical structure of the fiber, the intermolecular interaction force, and the initial crystallization state.

[0097] Among them, by spraying low-temperature atomized liquid nitrogen on the fabric, the low temperature slows down the movement of the fiber molecular chains, and partially destroys the ordered crystalline structure, thus converting it into a more disordered state. It can induce the rearrangement of the fiber molecular chains and promote the local reorganization of the internal structure of the fiber, so that the fiber molecular chains form a tighter and more ordered arrangement in the local area, thereby improving the crystallinity of the area to a certain extent.

[0098] When the present invention is used, during the process of removing pleats from the fabric, the fabric needs to always move toward the direction of the winding assembly. While clamping the fabric, the clamping assembly needs to convey the fabric. The first motor 12 drives the second gear 10 fixed to its output end to rotate, and the first clamping rollers 7 on all the clamping roller groups are driven to rotate synchronously through the toothed chain 11. The ends of the first clamping roller 7 and the second clamping roller 8 are fixed with the first gear 9 meshing with each other, so the second clamping roller 8 and the first clamping roller 7 are synchronously rotated in the opposite direction, so that the clamping assembly drives the fabric to move toward the winding assembly while clamping and fixing the fabric.

[0099] At this time, the deformation component is located below the fabric and is not in contact with the fabric. Since the deformation component is located in the middle of the plurality of clamping components, the fabric is driven to deform by the deformation component. Specifically, the telescopic rod 4 drives the base 2 to move toward the fabric, and also drives the roller 3 rotatably connected to the base 2 to move upward until the roller 3 contacts the fabric, and drives the fabric clamped by the plurality of clamping components to deform until the deformation is wavy. Moreover, the fabric on both sides of the roller 3 is clamped by the clamping components, so the gap between the fibers of the wavy fabric will change, so that the gap between the fibers of the fabric tends to gradually decrease from the roller 3 toward the clamping components on both sides. The wetting section 5 is first used to perform atomization wetting treatment on the position where the gap between the fibers of the fabric gradually increases, and then the crystallization section 6 is used to perform liquid nitrogen atomization treatment on the position where the gap between the fibers of the fabric gradually decreases.

[0100] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A pleat removal device for high-elastic knitted fabrics, comprising: A mounting frame, a plurality of clamping components for clamping fabrics, a deformation component for driving the fabrics to deform, a relaxation component for relaxing the fabrics, and an ironing component and a winding component; characterized in that the relaxation component, the winding component and the ironing component are all mounted on the mounting frame; A plurality of the clamping assemblies are symmetrically mounted on both sides of the deformation assembly, and the deformation assembly comprises: a base, a roller rotatably mounted on the base, and a telescopic rod fixed to the base; the telescopic rod drives the base to move up and down, driving the fabric to deform in a wave-like manner, so that the gaps between the fabric fibers gradually decrease from the roller toward the clamping assemblies on both sides; The relaxation component includes: a wetting part and a crystallization part; the fabric is output from the wetting part to the crystallization part, the wetting part is located on the left side of the roller to wet the fabric, and the crystallization part is located on the right side of the roller to cool the wetted fabric; The ironing assembly and the rolling assembly are located on the right side of the crystallization part in sequence, and are used to iron and roll the fabrics respectively.

2. A pleat removal device for high-elastic knitted fabric according to claim 1, characterized in that: The clamping assembly comprises: a clamping roller group symmetrically mounted on both sides of the roller shaft, and a driving part driving the clamping roller group to rotate synchronously; The clamping roller group includes: a first clamping roller and a second clamping roller; the first clamping roller and the second clamping roller are both rotatably mounted on the mounting frame, and the ends of the first clamping roller and the second clamping roller on the same side are both fixed with a first gear and mesh with each other; The driving part includes: a plurality of second gears, a toothed chain driving the plurality of second gears to rotate synchronously, and a first motor driving the second gears to rotate; the second gears are fixedly mounted on the end of the first clamping roller.

3. The pleat removal device for high elastic knitted fabric according to claim 1, characterized in that: The wetting part comprises: a shield plate, and a plurality of atomizing nozzles installed on the shield plate; the plurality of atomizing nozzles are connected to an external atomizing treatment device, and water mist is sprayed on the fabric through the atomizing nozzles.

4. The pleat removal device for high-elastic knitted fabric according to claim 1, characterized in that: The crystallization part has the same structure as the wet part, and liquid nitrogen is atomized and sprayed on the surface of the fabric.

5. A pleat removal device for high-elastic knitted fabric according to claim 1, characterized in that: The ironing assembly comprises: a support plate and a de-pleating roller; the support plate is fixedly mounted on the mounting frame, and the de-pleating roller is located above the support plate and is rotatably connected to the mounting frame.

6. The high-elastic knitted fabric wrinkle removal device according to claim 1, characterized in that: The winding assembly includes: a winding roller, and a second motor driving the winding roller to rotate; the winding roller is rotatably mounted on the mounting frame, the second motor is fixedly mounted on the mounting frame, and its output end is fixedly connected to the axis of the winding roller.

7. A method for removing wrinkles from a high-elastic knitted fabric, characterized in that: The following steps are involved: Step S1, clamping the fabric by a clamping component to keep the fabric in a naturally straightened state; Step S2, driving the fabric in a natural state to deform in a wave-like manner by a deformation component, so that the gaps between the fabric fibers gradually decrease from the convex deformation position toward the two sides, forming a rupture zone and a recovery zone; Step S3, wetting the fabric in the ruptured area and cooling the fabric in the recovered area; Step S4, heating and shaping the fabric after the cooling treatment, and then rolling it up.

8. A method for removing wrinkles from a high-elastic knitted fabric according to claim 7, characterized in that: In step S2, the distribution order of the rupture zone and the recovery zone is the output direction of the fabric, wherein the rupture zone is specifically a region where the gaps between fabric fibers gradually increase from small to large, and the recovery zone is specifically a region where the gaps between fabric fibers gradually decrease from large to small.

9. A method for removing wrinkles from a high-elastic knitted fabric according to claim 7, characterized in that: In step S3, the wetting treatment is specifically to spray water on the fabric in the ruptured area in an atomized manner for 5-8 seconds, so that the fabric is in a semi-wet state with a water content of 45%-50%.

10. A method for removing wrinkles from a high-elastic knitted fabric according to claim 7, characterized in that: In step S3, the cooling treatment is specifically to spray liquid nitrogen on the fabric in the recovery zone in an atomized manner for 5-8 seconds to adjust the crystallinity of the fabric fibers and make the elastic recovery capabilities of different fibers approach consistency.

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