CN114753032B - Modal, velvet acrylic fiber, graphene fiber compact siro spinning process - Google Patents

Abstract

The invention discloses a compact siro spinning process of modal, develvet acrylic fiber and graphene fiber. The spinning process adopts the siro compact spinning process. It is characterized in that the prepared blended yarn comprises 48-52% by weight Lenzing Modal, 28-32% velvet acrylic fiber, and the rest are graphene fibers; specifically include raw material preparation, cotton opening and cleaning, carding, drawing, roving, spinning, and winding processes. In the present invention, three kinds of fibers with different properties are blended by compact siro spinning, so that the advantages of different fibers are complementary, and it has the advantages of high single yarn strength, uniformity, compact structure, good wear resistance, less hairiness, smooth yarn, etc. . The yarn not only has the advantages of develvet acrylic fiber for warmth, modal fiber for moisture absorption and comfort, but also has the unique far-infrared, antibacterial and antibacterial, anti-ultraviolet characteristics of graphene functional fiber. The yarn has good functionality.

Description

Modal, velvet acrylic fiber, graphene fiber compact siro spinning process

technical field

The invention relates to the technical field of spinning, in particular to the compact twin spinning process of modal, develvet acrylic fiber and graphene fiber.

Background technique

As a traditional cotton textile industry, actively discussing green, environmental protection, and technological emerging textiles is the only way for textile enterprises to internally adjust their structure and transfer methods to realize the dream of a textile power. Vigorously promote differentiated fibers and functional fibers, and diversify spinning varieties to meet the ever-changing development of human science and technology, and meet the needs of colorful and fashionable life clothing. It is an inevitable choice to improve the market competitiveness of cotton textile enterprises.

The modal fiber produced by Lenzing is made from natural wood, which can be degraded naturally after use and is naturally environmentally friendly. The fiber is soft, smooth and bright, the color is bright, the fabric feels particularly smooth, the surface of the fabric is bright and shiny, the drapability is good, it can produce silk-like luster and feel, strong moisture absorption capacity, and comfortable to wear. It is an ideal personal fabric and health care clothing product, which is beneficial to the biological microcirculation and health of the human body.

Graphene is currently the thinnest, hardest, and most conductive nano-material found in the world. Since it was formally prepared in the laboratory of the University of Manchester in the UK in 2004, it has attracted worldwide attention and is known as the "king of new materials". Graphene fibers can be divided into graphene-modified fibers with viscose, nylon, spandex, polyester and other fibers as carriers. Biomass graphene is a new material developed from corn cob cellulose using viscose as a carrier and using aerospace technology, which is the first in the world. Biomass graphene modified fiber has unique functions such as far infrared excitable by the human body, antibacterial and antibacterial, prevents mites, anti-static, anti-ultraviolet, moisture absorption and quick drying, regulates human microcirculation, and promotes deep sleep. It can be used in medical supplies , sportswear, down jackets, sleeping bags, quilts, mattresses, pillows, pillow cores, shawls and other high-end textiles.

Derong is a new type of polyacrylonitrile fiber produced by German Dralon company through dry spinning technology. It integrates ultra-fine, special-shaped, low-carbon and environmental protection, and is unique in the current acrylic fiber market. Derong fiber has a unique double T-shaped (dog-bone) cross-section, soft and fluffy texture, good warmth retention, soft luster, and a wicking effect.

Although modal fiber has good air permeability and water absorption, and has the softness of cotton, the luster of silk, and the smoothness of hemp, it is very easy to deform, and not only the cost is higher than ordinary cotton, but also the wear resistance is relatively high. Difference. Graphene fiber is a colored fiber, and it is very easy to cause mixed fiber phenomenon during the spinning process, forming black spots in the finished fabric. The dry breaking strength, dry breaking elongation, volume specific resistance, moisture regain, color difference, whiteness, and light perception of modal fiber, develvet acrylic fiber, and graphene fiber are very different, resulting in poor quality of the formed yarn, so the market There is a lack of yarn blended with three raw materials. In addition, in the prior art, spinning produces a large amount of waste, and there is no automatic and sufficient recycling method, so the waste is relatively large.

Contents of the invention

The purpose of the present invention is to address the shortcomings of the prior art by blending three fibers with different performances so that the characteristics of different fibers complement each other. It not only has the advantages of develvet acrylic fiber to keep warm, modal fiber for moisture absorption and comfort, but also has the unique characteristics of far infrared, antibacterial and antibacterial, and anti-ultraviolet radiation of graphene functional fiber. The yarn has good functionality.

The technical scheme adopted in the present invention is as follows.

Modal, develvet acrylic fiber, graphene fiber compact siro spinning process, the spinning process adopts siro compact spinning process, it is characterized in that the blended yarn made includes 48-52% Lenzing modal, 28-32% develvet acrylic fiber, the rest is graphene fiber; the number of blended yarn is 11.8tex; specifically includes the following steps.

Step 1: Raw material preparation step in the production process

Before opening and cleaning cotton, first pack the three raw materials of modal fiber, develvet acrylic fiber, and graphene fiber, cut off the packing tape in the pre-loosening room, and place it for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; The temperature is controlled at 28°C-32°C, and the relative humidity in the workshop is controlled at 58%-62%; the modal fiber raw material is treated with moisture to make its moisture regain reach 12.41%.

Step 2: Opening and cleaning steps in the production process:

Set up a number of circularly arranged cotton mixing discs, divide the modal fiber and graphene fiber into several parts, put each part into a cotton mixing disc, grab the raw materials through the first cotton grabbing machine, and carry out the process through the first cotton mixing opener. Opening, mixing, and impurity removal; when the first grabbing machine grabs raw materials, each time it grabs a layer of raw materials from each mixing disc ring in order to achieve the purpose of mixing evenly.

Opening, carding, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine, so as to obtain the first cotton lap; the primary cotton lap Divide it into several parts, put each row of cotton rolls into a cotton mixing disc, and then pass the first grabbing machine to grab the raw materials circularly along each mixing disc on the horizontal plane, and then go through the first mixing and opening successively for opening, Mixing and removing impurities, opening, carding, and removing impurities through the first cotton opener, uniformly conveying the cotton layer through the first cotton feeder, and uniformly mixing and forming rolls through the first lap forming, so as to obtain the second cotton lap; The second lap quality indicators are: lap length 27m, lap wet weight 405g/m, elongation 2.63%, meter weight unevenness 1.0%.

Put the derong acrylic fiber into the second catching machine, grab and mix it through the second catching machine and multi-compartment blending machine, open, card and remove impurities through the second cotton opener, and pass through the second cotton feeding machine. Cotton layer is evenly transported by the machine, and rolled by the second lapping machine to obtain the third cotton lap; the lapping roller of the second lapping machine is provided with a heating rod, and the heating temperature of the lapping roller is 70-80 degrees Celsius ; When the second lapping machine is rolled, the German velvet acrylic fiber roving is used for isolation; the third lap quality index is: lap length 27m, lap wet weight 403/m, elongation 1.44%, meter weight The average rate is 0.9%.

Step 3: Carding process steps in the production process:

Put the second cotton roll into the first carding machine for carding to obtain graphene modal raw slivers; the cylinder speed is slightly higher to reduce the load on the needle surface and strengthen carding, and the speed is set to 330r/min; the licker-in speed is appropriately reduced , which is conducive to fiber transfer, set the licker-in speed to 780r/min; because the raw material contains less impurities, the cover plate speed is controlled at 88.4mm/min; in order to improve the quality of the cotton web, reduce the doffer speed to 22r/min; in order to make the fiber Fully combed, the five-point spacing between the cylinder and the movable cover is set to 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; the graphene modal raw strips are 18.8g-19g/5m in weight, and the knot is 4 grains/g , The grade of the cotton net is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of the cotton net and the straightness of the fiber, prevent black stars and harmful yarn defects formed by graphene blended yarns, and configure suitable card clothing models, cover needles The cloth model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on the first carding machine one by one, and focus on checking the doffer and licker-in roller For the part, control A1 defects within 100 pieces/100,000 m; keep the machine clean, and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of each part unblocked, without scratches. In order not to affect the quality of the cotton net; the cotton net cleaner must be cleaned by the operator at any time. Once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of sliver.

Put the third lap into the second carding machine for carding to obtain velvet acrylic raw slivers; a slightly higher cylinder speed can reduce the load on the needle surface and enhance carding, and the speed is set to 330r/min; the licker-in speed is appropriate Decrease, which is beneficial to fiber transfer, set the licker-in speed to 850r/min; reduce the cover plate speed to 88.4mm/min because the raw material contains less impurities; the doffer speed is slightly lower, which is beneficial to improve the quality of the cotton web, and is set to 22r/min .; In order to fully comb the fibers, the five-point spacing between the cylinder and the movable cover is 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; 4 grains/g, the grade of cotton web is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of cotton web and fiber straightness, prevent harmful yarn defects formed by graphene blended yarns, and configure suitable card clothing models, cover The plate card clothing model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on each carding machine, and focus on checking the doffers and licker-in rollers For the part, control A1 defects within 100 pieces/100,000 m; keep the machine clean, and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of each part unblocked, without scratches. In order not to affect the quality of the cotton net; the cotton net cleaner must be cleaned by the operator at any time. Once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of sliver.

Step 4: Pre-merging step in the production process

In order to further reduce the unevenness of raw sliver weight, fully mix graphene modal and develvet acrylic fibers and make the blending ratio accurate, before drawing and mixing, first put graphene modal green sliver in the pre-drawing machine for pre-drawing. And process to get pre-drawing; pre-merging root number is 6, pre-drawing wet weight 18.4g/5m, post-drawing multiple 1.82, roller gauge 11*10*20mm, strip speed 170m/min; pre-drawing After the generated waste strips are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips, which are sent to the cotton mixing disc.

Step 5: Drawing frame steps in the production process:

Combine the pre-drawing with the raw sliver of develvet acrylic fiber in one, two and three ways to obtain a three-way mixed sliver.

Use 5 pre-drawing frames and 2 raw slivers of de velvet acrylic fiber to obtain a mixed sliver. The wet weight of the mixed sliver is 17.0g/5m, the post-drawing ratio is 1.86, the roller gauge is 11*10*20mm, and the output The sliver speed is 182m/min; due to the different characteristics of the fibers in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when the sliver is fed together, the position of each sliver is fixed to ensure that the cloth The surface is uniform in style.

The number of two-merging and one-merging strips is 6, the wet weight of the two-merging strips is 16.3g/5m, the post-drawing ratio is 1.59, the roller gauge is 11*10*20mm, and the strip delivery speed is 185m/min.

The number of three-merging and two-merging strips is 6. In order to prevent and control the generation of yarn black stars, the three-merger appropriately reduces the process speed, and the strip speed is 180m/min; the wet weight of the three-merger strips is 16.0g/5m, Back draft ratio 1.59, roller gauge 11*10*20mm.

During the drawing process, remove the cotton wax in the yarn channel in time, keep the fiber in a straight state during the drafting process, reduce the phenomenon of fiber hooking, and keep the fiber straight and smooth; strengthen the operation and management, and do a good job of protection. High strips and messy strips are not allowed; keep the protective cover on to prevent flying flowers from attaching and prevent adhesion with other semi-finished products to cause fiber mixing.

Step 6: Roving process steps in the production process:

The three-parallel mixed sliver is processed into roving in the roving process; the roving process adopts the technological principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-draft; since the spun yarn is a Siro compact spinning variety, the roving quantitative Under the premise of meeting the drafting requirements of the spun yarn, it is designed according to the maximum; the graphene fiber is a black fiber, and the isolation and protection work is done to prevent the collision of the semi-finished product and the floating of the fiber, resulting in the phenomenon of fiber mixing; the graphene blended yarn machine and adjacent types of machines In between, use high-density nylon nets to do a good job of strict isolation and protection; transport roving vehicles and storage roving containers, so that they are dedicated to special vehicles, and strictly prevent them from being mixed with other types of vehicle containers; the parameters of the roving process are: post-draft multiple 1.18, twist coefficient 80.1, roller gauge 27*39mm, spindle speed 750r/min.

Step 7: Spinning process steps in the production process:

In the spinning process, after the two rovings are drafted at the same time, they are combined into one siro yarn; strengthen the management of the siro compact spinning accumulation area, and keep the two yarns in the accumulation area clear and stable; for four-roller compact spinning, the small roller diameter The selection is very important. The diameter of the small roller is Ф18.7mm, which solves the problem of unsmooth drafting of the strands; in case of doffing or temporary parking, the negative pressure fan must be turned off, otherwise the suction groove of the special-shaped tube will accumulate a lot of dust and stick to it. The strands in the accumulation area will produce knotted soot defect yarns in the whole machine. The longer the parking time, the more obvious the soot defect yarns will be; use the DW-1 spinning spindle position scanner and special bobbins with built-in chips to regularly check the quality and alarm Outdated spindles, and timely quality tracking and rectification, eliminate outdated spindles, reduce cvb quality differences between spindles, and maintain stable and consistent yarn quality; increase auxiliary light sources, increase illuminance, detect broken ends in time and carry out docking;

Spinning process parameters are: total draft ratio 61-63, rear draft ratio 1.18-1.20, twist coefficient 361-363, roller gauge 20*50mm, front roller speed 145-155r/min, gauge 2.1-2.3mm ;

The waste cotton produced in drawing frame, roving and spinning process is collected, combined to form the first waste strip, and the first waste strip is torn off to form the first broken strip, which is sent to the second cotton grasping machine for recycling.

Step 8: Winding process steps in the production process:

In order to prevent the occurrence of black stars in graphene blended yarns, the winding speed is set at 1100-1150m/min; the electric clearer FD foreign fiber clearing limit process parameters are turned off; since the electronic yarn clearer intelligently identifies the yarn body, and the removal of yarn defects is On the basis of the average value of the base yarn, the yarn clearing benchmark is converted by percentage, so the grouping of production varieties should not be less than 10 spindles.

As an optimal technical solution, the specification of the modal fiber is 1.30dtex×39mm, the dry breaking strength is 3.5cN/dtex, the dry breaking elongation is 14%, the volume specific resistance is 3.3*10 ⁷ Ω·cm, and the moisture regain is 10.52%;

The specification of the develvet acrylic fiber is 1.3dtex×40mm, glossy, the dry breaking strength is 2.6cN/dtex, the dry breaking elongation is 27%, the volume specific resistance is 1.55*10 ⁶ Ω·cm, and the moisture regain is 2.10%;

The graphene fiber has a specification of 1.33dtex×38mm, black color, dry breaking strength of 2.5cN/dtex, dry breaking elongation of 20.4%, whiteness of 4.5%, volume specific resistance of 5.58*10 ⁷ Ω·cm, and moisture regain of 12.41%.

As an optimal technical solution, the traveler in the spinning process has a large resistance during operation, and the corresponding ring traveler is configured; PG14054GC high-precision bearing steel is used to polish the chrome-plated steel ring, and the Swiss Bräcker C1ELudr10/0 traveler; in the spinning process , using a double pressure rod on the pin.

As an optimal technical solution, the first cotton opener is FA002A automatic cotton opener, the first mixed opener is A035D mixed opener, the first cotton opener is FA106 cotton opener, and the first cotton feeder is A092 type cotton feeding machine, the first lapping machine is A076A type lapping machine, and the pre-drawing frame is FA302 type drawing frame.

As an optimal technical solution, in the winding process, the QPRO60 Murata automatic winding machine is used, equipped with the USTER QUANTUM3 electronic yarn clearer;

The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, PF cycle number is 30, U is 60 %.

As a preferred technical solution, the second plucking machine is the FA002A automatic plucking machine, the multi-bin cotton blending machine is the FA022 multi-bin cotton blending machine, the second cotton opener is the FA106A cotton opener, and the second cotton feeder is A092A type cotton feeding machine, the second lapping machine is A076A type lapping machine, the second carding machine is A186G carding machine; the combined drawing frame is completed in the FA320A-G40 drawing frame, the second and third And all finished in a FA302 type three drawing frame, the roving frame is BHFA497 type roving frame; the spinning frame is FA506 type spinning frame;

In order to prevent problems such as unsmooth drafting of sliver, lumpy yarn, knuckle-like soot and large difference in cvb between spindles in the spun yarn spinning process, strengthen the control of compact spinning and drafting parts to strictly prevent the occurrence of lumpy yarn defects;

The enhanced control of compact spinning and drafting parts is to check whether the bell mouth is out of position, whether the pressure of the cradle is too small, whether the screws of the cradle are loose, whether the negative pressure pipe joint is falling off and leaking air, whether the suction groove of the special-shaped pipe cover plate is Hanging and clogging, whether the tension hook part is entangled, whether the grid ring is damaged, and whether the transmission gear has accumulated and missing teeth.

As a preferred technical solution, the waste cotton generated in the drawing, roving, and spun processes is combined by the first waste drawing and tearing device to form the first waste strip and torn to form the first broken strip.

As a preferred technical solution, the first scrap drawing frame tearing device is a scrap drawing frame machine for removing the frontmost top roller of the four drawing strip top rollers.

As a preferred technical solution, the length of the first broken strip is 260-300mm.

As a preferred technical solution, through the second waste drawing and tearing device, the waste cotton produced in the pre-drawing is combined to form the second waste strip and torn to form the second broken strip; the second waste drawing and tearing device is to remove four Second scrap draw frame for the frontmost top roll of the first draw frame top roll.

The beneficial effects of the present invention are as follows.

1. The price of biomass graphene fiber is 280,000 yuan per ton, and the price of Lenzing Modal and dralon acrylic fiber is 18% higher than the price of raw materials of the same grade. In this project, through the blending of three different performance fibers, the characteristics of different fibers can complement each other. It not only has the advantages of develvet acrylic fiber to keep warm, modal fiber for moisture absorption and comfort, but also has the unique characteristics of far infrared, antibacterial and antibacterial, and anti-ultraviolet radiation of graphene functional fiber. The yarn has good functionality.

2. The compact siro spinning of the present invention is a novel spinning technology for spinning on an improved ring spinning frame. Combining the advantages of compact spinning and siro spinning, in the spinning process, two rovings are drafted at the same time, and then merged into a siro yarn. Compact twin yarn has the advantages of high single yarn strength, uniform evenness, compact structure, good wear resistance, less hairiness, and smooth yarn. It not only has the style characteristics of ply yarn, but also has the property of single yarn. The indicators of compact siro spinning are significantly improved compared with ordinary ring spun yarn. The use of compact siro-spun yarns has clear texture, good luster, wear resistance, and is not easy to pilling, which is unmatched by any other spinning process at present.

3. The lapping roller of the second lapping machine is equipped with a heating rod. The raw material of acrylic fiber is relatively fluffy. In order to prevent lap sticking and facilitate the feeding and unwinding of the laps in the carding process, the same type of roving is used for lapping. Isolation, and at the same time, the lap roller is heated with a heating rod, so that the density of the lap is increased and the shape is good.

4. In the cleaning process, the three raw materials of graphene, modal, and velvet acrylic fiber are packaged, and the packing tape is cut off in the loosening room to balance and adapt to the temperature and humidity environment in the workshop. Since the moisture regain of the Lenzing Modal fiber raw material is relatively small, in order to prevent the modal fiber from being brittle and damaged during the processing, it needs to be wetted to make it close to the official moisture regain requirement of 13%. When graphene and modal raw materials are placed on the cotton table, they should be placed strictly according to the upper bale diagram. The bales are evenly arranged and the density is consistent. In order to ensure that the graphene and modal raw materials are fully mixed, a second roll is carried out in the cleaning process. In the carding process, carding is the main method, so that the fibers are singled out and the damage of the fibers is minimized. In order to improve the clarity of the cotton web and the straightness of the fiber, prevent the black star harmful yarn defect formed by the graphene blended yarn. According to the raw material specifications, configure the appropriate card clothing model. In order to further reduce the weight unevenness of the green sliver, fully mix the graphene modal and acrylic fibers and promote the accurate blending ratio, the graphene modal green sliver is pre-processed before drawing and mixing. Due to the different fiber properties in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when a mixed sliver is fed, each sliver is fixed in position to ensure a uniform fabric style. In order to prevent and control the generation of yarn black stars, the process speed should be appropriately reduced, and the cotton wax in the yarn channel should be removed in time to keep the fibers in a straight state during the drafting process, reduce the phenomenon of fiber hooks, and keep the fibers straight and smooth. Strengthen the operation and management of operation, do a good job in the protection of semi-finished products, and do not allow high strips and messy strips. Keep the reserve strip covered with a protective cover to prevent flying flowers from adhering and preventing adhesion with other semi-finished products to cause fiber mixing. The roving process adopts the technical principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-drawing. Since the spun yarn is a siro compact spinning variety, the roving weight is designed according to the maximum under the premise of meeting the drafting requirements of the spun yarn. By doing a good job of isolation and protection, the graphene fiber is a black fiber, which avoids the phenomenon of mixed fibers caused by the collision of semi-finished products and the floating of fibers.

Key spinning equipment such as card clothing, cots, rubber rings, steel rings, and travellers have been optimized to improve the spinning performance of differentiated yarns. By reasonably controlling the speed of the machine, the spinning equipment has been optimized to meet production requirements.

5. Using the complementary characteristics of three different fibers, it not only has the advantages of develvet acrylic fiber for warmth, modal fiber for moisture absorption and comfort, but also has graphene functional fiber, and the yarn has good efficacy. After brushed surface treatment, single-dyeing, double-dyeing, over-dyeing, dyeing and finishing processes, the cloth surface has a unique style and colorful colors. It is welcomed by customers and has broad market prospects. Biomass graphene blended yarn is not only a functional fiber yarn, but also a color spun yarn, which can reduce the dyeing process in post-processing, reduce pollution, and is conducive to environmental protection.

6. The waste cotton produced in drawing frame, roving, and spinning process is collected and combined to form the first waste strip, which is torn off to form the first broken strip, which is then sent to the second cotton grabbing machine for recycling. The waste strips are comprehensively utilized (accounting for about 4-5% of the total amount of raw materials). At the same time, after the waste strips generated in the pre-merger are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips , into the cotton mixing disc. The uniform rate of raw material mixing is increased, the difference of various properties is reduced, and the yarn quality of the final product is optimized.

Detailed ways

Below, the present invention will be further described in conjunction with examples.

Example 1. Modal, develvet acrylic fiber, graphene fiber compact siro spinning process, the spinning process adopts siro compact spinning process, characterized in that the blended yarn made includes 48% Lenzing Modal, 32% Develvet acrylic fiber, 20% graphene fiber; blended yarn number is 11.8tex; specifically includes the following steps.

Step 1: Raw material preparation step in the production process

Before opening and cleaning cotton, first pack the three raw materials of modal fiber, develvet acrylic fiber, and graphene fiber, cut off the packing tape in the pre-loosening room, and place it for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; The temperature is controlled at 28°C-32°C, and the relative humidity in the workshop is controlled at 58%-62%; the modal fiber raw material is treated with moisture to make its moisture regain reach 12.41%.

Step 2: Opening and cleaning steps in the production process:

Set up a number of circular arrays of cotton mixing discs, divide the modal fiber and graphene fiber into several parts, put each row into a cotton mixing disc, grab the raw materials through the first cotton grabber, and pass through the first mixed cotton opener Carry out opening, mixing, and impurity removal; when the first grabbing machine grabs raw materials, it grabs a layer of raw materials from each mixing disc ring in order to achieve the purpose of mixing evenly.

Opening, carding, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine, so as to obtain the first cotton lap; the primary cotton lap Divide it into several parts, put each row of cotton rolls into a cotton mixing disc, and then pass the first cotton grabbing machine to grab the raw materials circularly along each mixing disc on the horizontal plane, and then go through the first mixing opener in turn. Loosening, mixing, and impurity removal, opening, carding, and impurity removal through the first cotton opener, uniformly conveying the cotton layer through the first cotton feeder, and uniformly mixing into rolls through the first roll forming, so as to obtain the second cotton rolls; the second lap quality indicators are: lap length 27m, lap wet weight 405g/m, elongation 2.63%, meter weight unevenness 1.0%.

Put the derong acrylic fiber into the second catching machine, grab and mix it through the second catching machine and multi-compartment blending machine, open, card and remove impurities through the second cotton opener, and pass through the second cotton feeding machine. Cotton layer is evenly transported by the machine, and rolled by the second lapping machine to obtain the third cotton lap; the lapping roller of the second lapping machine is provided with a heating rod, and the heating temperature of the lapping roller is 70-80 degrees Celsius ; When the second lapping machine is rolled, the German velvet acrylic fiber roving is used for isolation; the third lap quality index is: lap length 27m, lap wet weight 403/m, elongation 1.44%, meter weight The average rate is 0.9%.

Step 3: Carding process steps in the production process:

Put the second cotton roll into the first carding machine for carding to obtain graphene modal raw slivers; the cylinder speed is slightly higher to reduce the load on the needle surface and strengthen carding, and the speed is set to 330r/min; the licker-in speed is appropriately reduced , which is conducive to fiber transfer, set the licker-in speed to 780r/min; because the raw material contains less impurities, the cover plate speed is controlled at 88.4mm/min; in order to improve the quality of the cotton web, reduce the doffer speed to 22r/min; in order to make the fiber Fully carded, the five-point spacing between the cylinder and the movable cover is set to 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; The net grade is first class, and the weight unevenness rate is less than 3.5%. It improves the clarity and fiber straightness of the cotton net, and prevents black stars and harmful yarn defects formed by graphene blended yarns. It is equipped with suitable card clothing models and flat card clothing models. TPT-52 is adopted, the model of doffer card clothing is AD4030×01870, and the model of cylinder card clothing is AC2030-01740; the defect of A1 is strictly controlled, and the follow-up test is carried out on the first carding machine one by one, focusing on the inspection of doffer and licker-in rollers, Control the A1 defect within 100 pieces/100,000 m; keep the machine clean and strictly prevent the defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of all parts unblocked and free from scratches to avoid affecting Cotton web quality: The cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of neps will be generated in the cotton web, which will seriously endanger the quality of raw sliver.

Put the third lap into the second carding machine for carding to obtain velvet acrylic raw slivers; a slightly higher cylinder speed can reduce the load on the needle surface and enhance carding, and the speed is set to 330r/min; the licker-in speed is appropriate Decrease, which is beneficial to fiber transfer, set the licker-in speed to 850r/min; reduce the cover plate speed to 88.4mm/min because the raw material contains less impurities; the doffer speed is slightly lower, which is beneficial to improve the quality of the cotton web, and is set to 22r/min .; In order to fully comb the fibers, the five-point spacing between the cylinder and the movable cover is 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; 4 grains/g, the grade of the cotton net is first grade, and the weight unevenness rate is less than 3.5%. It improves the clarity of the cotton net and the straightness of the fiber, and prevents the harmful yarn defects formed by the derong acrylic blended yarn. The flat card clothing model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on each carding machine, and focus on checking the doffer and doffer For the roller part, control A1 defects within 100 pieces/100,000 m; keep the machine clean, and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of each part unblocked, without scratches , so as not to affect the quality of the cotton web; the part of the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of neps will be generated in the cotton web, which will seriously endanger the quality of the raw sliver.

Step 4: Pre-merging step in the production process

In order to further reduce the unevenness of raw sliver weight, fully mix graphene modal and develvet acrylic fibers and make the blending ratio accurate, before drawing and mixing, first put graphene modal green sliver in the pre-drawing machine for pre-drawing. And process to get pre-drawing; pre-merging root number is 6, pre-drawing wet weight 16.4g/5m, post-drawing multiple 1.82, roller gauge 11*10*20mm, strip speed 170m/min; pre-drawing After the generated waste strips are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips, which are sent to the cotton mixing disc.

Step 5: Drawing frame steps in the production process:

Combine the pre-drawing with the raw sliver of develvet acrylic fiber in one, two and three ways to obtain a three-way mixed sliver.

Use 5 pre-drawing frames and 2 raw slivers of de velvet acrylic fiber to obtain a mixed sliver. The wet weight of the mixed sliver is 17.0g/5m, the post-drawing ratio is 1.86, the roller gauge is 11*10*20mm, and the output The sliver speed is 182m/min; due to the different characteristics of the fibers in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when the sliver is fed together, the position of each sliver is fixed to ensure that the cloth The surface is uniform in style.

The number of two-merging and one-merging strips is 6, the wet weight of the two-merging strips is 16.3g/5m, the post-drawing ratio is 1.59, the roller gauge is 11*10*20mm, and the strip delivery speed is 185m/min.

The number of three-merging and two-merging strips is 6. In order to prevent and control the occurrence of black stars in the yarn, the process speed of the three-merging is appropriately reduced, and the delivery speed is 180m/min; the wet weight of the three-merging strips is 16g/5m, and the final The draft ratio is 1.59, and the roller gauge is 11*10*20mm.

During the drawing process, remove the cotton wax in the yarn channel in time, keep the fiber in a straight state during the drafting process, reduce the phenomenon of fiber hooking, and keep the fiber straight and smooth; strengthen the operation and management, and do a good job of protection. High strips and messy strips are not allowed; keep the protective cover on to prevent flying flowers from attaching and prevent adhesion with other semi-finished products to cause fiber mixing.

Step 6: Roving process steps in the production process:

The three-parallel mixed sliver is processed into roving in the roving process; the roving process adopts the technological principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-draft; since the spun yarn is a Siro compact spinning variety, the roving quantitative Under the premise of meeting the drafting requirements of the spun yarn, it is designed according to the maximum; the graphene fiber is a black fiber, and the isolation and protection work is done to prevent the collision of the semi-finished product and the floating of the fiber, resulting in the phenomenon of fiber mixing; the graphene blended yarn machine and adjacent types of machines In between, use high-density nylon nets to do a good job of strict isolation and protection; transport roving vehicles and storage roving containers, so that they are dedicated to special vehicles, and strictly prevent them from being mixed with other types of vehicle containers; the parameters of the roving process are: post-draft multiple 1.18, twist coefficient 80.1, roller gauge 27*39mm, spindle speed 750r/min.

Step 7: Spinning process steps in the production process:

In the spinning process, after the two rovings are drafted at the same time, they are combined into one siro yarn; strengthen the management of the siro compact spinning accumulation area, and keep the two yarns in the accumulation area clear and stable; for four-roller compact spinning, the small roller diameter The selection is very important. The diameter of the small roller is Ф18.7mm, which solves the problem of unsmooth drafting of the strands; in case of doffing or temporary parking, the negative pressure fan must be turned off, otherwise the suction groove of the special-shaped tube will accumulate a lot of dust and stick to it. The strands in the accumulation area will produce knotted soot defect yarns in the whole machine. The longer the parking time, the more obvious the soot defect yarns will be; use the DW-1 spinning spindle position scanner and special bobbins with built-in chips to regularly check the quality and alarm Outdated spindles, and timely quality tracking and rectification, eliminate outdated spindles, reduce cvb quality differences between spindles, and maintain stable and consistent yarn quality; increase auxiliary light sources, increase illuminance, detect broken ends in time and carry out docking;

Spinning process parameters are: total draft ratio 61, rear draft ratio 1.18, twist coefficient 363, roller gauge 20*50mm, front roller speed 155r/min, gauge 2.3mm;

The waste cotton produced in drawing frame, roving and spinning process is collected, combined to form the first waste strip, and the first waste strip is torn off to form the first broken strip, which is sent to the second cotton grasping machine for recycling.

Step 8: Winding process steps in the production process:

In order to prevent the occurrence of black stars in graphene blended yarns, the winding speed is set at 1150m/min; the electronic clearing FD foreign fiber clearing limit process parameters are turned off; because the electronic yarn clearer intelligently identifies the yarn body, and the removal of yarn defects is in the base yarn On the basis of the average value, the yarn clearing standard is converted by percentage, so the grouping of production varieties should not be less than 10 spindles.

The specification of the modal fiber is 1.30dtex×39mm, the dry breaking strength is 3.5cN/dtex, the dry breaking elongation is 14%, the volume specific resistance is 3.3*10 ⁷ Ω·cm, and the moisture regain is 10.52%;

The specification of the develvet acrylic fiber is 1.3dtex×40mm, glossy, the dry breaking strength is 2.6cN/dtex, the dry breaking elongation is 27%, the volume specific resistance is 1.55*10 ⁶ Ω·cm, and the moisture regain is 2.10%;

The graphene fiber specification is 1.33dtex×38mm, black, dry breaking strength 2.5cN/dtex, dry breaking elongation 20.4%, whiteness 4.5%, volume specific resistance 5.58*10 ⁷ Ω·cm, moisture regain 12.41%;

In the spinning process, the traveler has a large resistance during operation, and the corresponding ring traveler is configured; the PG14054GC high-precision bearing steel fine-polished chrome-plated steel ring is used, and the Swiss Bräcker C1ELudr10/0 traveler; in the spinning process, double pressure rods are used upper pin.

The first bale opener is FA002A automatic bale opener, the first mixed opener is A035D mixed opener, the first cotton opener is FA106 opener, and the first cotton feeder is A092 type cotton feeder , the first coiler is A076A coiler, and the pre-drawframe is FA302 drawframe.

In the winding process, the QPRO60 Murata automatic winding machine is equipped with the USTER QUANTUM3 electronic yarn clearer;

The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, PF cycle number is 30, U is 60 %.

The second plucking machine is FA002A automatic plucking machine, the multi-bin cotton blender is FA022 multi-bin cotton blender, the second cotton opener is FA106A cotton opener, and the second cotton feeder is A092A type cotton feeder , the second lapping machine is A076A lapping machine, the second carding machine is A186G carding machine; the combined draw frame is completed in the FA320A-G40 draw frame, and the second and third draw frames are all in one FA302 Type 3 draw frame, the roving frame is BHFA497 type roving frame; the spinning frame is FA506 type spinning frame.

In order to prevent problems such as unsmooth beard and draft, knotted yarn, knuckle-like soot and large cvb difference between spindles in the spun yarn spinning process, the control of compact spinning and drafting parts is strengthened to prevent the occurrence of knotty yarn defects.

The enhanced control of compact spinning and drafting parts is to check whether the bell mouth is out of position, whether the pressure of the cradle is too small, whether the screws of the cradle are loose, whether the negative pressure pipe joint is falling off and leaking air, whether the suction groove of the special-shaped pipe cover plate is Hanging and clogging, whether the tension hook part is entangled, whether the grid ring is damaged, and whether the transmission gear has accumulated and missing teeth.

The waste cotton produced in the drawing, roving, and spun processes is combined by the first waste drawing and tearing device to form the first waste strip, which is torn to form the first broken strip.

The first scrap drawing frame tearing device is a scrap drawing frame machine that removes the frontmost top roller of the four drawing frame top rollers.

The length of the first broken bar was 300mm.

The waste cotton produced by pre-drawing is combined by the second waste drawing and tearing device to form the second waste strip and torn to form the second broken strip; the second waste drawing and tearing device is to remove four drawing rollers Second scrap draw frame for frontmost top rollers.

Example 2. Modal, develvet acrylic fiber, graphene fiber compact siro spinning process, the spinning process adopts siro compact spinning process, it is characterized in that the blended yarn made includes 52% Lenzing Modal, 28% German velvet acrylic fiber, and the rest are graphene fibers; the number of blended yarns is 11.8tex; specifically include the following steps.

Step 1: Raw material preparation step in the production process

Before opening and cleaning cotton, first pack the three raw materials of modal fiber, develvet acrylic fiber, and graphene fiber, cut off the packing tape in the pre-loosening room, and place it for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; The temperature is controlled at 28°C-32°C, and the relative humidity in the workshop is controlled at 58%-62%; the modal fiber raw material is treated with moisture to make its moisture regain reach 12.41%.

Step 2: Opening and cleaning steps in the production process:

Set up a number of circular arrays of cotton mixing discs, divide the modal fiber and graphene fiber into several parts, put each row into a cotton mixing disc, grab the raw materials through the first cotton grabber, and pass through the first mixed cotton opener Carry out opening, mixing, and impurity removal; when the first grabbing machine grabs raw materials, it grabs a layer of raw materials from each mixing disc ring in order to achieve the purpose of mixing evenly.

Opening, carding, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine, so as to obtain the first cotton lap; the primary cotton lap Divide into several parts, and put each row of cotton rolls into a cotton mixing disc.

Once again, the raw materials are grasped circularly on the horizontal plane along each cotton mixing disc by the first bale grabbing machine, followed by opening, mixing, and impurity removal through the first cotton opening machine, and opening and carding by the first cotton opening machine , impurity removal, the cotton layer is evenly conveyed through the first cotton feeder, and evenly mixed into rolls through the first roll forming, so as to obtain the second cotton roll; the quality index of the second cotton roll is: the length of the cotton roll is 27m, the wetness of the cotton roll The weight is 405g/m, the elongation is 2.63%, and the meter weight unevenness is 1.0%.

Put the derong acrylic fiber into the second catching machine, grab and mix it through the second catching machine and multi-compartment blending machine, open, card and remove impurities through the second cotton opener, and pass through the second cotton feeding machine. Cotton layer is evenly transported by the machine, and rolled by the second lapping machine to obtain the third cotton lap; the lapping roller of the second lapping machine is provided with a heating rod, and the heating temperature of the lapping roller is 70-80 degrees Celsius ; When the second lapping machine is rolled, the German velvet acrylic fiber roving is used for isolation; the third lap quality index is: lap length 27m, lap wet weight 403/m, elongation 1.44%, meter weight The average rate is 0.9%.

Step 3: Carding process steps in the production process:

Put the second cotton roll into the first carding machine for carding to obtain graphene modal raw slivers; the cylinder speed is slightly higher to reduce the load on the needle surface and strengthen carding, and the speed is set to 330r/min; the licker-in speed is appropriately reduced , which is conducive to fiber transfer, set the licker-in speed to 780r/min; because the raw material contains less impurities, the cover plate speed is controlled at 88.4mm/min; in order to improve the quality of the cotton web, reduce the doffer speed to 22r/min; in order to make the fiber Fully combed, the five-point spacing between the cylinder and the movable cover is set to 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; the graphene modal raw strips are 18.8g-19g/5m in weight, and the knot is 4 grains/g , The grade of the cotton net is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of the cotton net and the straightness of the fiber, prevent black stars and harmful yarn defects formed by graphene blended yarns, and configure suitable card clothing models, cover needles The cloth model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on the first carding machine one by one, and focus on checking the doffer and licker-in roller For the part, control A1 defects within 100 pieces/100,000 m; keep the machine clean, and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of each part unblocked, without scratches. In order not to affect the quality of the cotton net; the cotton net cleaner must be cleaned by the operator at any time. Once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of sliver.

Put the third lap into the second carding machine for carding to obtain velvet acrylic raw slivers; a slightly higher cylinder speed can reduce the load on the needle surface and enhance carding, and the speed is set to 330r/min; the licker-in speed is appropriate Decrease, which is beneficial to fiber transfer, set the licker-in speed to 850r/min; reduce the cover plate speed to 88.4mm/min because the raw material contains less impurities; the doffer speed is slightly lower, which is beneficial to improve the quality of the cotton web, and is set to 22r/min .;

In order to fully comb the fibers, the five-point spacing between the cylinder and the movable cover is 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; /g, the grade of cotton web is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of cotton web and fiber straightness, prevent harmful yarn defects formed by derong acrylic blended yarn, and configure suitable card clothing models and cover plates The card clothing model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on each carding machine, and focus on checking the doffer and licker-in parts , control the A1 defect within 100 pieces/100,000 m; keep the machine clean, and strictly prevent the defects from being brought into the cotton net; Affect the quality of the cotton web; the position of the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of neps will be generated on the cotton web, which will seriously endanger the quality of the raw sliver.

Step 4: Pre-merging step in the production process

In order to further reduce the unevenness of raw sliver weight, fully mix graphene modal and develvet acrylic fiber and promote the accurate blending ratio, before drawing and mixing, the graphene modal green sliver is pre-drawn in the pre-drawing machine. Treated to obtain pre-drawing; the number of pre-drawing and merging is 6, the wet weight of pre-drawing is 19.4g/5m, the post-drawing multiple is 1.82, the roller gauge is 11*10*20mm, and the stripping speed is 170m/min; After the generated waste strips are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips, which are sent to the cotton mixing disc.

Step 5: Drawing frame steps in the production process:

Combine the pre-drawing with the raw sliver of develvet acrylic fiber in one, two and three ways to obtain a three-way mixed sliver.

Use 5 pre-drawing frames and 2 raw slivers of de velvet acrylic fiber to obtain a mixed sliver. The wet weight of the mixed sliver is 17.0g/5m, the post-drawing ratio is 1.86, the roller gauge is 11*10*20mm, and the output The sliver speed is 182m/min; due to the different characteristics of the fibers in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when the sliver is fed together, the position of each sliver is fixed to ensure that the cloth The surface is uniform in style.

The number of two-merging and one-merging strips is 6, the wet weight of the two-merging strips is 16.3g/5m, the post-drawing ratio is 1.59, the roller gauge is 11*10*20mm, and the strip delivery speed is 185m/min.

The number of three-merging and two-merging strips is 6. In order to prevent and control the occurrence of black stars in the yarn, the process speed of the three-merging is appropriately reduced, and the delivery speed is 180m/min; the wet weight of the three-merging strips is 16g/5m, and the final The draft ratio is 1.59, and the roller gauge is 11*10*20mm.

During the drawing process, remove the cotton wax in the yarn channel in time, keep the fiber in a straight state during the drafting process, reduce the phenomenon of fiber hooking, and keep the fiber straight and smooth; strengthen the operation and management, and do a good job of protection. High strips and messy strips are not allowed; keep the protective cover on to prevent flying flowers from attaching and prevent adhesion with other semi-finished products to cause fiber mixing.

Step 6: Roving process steps in the production process:

The three-fold mixed sliver is processed into roving in the roving process; the roving process adopts the technological principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-draft; since the spun yarn is a Siro compact spinning variety, the roving quantitative Under the premise of meeting the drafting requirements of the spun yarn, it is designed according to the maximum; the graphene fiber is a black fiber, and the isolation and protection work is done to prevent the semi-finished product from colliding and the fiber floating, causing the fiber mixing phenomenon; the graphene blended yarn machine and the adjacent variety machine In between, use high-density nylon nets to do a good job of strict isolation and protection; transport roving vehicles and storage roving containers, so that they are dedicated to special vehicles, and strictly prevent them from being mixed with other types of vehicle containers; the parameters of the roving process are: post-draft multiple 1.18, twist coefficient 80.1, roller gauge 27*39mm, spindle speed 750r/min.

Step 7: Spinning process steps in the production process:

In the spinning process, after the two rovings are drafted at the same time, they are combined into one siro yarn; strengthen the management of the siro compact spinning accumulation area, and keep the two yarns in the accumulation area clear and stable; for four-roller compact spinning, the small roller diameter The selection is very important. The diameter of the small roller is Ф18.7mm, which solves the problem of unsmooth drafting of the strands; in case of doffing or temporary parking, the negative pressure fan must be turned off, otherwise the suction groove of the special-shaped tube will accumulate a lot of dust and stick to it. The strands in the accumulation area will produce knotted soot defect yarns in the whole machine. The longer the parking time, the more obvious the soot defect yarns will be; use the DW-1 spinning spindle position scanner and special bobbins with built-in chips to regularly check quality alarms Outdated spindles, and timely quality tracking and rectification, eliminate outdated spindles, reduce cvb quality differences between spindles, and maintain stable and consistent yarn quality; increase auxiliary light sources, increase illuminance, detect broken ends in time and carry out docking;

Spinning process parameters are: total draft ratio 61-63, rear draft ratio 1.18-1.20, twist coefficient 361-363, roller gauge 20*50mm, front roller speed 145-155r/min, gauge 2.1-2.3mm ;

The waste cotton produced in drawing frame, roving and spinning process is collected, combined to form the first waste strip, and the first waste strip is torn off to form the first broken strip, which is sent to the second cotton grasping machine for recycling.

Step 8: Winding process steps in the production process:

In order to prevent the occurrence of black stars in graphene blended yarns, the winding speed is set at 1100-1150m/min; the electric clearer FD foreign fiber clearing limit process parameters are turned off; since the electronic yarn clearer intelligently identifies the yarn body, and the removal of yarn defects is On the basis of the average value of the base yarn, the yarn clearing benchmark is converted by percentage, so the grouping of production varieties should not be less than 10 spindles.

The specification of the modal fiber is 1.30dtex×39mm, the dry breaking strength is 3.5cN/dtex, the dry breaking elongation is 14%, the volume specific resistance is 3.3*10 ⁷ Ω·cm, and the moisture regain is 10.52%;

The specification of the develvet acrylic fiber is 1.3dtex×40mm, glossy, the dry breaking strength is 2.6cN/dtex, the dry breaking elongation is 27%, the volume specific resistance is 1.55*10 ⁶ Ω·cm, and the moisture regain is 2.10%;

The graphene fiber specification is 1.33dtex×38mm, black, dry breaking strength 2.5cN/dtex, dry breaking elongation 20.4%, whiteness 4.5%, volume specific resistance 5.58*10 ⁷ Ω·cm, moisture regain 12.41%;

In the spinning process, the traveler has a large resistance during operation, and the corresponding ring traveler is configured; the PG14054GC high-precision bearing steel fine-polished chrome-plated steel ring is used, and the Swiss Bräcker C1ELudr10/0 traveler; in the spinning process, double pressure rods are used upper pin.

The first bale opener is FA002A automatic bale opener, the first mixed opener is A035D mixed opener, the first cotton opener is FA106 opener, and the first cotton feeder is A092 type cotton feeder , the first coiler is A076A coiler, and the pre-drawframe is FA302 drawframe.

In the winding process, the QPRO60 Murata automatic winding machine is equipped with the USTER QUANTUM3 electronic yarn clearer;

The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, PF cycle number is 30, U is 60 %.

The second plucking machine is FA002A automatic plucking machine, the multi-bin cotton blender is FA022 multi-bin cotton blender, the second cotton opener is FA106A cotton opener, and the second cotton feeder is A092A type cotton feeder , the second lapping machine is A076A lapping machine, the second carding machine is A186G carding machine; the combined draw frame is completed in the FA320A-G40 draw frame, and the second and third draw frames are all in one FA302 Type 3 draw frame, the roving frame is BHFA497 type roving frame; the spinning frame is FA506 type spinning frame.

In order to prevent problems such as unsmooth beard and draft, knotted yarn, knuckle-like soot and large cvb difference between spindles in the spun yarn spinning process, the control of compact spinning and drafting parts is strengthened to prevent the occurrence of knotty yarn defects.

The enhanced control of compact spinning and drafting parts is to check whether the bell mouth is out of position, whether the pressure of the cradle is too small, whether the screws of the cradle are loose, whether the negative pressure pipe joint is falling off and leaking air, whether the suction groove of the special-shaped pipe cover plate is Hanging and clogging, whether the tension hook part is entangled, whether the grid ring is damaged, and whether the transmission gear has accumulated and missing teeth.

The waste cotton produced in the drawing, roving, and spun processes is combined by the first waste drawing and tearing device to form the first waste strip, which is torn to form the first broken strip.

The first scrap drawing frame tearing device is a scrap drawing frame machine that removes the frontmost top roller of the four drawing frame top rollers.

The length of the first broken bar was 300mm.

The waste cotton produced by pre-drawing is combined by the second waste drawing and tearing device to form the second waste strip and torn to form the second broken strip; the second waste drawing and tearing device is to remove four drawing rollers Second scrap draw frame for frontmost top rollers.

Example 3. Modal, develvet acrylic fiber, graphene fiber compact siro spinning process, the spinning process adopts siro compact spinning process, characterized in that the blended yarn made includes 50% Lenzing Modal, 30% German velvet acrylic fiber, and the rest are graphene fibers; the number of blended yarns is 11.8tex; specifically include the following steps.

Step 1: Raw material preparation step in the production process

Before opening and cleaning cotton, first pack the three raw materials of modal fiber, develvet acrylic fiber, and graphene fiber, cut off the packing tape in the pre-loosening room, and place it for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; The temperature is controlled at 28°C-32°C, and the relative humidity in the workshop is controlled at 58%-62%; the modal fiber raw material is treated with moisture to make its moisture regain reach 12.41%.

Step 2: Opening and cleaning steps in the production process:

Set up a number of circular arrays of cotton mixing discs, divide the modal fiber and graphene fiber into several parts, put each row into a cotton mixing disc, grab the raw materials through the first cotton grabber, and pass through the first mixed cotton opener Carry out opening, mixing, and impurity removal; when the first grabbing machine grabs raw materials, it grabs a layer of raw materials from each mixing disc ring in order to achieve the purpose of mixing evenly.

Opening, carding, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine, so as to obtain the first cotton lap; the primary cotton lap Divide it into several parts, put each row of cotton rolls into a cotton mixing disc, and then pass the first cotton grabbing machine to grab the raw materials circularly along each mixing disc on the horizontal plane, and then go through the first mixing opener in turn. Loosening, mixing, and impurity removal, opening, carding, and impurity removal through the first cotton opener, uniformly conveying the cotton layer through the first cotton feeder, and uniformly mixing into rolls through the first roll forming, so as to obtain the second cotton rolls; the second lap quality indicators are: lap length 27m, lap wet weight 405g/m, elongation 2.63%, meter weight unevenness 1.0%.

Put the derong acrylic fiber into the second catching machine, grab and mix it through the second catching machine and multi-compartment blending machine, open, card and remove impurities through the second cotton opener, and pass through the second cotton feeding machine. The cotton layer is evenly conveyed by the machine, and rolled by the second lapping machine to obtain the third cotton lap; the lapping roller of the second lapping machine is provided with a heating rod, and the heating temperature of the lapping roller is 80 degrees Celsius; When the second lapping machine is coiled, the velvet acrylic fiber roving is used for isolation; the third lap quality indicators are: lap length 27m, lap wet weight 403/m, elongation 1.44%, meter weight unevenness 0.9%.

Step 3: Carding process steps in the production process:

Put the second cotton roll into the first carding machine for carding to obtain graphene modal raw slivers; the cylinder speed is slightly higher to reduce the load on the needle surface and strengthen carding, and the speed is set to 330r/min; the licker-in speed is appropriately reduced , which is conducive to fiber transfer, set the licker-in speed to 780r/min; because the raw material contains less impurities, the cover plate speed is controlled at 88.4mm/min; in order to improve the quality of the cotton web, reduce the doffer speed to 22r/min; in order to make the fiber Fully carded, the five-point spacing between the cylinder and the movable cover is set to 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; the weight of graphene modal raw strips is 19g/5m, the knot is 4 grains/g, cotton net Grade I, weight unevenness <3.5%; improve the clarity of the cotton web and fiber straightness, prevent black stars and harmful yarn defects formed by graphene blended yarns, and configure suitable card clothing models, and the flat card clothing models use TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; Strictly control the A1 defect, do a follow-up test on the first carding machine one by one, focus on checking the doffer and licker-in part, and A1 Defects are controlled within 100 pieces/100,000 m; keep the machine clean, and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of all parts unblocked, without scratches, so as not to affect the cotton The quality of the cotton net; the cotton net cleaner must be cleaned by the operator at any time. Once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of raw sliver.

Put the third lap into the second carding machine for carding to obtain velvet acrylic raw slivers; a slightly higher cylinder speed can reduce the load on the needle surface and enhance carding, and the speed is set to 330r/min; the licker-in speed is appropriate Decrease, which is beneficial to fiber transfer, set the licker-in speed to 850r/min; reduce the cover plate speed to 88.4mm/min because the raw material contains less impurities; the doffer speed is slightly lower, which is beneficial to improve the quality of the cotton web, and is set to 22r/min .; In order to fully comb the fibers, the five-point spacing between the cylinder and the movable cover is 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; /g, the grade of cotton web is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of cotton web and fiber straightness, prevent harmful yarn defects formed by derong acrylic blended yarn, and configure suitable card clothing models and cover plates The card clothing model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on each carding machine, and focus on checking the doffer and licker-in parts , control the A1 defect within 100 pieces/100,000 m; keep the machine clean, and strictly prevent the defects from being brought into the cotton net; Affect the quality of the cotton web; the position of the cotton web cleaner must be cleaned by the operator at any time. Once the cotton web cleaner is blocked, a large number of neps will be generated on the cotton web, which will seriously endanger the quality of the raw sliver.

Step 4: Pre-merging step in the production process

In order to further reduce the unevenness of raw sliver weight, fully mix graphene modal and develvet acrylic fiber and promote the accurate blending ratio, before drawing and mixing, the graphene modal green sliver is pre-drawn in the pre-drawing machine. The pre-drawing is obtained by processing; the number of pre-drawing is 6, the pre-drawing wet weight is 18g/5m, the post-drawing multiple is 1.82, the roller gauge is 11*10*20mm, and the strip speed is 170m/min; the pre-drawing produces After the waste strips are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips, which are sent to the cotton mixing disc.

Step 5: Drawing frame steps in the production process:

Combine the pre-drawing with the raw sliver of develvet acrylic fiber in one, two and three ways to obtain a three-way mixed sliver.

Use 5 pre-drawing frames and 2 raw slivers of de velvet acrylic fiber to obtain a mixed sliver. The wet weight of the mixed sliver is 17.0g/5m, the post-drawing ratio is 1.86, the roller gauge is 11*10*20mm, and the output The sliver speed is 182m/min; due to the different characteristics of the fibers in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when the sliver is fed together, the position of each sliver is fixed to ensure that the cloth The surface is uniform in style.

The number of two-merging and one-merging strips is 6, the wet weight of the two-merging strips is 16.3g/5m, the post-drawing ratio is 1.59, the roller gauge is 11*10*20mm, and the strip delivery speed is 185m/min.

The number of three-merging and two-merging strips is 6. In order to prevent and control the occurrence of black stars in the yarn, the process speed of the three-merging is appropriately reduced, and the delivery speed is 180m/min; the wet weight of the three-merging strips is 16g/5m, and the final The draft ratio is 1.59, and the roller gauge is 11*10*20mm.

During the drawing process, remove the cotton wax in the yarn channel in time, keep the fiber in a straight state during the drafting process, reduce the phenomenon of fiber hooking, and keep the fiber straight and smooth; strengthen the operation and management, and do a good job of protection. High strips and messy strips are not allowed; keep the protective cover on to prevent flying flowers from attaching and prevent adhesion with other semi-finished products to cause fiber mixing.

Step 6: Roving process steps in the production process:

The three-parallel mixed sliver is processed into roving in the roving process; the roving process adopts the technological principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-draft; since the spun yarn is a Siro compact spinning variety, the roving quantitative Under the premise of meeting the drafting requirements of the spun yarn, it is designed according to the maximum; the graphene fiber is a black fiber, and the isolation and protection work is done to prevent the collision of the semi-finished product and the floating of the fiber, resulting in the phenomenon of fiber mixing; the graphene blended yarn machine and adjacent types of machines In between, use high-density nylon nets to do a good job of strict isolation and protection; transport roving vehicles and storage roving containers, so that they are dedicated to special vehicles, and strictly prevent them from being mixed with other types of vehicle containers; the parameters of the roving process are: post-draft multiple 1.18, twist coefficient 80.1, roller gauge 27*39mm, spindle speed 750r/min.

Step 7: Spinning process steps in the production process:

In the spinning process, after the two rovings are drafted at the same time, they are combined into one siro yarn; strengthen the management of the siro compact spinning accumulation area, and keep the two yarns in the accumulation area clear and stable; for four-roller compact spinning, the small roller diameter The selection is very important. The diameter of the small roller is Ф18.7mm, which solves the problem of unsmooth drafting of the strands; in case of doffing or temporary parking, the negative pressure fan must be turned off, otherwise the suction groove of the special-shaped tube will accumulate a lot of dust and stick to it. The strands in the accumulation area will produce knotted soot defect yarns in the whole machine. The longer the parking time, the more obvious the soot defect yarns will be; use the DW-1 spinning spindle position scanner and special bobbins with built-in chips to regularly check the quality and alarm Outdated spindles, and timely quality tracking and rectification, eliminate outdated spindles, reduce cvb quality differences between spindles, and maintain stable and consistent yarn quality; increase auxiliary light sources, increase illuminance, detect broken ends in time and carry out docking;

Spinning process parameters are: total draft ratio 63, rear draft ratio 1.20, twist coefficient 363, roller gauge 20*50mm, front roller speed 145-155r/min, gauge 2.1-2.3mm;

The waste cotton produced in drawing frame, roving and spinning process is collected, combined to form the first waste strip, and the first waste strip is torn off to form the first broken strip, which is sent to the second cotton grasping machine for recycling.

Step 8: Winding process steps in the production process:

In order to prevent the occurrence of black stars in graphene blended yarns, the winding speed is set at 1100-1150m/min; the electric clearer FD foreign fiber clearing limit process parameters are turned off; since the electronic yarn clearer intelligently identifies the yarn body, and the removal of yarn defects is On the basis of the average value of the base yarn, the yarn clearing benchmark is converted by percentage, so the grouping of production varieties should not be less than 10 spindles.

The specification of the modal fiber is 1.30dtex×39mm, the dry breaking strength is 3.5cN/dtex, the dry breaking elongation is 14%, the volume specific resistance is 3.3*10 ⁷ Ω·cm, and the moisture regain is 10.52%;

The specification of the develvet acrylic fiber is 1.3dtex×40mm, glossy, the dry breaking strength is 2.6cN/dtex, the dry breaking elongation is 27%, the volume specific resistance is 1.55*10 ⁶ Ω·cm, and the moisture regain is 2.10%;

The graphene fiber specification is 1.33dtex×38mm, black, dry breaking strength 2.5cN/dtex, dry breaking elongation 20.4%, whiteness 4.5%, volume specific resistance 5.58*10 ⁷ Ω·cm, moisture regain 12.41%;

In the spinning process, the traveler has a large resistance during operation, and the corresponding ring traveler is configured; the PG14054GC high-precision bearing steel fine-polished chrome-plated steel ring is used, and the Swiss Bräcker C1ELudr10/0 traveler; in the spinning process, double pressure rods are used upper pin.

The first bale opener is FA002A automatic bale opener, the first mixed opener is A035D mixed opener, the first cotton opener is FA106 opener, and the first cotton feeder is A092 type cotton feeder , the first coiler is A076A coiler, and the pre-drawframe is FA302 drawframe.

In the winding process, the QPRO60 Murata automatic winding machine is equipped with the USTER QUANTUM3 electronic yarn clearer;

The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, PF cycle number is 30, U is 60 %.

The second plucking machine is FA002A automatic plucking machine, the multi-bin cotton blender is FA022 multi-bin cotton blender, the second cotton opener is FA106A cotton opener, and the second cotton feeder is A092A type cotton feeder , the second lapping machine is A076A lapping machine, the second carding machine is A186G carding machine; the combined draw frame is completed in the FA320A-G40 draw frame, and the second and third draw frames are all in one FA302 Type 3 draw frame, the roving frame is BHFA497 type roving frame; the spinning frame is FA506 type spinning frame.

In order to prevent problems such as unsmooth beard and draft, knotted yarn, knuckle-like soot and large cvb difference between spindles in the spun yarn spinning process, the control of compact spinning and drafting parts is strengthened to prevent the occurrence of knotty yarn defects.

The enhanced control of compact spinning and drafting parts is to check whether the bell mouth is out of position, whether the pressure of the cradle is too small, whether the screws of the cradle are loose, whether the negative pressure pipe joint is falling off and leaking air, whether the suction groove of the special-shaped pipe cover plate is Hanging and clogging, whether the tension hook part is entangled, whether the grid ring is damaged, and whether the transmission gear has accumulated and missing teeth.

The waste cotton produced in the drawing, roving, and spun processes is combined by the first waste drawing and tearing device to form the first waste strip, which is torn to form the first broken strip.

The first scrap drawing frame tearing device is a scrap drawing frame machine that removes the frontmost top roller of the four drawing frame top rollers.

The length of the first broken bar was 300mm.

The waste cotton produced by pre-drawing is combined by the second waste drawing and tearing device to form the second waste strip and torn to form the second broken strip; the second waste drawing and tearing device is to remove four drawing rollers Second scrap draw frame for frontmost top rollers.

According to the technical requirements of FZ/T12051-2016 "Acrylic Viscose Fiber Blended Natural Yarn" for superior products, the measured data are shown in Table 7 below.

Table 7 yarn test results Test items Embodiment 1 detection result Embodiment 1 detection result Embodiment 3 detection result standard requirement assessment Linear density deviation rate (%) 1.2 0.8 1.3 ±2.0 qualified Coefficient of variation of linear density (%) 0.9 0.9 1.0 ≤2.0 qualified Single yarn breaking strength (cN/tex) 13.2 13.3 13.2 ≥12.0 qualified Coefficient of variation of single yarn breaking strength (%) 8.5 8.6 8.7 ≤10.0 qualified Evenness coefficient of variation (%) 12.4 12.4 12.5 ≤13.0 qualified Kilometer neps (pieces/10 ³ m) 15 14 14 ≤26 qualified

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Still belong to the protection scope of the present invention.

Claims (6)

1. The compact siro spinning process of modal, develvet acrylic fiber, and graphene fiber, the spinning process adopts the siro compact spinning process, and it is characterized in that the blended yarn made includes 48-52% Lenzing according to the weight ratio Modal, 28-32% de velvet acrylic fiber, and the rest are graphene fibers; the number of blended yarns is 11.8tex; the specific steps are as follows: Step 1: Raw material preparation step in the production process Before opening and cleaning cotton, first pack the three raw materials of modal fiber, develvet acrylic fiber, and graphene fiber, cut off the packing tape in the pre-loosening room, and place it for more than 24 hours to balance and adapt to the temperature and humidity environment in the workshop; The temperature is controlled at 28°C-32°C, and the relative humidity in the workshop is controlled at 58%-62%; the modal fiber raw material is wetted to make its moisture regain reach 12.41%; Step 2: Opening and cleaning steps in the production process: Set up a number of circular arrays of cotton mixing discs, divide the modal fiber and graphene fiber into several parts, put each row into a cotton mixing disc, grab the raw materials through the first cotton grabber, and pass through the first mixed cotton opener Carry out opening, mixing, and impurity removal; when the first grabbing machine grabs the raw materials, it grabs a layer of raw materials in each mixing disc ring in order to achieve the purpose of mixing evenly; Opening, mixing, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine, so as to obtain the first cotton lap; Each row of primary cotton laps is divided into several parts, and the cotton laps of each row are put into a cotton mixing disc, and then the raw materials are grasped circularly on the horizontal plane along the cotton mixing discs by the first grabbing machine, and then passed through the first cotton mixing disc in turn. Opening, mixing, and impurity removal by mixing and opening, opening, carding, and impurity removal by the first cotton opener, uniformly conveying the cotton layer by the first cotton feeder, and uniformly mixing and forming rolls by the first lapping machine , thus obtaining the second lap; the quality index of the second lap is: lap length 27m, lap wet weight 405g/m, elongation 2.63%, meter weight unevenness 1.0%; Put the derong acrylic fiber into the second catching machine, grab and mix it through the second catching machine and multi-compartment blending machine, open, card and remove impurities through the second cotton opener, and pass through the second cotton feeding machine. Cotton layer is evenly transported by the machine, and rolled by the second lapping machine to obtain the third cotton lap; the lapping roller of the second lapping machine is provided with a heating rod, and the heating temperature of the lapping roller is 70-80 degrees Celsius ; When the second lapping machine is rolled, the German velvet acrylic fiber roving is used for isolation; the third lap quality index is: lap length 27m, lap wet weight 403/m, elongation 1.44%, meter weight Uniform rate 0.9%; Step 3: Carding process steps in the production process: Put the second cotton roll into the first carding machine for carding to obtain graphene modal raw slivers; the cylinder speed is slightly higher to reduce the load on the needle surface and strengthen carding, and the speed is set to 330r/min; the licker-in speed is appropriately reduced , which is conducive to fiber transfer, set the licker-in speed to 780r/min; because the raw material contains less impurities, the cover plate speed is controlled at 88.4mm/min; in order to improve the quality of the cotton web, reduce the doffer speed to 22r/min; in order to make the fiber Fully combed, the five-point spacing between the cylinder and the movable cover is set to 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; the graphene modal raw strips are 18.8g-19g/5m in weight, and the knot is 4 grains/g , The grade of the cotton net is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of the cotton net and the straightness of the fiber, and configure the appropriate card clothing model, the flat card clothing model adopts TPT-52, and the doffer card clothing model adopts AD4030× 01870, the model of cylinder card clothing adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on the first carding machine one by one, focus on the doffer and licker-in part, and control the A1 defect within 100 pieces/100,000 m ;Keep the machine clean and strictly prevent defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, keep the suction ducts of all parts unimpeded, and prevent scratches from affecting the quality of the cotton net; It must be cleaned at any time, once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of sliver; Put the third lap into the second carding machine for carding to obtain velvet acrylic raw sliver; a slightly higher cylinder speed can reduce the load on the needle surface and enhance carding, and its speed is set at 330r/min; the licker-in speed is appropriate Decrease, which is beneficial to fiber transfer, set the licker-in speed to 850r/min; reduce the cover plate speed to 88.4mm/min because the raw material contains less impurities; the doffer speed is slightly lower, which is beneficial to improve the quality of the cotton web, and is set to 22r/min .; In order to fully comb the fibers, the five-point spacing between the cylinder and the movable cover is 0.18mm*0.16mm*0.16mm*0.16mm*0.18mm; /g, the grade of cotton net is first grade, and the weight unevenness rate is less than 3.5%; improve the clarity of cotton net and fiber straightness, prevent black stars and harmful yarn defects formed by graphene blended yarns, and configure suitable card clothing models, cover The plate card clothing model adopts TPT-52, the doffer card clothing model adopts AD4030×01870, and the cylinder card clothing model adopts AC2030-01740; strictly control the A1 defect, do a follow-up test on each carding machine, and focus on checking the doffers and licker-in rollers Partly, control the A1 defect within 100 pieces/100,000 m; keep the machine clean, and strictly prevent the defects from being brought into the cotton net by scratches; improve the dust filtering effect to reduce the accumulation of short fibers, and keep the suction ducts of each part unblocked, without scratches, In order not to affect the quality of the cotton net; the cotton net cleaner must be cleaned by the operator at any time. Once the cotton net cleaner is blocked, a large number of neps will be generated in the cotton net, which will seriously endanger the quality of sliver; Step 4: Pre-merging step in the production process In order to further reduce the unevenness of raw sliver weight, fully mix graphene modal and develvet acrylic fiber and promote the accurate blending ratio, before drawing and mixing, the graphene modal green sliver is pre-drawn in the pre-drawing machine. The pre-drawing is obtained by processing; the number of pre-drawing and merging is 6, the pre-drawing wet weight is 18.4g/5m, the post-drawing multiple is 1.82, the roller gauge is 11*10*20mm, and the stripping speed is 170m/min; the pre-drawing After the generated waste strips are collected, they are combined to form the second waste strips, and the second waste strips are torn off to form the second broken strips, which are sent to the cotton mixing disc; Step 5: Drawing frame steps in the production process: The pre-drawing and the raw sliver of Derong acrylic fiber are merged, doubled and tripled to obtain a three-folded mixed strip; Use 5 pre-strips and 2 velvet acrylic raw slivers together to obtain a mixed sliver. The wet weight of the mixed sliver is 17.0g/5m, the post-drawing ratio is 1.86, the roller gauge is 11*10*20mm, and the sliver The speed is 182m/min; due to the different fiber characteristics in the graphene blended yarn, in order to keep the distribution of various fibers in the blended yarn consistent in the yarn structure, when the slivers are fed together, each sliver is fixed in position to ensure the cloth surface Uniform and consistent style; The number of double-merging and one-merging strips is 6, the wet weight of the two-merging strips is 16.3g/5m, the post-drawing ratio is 1.59, the roller gauge is 11*10*20mm, and the stripping speed is 185m/min; The number of three-merging and two-merging strips is 6. In order to prevent and control the occurrence of black stars in the yarn, the process speed of the three-merging is appropriately reduced, and the delivery speed is 180m/min; the wet weight of the three-merging strips is 16g/5m, and the final Drafting ratio 1.59, roller gauge 11*10*20mm; During the drawing process, remove the cotton wax in the yarn channel in time, keep the fiber in a straight state during the drafting process, reduce the phenomenon of fiber hooking, and keep the fiber straight and smooth; strengthen the operation and management, and do a good job of protection. High strips and messy strips are not allowed; keep the protective cover on to prevent flying flowers from attaching and prevent adhesion with other semi-finished products to cause fiber mixing; Step 6: Roving process steps in the production process: The three-parallel mixed sliver is processed into roving in the roving process; the roving process adopts the technological principles of low speed, large gauge, heavy pressure, large twist coefficient, and small post-draft; since the spun yarn is a Siro compact spinning variety, the roving quantitative Under the premise of meeting the drafting requirements of the spun yarn, it is designed according to the maximum; the graphene fiber is a black fiber, and the isolation and protection work is done to prevent the collision of the semi-finished product and the floating of the fiber, resulting in the phenomenon of fiber mixing; the graphene blended yarn machine and adjacent types of machines In between, use high-density nylon nets to do a good job of strict isolation and protection; transport roving vehicles and storage roving containers, so that they are dedicated to special vehicles, and strictly prevent them from being mixed with other types of vehicle containers; the parameters of the roving process are: post-draft multiple 1.18, twist coefficient 80.1, roller gauge 27*39mm, spindle speed 750r/min; Step 7: Spinning process steps in the production process: In the spinning process, after the two rovings are drafted at the same time, they are combined into one siro yarn; strengthen the management of the siro compact spinning accumulation area, and keep the two yarns in the accumulation area clear and stable; for four-roller compact spinning, the small roller diameter The selection is very important. The diameter of the small roller is Ф18.7mm, which solves the problem of unsmooth drafting of the strands; in case of doffing or temporary parking, the negative pressure fan must be turned off, otherwise the suction groove of the special-shaped tube will accumulate a lot of dust and stick to it. The strands in the accumulation area will produce knotted soot defect yarns in the whole machine. The longer the parking time, the more obvious the soot defect yarns will be; use the DW-1 spinning spindle position scanner and special bobbins with built-in chips to regularly check the quality and alarm Outdated spindles, and timely quality tracking and rectification, eliminate outdated spindles, reduce cvb quality differences between spindles, and maintain stable and consistent yarn quality; increase auxiliary light sources, increase illuminance, detect broken ends in time and carry out docking; Spinning process parameters are: total draft ratio 63, rear draft ratio 1.20, twist coefficient 363, roller gauge 20*50mm, front roller speed 145-155r/min, gauge 2.1-2.3mm; Collect the waste cotton produced in the drawing, roving and spinning processes, and combine them to form the first waste strip, tear the first waste strip to form the first broken strip, and send it to the second cotton grasping machine for recycling; Step 8: Winding process steps in the production process: In order to prevent the occurrence of black stars in graphene blended yarns, the winding speed is set at 1100-1150m/min; the electric clearer FD foreign fiber clearing limit process parameters are turned off; since the electronic yarn clearer intelligently identifies the yarn body, and the removal of yarn defects is On the basis of the average value of the base yarn, the yarn clearing standard is converted by percentage, so the grouping of production varieties shall not be less than 10 spindles; Combining the waste cotton produced in the drawing, roving, and spun processes through the first waste drawing and tearing device to form the first waste strip and tear it to form the first broken strip; The first scrap drawing and tearing device is a scrap drawing frame that removes the frontmost top rollers of the four drawing rollers; the length of the first broken strip is 260-300mm; The waste cotton produced by pre-drawing is combined by the second waste drawing and tearing device to form the second waste strip and torn to form the second broken strip; the second waste drawing and tearing device is to remove four drawing rollers Second scrap draw frame for frontmost top rollers. 2. The compact Siro spinning process of modal, develvet acrylic fiber and graphene fiber as claimed in claim 1, characterized in that: the specification of the modal fiber is 1.30dtex×39mm, the dry breaking strength is 3.5cN/dtex, and the dry breaking strength is 3.5cN/dtex. Elongation 14%, volume specific resistance 3.3*10 ⁷ Ω·cm, moisture regain 10.52%; The specification of the develvet acrylic fiber is 1.3dtex×40mm, glossy, the dry breaking strength is 2.6cN/dtex, the dry breaking elongation is 27%, the volume specific resistance is 1.55*10 ⁶ Ω·cm, and the moisture regain is 2.10%; The graphene fiber has a specification of 1.33dtex×38mm, black color, dry breaking strength of 2.5cN/dtex, dry breaking elongation of 20.4%, whiteness of 4.5%, volume specific resistance of 5.58*10 ⁷ Ω·cm, and moisture regain of 12.41%. 3. The compact siro spinning process of modal, develvet acrylic fiber and graphene fiber as claimed in claim 1, characterized in that: in the spinning process, the traveler has a large resistance in the running process, and the ring steel wire adapted to it is configured ring; use PG14054GC high-precision bearing steel fine polishing chrome-plated steel ring, Swiss Bräcker C1ELudr10/0 traveler; in the spinning process, use double pressure rod upper pins. 4. The compact siro spinning process of modal, develvet acrylic fiber and graphene fiber as claimed in claim 1, wherein: the first plucking machine is the FA002A automatic plucking machine, and the first mixed opening machine is A035D Type mixed opener, the first cotton opener is FA106 type cotton opener, the first cotton feeder is A092 type cotton feeder, the first lapping machine is A076A type lapping machine, the pre-drawing machine is FA302 type parallel bar machine. 5. The compact siro spinning process of modal, develvet acrylic fiber and graphene fiber as claimed in claim 4, characterized in that: in the winding process, the QPRO60 type Murata automatic winding machine is equipped with Uster QUANTUM3 type electronic clearing machine. Yarn device; The electronic yarn clearing parameters of the winding process are: NSL1 is 240%*0.5cm, NSL2 is 150%*1.6cm, NSL3 is 85%*3.8cm, NSL4 is 55%*9.0cm, NSL5 is 28%*30.0cm, NSL6 17%*160.0cm, T1 is -38%*5.5cm, T2 is -25%*23.0cm, T3 is -16%*110.0cm, PF sensitivity is 30%, PF cycle number is 30, U is 60 %. 6. The compact siro spinning process of modal, develvet acrylic fiber and graphene fiber as claimed in claim 1, characterized in that: the second plucking machine is the FA002A automatic plucking machine, and the multi-bin cotton blending machine is the FA022 type Multi-bin cotton blending machine, the second opener is FA106A cotton opener, the second cotton feeder is A092A cotton feeder, the second lapper is A076A lapper, and the second carding machine is A186G comb Cotton machine; the drawing frame for the first merging is completed in the FA320A-G40 drawing frame, the second and third merging are respectively completed in a FA302 three-drawing frame, the roving frame is BHFA497 roving frame; the spinning frame is FA506 spinning frame; In order to prevent problems such as unsmooth drafting of sliver, lumpy yarn, knuckle-like soot and large difference in cvb between spindles in the spun yarn spinning process, strengthen the control of compact spinning and drafting parts to strictly prevent the occurrence of lumpy yarn defects; The enhanced control of compact spinning and drafting parts is to check whether the bell mouth is out of position, whether the pressure of the cradle is too small, whether the screws of the cradle are loose, whether the negative pressure pipe joint is falling off and leaking air, whether the suction groove of the special-shaped pipe cover plate is Hanging and clogging, whether the tension hook part is entangled, whether the grid ring is damaged, and whether the transmission gear has accumulated and missing teeth.