A method for preparing a silk yarn

Abstract

The present application relates to a kind of silk soft yarn preparation method.The present application is by the modification of cleaning and combing, protects fiber in the whole spinning process, reduces fiber damage, makes yarn have the characteristics such as basic evenness, strength etc., in spinning form using siro compact spinning in spinning, is equipped with low torque spinning device, so that yarn has soft, clean performance.Yarn made by the present application can be used for the fabric of children's wear and underwear, not only fabric soft, silky, good fit, comfortable to wear, but also does not shed, does not ball, clothing care is simple.The present application reduces short fiber on the basis of protecting fiber, makes the hairiness of yarn as low as possible, so in the cleaning process, by modification, skip six-roller cotton opener, combing modification cylinder, from 130 ° cylinder, change to 110 ° cylinder.In order to further reduce hairiness, while keeping yarn soft, in spinning process, on the basis of siro compact spinning, install low torque spinning device, ensure that yarn is soft, while get less hairiness effect.

Description

TECHNICAL FIELD

[0001] The present application relates to a method for preparing a silk soft yarn. BACKGROUND

[0002] In the current market fabric, the fabric for underwear and close-fitting clothes is generally low twist to maintain softness, but this brings the problem of large hairiness of the yarn, rough surface of the fabric, and easy pilling. With the development of society, people have higher requirements for the wearing performance of clothes, especially close-fitting clothes, which not only need to be moisture-absorbing and sweat-wicking, but also need to be soft, close-fitting, comfortable, and not pilling. To solve the above problems, we have long-term exploration and practice, and finally we improve the carding process in the cotton spinning process, reduce the damage of cotton fibers, use low twist and sirospun process in the spinning process, which not only reduces the twist of the yarn, but also gives the yarn softness, and greatly reduces the hairiness on the surface of the yarn, reduces the problem of fabric pilling, and gives the fabric a silky smooth performance. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a method for preparing a silk soft yarn.

[0004] The present application adopts the following process steps:

[0005] Step one: picking cotton

[0006] The whole bale of cotton is picked into large pieces of cotton, which enters the production line through the fan;

[0007] Step two: blending cotton

[0008] After the large pieces of cotton enter the production line, they are temporarily stored in the cotton box to ensure the continuous production of the production line, and at the same time, the horizontal curtain and the angle nail inclined curtain preliminarily mix the cotton during the operation of the machine;

[0009] Step two. (1): opening and removing impurities

[0010] The material of step two enters the six-roller opener, which opens the cotton through the beater, and then enters step three after opening.

[0011] Step three: blending cotton

[0012] The cotton is mixed according to the principle of time difference, that is, the cotton entering the blending machine at different times is in different bins, and the cotton entering different bins at different times flows into the next process at the same time to achieve the purpose of mixing;

[0013] Step four: opening and removing impurities

[0014] The main function is to change the cotton from large pieces into small pieces, while removing the impurities in the cotton. Through the rotation of the beater of the opener, the cotton is rotated, and under the action of centrifugal force, the lighter cotton is close to the rotation axis of the beater, while the heavier impurities are far away from the rotation axis of the beater. Under the action of the dust rod, the impurities far away from the rotation axis of the beater are stripped out, playing the roles of opening and removing impurities.

[0015] Step five: making into a roll

[0016] The scattered small cotton pieces are put into the roll maker to make the cotton roll with uniform left and right and front and back and a certain width.

[0017] Step six: carding, removing impurities, and making into a sliver

[0018] The cotton roll of the above step is put into the carding machine to card the cotton roll, so that the disordered fibers become straight, while the neps and impurities in the cotton roll are removed.

[0019] Step seven: making a roll from a sliver

[0020] The cotton sliver of the above step is put into the sliver roll machine to combine the carded sliver into a cotton roll with a certain width, eliminating the bent hook fibers.

[0021] Step eight: mixing

[0022] The cotton roll of the above step is put into the lapper to combine and draft several cotton rolls, so that the fibers are more straight, further eliminating the bent hook fibers and improving the evenness of the cotton roll.

[0023] Step nine: carding and removing short fibers

[0024] The mixed cotton roll is put into the combing machine for fine carding, removing the short fibers, small impurities, and large neps in the cotton roll, so that the fiber straightness is higher.

[0025] Step ten: mixing evenly

[0026] The carded cotton roll is put into the drawing frame to combine and draft multiple combed slivers, so that the slivers are more even.

[0027] Step eleven: drafting

[0028] The evenly mixed cotton sliver is put into the roving frame to draw and thin the sliver to a certain fineness and apply a certain twist, so that the roving is not easy to break, facilitating the use of the subsequent process.

[0029] The feature is step twelve: drafting and twisting

[0030] The material made by the above steps is drawn and thinned to the required unit weight by the spinning frame, and wound around the axis to rotate, applying a specified twist.

[0031] ①, adjust the speed of the false twist transmission motor to reduce the number of broken ends

[0032] The variable frequency number of the given false twister transmission motor of the low-torque spinning device is set as 1.2÷7.5 of the front roller speed, and the calculation basis is that the false twister rotates 7.5 turns by adjusting a variable frequency value, and the variable frequency number of the false twister transmission motor is 1.4÷7.5 of the front roller speed.

[0033] 2. Reduce hairiness,

[0034] Considering the condensation effect of the siro compact spinning on the fiber, when the negative pressure wind is increased to 2800pa, the cross section of the sliver is the smallest, so 2800pa negative pressure is selected, and in order to stretch the fiber, the tension draft between the front roller and the grid ring is increased from the original 0.967 to 1.055, the fiber is stretched better, and the hairiness is less.

[0035] A special device for silk soft yarn, characterized in that it comprises a picking machine, a cotton box, a six-roller opener, a multi-bin cotton blender, a porcupine opener, a lap former, a carding machine, a sliver lap former, a lap combining machine, a combing machine, a drawing frame, a spinning frame and a bobbin winder, characterized in that a gasket is installed between the friction wheel base and the support of the spinning frame.

[0036] The siro compact spinning of the spinning frame is additionally provided with a low-torque spinning device, the cross section of the suction flute pipe is changed from the original flat type to drop shape, and a suction flute pipe seat for fixing the suction flute pipe is additionally provided.

[0037] The upper spacing of the wear-resistant sheet of the spinning frame is 8mm, and the lower spacing is 2.5mm.

[0038] The positive effects of the present application are as follows:

[0039] The present application protects the fiber in the whole spinning process by reforming the scut and the combing, reduces the fiber damage, makes the yarn have the basic characteristics of evenness, strength and the like, adopts the siro compact spinning form in the spinning, additionally installs the low-torque spinning device, and makes the yarn have the performance of softness and smoothness.

[0040] On the basis of protecting the fiber, the present application reduces the short fiber, makes the hairiness of the yarn as low as possible, so in the scut process, the six-roller opener is skipped, the combing reform tin forest is changed from 130° tin forest to 110° tin forest. In order to further reduce the hairiness while keeping the yarn soft, the low-torque spinning device is additionally installed on the basis of the siro compact spinning, so that the yarn is soft and the hairiness effect is less. BRIEF DESCRIPTION OF DRAWINGS

[0041] ATTACHED Figure 1 is the working principle diagram of the present application. DETAILED DESCRIPTION

[0042] As shown in the accompanying drawings, the present application adopts the following process steps: Figure 1

[0043] Step one: picking

[0044] Put the whole bale of cotton into the picking machine, pick into large blocks of cotton, and pass through the fan into the production line;

[0045] Step two: mixing

[0046] After the large blocks of cotton enter the production line, they are temporarily stored in the cotton box, and the horizontal curtain and the angle nail inclined curtain preliminarily mix the cotton;

[0047] Step three: mixing

[0048] Mix the cotton of the previous step in the multi-bin mixing machine according to the time difference principle, that is, the cotton entering the mixing machine at different times is in different bins, and the cotton entering different bins at different times flows into the next process at the same time to achieve the purpose of mixing;

[0049] Step four: opening, removing impurities

[0050] Put the cotton into the porcupine opener, change it from large blocks to small blocks, and remove impurities in the cotton at the same time. Through the rotation of the hammer of the porcupine opener, the cotton is rotated, and under the action of centrifugal force, the lighter cotton is close to the rotating shaft of the hammer, while the heavier impurities are far away from the rotating shaft of the hammer. Under the action of the dust rod, the impurities far away from the rotating shaft of the hammer are stripped out;

[0051] Step five: making into a roll

[0052] Put the scattered small cotton blocks into the making roll machine to make the cotton roll uniform in width, left and right, and front and back;

[0053] Step six: carding, removing impurities, and making into a sliver

[0054] Put the cotton roll of the previous step into the carding machine to card the cotton roll, make the disordered fibers straight, and remove the neps and impurities in the cotton roll;

[0055] Step seven: making a roll from a sliver

[0056] Put the sliver of the previous step into the sliver roll machine to combine the carded sliver into a cotton roll with a certain width to eliminate the bent hook fibers;

[0057] Step eight: mixing

[0058] Put the cotton roll of the previous step into the combining and rolling machine to combine and draft several cotton rolls to make the fibers more straight, further eliminate the bent hook fibers, and improve the evenness of the cotton roll;

[0059] ​Step nine: carding, removing short fibers

[0060] The mixed lap is fed into the comber to card the lap and remove short fibers, small impurities and large neps from the lap, so that the fiber straightness is higher;

[0061] Step ten: mixing evenly

[0062] The carded sliver is fed into the drawing frame to combine and draft multiple carded slivers, so that the carded sliver is more uniform;

[0063] Step eleven: drafting

[0064] The evenly mixed sliver is fed into the roving frame to draw and thin the sliver to a certain fineness and apply a certain twist, so that the roving is not easy to break, and the subsequent process is convenient to use;

[0065] Step twelve: drafting and twisting

[0066] The roving is drawn and thinned to the required unit weight by the spinning frame, and is wound around the shaft to rotate and apply a specified twist;

[0067] Step thirteen: eliminating defects and winding

[0068] The yarn is wound onto a large package by the winder, and harmful defects on the yarn are removed;

[0069] Its characteristics are that the step twelve adopts the following steps,

[0070] ①Adjusting the speed of the false twist transmission motor

[0071] The low-torque spinning device sets the frequency number of the false twister transmission motor to be the front roller speed*1.2÷7.5, and the calculation basis is to adjust a frequency number value, and the false twister rotates 7.5 turns, and the frequency number of the false twist transmission motor is the front roller speed*1.4÷7.5;

[0072] The low-torque spinning device given false twister transmission motor variable frequency number setting is 1.2÷7.5 of the front roller speed of the spun yarn, and the formula is based on the adjustment of a variable frequency value, the motor changes the speed according to the frequency converter, the transmission ratio of the motor driving wheel and the false twister friction wheel is calculated, and the false twister friction wheel speed changes 7.5 turns. This is the process setting given by the manufacturer, but the phenomenon of frequent breakage occurs during production. After increasing or decreasing a variable frequency value, the actual friction wheel speed is not 7.5 turns after the motor speed is transmitted to the false twister friction wheel, but 5.5 turns. Further analysis shows that the 7.5 turns given by the manufacturer is a theoretical value. When the machine is actually rotating, the motor driving wheel and the false twister friction wheel are driven by the belt, and the transmission will be lost. When the false twister friction wheel rotates, it relies on its own weight to rub on the belt, and the transmission will be lost more. Therefore, when the process is designed according to the calculation formula provided by the manufacturer, the actual false twister speed will be lower than the designed speed. Therefore, the coefficient is adjusted from 1.2 to 1.4, and the actual speed measurement result is close to the process design. Therefore, the variable frequency number of the false twister transmission motor should be the front roller speed*1.4÷7.5 when the process is designed.

[0073] ①Increase the tension draft

[0074] In order to meet the condensation effect of the fiber on the siro compact spinning, the negative pressure wind is increased to 2800pa, and the tension draft between the front roller and the grid ring is increased. The tension between the front roller and the grid ring is changed from 0.967 times of the original equipment to 1.055 times.

[0075] According to the impurity of cotton,

[0076] Increase step two. (1): Opening, removing impurities

[0077] The material of step two enters the six-roller opener, and the six-roller opener opens the cotton through the beater. After opening, it enters step three.

[0078] The equipment used in the application includes a cotton grabbing machine, a cotton box, a six-roller opener, a multi-bin cotton mixer, a porcupine opener, a lap forming machine, a carding machine, a lap winding machine, a lap combining machine, a combing machine, a drawing frame, a spinning frame and a bobbin winder. A gasket is installed between the friction wheel base of the spinning frame and the support.

[0079] The siro compact spinning of the spinning frame is equipped with a low-torque spinning device, the cross section of the suction flute pipe is changed from the original flat type to the drop shape, and a suction flute pipe seat for fixing the suction flute pipe is added.

[0080] The upper spacing of the wear-resistant sheet of the spinning frame is 8mm, and the lower spacing is 2.5mm.

[0081] The application is characterized in that: the opening of the cotton mixing machine is connected with the pipe of the six-roller outlet through a tee joint, when the impurity content of the cotton is low, the inlet baffle of the six-roller is closed and the upper outlet of the cotton mixing machine is opened, so that the cotton flows through the beater of the cotton mixing machine and directly flows to the multiple bales through the pipe under the action of the multiple-bale cotton conveying fan, and the cotton no longer flows through the six-roller opener, thereby reducing the damage of the fibers.

[0082] On the basis of the existing siro compact spinning, a low-torque spinning device is additionally installed.

[0083] Part of the false twist part, the second is the false twist transmission part.

[0084] When installing, the false twist device of the spinning is installed first, the original machine leaf plate is removed first when the false twist device is installed, then the false twist part is installed, after installation, the three concentricities of the guide nozzle and the spindle are adjusted, after the installation is completed, the motor transmission part of the head and tail of the machine is installed, the belt is put into the guide roller after the belt is installed, and the trial run can be carried out by hanging the heavy hammer. The principle is that the yarn is firstly gathered by the siro compact spinning to reduce the cross section of the yarn, thereby reducing the hairiness, after the yarn is out of the mesh ring, the false twist device of the low-torque spinning device is used for twisting, the twist is generally larger than the yarn twist, after the false twist, the yarn twist is reduced (untwist) to the designed twist which is matched with the spindle speed, thereby realizing the characteristics of less hairiness and smoothness of the yarn with low twist.

[0085] Firstly, the traditional blowing production process is reformed, the pipe is installed on the cotton mixing machine, and the pipe is connected with the outlet pipe of the six-roller opener through a tee joint, so that whether the six-roller opener is skipped can be selected according to the impurity content of the raw material in the production process, thereby reducing the damage of the fibers. Secondly, on the combing machine, the E80 combing machine cylinder is improved, the E80 is equipped with a 130° cylinder, the fiber damage is large, the 110° cylinder is changed, the combing time is reduced, and the fiber damage is reduced. Finally, in the spinning process, the existing ordinary ring spinning machine is changed into the siro compact spinning form, so that the yarn has the characteristics of evenness, less hairiness and smoothness. However, such yarn is generally hard due to less hairiness, in order to solve the problem, the low-torque spinning device is equipped on the siro compact spinning machine, so that the yarn has the characteristics of evenness, smoothness and less hairiness of the siro compact spinning, and the spinning twist can be reduced, and the softness effect is achieved. Since the E80 combing machine currently has a 130° cylinder seat angle, the 110° cylinder cannot be directly installed, and therefore the cylinder seat needs to be replaced. When replacing, the 130° cylinder is first removed from the cylinder seat, then the cylinder seat is removed from the main shaft, the 110° cylinder seat is replaced, and when the 110° cylinder is installed, the distance between the cylinder and the lower edge of the nipper lip of the upper nipper plate is adjusted.

[0086] The complete process steps of the application are as follows:

[0087] A: grab cotton machine: the whole bale of cotton is grabbed into large pieces of cotton, and enters the production line through the fan.

[0088] B: Cotton box: After the bulk cotton enters the production line, it is temporarily stored in the cotton box to ensure the continuous production of the production line. Meanwhile, the horizontal curtain and the angle nail inclined curtain preliminarily mix the cotton while the machine is running.

[0089] C: Six-roller cotton opener: According to the amount of impurities in the cotton, the six-roller cotton opener can be selected for use. The beater of this machine has a damaging effect on the cotton, so it can be selected for use when the impurities are more, and not used when the impurities are less to protect the fibers. This machine opens the cotton through the beater to make the bulk cotton into small cotton blocks, while removing the larger impurities in the cotton.

[0090] D: Multi-bin cotton mixer: According to the time difference principle, the cotton entering the cotton mixer at different times is in different bins, and the cotton entering different bins at different times flows into the next process at the same time to achieve the purpose of mixing.

[0091] E: Porcupine cotton opener: Its main function is to change the bulk cotton into small blocks and remove the impurities in the cotton. Through the rotation of the beater of the cotton opener, the cotton is rotated, and under the action of centrifugal force, the lighter cotton is close to the rotation axis of the beater, while the heavier impurities are far away from the rotation axis of the beater. Under the action of the dust rod, the impurities far away from the rotation axis of the beater are stripped out, achieving the functions of opening and removing impurities.

[0092] F: Porcupine cotton opener: Its main function is the same as that of the E process, but it changes the small cotton blocks into smaller blocks and removes the impurities in the cotton. The principle is also the same as that of the E process.

[0093] G: Lap former: It makes the scattered small cotton blocks into cotton laps that are uniform in left and right, front and back, and have a certain width.

[0094] H: Carding machine: It cards the cotton lap to make the disordered fibers straight, while removing the neps and impurities in the cotton lap.

[0095] I: Sliver lap machine: It combines the carded slivers into cotton laps with a certain width to eliminate the bent hook fibers.

[0096] J: Lapper: It combines and drafts several cotton laps to make the fibers more straight and further eliminate the bent hook fibers to improve the evenness of the cotton lap.

[0097] K: Comber: It finely cards the cotton lap to remove the short fibers, small impurities, and large neps in the cotton lap, making the fibers have a higher straightness.

[0098] L: Drawing frame: It combines and drafts multiple combed slivers to make the slivers more uniform.

[0099] M: Roving frame: It draws and thins the slivers to a certain fineness and applies a certain twist to make the roving not easy to break, which is convenient for the use of the subsequent processes.

[0100] N: Spinning frame: the roving is drawn to the desired unit weight and wound on a rotating shaft with a specified twist.

[0101] O: Winder: the spun yarn is wound on a large package and harmful defects on the yarn are removed.

[0102] The main innovation is on the N spinning frame

[0103] 1. Improve the friction wheel of the false twister

[0104] Disadvantages: After the false twister friction wheel of the original vehicle is installed on the false twister support, the base of the friction wheel is recessed in the support, and the flying chips are easy to enter the gap between the friction wheel and the support with the rotation of the friction wheel, causing unsmooth operation and spun yarn breakage.

[0105] Advantages: By installing a gasket between the base of the friction wheel and the support, the base of the friction wheel is raised to be flush with the support, so that the flying chips are not easy to enter the gap between the friction wheel and the support, reducing spun yarn breakage.

[0106] 2. Improve the suction flute pipe

[0107] Disadvantages: After the low-torque spinning device is added to the compact spinning, the false twister is higher than the ordinary leaf plate, and when the false twister is turned over during doffing, it cannot be completely turned over and cannot be doffed when it hits the suction flute pipe.

[0108] Advantages: By communicating with the supplier, the cross-section of the suction flute pipe is changed from the original flat type to a water drop shape, reducing the space occupation of the suction flute pipe and increasing the distance between the suction flute pipe and the false twister, so that the false twister can be normally turned over.

[0109] 3. Process the suction flute pipe seat

[0110] Disadvantages: After improving the suction flute pipe, the suction flute pipe plug changes, so it cannot be installed on the original suction flute pipe seat,

[0111] Advantages: According to the shape of the improved suction flute pipe plug and the position on the existing machine, a suction flute pipe seat is self-made, which can fix the suction flute pipe after installation.

[0112] 4. Optimize the shape of the wear-resistant sheet

[0113] Disadvantages: The opening of the wear-resistant sheet of the compact spinning spinning frame is currently 1.4mm, with a distance of 6 above and 3 below. When spinning ultra-soft yarn, the existing wear-resistant sheet has more breakage due to low spun yarn twist,

[0114] Advantages: the distance between the wear-resistant pieces is preferably changed from 6 above and 3 below to 8 above and 2.5 below, and the opening is 1.4 mm. Design idea: since the low-torque yarn of the Sirospun has low twist and many broken ends in spinning, the fiber should be stable and the running should be smooth during drafting, and the distance between the output slivers is small, so that the broken ends are reduced. At the same time, since the opening of the horn used on the machine is 8 mm, the opening of the wear-resistant piece on the top is also selected to be 8 mm, so that the sliver is in parallel state in the whole drafting zone; when the distance between the wear-resistant pieces is 3, the distance between the output slivers from the delivery roller is too large, which is easy to break, so that the distance is reduced to 2.5 mm, and the distance between the output slivers is reduced, and the broken ends are reduced.

[0115] The process innovation points are on the N spinning machine:

[0116] The process innovation point is to produce less broken ends around low twist and less hair:

[0117] First of all, the life is good, and the broken ends are less. The new wear-resistant piece has been designed for the equipment and accessories, which reduces the distance between the output slivers and reduces the broken ends.

[0118] The process is to adjust the speed of the false twist transmission motor. The given frequency number of the false twister transmission motor of the low-torque spinning device is the front roller speed*1.2÷7.5, and the calculation basis is to adjust a frequency number of the false twister to rotate 7.5 times. It is no problem for ordinary ring spinning, but for Sirospinning, since the twisting efficiency is low, the speed of the false twister should be fast,

[0119] After many tests, the frequency number of the false twist transmission motor is the front roller speed*1.4÷7.5, which is the best effect and the least broken ends.

[0120] Secondly, reduce the hair, considering the condensation effect of Sirospinning on fiber, increase the negative pressure to 2800 pa, the cross section of the sliver is the smallest, so select 2800 pa negative pressure, and in order to straighten the fiber, increase the tension between the front roller and the grid ring from the original 0.967 to 1.055, the fiber is straightened better, and the hair is less.

Claims

1. A method for preparing a silk soft yarn, which adopts the following process steps: Step one: picking cotton Put the whole bale of cotton into the picking machine to pick large pieces of cotton, which are then sent to the production line through the fan; Step two: blending cotton After the large pieces of cotton enter the production line, they are temporarily stored in the cotton box, and the horizontal curtain and the angle nail inclined curtain preliminarily mix the cotton; Step three: blending cotton The cotton from the previous step is mixed in the multi-bin blending machine according to the time difference principle, that is, the cotton entering the blending machine at different times is in different bins, and the cotton entering different bins at different times flows into the next process at the same time to achieve the purpose of mixing; Step four: opening and removing impurities The cotton enters the porcupine opener, which changes the large pieces of cotton into small pieces and removes impurities in the cotton. When the beater rotates, it drives the cotton to rotate. Under the action of centrifugal force, the lighter cotton is close to the rotating shaft of the beater, while the heavier impurities are far away from the rotating shaft of the beater. The impurities far away from the rotating shaft of the beater are stripped off under the action of the dust bar; Step five: making a roll The scattered small cotton pieces enter the lap former to make a cotton roll that is uniform in left and right, front and back, and has a width; Step six: carding, removing impurities, and making a sliver The cotton roll from the previous step enters the carding machine to card the cotton roll, making the disordered fibers straight and removing the neps and impurities in the cotton roll; Step seven: making a roll from a sliver The sliver from the previous step enters the lap former to combine the carded sliver into a cotton roll with a certain width, eliminating the bent fibers; Step eight: blending The cotton roll from the previous step enters the lap former to combine and draft several cotton rolls, making the fibers more straight, further eliminating the bent fibers, and improving the evenness of the cotton roll; Step nine: carding and removing short fibers The blended cotton roll enters the combing machine to finely card the cotton roll, removing the short fibers, small impurities, and large neps in the cotton roll, and making the fibers more straight; Step ten: blending evenly The carded sliver enters the drawing frame to combine and draft multiple combed slivers, making the combed sliver more even; Step eleven: drafting The evenly blended sliver enters the roving frame to draw and thin the sliver to a certain fineness and apply a certain twist, making the roving not easy to break, which is convenient for the subsequent process; Step twelve: drafting and twisting The roving is drawn and thinned to the required unit weight by the spinning frame, and is wound around the shaft to rotate, applying a specified twist; Step thirteen: eliminating defects and winding The yarn is wound onto a large package by the winder, and harmful defects on the yarn are removed; The method is characterized in that: Step twelve is adjusted as follows: based on the existing siro compact spinning, a low-torque spinning device is installed, and the following improvements are made: (1) Adjusting the speed of the false twist transmission motor When the actual machine rotates, the transmission between the motor driving wheel and the false twist friction wheel is belt transmission, which will have a loss of rotation. When the false twist friction wheel rotates, it relies on its own weight to rub on the belt, and the loss of rotation will be more. Therefore, when designing the process according to the calculation formula provided by the manufacturer, the actual speed of the false twist will be lower than the designed speed. Therefore, the coefficient is adjusted from 1.2 to 1.4, and the actual speed measurement result is close to the process design. Therefore, when designing the process, the frequency number of the false twist transmission motor should be the front roller speed * 1.4 ÷ 7.5; (2) Increasing the tension draft In order to meet the condensation effect of fiber of siro compact spinning, the negative pressure wind is increased to 2800pa, the tension draft between the front roller and the grid ring is increased, and the tension between the front roller and the grid ring is changed from 0.967 times of the original equipment to 1.055 times; (3) Improve the friction wheel of false twist A gasket is installed between the friction wheel base and the support, the friction wheel base is raised, the base is flush with the support, and the flying particles are prevented from invading; (4) Improve the suction cotton flute pipe The cross section of the suction cotton flute pipe is changed from the original flat type to the water drop shape, and the suction cotton flute pipe seat is configured for the improved suction cotton flute pipe; (5) Optimize the shape of wear-resistant sheet The upper spacing of the wear-resistant sheet is 8mm, and the lower spacing is 2.5mm.

2. A method of making a silk filament according to claim 1, wherein: According to the impurity condition of cotton, openning and impurity removal are added after step two, The material of step two enters the six-roller cotton opener, the six-roller cotton opener opens the cotton through the beater, and then enters step three.

Images