Yarn online dyeing and weaving device and dyeing and weaving method thereof

Abstract

The invention relates to a yarn on-line dyeing and weaving device and a dyeing and weaving method thereof, and belongs to the technical field of photovoltaic module manufacturing. The yarn on-line dyeing and weaving method comprises the steps that S100, primary color yarn is dyed to form finished dyed yarn; and S200, weaving the finished dyed yarn to prepare the fabric. According to the invention, integration of yarn dyeing and weaving can be realized.

Description

Technical Field

[0001] The present invention relates to the field of textile equipment and weaving technology, and in particular to an online yarn dyeing and weaving device and a dyeing and weaving method thereof. Background Art

[0002] In the field of textile manufacturing technology, yarn dyeing and weaving are two core links that are directly related to the quality, cost and production efficiency of the final product. For a long time, the traditional yarn dyeing and weaving process has followed a relatively fixed pattern: first large-scale yarn dyeing, and then the dyed yarn is transported to the weaving factory for subsequent weaving processing. However, this seemingly reasonable production process has exposed a series of problems that need to be solved in actual operation, especially in terms of environmental protection, production efficiency, inventory flexibility and cost control, which has brought considerable challenges to textile companies.

[0003] The traditional yarn dyeing process is a highly polluting and energy-intensive process. During the dyeing process, a large amount of water resources and chemical dyes are used to ensure uniform coloring of the yarn, but this also leads to a large amount of wastewater containing harmful chemicals and dye residues after dyeing. According to statistics, on average, 100-200 tons of water are consumed for each dyeing and finishing process of 1 ton of textiles, of which 80-90% becomes wastewater. The country's dyeing and finishing plants discharge about 650 million tons of wastewater each year, accounting for 9.6% of the country's industrial wastewater discharge, mainly dyeing and finishing wastewater. With the awakening of global environmental awareness and increasingly stringent environmental regulations, how to reduce the discharge of dyeing wastewater and achieve a green and sustainable dyeing process has become an important issue that the textile industry needs to solve urgently.

[0004] Secondly, the traditional production model of separating yarn dyeing from weaving has significant efficiency bottlenecks and inventory risks. Since dyeing and weaving are two independent processes, dyeing factories need to produce and store yarns of various colors in advance for use by weaving factories. This not only increases inventory costs, but may also lead to a backlog or shortage of colored yarns due to changes in market demand, seriously affecting the flexibility and responsiveness of production plans. During the transportation and storage of yarns after dyeing, the color may also fade or the quality may deteriorate due to environmental, time and other factors, further affecting the quality of the final product. In addition, from dyeing to weaving, yarns need to be transported and stored many times, which not only increases transportation costs, but also occupies a large amount of warehouse space and increases storage costs. With the increasingly complex and changeable global supply chain, these additional costs have undoubtedly put greater pressure on the profitability of textile companies.

[0005] In summary, in today's textile manufacturing technology field, there is an urgent need to develop a more environmentally friendly, efficient and intensive production method to address the serious pollution, low production efficiency and high transportation costs in the traditional production model of separating yarn dyeing and weaving. Summary of the Invention

[0006] The purpose of this invention application is to overcome the defects existing in the prior art, and provide an on-line yarn dyeing and weaving device and its dyeing and weaving method, so as to partially or completely solve the technical problems existing in the existing production mode of separating yarn dyeing and weaving, and realize the integration of yarn dyeing and weaving. To achieve the above purpose, this invention application provides the following technical solutions:

[0007] In the first aspect, this invention application provides an on-line yarn dyeing and weaving device, including: a dyeing unit and a weaving unit. The output end of the dyeing unit corresponds to the input end of the weaving unit, and along the second direction, the dyeing unit and the weaving unit are arranged at intervals;

[0008] The dyeing unit includes a yarn guiding cylinder, a tension adjusting mechanism, a yarn coloring mechanism, an air filtering mechanism, a color fixing mechanism, a cleaning mechanism, a post-treatment mechanism and a first driving mechanism. The tension adjusting mechanism is located at the leftmost end of the dyeing unit. Along the first direction, the tension adjusting mechanism, the yarn coloring mechanism and the air filtering mechanism are arranged in sequence from left to right; along the second direction, the air filtering mechanism, the color fixing mechanism, the cleaning mechanism, the post-treatment mechanism and the driving mechanism are arranged in sequence from top to bottom; The raw yarn is led out from the yarn guiding cylinder and enters the tension adjusting mechanism. After the tension of the raw yarn is adjusted by the tension adjusting mechanism, it enters the yarn coloring mechanism for coloring. The yarn coloring mechanism colors the raw yarn to form a dyed yarn. After the dye is fixed by the color fixing mechanism and the residual dye and impurities are cleaned by the cleaning mechanism to form a colored yarn, and then the surface of the colored yarn is lubricated by the post-treatment mechanism to form a finished colored yarn. The finished colored yarn is introduced into the weaving unit;

[0009] The weaving unit includes a frame, a yarn feeding mechanism, a weaving mechanism, a second driving mechanism, a control system and a coiling mechanism; The yarn feeding mechanism, the weaving mechanism, the driving mechanism, the control system and the coiling mechanism are all installed on the frame. Along the second direction, the yarn feeding mechanism, the weaving mechanism and the coiling mechanism are arranged in sequence from top to bottom; The finished colored yarn is fed into the weaving mechanism by the yarn feeding mechanism. The weaving mechanism weaves the finished colored yarn into a fabric with a color pattern, and then the fabric with the color pattern is collected by the coiling mechanism.

[0010] Optionally, the yarn coloring mechanism includes a first yarn coloring component, a second yarn coloring component, a third yarn coloring component, and a fourth yarn coloring component. The first yarn coloring component includes a first ink cartridge, the second yarn coloring component includes a second ink cartridge, the third yarn coloring component includes a third ink cartridge, and the fourth yarn coloring component includes a fourth ink cartridge. The first yarn coloring component, the second yarn coloring component, the third yarn coloring component, and the fourth yarn coloring component also each include a micro hydraulic pump, a solenoid valve, an inkjet tube, and a nozzle. A micro hydraulic pump is provided inside each of the first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge, and the micro hydraulic pump is used to press out the ink. The micro hydraulic pump is connected to the ink inlet of the solenoid valve, the ink outlet of the solenoid valve is connected to the nozzle through the inkjet tube, and the first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge are respectively filled with cyan, yellow, magenta, and black inks.

[0011] Optionally, the yarn fixing mechanism includes a drying box body, on the wall of which a plurality of yarn guiding wheels, electric heating wires, and a blower are installed. The plurality of yarn guiding wheels guide and convey the dyed yarn, the electric heating wires generate heat by heating, and the blower blows the heat towards the dyed yarn to dry the dyed yarn.

[0012] Optionally, the cleaning mechanism includes a cleaning tank and a circulating filtration tank, which are connected by a conduit. A plurality of guiding rollers are provided inside the cleaning tank, and an ultrasonic generator and an ultrasonic transducer are provided at the bottom of the cleaning tank. A carbon filter and a particle filter are provided inside the circulating filtration tank, and the circulating filtration tank is connected to the cleaning tank through a conduit; the post-treatment mechanism includes a liquid storage tank, a lubricating liquid, and guiding wheels, and the plurality of guiding wheels are distributed inside the liquid storage tank and are all wetted by the lubricating liquid.

[0013] Optionally, the tension adjusting mechanism includes a guiding roller, a tension roller, a press roller adjusting component, a first press roller, a second press roller, and a tension sensor; the second press roller is connected to a servo motor, and the servo motor drives the second press roller; the press roller adjusting component adjusts the relative position between the second press roller and the first rubber roller to control the conveying speed of the raw yarn; the tension sensors are respectively installed at the inlet and outlet of the yarn coloring mechanism to monitor the tension of the raw yarn and the dyed yarn during the conveying process in real time.

[0014] Optionally, the knitting mechanism includes: a machine head and a needle bed, located in the middle of the weaving unit; the needle bed is correspondingly located below the machine head, and the needle bed includes a front needle bed and a rear needle bed, and the front needle bed and the rear needle bed are arranged in parallel at intervals in the third direction; the needle bed includes a needle bed body, a needle groove insert, knitting needles, sinkers and loop pushers. The knitting needles are installed in the needle grooves of the needle bed body. The sinkers are arranged between two knitting needles and reciprocate back and forth and move vertically up and down to control the formation and transfer of fabric loops. The loop pushers are fixed on the needle bed body and are used for the knitting needles to complete the loop doffing action; the cam block assembly of the machine head includes a butt cam, a presser cam and a yarn bending cam, and controls the rising, falling and pausing sequence of the knitting needles through the coordinated movement of the butt track, the presser track and the yarn bending track. At the same time, the sinker cam cooperates with the forward and backward movement of the sinkers to realize the knitting actions of forming loops, tucking and floating lines.

[0015] Optionally, the air filtering mechanism includes a suction component and an air outlet channel. The suction component sucks and filters impurities in the air, and the filtered air is discharged through the air outlet channel; the first driving mechanism includes an upper pressure roller and a plurality of lower rubber rollers. The upper pressure roller is connected to a motor, and the motor drives the upper pressure roller. The upper pressure roller and the plurality of lower rubber rollers are all rotationally matched to traction and convey the colored yarn.

[0016] In a second aspect, the present invention application provides a method for online dyeing and weaving of yarns, using any one of the yarn online dyeing and weaving devices described in the first aspect above, including:

[0017] Step S100, dyeing the primary color yarn to form a finished colored yarn;

[0018] Step S200, weaving the finished colored yarn to prepare a fabric.

[0019] Optionally, step S100 includes:

[0020] Step S101: Online coloring the primary color yarn to form a dyed yarn;

[0021] Step S102: Fixing the color of the dyed yarn;

[0022] Step S103: Cleaning the residual dyes and impurities on the dyed yarn after color fixing to form a colored yarn;

[0023] Step S104: Performing surface lubrication treatment on the colored yarn to obtain a finished colored yarn.

[0024] Optionally, step S101 includes: According to the pattern, texture and color of the fabric to be woven, the yarn coloring mechanism dyes the primary color yarn online;

[0025] And / or, step S102 includes: The blower of the yarn color fixing mechanism blows the heat generated by heating the heating wire towards the dyed yarn being conveyed in the yarn drying box to dry the dyed yarn;

[0026] And / or, step S103 includes: after fixation dyeing, the yarn passes through a cleaning tank, where an ultrasonic generator and an ultrasonic transducer are provided at the bottom of the cleaning tank. The ultrasonic generator generates ultrasonic waves, and the ultrasonic waves act on the cleaning liquid and the fixed dyeing yarn to remove the residual dyes and impurities on the yarn to form colored yarn.

[0027] In summary, the present invention application has the following beneficial technical effects:

[0028] (1) In the present invention application, the integrated fabric forming technology of on-line yarn dyeing and weaving is an innovative production process, which realizes the deep integration and innovation of the yarn dyeing process and the fabric weaving and forming process. The integrated fabric forming technology of on-line yarn dyeing and weaving not only streamlines the production process, but also effectively reduces the efficiency bottleneck and inventory risk in the traditional production mode of separating yarn dyeing and weaving. It cancels many intermediate time-consuming processes such as existing bobbin winding, rewinding, transportation, storage, etc., thus significantly improving the overall production efficiency and greatly reducing the production cost, which helps to promote the industrial upgrading and transformation of the textile industry.

[0029] (2) In the present invention application, the integrated fabric forming technology of on-line yarn dyeing and weaving can accurately meet the unique needs of consumers under the background of the increasingly personalized and diversified market demand, realizing the seamless connection between personalized design and customized production. This highly flexible production mode greatly meets the market's pursuit of unique and differentiated products, while improving the enterprise's rapid response ability to market changes and enhancing the market competitiveness.

[0030] (3) In the present invention application, by optimizing the dyeing process, the integrated fabric forming technology of on-line yarn dyeing and weaving can effectively reduce the amount of dye used and reduce the wastewater discharge, thus reducing the environmental pollution caused by the textile industry at the source. The promotion of the green production mode of on-line dyeing and weaving is of great significance for promoting the development of the textile industry towards the direction of low-carbon, environmental protection and sustainability, and makes contributions to realizing the global sustainable development goals. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of an on-line yarn dyeing and weaving device of the present invention application;

[0032] Figure 2 is a schematic structural diagram of the dyeing unit of the present invention application;

[0033] Figure 3 is a schematic structural diagram of the weaving unit of the present invention application;

[0034] Figure 4 is a schematic flow diagram of an on-line yarn dyeing and weaving method of the present invention application.

[0035] Reference Signs:

[0036] Dyeing unit - 1; Weaving unit - 2; Yarn guide tube - 11; Tension adjusting mechanism - 12; Guide roller - 121; Tension roller - 122; Press roller adjusting assembly - 123; First press roller - 124; Second press roller - 125; Tension sensor - 126; Color application mechanism - 13; First ink cartridge - 131; Micro hydraulic pump - 132; Solenoid valve - 133; Nozzle - 134; Air filtering mechanism - 14; Air suction assembly - 141; Air outlet duct - 142; Drying box - 151; Electric heating wire - 152; Blower - 153; Yarn guide wheel - 154; Cleaning tank - 161; Cleaning liquid - 162; Guide roller - 163; Ultrasonic transducer - 164; Ultrasonic generator - 165; Circulating filtration tank - 166; Carbon filter - 167; Particle filter - 168; Conduit - 169; Upper press roller - 171; Lower rubber roller - 172; Press roller position adjusting assembly - 173; Liquid storage tank - 181; Lubricating liquid - 182; Speed sensor - 19; Yarn feeding mechanism - 21; Yarn bobbin - 211; Upper yarn picking frame - 212; Single - cycle variable - speed yarn storage device - 213; Side yarn picking frame - 214; Yarn guide rail group - 215; Yarn guide - 216; Guide yarn reel - 217; Weaving mechanism - 22; Machine head - 221; Needle bed - 222; Second driving mechanism - 23; Control system - 24; Coiling mechanism - 25. Detailed implementation mode

[0037] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0038] Among them, the same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings of the specification of the present application, and the words "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from specific components. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the specification of the present application, the meaning of "a plurality" is two or more.

[0039] The one - line garment - making technology for yarns, as a major innovation in the textile industry, with its efficient and flexible production mode, has brought revolutionary changes to the manufacturing of clothing and home textile products. However, the one - line garment - making technology is not perfect in practical applications and still faces some challenges. On the one hand, the transportation and storage costs of colored yarns are high, and inventory backlogs are likely to occur. On the other hand, in traditional one - line garment - making technology, the dyeing process of yarns is often independent of weaving, which results in the inability to dye yarns in real - time and the difficulty in ensuring dyeing accuracy. Based on this, this invention application provides a yarn on - line dyeing and weaving system and its weaving method to partially or fully solve the technical problems existing in the prior art.

[0040] In a first aspect, a yarn on - line dyeing and weaving device includes: a dyeing unit 1 and a weaving unit 2. The output end of the dyeing unit 1 corresponds to the input end of the weaving unit 2. Along a second direction, the dyeing unit and the weaving unit are arranged at intervals;

[0041] The dyeing unit 1 includes a yarn guiding cylinder 11, a tension adjusting mechanism 12, a yarn coloring mechanism 13, an air filtering mechanism 14, a color - fixing mechanism, a cleaning mechanism, a post - finishing mechanism, and a first driving mechanism. The tension adjusting mechanism 12 is located at the left - most end of the dyeing unit 1. Along a first direction, the tension adjusting mechanism 12, the yarn coloring mechanism 13, and the air filtering mechanism 14 are arranged in sequence from left to right; along the second direction, the air filtering mechanism 14, the color - fixing mechanism, the cleaning mechanism, the post - finishing mechanism, and the driving mechanism are arranged in sequence from top to bottom. The raw - color yarn is led out from the yarn guiding cylinder 11 and enters the tension adjusting mechanism 12. After the tension of the raw - color yarn is adjusted by the tension adjusting mechanism 12, it enters the yarn coloring mechanism 13 for coloring to form a dyed yarn. The dyed yarn is fixed in color by the color - fixing mechanism, and the residual dyes and impurities are cleaned by the cleaning mechanism to form a colored yarn. Then, the surface of the colored yarn is lubricated by the post - finishing mechanism to form a finished colored yarn, and the finished colored yarn is introduced into the weaving unit;

[0042] The weaving unit 2 includes a frame, a yarn feeding mechanism, a weaving mechanism, a second driving mechanism, a control system, and a winding mechanism; the yarn feeding mechanism, the weaving mechanism, the driving mechanism, the control system, and the winding mechanism are all installed on the frame. Along the second direction, the yarn feeding mechanism, the weaving mechanism, and the winding mechanism are arranged in sequence from top to bottom. The finished colored yarn is fed into the weaving mechanism by the yarn feeding mechanism, and the weaving mechanism weaves the finished colored yarn into a fabric with a color pattern, and then the fabric with the color pattern is collected by the winding mechanism.

[0043] In some embodiments, the included angles between any two of the first direction, the second direction, and the third direction are all 90 degrees, that is, the first direction, the second direction, and the third direction are perpendicular to each other pairwise. The first direction can be the X - direction, the second direction can be the height direction, or the second direction can be the Z - direction, and the third direction can be the Y - direction.

[0044] In some embodiments, the raw materials of the primary color yarn can include natural fibers and / or chemical fibers; the natural fibers can include plant fibers such as cotton and linen; and / or, animal fibers such as wool, rabbit hair, camel hair, cashmere, and silk; and / or, mineral fibers such as silica, alumina, and magnesia; the chemical fibers can include man-made fibers such as viscose fiber, acetate fiber, and cuprammonium fiber; and / or, synthetic fibers such as polyester fiber, polyamide fiber, polyacrylonitrile fiber, polypropylene fiber, polyurethane fiber, aramid, polyetherimide fiber, and ultra-high molecular weight polyethylene fiber; the primary color yarn can be at least one of various organic or inorganic filament fibers or various organic or inorganic staple fibers. The diameter range of the filament fibers is 5D - 800D, and it can also be applicable to monofilament, multifilament, and ply yarns. The present invention application does not make special restrictions on this.

[0045] In some embodiments, the weaving unit 2 can be obtained by modifying a conventional computerized flat knitting machine. The overall dimensions of the weaving unit 2 are basically the same as those of the conventional computerized flat knitting machine. The dyeing unit 1 and the weaving unit 2 are arranged at intervals along the second direction, and the weaving unit 2 can be located below the dyeing unit 1; the range of the spacing distance between the dyeing unit 1 and the weaving unit 2 can be 30 cm - 60 cm.

[0046] In some embodiments, when the weaving unit 2 is working, the speed sensor 19 can detect the conveying speed of the finished colored yarn. After the tension adjusting mechanism 12 adjusts the tension of the primary color yarn, the dyeing speed of the primary color yarn can be adjusted to be synchronized with the knitting speed of the knitting mechanism. The tension adjusting mechanism 12, the knitting mechanism, the second driving mechanism, and the control mechanism cooperate together to obtain the finished colored yarn and weave the finished colored yarn into a fabric with a color pattern; or, the yarn feeding mechanism adjusts the dyeing speed of the colored yarn to be synchronized with the knitting speed of the knitting structure. The yarn feeding mechanism, the knitting mechanism, the second driving mechanism, and the control system cooperate together to obtain the finished colored yarn and weave the finished colored yarn into a fabric with a color pattern. On this basis, the coiling mechanism flattens and collects or folds and coils the fabric with a color pattern, realizing the on-line dyeing process of the primary color yarn led out from a conventional yarn bobbin and the knitting process of the finished colored yarn.

[0047] In some embodiments, when the dyeing unit 1 is working, the primary color yarn is colored by the yarn dyeing mechanism 13, the dye on the dyed yarn is fixed by the fixing mechanism, and the residual dye and impurities are cleaned by the cleaning mechanism to form a colored yarn. Then, the surface of the colored yarn is lubricated by the post-treatment mechanism to form a finished colored yarn. The finished colored yarn is introduced into the yarn feeding mechanism of the weaving unit, realizing the on-line rapid dyeing process of the yarn. The dyeing unit 1 and the weaving unit 2 of the yarn are independent of each other and can be installed in any knitting and weaving equipment according to actual needs.

[0048] In the application of the present invention, the on-line yarn dyeing and weaving device realizes the integration of the on-line dyeing of raw yarns and the finished product colored yarn weaving system. It has both the functions of on-line yarn dyeing and finished product colored yarn weaving. Through the design of yarn color regulation and manufacturing patterns, fabrics with rich color patterns can be woven integrally, effectively reducing the efficiency bottleneck and inventory risk in the traditional production mode of separating yarn dyeing and weaving. It cancels many intermediate time-consuming processes such as the existing bobbin winding, rewinding, transportation, and storage, greatly reducing the production cost of fabric weaving. At the same time, it realizes the seamless connection between personalized design and customized production, greatly meeting the market's pursuit of unique and differentiated products, improving the enterprise's rapid response ability to market changes, and enhancing the market competitiveness of textile enterprises.

[0049] Optionally, the tension adjusting mechanism 12 includes a guide roller 121, a tension roller 122, a pressure roller adjusting assembly 123, a first pressure roller 124, a second pressure roller 125, and a tension sensor 126; the second pressure roller 125 is connected to a servo motor, and the servo motor drives the second pressure roller 125; the pressure roller adjusting assembly 123 adjusts the relative position between the second pressure roller 125 and the first rubber roller 124 to control the conveying speed of the raw color yarn; the tension sensors 126 are respectively installed at the inlet and outlet of the yarn coloring mechanism 13 to real-time monitor the tension of the raw color yarn and the dyed yarn during the conveying process.

[0050] In some embodiments, the tension roller 122 can be used to tension the raw color yarn, and the pressure roller adjusting assembly 123 can adjust the up and down position of the second pressure roller 125 through a conventional position adjusting mechanism (such as a telescopic mechanism, a screw-nut mechanism, a wedge lifting mechanism, etc.), and then can adjust the relative position between the second pressure roller 125 and the first pressure roller 124, increasing or decreasing the pressure of the pressure roller on the raw color yarn, so as to control the conveying speed of the raw color yarn during the conveying process. The tension sensors 126 are respectively installed at the inlet and outlet of the yarn coloring mechanism 13 to real-time monitor the tension of the raw color yarn and the dyed yarn during the conveying process.

[0051] Optionally, the yarn coloring mechanism 13 includes a first yarn coloring component, a second yarn coloring component, a third yarn coloring component, and a fourth yarn coloring component. The first yarn coloring component includes a first ink cartridge 131, the second yarn coloring component includes a second ink cartridge, the third yarn coloring component includes a third ink cartridge, and the fourth yarn coloring component includes a fourth ink cartridge. The first yarn coloring component, the second yarn coloring component, the third yarn coloring component, and the fourth yarn coloring component also each include a micro hydraulic pump 132, a solenoid valve 133, an ink jet tube, and a nozzle 134. A micro hydraulic pump 132 is provided inside each of the first ink cartridge 131, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge. The micro hydraulic pump 132 is used to press out the ink. The micro hydraulic pump 132 is connected to the ink inlet of the solenoid valve 133, and the ink outlet of the solenoid valve 133 is connected to the nozzle 134 through the ink jet tube. The first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge are respectively filled with cyan, yellow, magenta, and black inks.

[0052] In some embodiments, the first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge can be respectively filled with cyan, yellow, magenta, and black inks. The first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge are arranged at intervals in sequence from left to right in the first direction. The micro hydraulic pump transports the ink to the nozzle through the ink jet tube for on-line yarn dyeing. The four nozzles can work independently, supporting single-color, two-color, or four-color synchronous spraying. Each nozzle 134 can adopt a 7×7 nozzle matrix (aperture 50μm), and high-density coverage of the raw yarn is achieved through staggered arrangement, avoiding missed dyeing of the raw yarn fibers.

[0053] In some embodiments, the dyeing unit 1 further includes a controller. Exemplarily, the controller can be a PLC. The controller has a Pantone or RAL standard color library built-in. The controller receives the target color number information of the dyed yarn, analyzes the target color number information to obtain different ratios of cyan (C), magenta (M), yellow (Y), and black (K). The ratio ranges of cyan (C), magenta (M), yellow (Y), and black (K) are all from 0% to 100%. 0% means no such color, and 100% means a fully saturated color. Different ratios of cyan (C), magenta (M), yellow (Y), and black (K) can generate a wide range of colors.

[0054] In some embodiments, the controller controls at least one of the nozzles of the first yarn coloring component, the nozzles of the second yarn coloring component, the nozzles of the third yarn coloring component, and the nozzles of the fourth yarn coloring component to spray according to the ratios of cyan (C), magenta (M), yellow (Y), and black (K), so as to dye the primary color yarn to form a dyed yarn. Exemplarily, when the controller receives the target color number information of the dyed yarn and the target color number information is orange, the controller can obtain the ratio of yellow (Y) and magenta (M) as Y: 60%, M: 40%. The controller controls the nozzles of the second yarn coloring component and the nozzles of the third yarn coloring component to spray, so as to dye the primary color yarn to form a dyed yarn.

[0055] In some embodiments, the opening and closing times of the solenoid valves 133 of the first yarn coloring component, the second yarn coloring component, and the third yarn coloring component are strictly matched with the yarn moving speed. For example, when the yarn travels at 100 m / min, the nozzles of the first yarn coloring component, the second yarn coloring component, and the third yarn coloring component can complete a single spray within 0.01 seconds, ensuring that the accuracy of the dyeing points of the primary color yarn reaches ±0.1 mm. The controller can also adjust the output pressure of the micro hydraulic pump 132, and the output pressure range can be 0.2 - 0.5 MPa to adapt to the viscosities of the inks of cyan, yellow, magenta, and black. High-frequency solenoid valves 133 can be used to eject micro-liter ink droplets (such as 5 - 20 pL / drop), and the total amount of ink sprayed each time can be controlled by pulse width modulation (PWM). After inkjetting, the dyed yarn immediately passes through the color fixing mechanism to prevent color blurring caused by ink diffusion.

[0056] Optionally, the air filtering mechanism 14 includes an air suction component 141 and an air outlet duct 142. The air suction component 141 sucks in impurities in the filtered air, and the filtered air is discharged through the air outlet duct 142.

[0057] In the present invention application, when the air filtering mechanism 14 operates, the air suction component 141 starts to generate negative pressure and sucks in the air containing impurities. The air undergoes multiple filtering processes in the air suction component 141, and the filtered and purified air is discharged through the air outlet duct 142. Through the process of one suction and one discharge, the air inside the dyeing unit 1 is effectively filtered and purified.

[0058] Optionally, the yarn color fixing mechanism includes a drying box body 151, and a plurality of yarn guiding wheels 154, electric heating wires 152, and blowers 153 are installed on the wall of the drying box body 151. The plurality of yarn guiding wheels 154 guide and convey the dyed yarn, the electric heating wires 152 generate heat by heating, and the blowers 153 blow the heat towards the dyed yarn to dry the dyed yarn.

[0059] In the application of the present invention, an electric heating wire 152 is provided in the yarn drying box body 151. A plurality of yarn guiding wheels 154 are fixedly connected to the inner wall of the yarn drying box body 151. Temperature sensors are respectively arranged on each yarn guiding wheel 154 to detect the temperature at various positions of the yarn drying box body and on the drying path of the dyed yarn. A partition is arranged in the yarn drying box body 151, so that the interior of the yarn drying box body is divided into conveying channels for a plurality of yarn paths, facilitating the drying of the dyed yarn. The blower 153 is fixedly penetrated below the yarn drying box body 151, so that the hot air heated by the electric heating wire 152 is blown by the blower 153 towards the conveying channels of a plurality of yarn paths to dry the dyed yarn, shortening the drying time of the dyed yarn.

[0060] Optionally, the cleaning mechanism includes a cleaning tank 161 and a circulating filtration tank 166. The cleaning tank 161 and the circulating filtration tank 166 are connected by a conduit. A plurality of guiding rollers 163 are arranged inside the cleaning tank 161. An ultrasonic generator 165 and an ultrasonic transducer 164 are arranged at the bottom of the cleaning tank 161. A carbon filter 167 and a particle filter 168 are arranged inside the circulating filtration tank 166. The circulating filtration tank 166 is connected to the cleaning tank 161 through a conduit.

[0061] In the application of the present invention, first, the inlet of the cleaning tank 161 is located below the dyed yarn outlet of the yarn drying box body 151. The plurality of guiding rollers 163 are three guiding rollers 163, and the three guiding rollers 163 include a left guiding roller, a middle guiding roller and a right guiding roller. Along the first direction, the height of the middle guiding roller is lower than the height of the left guiding roller and the height of the right guiding roller. In this way, the middle guiding roller can play the role of a tension roller to ensure stable guiding tension. The cleaning liquid 162 can be at least one of water and a reduction cleaning liquid. The plurality of guiding rollers 163 are all wetted by the cleaning liquid 162. An ultrasonic generator 165 and an ultrasonic transducer 164 are arranged at the bottom of the cleaning tank 161. The ultrasonic generator 165 generates ultrasonic waves, and uses the cavitation effect and acceleration action generated by the ultrasonic waves in the cleaning liquid 162 to directly and / or indirectly act on the cleaning liquid and the dyed yarn after fixing the color, removing the residual dyes and impurities on the yarn to form colored yarn; in addition, a carbon filter 167 and a particle filter 168 are arranged inside the circulating filtration tank 166. The circulating filtration tank 166 is connected to the cleaning tank 161 through a conduit 169. By removing the impurities in the cleaning liquid, the service life of the cleaning liquid is prolonged and the sewage discharge is reduced.

[0062] Optionally, the first driving mechanism includes an upper pressing roller 171 and a plurality of lower rubber rollers 172. The upper pressing roller 171 is connected to a motor, and the motor drives the upper pressing roller 171. The upper pressing roller 171 and the plurality of lower rubber rollers 172 are all rotationally matched to traction the colored yarn for moving and conveying.

[0063] In the application of the present invention, the rotational speed of the motor can be controlled, thereby controlling the rotational speed of the upper pressure roller 171, and further controlling the conveying speed of the colored yarn. The tension of the colored yarn during conveying can be controlled by adjusting the vertical position of the upper pressure roller 171 through the roller position adjustment assembly 173 (such as a conventional telescopic mechanism, a screw-nut mechanism, a wedge lifting mechanism, etc.). The two lower rubber rollers 172 are provided with matching bearings, and the two lower rubber rollers 172 and one upper pressure roller 171 are all rotationally matched to traction the colored yarn for moving conveyance.

[0064] Optionally, the post-treatment mechanism includes a liquid storage tank 181, a lubricating liquid 182, and guide wheels. A plurality of guide wheels are distributed inside the liquid storage tank 181, and all the plurality of guide wheels are wetted by the lubricating liquid 182.

[0065] In the application of the present invention, the lubricating liquid 182 can include one or more of vegetable-based oil, synthetic oil, silicone oil, and HDOPE wax emulsion, which can improve the quality of the colored yarn, reduce the phenomenon of broken yarn caused by friction during weaving, improve the weaving efficiency, and at the same time can improve the hand feeling and wearing comfort of the finished fabric. The colored yarn is tractioned to move through the post-treatment mechanism to form a finished colored yarn, and the finished colored yarn is then tractioned and output by a plurality of guide wheels and introduced into the weaving unit 2.

[0066] Optionally, the yarn feeding mechanism 21 is located above the weaving unit 2. The yarn feeding mechanism 21 includes a yarn bobbin 211, an upper yarn picking frame 212, a single-program variable-speed yarn storage device 213, a side yarn picking frame 214, a guide rail for the yarn guide 215, a yarn guide 216, and a guide grinding wheel 217. The single-program variable-speed yarn storage device 213 conveys the finished colored yarn to the knitting mechanism 22. The side yarn picking frame 214 is used to adjust the tension of the finished colored yarn. The yarn guide 216 slides on the guide rail for the yarn guide 215. The guide grinding wheel 217 is used to guide the finished colored yarn, and the yarn guide 216 is used to guide and convey the finished colored yarn.

[0067] In the application of the present invention, the side yarn picking frame 214 ensures that the finished colored yarn maintains an appropriate tightness during the knitting process. A plurality of guide rails for the yarn guide 215 can be provided. The yarn guide 216 slides on the guide rail for the yarn guide 215. The yarn guide 216 and the guide rail for the yarn guide 215 work together. Utilizing the precise guiding function of the rail, the yarn guide 216 can flexibly and accurately adjust its position. The yarn guide 216 is used to guide the finished colored yarn to ensure that the finished colored yarn can stably enter the knitting mechanism 22 along a predetermined path.

[0068] Optionally, the knitting mechanism 22 includes: a machine head 221 and a needle bed 222, which are located in the middle of the weaving unit 2; the needle bed 222 is correspondingly located below the machine head 221. The needle bed 222 includes a front needle bed and a rear needle bed, and the front needle bed and the rear needle bed are arranged parallel to each other at intervals in the third direction; the needle bed includes a needle bed body, a needle groove insert, knitting needles, sinkers, and loop pushers. The knitting needles are installed in the needle grooves of the needle bed body, and the sinkers are arranged between two knitting needles. The reciprocating swing in the front and rear directions and the vertical lifting motion control the formation and transfer of fabric loops. The loop pushers are fixed on the needle bed body and are used for the knitting needles to complete the loop doffing action; the cam block assembly of the machine head 221 includes a butt cam, a presser cam, and a yarn bending cam. Through the coordinated movement of the butt track, the presser track, and the yarn bending track, the rising, falling, and pausing sequences of the knitting needles are controlled. At the same time, the sinker cam cooperates with the forward and backward movement of the sinkers to realize the knitting actions of forming loops, tucking, and floating lines.

[0069] In the present invention application, first, the knitting mechanism is divided into two main parts: a machine head and a needle bed. The design that the front needle bed and the rear needle bed are arranged parallel to each other at intervals in the third direction provides flexibility for different types of knitting tasks, can adapt to the needs of various fabric patterns and structures, and is applicable to the production of various textiles, including but not limited to clothing, household items, and industrial textiles; in addition, by driving the cam blocks through the movement of the machine head, and then controlling the actions of the knitting needles and the sinkers, the need for manual intervention is greatly reduced, the production efficiency is improved, it is suitable for large-scale production environments, and the degree of production automation is increased.

[0070] In some embodiments, the second driving mechanism 23 includes: a motor and a transmission device. The transmission device transmits the power of the motor to the working components of the computerized flat knitting machine, such as the needle bed, the yarn feeding mechanism, and the take-up mechanism, etc. The transmission device can include conventional gear transmission methods, screw transmission methods, and cylinder driving methods, which belong to the conventional technologies in the field of existing mechanical transmission technologies.

[0071] In some embodiments, the control system 24 includes: an electric control box, a display, a microprocessor, and sensors, and can be responsible for monitoring and adjusting the entire weaving process. Specifically, under the joint cooperation of the control system and the second driving mechanism, the transmission device can drive the machine head to move horizontally. The horizontal movement can include the machine head moving left or right along the first direction. The transmission device can also drive the first needle bed and the second needle bed to move, and thus can realize the staggered arrangement within the range of 1 / 2 stitch pitch to 1 stitch pitch between the first needle bed and the second needle bed.

[0072] In some embodiments, the take-up mechanism 25 is located at the lower part of the weaving unit. The take-up mechanism 25 includes: a bottom plate drafting roller unit, a fabric take-up roller. The bottom plate drafting roller unit is located directly below the needle bed; the fabric is drafted by the bottom plate roller unit and then enters the take-up roller for flat laying and collection, which belong to the existing technologies in the field of existing textile manufacturing technologies.

[0073] In a second aspect, the present invention provides an on-line yarn dyeing and weaving method, which adopts any one of the on-line yarn dyeing and weaving devices described in the first aspect above, and includes:

[0074] It should be noted that the on-line yarn dyeing and weaving method of the present invention includes any one of the on-line yarn dyeing and weaving devices in the first aspect, and correspondingly also includes all the technical problems, technical solutions and technical effects recorded in any one of the on-line yarn dyeing and weaving devices in the first aspect. The present invention will not repeat them here.

[0075] The raw yarn is led out from the yarn guide tube 11 and enters the tension adjusting mechanism 12. After the tension adjusting mechanism 12 tensions the raw yarn, it enters the yarn coloring mechanism 13 for coloring. The yarn coloring mechanism 13 colors the raw yarn to form a dyed yarn. After the dye is fixed by the fixing mechanism and the residual dye and impurities are washed by the cleaning mechanism to form a colored yarn, the surface of the colored yarn is lubricated by the post-treatment mechanism to form a finished colored yarn, and the finished colored yarn is introduced into the weaving unit

[0076] Step S100: Dye the raw yarn to form a finished colored yarn;

[0077] Specifically, step S100 includes:

[0078] Step S101: On-line color the raw yarn to form a dyed yarn;

[0079] Specifically, step S101 includes: According to the pattern, texture and color of the fabric, the yarn coloring mechanism colors the raw yarn on-line. More specifically, it may include: By integrating four independent first yarn coloring components, second yarn coloring components, third yarn coloring components, and fourth yarn coloring components respectively loaded with cyan, yellow, magenta and black inks, combined with an injection system composed of a micro hydraulic pump, a high-frequency solenoid valve and a nozzle, the controller controls at least one of the nozzles of the first yarn coloring component, the second yarn coloring component, the third yarn coloring component, and the fourth yarn coloring component to inject according to the ratio of cyan (C), magenta (M), yellow (Y) and black (K) to dye the raw yarn to form a dyed yarn. Specifically, reference can be made to the technical content and technical effects recorded in the yarn coloring mechanism 13. It should be noted that for various knitting methods, the distance between the yarn dyeing point and the pattern forming color point is also different, and precise dyeing is achieved by changing the program parameters of the controller.

[0080] Step S102: Fix the dyed yarn;

[0081] Specifically, step S102 includes: the blower 153 of the yarn color fixation mechanism blows the heat generated by heating the heating wire 152 towards the dyed yarn being conveyed in the yarn drying box to dry the dyed yarn. For the specific technical content and technical effects recorded in the yarn color fixation mechanism, please refer to it.

[0082] Step S103: Clean the residual dyes and impurities on the dyed yarn after color fixation to form colored yarn.

[0083] Specifically, step S103 includes: the dyed yarn after color fixation passes through the cleaning tank. An ultrasonic generator 165 and an ultrasonic transducer 164 are provided at the bottom of the cleaning tank 161. The ultrasonic generator 165 generates ultrasonic waves. By using the cavitation effect and acceleration effect generated by the ultrasonic waves in the cleaning liquid 162, the cleaning liquid and the dyed yarn after color fixation are acted on to remove the residual dyes and impurities on the dyed yarn after color fixation to form colored yarn. For the specific technical content and technical effects recorded in the cleaning mechanism, please refer to it.

[0084] Step S104: Perform surface lubrication treatment on the colored yarn to obtain the finished colored yarn.

[0085] Specifically, step S104 includes: the colored yarn moves through the finishing mechanism to form the finished colored yarn. The finishing mechanism can perform surface lubrication treatment on the colored yarn, thereby improving the quality of the colored yarn and reducing the phenomenon of yarn breakage caused by friction during the weaving process. For the specific technical content and technical effects recorded in the finishing mechanism, please refer to it.

[0086] Step S200: Weave the finished colored yarn to prepare a fabric.

[0087] Specifically, step S200 includes: the finished colored yarn is fed into the knitting mechanism by the yarn feeding mechanism. The knitting mechanism weaves the finished colored yarn into a fabric with a color pattern, and then the coiling mechanism collects the fabric with the color pattern. More specifically, the finished colored yarn is fed into the knitting mechanism through the yarn feeding mechanism. The finished colored yarn is sent to the front needle bed and the rear needle bed through the yarn guide. Under the actions of the knitting needles on the front needle bed and the rear needle bed, the formation and transfer of loops of the finished yarn are completed to form a fabric with a color pattern.

[0088] In the present invention application, firstly, the integrated technology of online yarn dyeing and weaving fabric forming can accurately meet the unique needs of consumers under the background of the increasingly personalized and diversified market demand, realizing the seamless connection between personalized design and customized production. This highly flexible production mode greatly meets the market's pursuit of unique and differentiated products, while enhancing the enterprise's rapid response ability to market changes and strengthening its market competitiveness. Additionally, by optimizing the dyeing process, the integrated technology of online yarn dyeing and weaving fabric forming can effectively reduce the amount of dyes used and lower wastewater emissions, thus reducing the environmental pollution caused by the textile industry at the source. The promotion of the green production mode of online dyeing and weaving is of great significance for promoting the development of the textile industry towards a low-carbon, environmentally friendly, and sustainable direction, contributing to the achievement of global sustainable development goals.

[0089] As described above, although the present invention application has been shown and described with reference to specific preferred embodiments, it should not be construed as a limitation of the present invention application itself. Various changes in form and detail can be made without departing from the spirit and scope of the present invention application defined by the appended claims.

Claims

1. A yarn online dyeing and weaving device, comprising: A dyeing unit and a weaving unit, wherein the output end of the dyeing unit corresponds to the input end of the weaving unit, and the dyeing unit and the weaving unit are arranged alternately along the second direction; The dyeing unit includes a yarn guide cylinder, a tension adjustment mechanism, a yarn coloring mechanism, an air filtering mechanism, a color fixing mechanism, a cleaning mechanism, a finishing mechanism and a first driving mechanism. The tension adjustment mechanism is located at the leftmost end of the dyeing unit. Along the first direction, the tension adjustment mechanism, the yarn coloring mechanism and the air filtering mechanism are arranged from left to right in sequence; along the second direction, the air filtering mechanism, the color fixing mechanism, the cleaning mechanism, the finishing mechanism and the driving mechanism are arranged from top to bottom in sequence; the primary color yarn is led out from the yarn guide cylinder and enters the tension adjustment mechanism, the tension adjustment mechanism adjusts the tension of the primary color yarn and then enters the yarn coloring mechanism for coloring, the yarn coloring mechanism colors the primary color yarn to form a dyed yarn, the color fixing mechanism fixes the dye, the cleaning mechanism cleans the residual dye and impurities to form a colored yarn, and the finishing mechanism lubricates the surface of the colored yarn to form a finished colored yarn, and the finished colored yarn is introduced into the weaving unit; The weaving unit includes a frame, a yarn feeding mechanism, a weaving mechanism, a second driving mechanism, a control system and a winding mechanism; the yarn feeding mechanism, the weaving mechanism, the driving mechanism, the control system and the winding mechanism are all installed on the frame, and along the second direction, the yarn feeding mechanism, the weaving mechanism and the winding mechanism are arranged from top to bottom in sequence; the finished colored yarn is fed into the weaving mechanism by the yarn feeding mechanism, the weaving mechanism weaves the finished colored yarn into a fabric with a color pattern, and then the fabric with the color pattern is collected by the winding mechanism.

2. The yarn online dyeing and weaving device according to claim 1, characterized in that: The yarn coloring mechanism includes a first yarn coloring component, a second yarn coloring component, a third yarn coloring component, and a fourth yarn coloring component. The first yarn coloring component includes a first ink cartridge, the second yarn coloring component includes a second ink cartridge, the third yarn coloring component includes a third ink cartridge, and the fourth yarn coloring component includes a fourth ink cartridge. The first yarn coloring component, the second yarn coloring component, the third yarn coloring component, and the fourth yarn coloring component also include a micro hydraulic pump, an electromagnetic valve, an inkjet tube, and a nozzle. The first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge are each provided with a micro hydraulic pump inside, and the micro hydraulic pump is used to press out the ink; the micro hydraulic pump is connected to the ink inlet of the electromagnetic valve, and the ink outlet of the electromagnetic valve is connected to the nozzle through the inkjet tube. The first ink cartridge, the second ink cartridge, the third ink cartridge, and the fourth ink cartridge are respectively loaded with cyan, yellow, magenta, and black inks.

3. A yarn online dyeing and weaving device according to claim 2, characterized in that: The yarn fixing mechanism includes a drying box, on the wall of which are mounted a plurality of yarn guide wheels, electric heating wires and a blower. The plurality of yarn guide wheels guide and transport the dyed yarns, the electric heating wires heat the yarns to generate heat, and the blower blows the heat to the dyed yarns to dry the dyed yarns.

4. The yarn online dyeing and weaving device according to claim 3, characterized in that: The cleaning mechanism includes a cleaning tank and a circulating filter box, which are connected by a conduit. A plurality of guide rollers are arranged inside the cleaning tank. An ultrasonic generator and an ultrasonic transducer are arranged at the bottom of the cleaning tank. A carbon filter and a particle filter are arranged inside the circulating filter box, which are connected to the cleaning tank by a conduit. The finishing mechanism includes a liquid tank, a lubricating liquid and a guide wheel. A plurality of guide wheels are distributed inside the liquid tank, and the plurality of guide wheels are all soaked in the lubricating liquid.

5. The yarn online dyeing and weaving device according to claim 4, characterized in that: The tension adjustment mechanism includes a guide roller, a tension roller, a pressure roller adjustment assembly, a first pressure roller, a second pressure roller and a tension sensor; the second pressure roller is connected to a servo motor, and the servo motor drives the second pressure roller; the pressure roller adjustment assembly adjusts the relative position between the second pressure roller and the first rubber roller to control the conveying speed of the primary color yarn; the tension sensors are respectively installed at the entrance and exit of the yarn coloring mechanism to monitor the tension of the primary color yarn and the dyed yarn in real time during the transmission process.

6. The yarn online dyeing and weaving device according to claim 5, characterized in that: The weaving mechanism includes: a machine head and a needle bed, which are located in the middle of the weaving unit; the needle bed is correspondingly located below the machine head, and the needle bed includes a front needle bed and a rear needle bed, and the front needle bed and the rear needle bed are arranged in parallel with each other in the third direction; the needle bed includes a needle bed body, a needle groove inlay, a knitting needle, a sinker and a knock-off plate, the knitting needle is installed in the needle groove of the needle bed body, and the sinker is arranged between the two knitting needles. The back and forth reciprocating swing and vertical lifting movement control the formation and transfer of the fabric coils, and the knock-off plate is fixed on the needle bed body, and is used for the knitting needle to complete the knock-off action; the triangle block assembly of the machine head includes a needle lifting triangle, a needle pressing triangle, and a yarn bending triangle, and the rise, fall, and pause timing of the knitting needle are controlled by the coordinated movement of the needle lifting track, the needle pressing track, and the yarn bending track. At the same time, the sinker triangle cooperates with the sinker to advance and retreat to realize the knitting actions of looping, gathering, and floating line.

7. The yarn online dyeing and weaving device according to claim 6, characterized in that: The air filtering mechanism includes an air suction component and an air outlet channel. The air suction component sucks impurities in the filtered air, and the filtered air is discharged through the air outlet channel. The first driving mechanism includes an upper pressure roller and multiple lower rubber rollers. The upper pressure roller is connected to the motor, and the motor drives the upper pressure roller. The upper pressure roller and the multiple lower rubber rollers all rotate and cooperate to pull the colored yarn for moving transportation.

8. A yarn online dyeing and weaving method, which adopts a yarn online dyeing and weaving device as described in any one of claims 1 to 7, characterized in that: include: Step S100, dyeing the primary color yarn to form finished colored yarn; Step S200, weaving the finished colored yarn to prepare a fabric.

9. A yarn online dyeing and weaving method according to claim 8, characterized in that: Step S100 includes: Step S101: primary color yarn is colored online to form dyed yarn; Step S102: performing a color fixing treatment on the dyed yarn; Step S103: cleaning the dyed yarn after fixation to remove residual dye and impurities to form a colored yarn; Step S104: performing surface lubrication treatment on the colored yarn to obtain the finished colored yarn.

10. A yarn online dyeing and weaving method according to claim 9, characterized in that: Step S101 includes: the yarn dyeing mechanism dyes the primary color yarn online according to the weaving pattern, structure and color of the fabric; And / or, step S102 includes: a blower of the yarn fixing mechanism blows heat generated by heating the electric heating wire toward the dyed yarn being transported in the yarn drying box to dry the dyed yarn; And / or, step S103 includes: the dyed yarn after color fixation passes through a cleaning tank, an ultrasonic generator and an ultrasonic transducer are provided at the bottom of the cleaning tank, the ultrasonic generator generates ultrasonic waves, and the ultrasonic waves are used to act on the cleaning liquid and the dyed yarn after color fixation to remove residual dyes and impurities on the yarn to form colored yarn.

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