CN114836860B

CN114836860B - Production method of viscose high count vortex yarn

Info

Publication number: CN114836860B
Application number: CN202110135640.3A
Authority: CN
Inventors: 陈路; 陈克勤; 彭福建; 孙磊
Original assignee: Jiangsu Jingzheng Special Fiber Co ltd
Current assignee: Jiangsu Jingzheng Special Fiber Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2023-11-17
Anticipated expiration: 2041-02-01
Also published as: CN114836860A

Abstract

The invention provides a production method of viscose high count vortex yarn, which adopts a four-arm bale plucker and a cross-shaped fiber conveying pipeline on a cotton mixer to realize the impact action of the fiber driven by high air flow, realize flexible opening of large viscose fiber under the initial feeding, and effectively avoid the damage to the fiber caused by direct beating opening by a mechanical beater; the fiber layer output by the cotton mixer is simultaneously grabbed along different thicknesses by adopting an arc-shaped cotton grabbing curtain, so that an excellent mixing effect is realized; the carding machine comprising the carding roller pair is adopted to realize fine opening of viscose fiber clusters in a free state, so that damage to fibers in the traditional holding opening is reduced; the straightening effect of hooks in fiber strips is realized by converging and then drafting in the first two whole strips and setting corresponding drafting multiples, so that the drafting effect is improved; the production of the viscose high count vortex yarn of 60S and above is finally realized through the process and the large draft of the vortex spinning frame, and the added value of the product is effectively improved.

Description

Production method of viscose high count vortex yarn

Technical Field

The invention relates to the field of novel yarns, in particular to a production method of viscose high count vortex yarns.

Background

Vortex spinning, which is an improvement of the japanese murata corporation on the basis of jet spinning (MJS), was developed as a spinning device (MVS) suitable for spinning pure cotton. The spinning principle of vortex spinning is that the sliver after drawing is fed into the drawing device, the fiber bundle drawn by the roller drawing device is output from the front roller jaw, and enters the spinning nozzle along the spiral fiber guiding channel under the action of the axial airflow at the inlet of the spinning nozzle. The outlet of the spiral fiber guiding channel is provided with a needle-shaped twisting stop piece, and the fiber bundle is bent at the needle part, so that the fiber bundle is led into the vortex chamber in a state of not adding twist. The front end of the fiber bundle is pulled into a yarn channel in the spindle by the drag action of the formed yarn and twisted into the newly formed yarn to become a yarn core. The trailing end of the fiber remains in the fiber guide channel while being held by the front roller nip. When the tail end of the fiber is no longer held by the jaw of the front roller, the fiber is not kept in the fiber guiding channel under the centrifugal action of air vortex in the spinning nozzle, but is radially dispersed by the rotating airflow at the inlet of the spindle, and falls on the conical surface of the front end of the spindle under the driving of the air vortex, and simultaneously rotates along with the air vortex, is wound on the subsequent yarn and is output through the channel of the yarn in the spindle. The yarn formed consists of a yarn core formed by approximately parallel untwisted fibers and fibers spirally wrapped around the yarn core. The yarn which has been formed and output is removed from the yarn defect by the electronic yarn cleaner and wound onto a bobbin. The load received by the fibers themselves varies due to the difference in sum of residence time of the fibers in the nozzle and energy density of the injected air. Thus, the characteristics of the yarn also change. The softer the yarn at higher speeds, the stiffer the yarn at lower speeds. Vortex spinning has the characteristics of external hardness and internal softness. .

Compared with ring spinning, vortex spinning has the advantages of high speed, high yield, short process flow, high yield, simple operation, convenient joint and the like. Production practices have shown that vortex spinning also has certain limiting factors in the development process.

(1) The range of spinning materials suitable for vortex spinning is limited to short chemical fibers and medium-long fibers, and the competition capability in the field of fine yarns is not strong due to the quality of finished yarns.

(2) The yarn forming structure of the vortex spinning is relatively loose, the uniformity of long segments is good, the evenness of the formed yarn is generally close to the level of ring yarn, but the uneven thickness of the extremely short segments is more remarkable than that of the ring yarn, but the strength is lower and unstable, and the development of the yarn forming structure in the field of fine yarn is limited.

(3) The vortex spinning uses air vortex to replace rotor spinning, which overcomes the abrasion problem caused by rotor spinning high speed and the problem of overlarge bearing load, but can not solve the problem of larger centrifugal force and tension caused by yarn arm formed by the high speed rotation of free end yarn tail in vortex tube. And thus the spinning speed thereof is not likely to be progressed in a breakthrough manner.

(4) The spun yarn of vortex spinning is too short in coagulation process due to poor fiber straightening degree, so that the yarn structure is loose, the yarn strength is low, and therefore, the product is limited, and the spun yarn is only suitable for chemical fiber raw materials, products with low strength requirements such as spinning coarse knitting yarns or coarse napped yarns, or core spun yarns with filaments as yarn cores.

Nevertheless, vortex spinning, also with sliver feed direct yarn formation, has the conditions and possibilities to achieve a fully automated continuous production line. Because the roving frame, the spinning frame and the automatic winder are eliminated, the occupied area, the labor and the investment are reduced, the special advantage is achieved, and the ring yarn and the air current yarn are further replaced in the field of knitting yarns. Therefore, research and improvement are still needed to overcome the disadvantages and limitations of the spinning method, and the spinning method is a novel spinning method with characteristics.

Aiming at the problems, the application provides a production method of viscose high count vortex yarn, which selects 100 percent of viscose fibers with the thickness of 1.0dtex and 38mm, simultaneously grabs the selected fibers by a four-arm cotton grabbing machine, adopts a cotton grabbing device comprising a front trimming beater, a middle grabbing beater and a rear trimming beater to realize the two trimming opening actions before grabbing the viscose fibers in the grabbing process, thereby obviously improving the opening effect of the viscose fibers in the grabbing process, the viscose fibers grabbed by the middle grabbing beater on the four arms are converged at the inlet of a fiber conveying pipeline under the drive of high-speed airflow, four fiber flows are impacted and converged in the converging process, so that the fibers are further loosened, the fibers after being impacted and converged are conveyed to a front machine table through the fiber conveying pipeline, the four-arm cotton grabbing machine is simultaneously connected with a cotton mixing machine, the upper part of the cotton mixing machine adopts a cross-shaped fiber conveying pipeline which is connected in an intercommunicating manner, the fibers grabbed by the four-arm bale pluckers are respectively conveyed to the cotton mixer through respective fiber conveying pipelines, the conveyed viscose fibers are converged at the middle connection position of the cross-shaped fiber conveying pipelines, the mutual impact effect is generated again in the converging process, so that the fibers are further loosened, a rotary pipe with small holes on the circumference is arranged at the lower part of the middle connection position of the cross-shaped fiber conveying pipelines, the fibers entering the rotary pipe are driven to rotate along the inner wall of the rotary pipe under the action of air flow and by the rotary pipe, impurities in the fibers are thrown out under the action of centrifugal force in the rotating process, then the fibers enter each high cotton bin of the cotton mixer through the conveying pipelines, the fibers are output under the action of stripping rollers at the bottom of the high cotton bins after the fiber quantity reaches a certain height, the fibers after output are output after being bent pipes with different lengths, thereby realizing random mixing under different paths, the output viscose fiber layer is grabbed by an arc-shaped cotton grabbing curtain which is outwards bent towards the output side of the fiber layer, thereby realizing simultaneous grabbing of the cotton grabbing curtain on fibers in different thickness directions of the transversely paved fiber layer, then realizing mixing of the fibers in the fiber layer in the grabbing process, loosening and finishing the mixed fibers through a condenser to obtain uniform viscose fiber clusters, entering a high-speed carding machine, finely loosening the viscose fiber clusters in the carding machine in a free state, entering carding roller pairs which are placed up and down and rotate in the same direction, completely stripping the finely loosened viscose fiber clusters by a carding roller with large diameter which rotates in different directions with the carding roller pairs, driving the fibers to enter a part where the carding roller is close to a carding cover plate along with the rotation of the carding roller, decomposing the fiber clusters until the single fiber state is formed under the action of grabbing the fibers simultaneously, the fibers after carding are partly stripped by a small-diameter condensing roller and condensed into fiber webs, the fiber webs are converged into viscose fiber strips, 7 viscose fiber strips are converged through a horn mouth and then are tightly tidied into a drafting system of a first drawing frame, the drafting system adopts a large back area of more than 1.5 times for drafting, so that the fibers in the converged fiber strips kept in a tight state generate a motion speed difference between the head end and the tail end of the fibers in a certain time period in the process of changing speed in the back drafting area, then the front hooks at the head end of the fibers, namely the straightening of the rear hooks of the fed viscose fiber strips, obtain viscose fiber tidying strips, the 6 viscose fiber tidying strips are converged through the horn mouth and then are tightly tidied into a drafting system of a second drawing frame, the drafting system adopts the large back area of more than 1.3 times for drafting, the method is characterized in that the fiber in the converged fiber sliver in a tight state generates a motion speed difference between the fiber head end and the fiber tail end in a certain time period in the variable speed process in a rear drafting zone, then the front hook at the fiber head end, namely the front hook of the viscose fiber sliver during feeding, is straightened to obtain viscose fiber semi-finished sliver, 8 viscose fiber semi-finished sliver are jointly fed into a drafting system of a final drawing frame, the drafting system adopts over 9 times of large total drafting, each viscose fiber semi-finished sliver is respectively drafted and converged to obtain viscose fiber finished sliver with reduced linear density, the viscose fiber finished sliver is directly fed into a vortex spinning frame, and the required high count viscose yarn is obtained after the drafting and vortex wrapping of the vortex spinning frame.

According to the application, the impact action of viscose fibers driven by high air flow is realized by adopting the four-arm bale plucker and the cross-shaped fiber conveying pipeline on the corresponding mixing cotton machine, so that the fibers are loosened and loosened, the flexible loosening of large viscose fibers just under the beginning of feeding is realized, the damage to the fibers under the loosening is effectively avoided by directly beating by a mechanical beater, the viscose fiber layers output by the mixing cotton machine are simultaneously grabbed along different thicknesses by adopting the arc-shaped cotton grabbing curtains, the excellent mixing effect of the fibers is realized, the fine loosening of viscose fiber bundles fed into the carding machine in a free state is realized by adopting the carding machine comprising the carding roller pair, the damage to the fibers in the traditional holding loosening is reduced, the effective straightening effect of hooks of output fiber strips is realized by the arrangement of the first two drawing steps and the corresponding drafting multiple, the drafting effect is improved, the production of viscose high-count vortex yarn is finally realized by the large drafting of the spinning machine, and the additional value of the product is effectively improved.

Disclosure of Invention

The application aims to provide a production method of viscose high count vortex yarn, which realizes the impact action of viscose fiber driven by high air flow by adopting a four-arm bale plucker and a cross-shaped fiber conveying pipeline on a corresponding cotton mixer, so that the fiber is loosened and loosened, thereby realizing flexible loosening of large viscose fiber under the condition that feeding is just started, and effectively avoiding damage to the fiber under the condition that a mechanical beater directly strikes and loosens; the viscose fiber layer output by the cotton mixer is simultaneously grabbed along different thicknesses by adopting an arc-shaped cotton grabbing curtain, so that an excellent mixing effect of fibers is realized; the carding machine comprising the carding roller pair is adopted to realize the fine opening of viscose fiber clusters fed into the carding machine in a free state, so that the flexible fine opening of viscose fibers is realized, and the damage to the fibers in the traditional holding opening is reduced; through the first merging and then drafting in the first two drawing processes and the corresponding drafting multiple setting, the effective straightening effect of the hooks of the output fiber strips is realized, and the drafting effect is improved; the production of the viscose high count vortex yarn of 60S and above is finally realized through the process arrangement and the large draft of the vortex spinning frame, thereby effectively improving the added value of products.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a production method of viscose high count vortex yarn, selecting 100% Saidian viscose fiber with linear density of 1.0dtex and average length of 38mm, sequentially carding, carding and forming the selected viscose fiber to obtain the required viscose high count vortex yarn with linear density of more than 60s, simultaneously grabbing the selected viscose fiber by a four-arm plucker, adopting a plucker device comprising a front trimming beater, a middle trimming beater and a rear trimming beater in the grabbing process, realizing two trimming opening actions before grabbing the viscose fiber, thereby remarkably improving the opening effect on the viscose fiber in the grabbing process, merging the viscose fiber grabbed by the middle trimming beater at the inlet of a fiber conveying pipeline under the drive of high-speed airflow, generating impact merging by four fiber flows in the merging process, further loosening the fiber, conveying the fiber after impact merging to a front machine table through the fiber conveying pipeline, simultaneously connecting the four-arm pluckers with a mixer, adopting a cross-shaped fiber conveying pipeline, throwing the upper part of the mixer and the middle connecting with the four arms, respectively rotating the four arms under the inner walls of the conveying pipeline under the middle pipeline, leading the fiber to enter into the inner wall of the rotary pipe under the middle conveying pipeline to be further in the spinning process, leading the fiber to be in the inner wall of the rotary pipe to be further in the middle of the rotary mixing pipeline to be in the middle of the rotary mixing pipeline, thereby further flowing into the rotary mixing pipeline to be in the rotary mixing pipeline, the high-speed is formed, when the fiber quantity in the high cotton bin reaches a certain height, the fibers are output under the action of stripping rollers at the bottoms of the high cotton bin, the output fibers are output after passing through bent pipes with different lengths, so that random mixing under different paths is realized, the output viscose fiber layers are grabbed by arc-shaped cotton grabbing curtains which are outwards bent towards the output side of the fiber layers, the cotton grabbing curtains grab the fibers in different thickness directions of the transversely paved fiber layers, then the mixing of the fibers in the fiber layers is realized in the grabbing process, the mixed fibers flow through a condenser to be opened and finished to obtain uniform viscose fiber clusters and enter a high-speed carding machine, the viscose fiber clusters in the carding machine enter an opening roller pair which is placed up and down in a free state and rotates in the same direction to be finely opened, the viscose fiber bundles after fine opening are completely stripped by a large-diameter carding roller which rotates in different directions with the opening roller, along with the rotation of the carding roller, the fibers are driven to enter the part where the carding roller and the carding cover are abutted, the fiber bundles are decomposed under the action that the carding card clothing of the carding roller and the carding cover simultaneously grabs the fibers until the fibers are in a single fiber state, the fibers which finish carding are partly stripped by a small-diameter transfer doffer and are condensed into fiber webs, the fiber webs are converged into viscose fiber strips, 7 viscose fiber strips are converged through a horn mouth and then are tightly tidied into a drafting system of a head-channel whole strip machine, the drafting system adopts a large back area drafting of more than 1.5 times, so that the fibers in the converged fiber strips which keep the tight state generate a difference of movement speed of the fiber head end and the fiber tail end in a certain time period in the process of changing speed in the back drafting area, and then the front hook at the fiber head end, namely the viscose fiber strip after-hook during feeding is straightened to obtain the viscose fiber tidying strip, the 6 viscose fiber finishing strips are converged through a horn mouth and then are tightly finished and enter a drafting system of a two-channel whole strip machine, the drafting system adopts a large back zone of more than 1.35 times for drafting, so that the fibers in the converged fiber strips kept in a tight state generate a motion speed difference between a fiber head end and a fiber tail end in a certain time period in the variable speed process in the back drafting zone, then a front hook at the fiber head end, namely the front hook of the fed viscose fiber strips, is straightened to obtain viscose fiber semi-finished strips, 8 viscose fiber semi-finished strips are jointly fed into a drafting system of the final channel whole strip machine, the drafting system adopts a large total drafting of more than 9 times and a back zone of less than 1.35 times for drafting, the viscose fiber semi-finished strips are respectively drafted and then converged to obtain viscose fiber finished strips with reduced linear density, the viscose fiber finished strips are directly fed into a vortex spinning frame, and required high count viscose yarns are obtained after the viscose fiber semi-finished strips are drafted and vortex wrapped by the vortex spinning frame, and the method specifically comprises the following steps:

The first step: viscose fiber carding, namely picking cotton, mixing cotton, condensing cotton and carding the viscose fiber to prepare viscose fiber strips; in order to achieve the consistency of the performances of the fibers, 100% Saideli viscose fibers with the linear density of 1.0dtex and the average length of 38mm are selected as raw materials, the selected viscose fibers are firstly grabbed by a cotton grabbing machine, a four-arm cotton grabbing machine is selected in the cotton grabbing process, the four-arm cotton grabbing machine comprises four complete cotton grabbing arms, each cotton grabbing arm comprises a cotton grabbing connecting pipe and a cotton grabbing device, each cotton grabbing device comprises a front finishing beater, a middle grabbing beater and a rear finishing beater, the middle grabbing beater is in intercommunication connection with the cotton grabbing connecting pipes, the cotton grabbing connecting pipes of the four cotton grabbing arms are in equal-angle arrangement, each middle grabbing beater comprises a connecting tower, pressing strips which are arranged at equal intervals are arranged at the bottom of each connecting tower, two ends of each pressing strip are fixed on the inner side face of each connecting tower, cotton grabbing rollers are arranged in each connecting tower, cotton grabbing blades are arranged on each cotton grabbing roller, each cotton grabbing blade is arranged along the circumferential direction of each cotton grabbing roller, the cotton grabbing blades are arranged at equal intervals along the arrangement circumference of the cotton grabbing roller in the length direction, the cotton grabbing blades are arranged at different angles on one circumference of the cotton grabbing roller, so that the cotton grabbing blades fully cover the space in the arrangement circumference direction of the cotton grabbing roller, two ends of the cotton grabbing roller are connected with a connecting tower through bearings, the connecting tower is connected with the bottom end of a cotton grabbing connecting pipe in an intercommunication manner, the front finishing beater and the rear finishing beater are identical in structure, the front finishing beater comprises a first finishing roller and a second finishing roller which are arranged front and back, two ends of the first finishing roller and the second finishing roller are respectively connected with two fixing columns extending out of the connecting tower through bearings, finishing blades are respectively arranged on the first finishing roller and the second finishing roller, the finishing blades fully cover the space in the circumference direction of the first finishing roller and the second finishing roller along the circumference direction of the first finishing roller, the top ends of the four cotton grabbing connecting pipes are converged and are connected with the cotton grabbing fiber conveying pipes in an intercommunicating manner after the confluence, the cotton grabbing fiber conveying pipes are communicated with a cotton mixing machine in front, when the cotton grabbing arms are used, the selected viscose fibers are respectively discharged at the lower parts of the four cotton grabbing arms to form viscose fiber layers to be grabbed, when the cotton grabbing arms move forwards from back to front along the discharged viscose fiber layers to be grabbed, the finishing blades on the first finishing roller of the front finishing beater are directly in reverse contact with viscose fibers, so that the finishing blades on the first finishing roller are used for carrying out opening under the main striking action on the viscose fibers, the finishing blades on the second finishing roller are in forward contact with the viscose fibers, so that the finishing blades on the second finishing roller are used for carrying out opening under the auxiliary striking action on the viscose fibers, the viscose fibers to be grabbed become fluffy under the opening action on the viscose fiber layers to be grabbed by the second finishing roller, the opening action on the viscose fiber layers to be grabbed by the front, the finishing blades are connected with the viscose fibers to be grabbed by the front finishing roller, and the opening action on the viscose fibers to be grabbed by the front finishing roller is carried out under the action on the auxiliary striking action on the viscose fiber layer to be grabbed by the viscose fiber layer, the finishing blade on the first finishing roller is used for carrying out opening under auxiliary beating action on viscose fiber, the viscose fiber on the surface of a viscose fiber layer to be grabbed becomes fluffy under the opening action, the fluffy viscose fiber on the surface of the viscose fiber layer to be grabbed becomes fluffy under the auxiliary beating action on the viscose fiber by the finishing blade on the first finishing roller, the viscose fiber to be grabbed is grabbed by the finishing blade on the first finishing roller of the middle grabbing beater, the viscose fiber to be grabbed is mainly grabbed by the connecting tower under the action of negative pressure air flow, the finishing blade on the first finishing beater is used for carrying out opening under the main beating action on the viscose fiber by the finishing blade on the second finishing roller, the viscose fiber to be grabbed becomes fluffy under the opening action, the viscose fiber on the surface of the viscose fiber layer to be grabbed is made to be grabbed by the opening action, the rear and forward movement of the rear grabbing arm is carried out along the fiber layer to be grabbed, the finishing blade on the first finishing roller of the middle grabbing beater is used for grabbing the viscose fiber to be grabbed by the viscose fiber, the finishing blade is mainly grabbed by the viscose fiber to be grabbed by the auxiliary beating action on the connecting tower, the two finishing rollers are connected with each other under the effect of the auxiliary beating action on the viscose fiber layer to be grabbed by the smooth by the viscose fiber layer to be grabbed by the connecting tower under the auxiliary beating action on the middle layer to be grabbed by the viscose fiber is made by the lower down by the connecting tower to be grabbed by the lower down on the cotton layer to be grabbed by the lower down is connected with the lower layer to be smooth fiber to be grabbed by the lower down and smooth layer, the viscose fibers grabbed by the middle grabbing beater on the four grabbing arms are respectively conveyed upwards along the grabbing cotton connecting pipes under the drive of high-speed air flow, are converged at the inlets at the tops of the grabbing cotton connecting pipes, four viscose fiber flows conveyed in the converging process generate impact, and the viscose fiber flows are loosened in the impact process, so that the flexible opening effect of the flexible viscose fibers under the mutual striking is realized; the fiber after impact and confluence is conveyed into a front cotton mixing machine through a cotton grabbing fiber conveying pipe under the drive of air flow, four-arm cotton grabbing machines are simultaneously connected with one cotton mixing machine, a cross-shaped cotton mixing fiber conveying pipe which is connected with each other in the middle is arranged at the upper part of the cotton mixing machine, one end of the cross-shaped cotton mixing fiber conveying pipe is respectively communicated with the fiber output ends of the cotton grabbing fiber conveying pipes of the four-arm cotton grabbing machines, viscose fibers in the cotton mixing fiber conveying pipes are converged at the middle connecting part of the cross-shaped cotton mixing fiber conveying pipes, the mutual impact action occurs again in the confluence process, viscose fiber flows are released in the impact process, the secondary flexible opening effect of mutual impact between flexible viscose fibers is realized, a rotary pipe with adsorption holes is formed in the circumference at the lower part of the middle connecting part of the cross-shaped cotton mixing fiber conveying pipe, the viscose fibers after impact and confluence then enter the rotary pipe under the self gravity, the rotary pipe is driven by a motor to rotate at a high speed, part of the air flow in the rotary pipe flows along the adsorption holes, the viscose fiber flows down the rotary pipe are enabled to be adhered to the inner wall of the rotary pipe to the rotary pipe, the viscose fiber is enabled to be directly contacted with the rotary pipe under the action of the rotation force of the rotary pipe, the rotary effect is enabled to be completely removed, the impurity is completely, the impurity is removed under the effect of the suction effect is reduced, and the suction effect of the viscose fiber is completely falls down along the rotation hole along the rotary effect, and the rotation effect is completely, and the suction effect is removed down along the rotation effect of the rotation of the viscose fiber is made, then the viscose fiber is randomly sent into each high cotton bin of the cotton mixing machine through a cotton mixing fiber conveying main pipe, when the fiber quantity in each high cotton bin reaches a certain height, the fiber quantity is output under the action of stripping rollers at the bottom of each high cotton bin, the output fiber enters into an elbow pipe with different lengths, the outlet at the other end of the elbow pipe is vertically aligned up and down, the input viscose fiber is output from the outlet of the vertically aligned elbow pipe to obtain a viscose fiber layer of a transverse layering, thus realizing random mixing of the input viscose fiber under different paths, the outward side of the output viscose fiber layer is provided with a cotton grabbing curtain, the cotton grabbing curtain is respectively looped around an upper driving roller piece, a driving roller piece and a lower driving roller piece, so that the cotton grabbing curtain is of an arc structure protruding towards the outward side, and then realizing an annular connecting structure of the cotton grabbing curtain, the output viscose fiber layer contacts with the cotton grabbing curtain with a certain pressure, so that the cotton grabbing curtain between the driving roller piece and the lower driving roller piece contacts with the lower part of the middle thickness direction of the viscose fiber layer, then the viscose fiber below the middle thickness direction of the viscose fiber layer is grabbed gradually outwards from bottom to top, the cotton grabbing curtain on the driving roller piece contacts with the middle thickness direction of the viscose fiber layer, then the viscose fiber in the middle thickness direction of the viscose fiber layer is grabbed horizontally, the cotton grabbing curtain between the upper driving roller piece and the driving roller piece contacts with the upper part of the middle thickness direction of the viscose fiber layer, then the viscose fiber above the middle thickness direction of the viscose fiber layer is grabbed gradually inwards from bottom to top, and thus the cotton grabbing curtain grabs the viscose fiber in different thickness directions of the fiber layer of the transverse pavement, then, the mixing of fibers in the fiber layer is realized in the grabbing process, the mixed fibers are conveyed into the condenser through the corresponding fiber conveying pipe after flowing through the action of negative pressure air flow in the front machine condenser, and the viscose fibers in the condenser are subjected to opening arrangement to obtain uniform viscose fiber clusters and enter a high-speed carding machine through the corresponding fiber conveying pipe; the device comprises a free opening device, a fine carding device, a doffer condensing device and a gathering and slitting device, wherein the free opening device comprises a holding feeding device, the holding feeding device comprises an upper holding feeding roller and a lower holding feeding roller which are identical in structure, the upper holding feeding roller and the lower holding feeding roller comprise an intermediate shaft, a roller sleeve is connected on the intermediate shaft through a bearing, grooves with equal radian intervals are formed on the circumference of the roller sleeve along the length direction of the roller sleeve, an opening device is arranged at the front part of the feeding device, the opening device comprises an upper opening roller and a lower opening roller which are identical in structure, the upper opening roller and the lower opening roller comprise intermediate roller shafts, the upper opening roller is connected with an opening roller sleeve through a bearing, an opening needle cloth is arranged on the opening roller sleeve, the opening needle cloth of the upper opening roller is arranged on the opening roller sleeve through an implantation mode, the opening card clothing of the lower opening roller and the opening roller sleeve are obtained by adopting an integrated processing mode, the opening roller sleeves of the upper opening roller and the lower opening roller are both rotated anticlockwise, the fine carding device comprises a carding roller, the carding roller is positioned at the right front sides of the upper opening roller and the lower opening roller, the carding roller, the upper opening roller and the lower opening roller are respectively kept at mutually contacted parts, the carding roller is of a hollow cylindrical structure with a large diameter, the upper carding card clothing is arranged on the outward side of the circumference of the carding roller, the upper carding card clothing comprises a needle bottom, the needle bottom is made of soft elastic materials, the upper carding card clothing is implanted on the needle bottom, the carding card clothing is fixedly connected with the carding roller in a pasting mode, the bottom of the carding roller is provided with a fiber supporting device, the fiber supporting device comprises a supporting plate, the supporting plate is of an arc structure, the distances between the parts of the supporting plate and the carding roller are kept to be identical, the fiber falling notches are arranged at equal radian intervals along the radian direction of the supporting plate, the supporting plate is provided with supporting card clothing, the supporting card clothing and the supporting plate are obtained by adopting an integrated processing mode, a carding cover is arranged right above the carding roller, the carding cover comprises a left driving roller, a driving roller and a right driving roller, the driving roller is positioned right above the carding roller, the left driving roller is positioned at the left side of the driving roller, the right driving roller is positioned at the right side of the driving roller, the spacing among the left driving roller, the right driving roller, the driving roller and the carding roller is kept consistent, a first crawler belt and a second crawler belt are wound on the left driving roller, the driving roller and the right driving roller, the first crawler belt and the second crawler belt are made of soft elastic materials, the carding plate is arranged between the first crawler belt and the second crawler belt at equal intervals, the two ends of the carding plate are fixedly connected with the first crawler belt and the second crawler belt, the carding plate is provided with lower carding wires which are arranged according to a certain sequence, the lower carding wires and the carding plate are obtained by adopting an integrated processing mode, the first caterpillar band and the second caterpillar band are driven by a transmission mechanism to circularly rotate, then the carding plate is driven to circularly rotate, the carding roller and the carding plate both keep clockwise rotation, the doffer coagulation device comprises a transfer doffer, the transfer doffer comprises a transfer roller, the transfer roller is of a hollow and closed cylindrical structure, the transfer roller is positioned right in front of the carding roller, the transfer roller and the carding roller keep mutually contacted parts, the transfer roller is provided with transfer card clothing, the transfer card clothing comprises a card bottom, the card bottom is made of soft elastic materials, the transfer card clothing is implanted on the card bottom, the transfer card clothing is fixedly connected with the transfer roller in a pasting mode, the transfer roller is driven by the transmission mechanism to rotate in the same direction as the carding roller, the fiber stripping roller is arranged above one side of the transfer roller, which is in back to the carding roller, the front part of the fiber stripping roller is provided with a gathering bell mouth, the front part of the gathering bell mouth is provided with a pressing roller group, the pressing roller group comprises an upper pressing roller, a middle pressing roller and a lower pressing roller, the upper pressing roller, the middle pressing roller and the lower pressing roller are in mutually tight pressing contact, a winding component is arranged in front of the pressing roller group, the winding component comprises a winding shaft and a winding roller, the bottom end of the winding roller is additionally provided with a bottom cover, the bottom cover is fixed on a winding disc and driven by the winding disc to rotate, the winding shaft is driven by a corresponding transmission component to rotate in the same direction as the winding roller but different from each other and at different speeds, a holding top cover is connected on the bottom cover through a spring, when the viscose fiber bundle is fed by a holding feeding device, the upper holding feeding roller and the lower holding feeding roller hold the viscose fiber bundle at the moment and then actively feed the viscose fiber bundle, so that on one hand the pressing arrangement before the feeding of the viscose fiber is realized, simultaneously realizing uniform and stable feeding of the viscose fibers, after the fed viscose fiber clusters are completely separated from the holding, the viscose fiber clusters are fed between an upper opening roller and a lower opening roller, the opening needle cloth on the upper opening roller and the lower opening roller between the upper opening roller and the lower opening roller simultaneously apply a grabbing effect on the viscose fibers, then the viscose fibers are respectively transferred to the upper opening roller and the lower opening roller, the viscose fibers are separated from each other in the transferring process, then the opening effect on the viscose fibers is realized, the viscose fibers transferred to the upper opening roller and the lower opening roller are driven to the peripheral parts of the upper opening roller and the lower opening roller, which are abutted against the carding roller, along with the rotation of the upper opening roller and the lower opening roller, the driven viscose fibers are completely peeled by the upper carding needle cloth on the carding roller, then the viscose fibers are transferred from a free opening device to a fine carding device, the transferred viscose fiber rotates along with the rotation of the carding roller, when the viscose fiber rotates to the position between the carding roller and the carding cover, the upper carding needle of the carding roller and the lower carding needle of the carding cover simultaneously apply a grabbing action to the viscose fiber, then the viscose fiber is respectively transferred to the carding roller and the carding cover, the viscose fiber is mutually separated in the transferring process, then the opening action to the viscose fiber is realized, and the viscose fiber is kept in contact with a certain radian between the carding roller and the carding cover, so that the viscose fiber is repeatedly transferred back and forth between the carding roller and the carding cover, the viscose fiber is repeatedly subjected to a fine carding action to the viscose fiber, more than 50 percent of the viscose fiber in a viscose fiber cluster is in a single fiber state, and more than 99 percent of the viscose fiber is transferred to the carding roller at the tail end between the carding roller and the carding cover and is driven to rotate by the carding roller, and the doffer roller is transferred to the carding roller, the transfer roller is not subjected to the spinning along with the rotating of a supporting roller, and the diameter of the viscose fiber is not simultaneously held by the supporting roller, and the viscose fiber is simultaneously grabbed by the supporting roller when the viscose fiber is transferred to the supporting roller, simultaneously, the lower carding needle on the rotating carding roller and the supporting card clothing on the static supporting plate exert a mutual pulling-loosening acting force on the viscose fiber, so that the separation degree between the viscose fiber is further improved, impurities are separated from the package of the fiber in the fiber opening process, the impurities fall down along a fiber falling notch under the action of self gravity, a viscose fiber net condensed on a transfer doffer is then completely stripped by the stripping roller and then enters into a gathering horn mouth to be gathered into viscose fiber strips, the viscose fiber strips sequentially pass through the upper pressing roller of the pressing roller group and then enter between the upper pressing roller and the middle pressing roller, so that the viscose fiber strips are subjected to a primary pressing finishing effect between the upper pressing roller and the middle pressing roller and then enter between the lower pressing roller, so that the viscose fiber strips are subjected to a secondary pressing finishing effect between the middle pressing roller and the lower pressing roller, then a structurally stable viscose fiber strip is obtained, the viscose fiber strips are continuously wound on a supporting top cover of a winding drum after being controlled by the cooperative rotation of a winding shaft and the winding roller, and then the quantity of the viscose fiber strips wound is increased, and the supporting top cover is continuously pressed down, and finally, so that the viscose fiber strips are wound in the winding coverage rate is more than 90%;

And a second step of: the viscose fiber strips prepared in the first step are sequentially subjected to a first strip preparation, a second strip preparation and a third strip preparation to obtain viscose fiber cooked strips with improved linear density and uniformity respectively; the first sliver comprises a feeding device and a drafting device, the feeding device is positioned at the rear part of the drafting device, the feeding device comprises a sliver guiding frame and a converging horn, the quantity of the sliver guiding frame is consistent with that of the fed viscose slivers, the drafting device adopts the structure arrangement of four lower rollers and three upper rollers, the four lower rollers comprise a rear lower roller, a middle front lower roller and a front lower roller, the three upper rollers comprise a rear upper roller, a middle upper roller and a front upper roller, the rear upper roller is synchronously riding and pressing on the rear lower roller and the middle rear lower roller, the middle upper roller is pressing on the middle front lower roller, the front upper roller is pressing on the front lower roller, the rear lower roller and the middle rear lower roller rotate at the same speed, and a rear drafting zone of curve drafting is formed between the rear lower roller and the middle front lower roller, when in use, 7 viscose fiber strips are respectively converged by a converging horn after passing through respective sliver guide frames to realize tight arrangement to obtain converged fiber strips, the uniformity of the linear density of the converged fiber strips is improved due to the random combination of the thick and thin parts in each viscose fiber strip in the converging process, the converged fiber strips then enter a first integral drafting system, and the drafting system adopts a large rear area of more than 1.5 times for drafting, so that the movement speed difference of the fiber head end and the tail end is generated in a certain time period in the variable speed process of the fiber in the converged fiber strips in a tight state, and then the front hooks at the fiber head end, namely the straightening of the viscose fiber strip rear hooks during feeding, are straightened to obtain viscose fiber arrangement strips; the second sliver finishing comprises a feeding device and a drafting device, wherein the feeding device is positioned at the rear part of the drafting device, the feeding device comprises a sliver guide frame and a converging horn, the number of the sliver guide frame is consistent with that of fed viscose fiber finishing slivers, the drafting device adopts the structural arrangement of three lower rollers and three upper rubber rollers, the three lower rollers comprise a rear lower roller, a middle lower roller and a front lower roller, the three upper rubber rollers comprise a rear upper rubber roller, an upper rubber roller and a front upper rubber roller, the rear upper rubber roller is pressed on the rear lower roller, the upper rubber roller is pressed on the middle lower roller, the front upper rubber roller is pressed on the front lower roller, a rear drafting zone of linear drafting is formed between the rear lower roller and the middle lower roller, the front drafting zone of linear drafting is formed between the middle lower roller and the middle lower roller, when 6 viscose fiber finishing slivers are respectively converged by the respective sliver guide frames and then are tightly finished by the converging horn, in the converging process, the uniformity of the linear density of the finishing slivers is improved due to the random combination of the thick and thin parts in the various viscose fiber finishing slivers in the converging process, and then the front end of the drafting system is positioned in the front end of the drafting zone of the drafting system, so that the front end of the fiber finishing strip is in a certain speed of the front end of a fiber finishing zone is in a certain speed of a front-to be stretched fiber finishing zone, and a front end of a fiber finishing zone is in a drafting zone of a fiber finishing zone of a fiber spreading zone is formed, and a fiber spreading zone is formed in a drafting zone of a fiber spreading zone is formed, and a fiber spreading zone is a spreading zone is a fiber spreading a spreading speed is in a spreading zone is a spreading speed is formed; the third sliver comprises a feeding device and a drafting device, the feeding device comprises a rear sliver guide frame and a front convergence horn, the rear sliver guide frame is positioned at the rear part of the drafting device, the front convergence horn is positioned at the front part of the drafting device, the number of the sliver guide frames is kept consistent with that of the fed viscose fiber semi-finished sliver, the drafting device adopts the structure arrangement of three lower rollers and three upper rubber rollers, the three lower rollers comprise a rear lower roller, a middle lower roller and a front lower roller, the three upper rubber rollers comprise a rear upper rubber roller, a middle upper rubber roller and a front upper rubber roller, the rear upper rubber roller is pressed on the rear lower roller, the middle upper rubber roller is pressed on the middle lower rubber roller, the front upper rubber roller is pressed on the front lower rubber roller, a rear drafting zone of linear drafting is formed between the rear lower roller and the middle lower roller, 8 viscose fiber semi-finished sliver respectively enter a drafting system of the third sliver after passing through the respective sliver guide frame, the drafting system adopts a rear zone of 1.35 times or less, and the drafting system is arranged in the drafting system has a random drafting zone of the draft ratio of the total sliver to be equal to the viscose fiber in the drafting zone of the sliver, and the viscose fiber has a high-finished sliver density in the drafting zone of the viscose fiber which is formed by the independent and the continuous fiber in the drafting zone of the front sliver has a fine fiber wool to be reduced to the initial fiber sliver density;

And a third step of: the viscose fiber is spun, the viscose fiber sliver obtained in the second step is directly fed into a vortex spinning frame, and the required high-count viscose yarn is obtained after the viscose fiber sliver is drawn and vortex wrapped by the vortex spinning frame; the vortex spinning frame comprises a drafting system and a twisting system, wherein the drafting system comprises a main drafting system, a back drafting system and a supporting drafting system, the total drafting multiple of the drafting system is more than 300 times, the fed viscose fiber sliver is sequentially connected with a stretched yarn body under the non-twisting state, the viscose fiber sliver is obtained after the drafting action of the main drafting system, the straightness of the viscose fiber in the sliver is further improved through the non-synchronism of the fiber head end and the tail end in the sliding process between the fibers in the drafting process, the linear density of the fed viscose fiber sliver is reduced through the mutual sliding between the fibers, the output viscose fiber sliver is then fed into an vortex wrapping device, the front end of the fed viscose fiber sliver is subjected to the twisting resistance of the twisting resistance device, so that the head end of the fiber is directly connected with the stretched yarn body under the non-twisting state, the tail end of the fiber is still positioned at the core of the yarn body, the tail end of the viscose fiber is still under the holding action of the output of the drafting system, the tail end of the fiber is separated from the holding action of the drafting system and is wrapped on the inner side wall of the vortex wrapping device under the centrifugal force of the vortex wrapping device, the spun yarn is not broken, the spun yarn is high-spun into a yarn is high-quality yarn is not required, and the spun yarn is high-quality spun on the spun yarn is wrapped on the inner side of the vortex wrapping device, and the spun yarn is high-quality yarn is not required to be wrapped on the vortex yarn wrapping device, and the yarn is high-quality yarn is wrapped.

The utility model provides a through adopting four arm bale plucker and the cross fibre conveying line on the corresponding cotton mixer to realize the striking effect of viscose fibre under the high air current drive, then make the fibre produce loose and open, thereby realize just beginning the flexible opening of the big viscose fibre under the feeding, effectively avoided the mechanical beater to directly strike the damage of opening down to the fibre, through adopting the arc to grab cotton curtain along snatch on the different thickness to the viscose fibre layer of cotton mixer output, realize fibrous excellent mixing effect, through adopting the carding machine that includes carding roller pair, realize the meticulous opening of viscose fiber plexus under free state of feeding carding machine, thereby realize the meticulous opening of compliance to viscose fibre, reduce the tradition and hold the damage of opening in the fibre, through the setting of merging earlier in the first two drawing and then draft and corresponding draft multiple, realize the effective straight effect of the crotch to the fiber strip of output, then improve the draft effect, finally realize the production of viscose high count vortex yarn through the big draft of above-mentioned technology setting and spinning frame, thereby effectively improved the added value of product.

The specific embodiment is as follows:

Taking R80s as an example, controlling the workshop temperature to be 25-32 degrees and the humidity to be 61-68 percent, and selecting 100 percent of Sideli 1.0dtex as 38mm viscose as viscose fiber, wherein the specific production process is as follows: clearing:

carding cotton:

the whole strip is as follows:

spinning:

yarn quality:

stripe CVm	％	16.56
			CVb	％	1.95
Uster U	％	13.04
			Hairiness H	％	2.88
Details (-50%)	/km	135
			Thick knot (+50)	/km	125
Neps (+200%)	/km	59
			Average breaking strength	cN	100.4
Coefficient of variation of strength	％	10.8
			Maximum strength of	cN	119.9
Minimum strength of	cN	66.3
			Single yarn break strength	cN/tex	13.5
Elongation at break	％	5.3
			Coefficient of elongation variation	％	14.5

Claims

1. A production method of viscose high count vortex yarn, which selects 100% Saidide viscose fiber with linear density of 1.0dtex and average length of 38mm, and prepares the viscose high count vortex yarn with required linear density of more than 60s by carding, strip finishing and yarn forming sequentially, and is characterized in that: the selected viscose fiber is simultaneously grabbed by a four-arm grab machine, a cotton grabbing device comprising a front trimming beater, a middle grabbing beater and a rear trimming beater is adopted in the grabbing process to realize the twice trimming and opening effects before the viscose fiber is grabbed, so that the opening effect on the viscose fiber in the grabbing process is remarkably improved, the viscose fiber grabbed by the middle grabbing beater on the four arms is converged at the inlet of a fiber conveying pipeline under the drive of high-speed air flow, the four fiber flows are impacted and converged in the converging process, the fiber is further loosened, the fiber after the impact and the converging is conveyed to a front machine table through the fiber conveying pipeline, the four-arm grab machines are simultaneously connected with a cotton mixing machine, the upper part of the cotton mixing machine adopts a cross-shaped fiber conveying pipeline which is connected in an intercommunicating manner, the fiber grabbed by the four-arm grab machines is respectively conveyed to the cotton mixing machine through respective fiber conveying pipelines, the transported viscose fibers are converged at the middle joint of the cross-shaped fiber transportation pipeline, the mutual impact effect is generated again in the converging process, so that the fibers are further loosened, a rotating pipe with adsorption holes on the circumference is arranged at the lower part of the middle joint of the cross-shaped fiber transportation pipeline, the fibers entering the rotating pipe rotate along the inner wall of the rotating pipe under the action of air flow, the impurities in the fibers are thrown out under the action of centrifugal force in the rotating process, the fibers enter each high cotton bin of the cotton mixer through the transportation pipeline, when the fiber quantity in the high cotton bin reaches a certain height, the fibers are output under the action of stripping rollers at the bottom of each high cotton bin, the output fibers are output after being bent pipes with different lengths, so that random mixing under different paths is realized, the output viscose fiber layers are grasped by arc-shaped cotton grabbing curtains which are outwards bent towards the output side of the fiber layers, thereby realizing the simultaneous grabbing of the cotton grabbing curtain on the fibers in the different thickness directions of the transversely paved fiber layers, then realizing the mixing of the fibers in the fiber layers in the grabbing process, after the mixed fibers are opened and tidied by a condenser, obtaining uniform viscose fiber bundles, and entering a high-speed carding machine, after the viscose fiber bundles in the carding machine enter an opening roller pair which is arranged up and down in a free state and rotates in the same direction for fine opening, the finely opened viscose fiber bundles are completely stripped by a large-diameter carding roller which rotates in different directions with the opening roller pair, the fibers are driven to enter the position where the carding roller is abutted against a carding cover along with the rotation of the carding roller, the fiber bundles are decomposed until the fibers are in a single fiber state under the action of simultaneously grabbing the fibers by carding card clothing of the carding roller pair, the fibers after the carding are stripped by a small-diameter transfer doffer part and are condensed into a fiber web, the fiber web is converged into viscose fiber strips, 7 viscose fiber strips are converged through a horn mouth and then are tightly tidied into a drafting system of a first-pass sliver preparing machine, the drafting system adopts a large back zone of more than 1.5 times for drafting, so that the fibers in the converged fiber strips kept in a tight state generate a motion speed difference of a fiber head end and a fiber tail end in a certain time period in the process of changing speed in a back drafting zone, then a front hook positioned at the fiber head end, namely straightening of a fed viscose fiber strip back hook, is enabled to obtain viscose fiber tidying strips, 6 viscose fiber tidying strips are converged through the horn mouth and then are tightly tidied into a drafting system of a second-pass sliver preparing machine, the drafting system adopts a large back zone of more than 1.35 times for drafting, so that the fibers in the converged fiber strips kept in a tight state generate a motion speed difference of the fiber head end and the fiber tail end in a certain time period in the process of changing speed in the back drafting zone, and then straightening the front hooks at the fiber head ends, namely the front hooks of the viscose fiber strips during feeding to obtain viscose fiber semi-finished strips, enabling 8 viscose fiber semi-finished strips to enter a drawing system of a final-stage sliver finishing machine together, adopting over 9 times of large total drawing and 1.35 times and less rear-region drawing of the drawing system, respectively drawing and then converging the viscose fiber semi-finished strips to obtain viscose fiber finished strips with reduced linear density, directly feeding the viscose fiber finished strips into a vortex spinning frame, and obtaining the required high count viscose yarns after drawing and vortex wrapping of the vortex spinning frame.

2. The method for producing viscose high count vortex yarn according to claim 1, characterized in that: in the blowing and carding process, viscose fibers are sequentially subjected to cotton grabbing, cotton mixing, cotton condenser and cotton carding which are mutually communicated through pipelines to prepare viscose fiber strips; in order to achieve the consistency of the performances of the fibers, 100% Saideli viscose fibers with the linear density of 1.0dtex and the average length of 38mm are selected as raw materials, the selected viscose fibers are firstly grabbed by a cotton grabbing machine, a four-arm cotton grabbing machine is selected in the cotton grabbing process, the four-arm cotton grabbing machine comprises four identical cotton grabbing arms, each cotton grabbing arm comprises a cotton grabbing connecting pipe and a cotton grabbing device, each cotton grabbing device comprises a front trimming beater, a middle trimming beater and a rear trimming beater, the middle trimming beater is in intercommunication connection with the cotton grabbing connecting pipes, the cotton grabbing connecting pipes of the four cotton grabbing arms are in equal-angle arrangement, each middle trimming beater comprises a connecting tower, pressing strips which are arranged at equal intervals are arranged at the bottom of each connecting tower, two ends of each pressing strip are fixed on the inner side face of each connecting tower, cotton grabbing rollers are arranged in each connecting tower, cotton grabbing blades are arranged on each cotton grabbing roller, the cotton grabbing blades are distributed along the circumferential direction of the cotton grabbing rollers, the cotton grabbing blades are arranged at equal intervals along the arrangement circumference of the cotton grabbing roller in the length direction, the cotton grabbing blades are arranged at different angles on one circumference of the cotton grabbing roller, so that the cotton grabbing blades fully cover the space in the arrangement circumference direction of the cotton grabbing roller, two ends of the cotton grabbing roller are connected with a connecting tower through bearings, the connecting tower is connected with the bottom end of a cotton grabbing connecting pipe in an intercommunication manner, the front finishing beater and the rear finishing beater are identical in structure, the front finishing beater comprises a first finishing roller and a second finishing roller which are arranged front and back, two ends of the first finishing roller and the second finishing roller are respectively connected with two fixing columns extending out of the connecting tower through bearings, finishing blades are respectively arranged on the first finishing roller and the second finishing roller, the finishing blades fully cover the space in the circumference direction of the first finishing roller and the second finishing roller along the circumference direction of the first finishing roller, the top ends of the four cotton grabbing connecting pipes are converged and are connected with the cotton grabbing fiber conveying pipes in an intercommunicating manner after the confluence, the cotton grabbing fiber conveying pipes are communicated with a cotton mixing machine in front, when the cotton grabbing arms are used, the selected viscose fibers are respectively discharged at the lower parts of the four cotton grabbing arms to form viscose fiber layers to be grabbed, when the cotton grabbing arms move forwards from back to front along the discharged viscose fiber layers to be grabbed, the finishing blades on the first finishing roller of the front finishing beater are directly in reverse contact with viscose fibers, so that the finishing blades on the first finishing roller are used for carrying out opening under the main striking action on the viscose fibers, the finishing blades on the second finishing roller are in forward contact with the viscose fibers, so that the finishing blades on the second finishing roller are used for carrying out opening under the auxiliary striking action on the viscose fibers, the viscose fibers to be grabbed become fluffy under the opening action on the viscose fiber layers to be grabbed by the second finishing roller, the opening action on the viscose fiber layers to be grabbed by the front, the finishing blades are connected with the viscose fibers to be grabbed by the front finishing roller, and the opening action on the viscose fibers to be grabbed by the front finishing roller is carried out under the action on the auxiliary striking action on the viscose fiber layer to be grabbed by the viscose fiber layer, the finishing blade on the first finishing roller is used for carrying out opening under auxiliary beating action on viscose fiber, the viscose fiber on the surface of a viscose fiber layer to be grabbed becomes fluffy under the opening action, the fluffy viscose fiber on the surface of the viscose fiber layer to be grabbed becomes fluffy under the auxiliary beating action on the viscose fiber by the finishing blade on the first finishing roller, the viscose fiber to be grabbed is grabbed by the finishing blade on the first finishing roller of the middle grabbing beater, the viscose fiber to be grabbed is mainly grabbed by the connecting tower under the action of negative pressure air flow, the finishing blade on the first finishing beater is used for carrying out opening under the main beating action on the viscose fiber by the finishing blade on the second finishing roller, the viscose fiber to be grabbed becomes fluffy under the opening action, the viscose fiber on the surface of the viscose fiber layer to be grabbed is made to be grabbed by the opening action, the rear and forward movement of the rear grabbing arm is carried out along the fiber layer to be grabbed, the finishing blade on the first finishing roller of the middle grabbing beater is used for grabbing the viscose fiber to be grabbed by the viscose fiber, the finishing blade is mainly grabbed by the viscose fiber to be grabbed by the auxiliary beating action on the connecting tower, the two finishing rollers are connected with each other under the effect of the auxiliary beating action on the viscose fiber layer to be grabbed by the smooth by the viscose fiber layer to be grabbed by the connecting tower under the auxiliary beating action on the middle layer to be grabbed by the viscose fiber is made by the lower down by the connecting tower to be grabbed by the lower down on the cotton layer to be grabbed by the lower down is connected with the lower layer to be smooth fiber to be grabbed by the lower down and smooth layer, the viscose fibers grabbed by the middle grabbing beater on the four grabbing arms are respectively conveyed upwards along the grabbing cotton connecting pipes under the drive of high-speed air flow, are converged at the inlets at the tops of the grabbing cotton connecting pipes, four viscose fiber flows conveyed in the converging process generate impact, and the viscose fiber flows are loosened in the impact process, so that the flexible opening effect of the flexible viscose fibers under the mutual striking is realized; the fiber after impact and confluence is conveyed into a front cotton mixing machine through a cotton grabbing fiber conveying pipe under the drive of air flow, four-arm cotton grabbing machines are simultaneously connected with one cotton mixing machine, a cross-shaped cotton mixing fiber conveying pipe which is connected with each other in the middle is arranged at the upper part of the cotton mixing machine, one end of the cross-shaped cotton mixing fiber conveying pipe is respectively communicated with the fiber output ends of the cotton grabbing fiber conveying pipes of the four-arm cotton grabbing machines, viscose fibers in the cotton mixing fiber conveying pipes are converged at the middle connecting part of the cross-shaped cotton mixing fiber conveying pipes, the mutual impact action occurs again in the confluence process, viscose fiber flows are released in the impact process, the secondary flexible opening effect of mutual impact between flexible viscose fibers is realized, a rotary pipe with adsorption holes is formed in the circumference at the lower part of the middle connecting part of the cross-shaped cotton mixing fiber conveying pipe, the viscose fibers after impact and confluence then enter the rotary pipe under the self gravity, the rotary pipe is driven by a motor to rotate at a high speed, part of the air flow in the rotary pipe flows along the adsorption holes, the viscose fiber flows down the rotary pipe are enabled to be adhered to the inner wall of the rotary pipe to the rotary pipe, the viscose fiber is enabled to be directly contacted with the rotary pipe under the action of the rotation force of the rotary pipe, the rotary effect is enabled to be completely removed, the impurity is completely, the impurity is removed under the effect of the suction effect is reduced, and the suction effect of the viscose fiber is completely falls down along the rotation hole along the rotary effect, and the rotation effect is completely, and the suction effect is removed down along the rotation effect of the rotation of the viscose fiber is made, then the viscose fiber is randomly sent into each high cotton bin of the cotton mixing machine through a cotton mixing fiber conveying main pipe, when the fiber quantity in each high cotton bin reaches a certain height, the fiber quantity is output under the action of stripping rollers at the bottom of each high cotton bin, the output fiber enters into an elbow pipe with different lengths, the outlet at the other end of the elbow pipe is vertically aligned up and down, the input viscose fiber is output from the outlet of the vertically aligned elbow pipe to obtain a viscose fiber layer of a transverse layering, thus realizing random mixing of the input viscose fiber under different paths, the outward side of the output viscose fiber layer is provided with a cotton grabbing curtain, the cotton grabbing curtain is respectively looped around an upper driving roller piece, a driving roller piece and a lower driving roller piece, so that the cotton grabbing curtain is of an arc structure protruding towards the outward side, and then realizing an annular connecting structure of the cotton grabbing curtain, the output viscose fiber layer contacts with the cotton grabbing curtain with a certain pressure, so that the cotton grabbing curtain between the driving roller piece and the lower driving roller piece contacts with the lower part of the middle thickness direction of the viscose fiber layer, then the viscose fiber below the middle thickness direction of the viscose fiber layer is grabbed gradually outwards from bottom to top, the cotton grabbing curtain on the driving roller piece contacts with the middle thickness direction of the viscose fiber layer, then the viscose fiber in the middle thickness direction of the viscose fiber layer is grabbed horizontally, the cotton grabbing curtain between the upper driving roller piece and the driving roller piece contacts with the upper part of the middle thickness direction of the viscose fiber layer, then the viscose fiber above the middle thickness direction of the viscose fiber layer is grabbed gradually inwards from bottom to top, and thus the cotton grabbing curtain grabs the viscose fiber in different thickness directions of the fiber layer of the transverse pavement, then, the mixing of fibers in the fiber layer is realized in the grabbing process, the mixed fibers are conveyed into the condenser through the corresponding fiber conveying pipe after flowing through the action of negative pressure air flow in the front machine condenser, and the viscose fibers in the condenser are subjected to opening arrangement to obtain uniform viscose fiber clusters and enter a high-speed carding machine through the corresponding fiber conveying pipe; the device comprises a free opening device, a fine carding device, a doffer condensing device and a gathering and slitting device, wherein the free opening device comprises a holding feeding device, the holding feeding device comprises an upper holding feeding roller and a lower holding feeding roller which are identical in structure, the upper holding feeding roller and the lower holding feeding roller comprise an intermediate shaft, a roller sleeve is connected on the intermediate shaft through a bearing, grooves with equal radian intervals are formed on the circumference of the roller sleeve along the length direction of the roller sleeve, an opening device is arranged at the front part of the feeding device, the opening device comprises an upper opening roller and a lower opening roller which are identical in structure, the upper opening roller and the lower opening roller comprise intermediate roller shafts, the upper opening roller is connected with an opening roller sleeve through a bearing, an opening needle cloth is arranged on the opening roller sleeve, the opening needle cloth of the upper opening roller is arranged on the opening roller sleeve through an implantation mode, the opening card clothing of the lower opening roller and the opening roller sleeve are obtained by adopting an integrated processing mode, the opening roller sleeves of the upper opening roller and the lower opening roller are both rotated anticlockwise, the fine carding device comprises a carding roller, the carding roller is positioned at the right front sides of the upper opening roller and the lower opening roller, the carding roller, the upper opening roller and the lower opening roller are respectively kept at mutually contacted parts, the carding roller is of a hollow cylindrical structure with a large diameter, the upper carding card clothing is arranged on the outward side of the circumference of the carding roller, the upper carding card clothing comprises a needle bottom, the needle bottom is made of soft elastic materials, the upper carding card clothing is implanted on the needle bottom, the carding card clothing is fixedly connected with the carding roller in a pasting mode, the bottom of the carding roller is provided with a fiber supporting device, the fiber supporting device comprises a supporting plate, the supporting plate is of an arc structure, the distances between the parts of the supporting plate and the carding roller are kept to be identical, the fiber falling notches are arranged at equal radian intervals along the radian direction of the supporting plate, the supporting plate is provided with supporting card clothing, the supporting card clothing and the supporting plate are obtained by adopting an integrated processing mode, a carding cover is arranged right above the carding roller, the carding cover comprises a left driving roller, a driving roller and a right driving roller, the driving roller is positioned right above the carding roller, the left driving roller is positioned at the left side of the driving roller, the right driving roller is positioned at the right side of the driving roller, the spacing among the left driving roller, the right driving roller, the driving roller and the carding roller is kept consistent, a first crawler belt and a second crawler belt are wound on the left driving roller, the driving roller and the right driving roller, the first crawler belt and the second crawler belt are made of soft elastic materials, the carding plate is arranged between the first crawler belt and the second crawler belt at equal intervals, the two ends of the carding plate are fixedly connected with the first crawler belt and the second crawler belt, the carding plate is provided with lower carding wires which are arranged according to a certain sequence, the lower carding wires and the carding plate are obtained by adopting an integrated processing mode, the first caterpillar band and the second caterpillar band are driven by a transmission mechanism to circularly rotate, then the carding plate is driven to circularly rotate, the carding roller and the carding plate both keep clockwise rotation, the doffer coagulation device comprises a transfer doffer, the transfer doffer comprises a transfer roller, the transfer roller is of a hollow and closed cylindrical structure, the transfer roller is positioned right in front of the carding roller, the transfer roller and the carding roller keep mutually contacted parts, the transfer roller is provided with transfer card clothing, the transfer card clothing comprises a card bottom, the card bottom is made of soft elastic materials, the transfer card clothing is implanted on the card bottom, the transfer card clothing is fixedly connected with the transfer roller in a pasting mode, the transfer roller is driven by the transmission mechanism to rotate in the same direction as the carding roller, the fiber stripping roller is arranged above one side of the transfer roller, which is in back to the carding roller, the front part of the fiber stripping roller is provided with a gathering bell mouth, the front part of the gathering bell mouth is provided with a pressing roller group, the pressing roller group comprises an upper pressing roller, a middle pressing roller and a lower pressing roller, the upper pressing roller, the middle pressing roller and the lower pressing roller are in mutually tight pressing contact, a winding component is arranged in front of the pressing roller group, the winding component comprises a winding shaft and a winding roller, the bottom end of the winding roller is additionally provided with a bottom cover, the bottom cover is fixed on a winding disc and driven by the winding disc to rotate, the winding shaft is driven by a corresponding transmission component to rotate in the same direction as the winding roller but different from each other and at different speeds, a holding top cover is connected on the bottom cover through a spring, when the viscose fiber bundle is fed by a holding feeding device, the upper holding feeding roller and the lower holding feeding roller hold the viscose fiber bundle at the moment and then actively feed the viscose fiber bundle, so that on one hand the pressing arrangement before the feeding of the viscose fiber is realized, simultaneously realizing uniform and stable feeding of the viscose fibers, after the fed viscose fiber clusters are completely separated from the holding, the viscose fiber clusters are fed between an upper opening roller and a lower opening roller, the opening needle cloth on the upper opening roller and the lower opening roller between the upper opening roller and the lower opening roller simultaneously apply a grabbing effect on the viscose fibers, then the viscose fibers are respectively transferred to the upper opening roller and the lower opening roller, the viscose fibers are separated from each other in the transferring process, then the opening effect on the viscose fibers is realized, the viscose fibers transferred to the upper opening roller and the lower opening roller are driven to the peripheral parts of the upper opening roller and the lower opening roller, which are abutted against the carding roller, along with the rotation of the upper opening roller and the lower opening roller, the driven viscose fibers are completely peeled by the upper carding needle cloth on the carding roller, then the viscose fibers are transferred from a free opening device to a fine carding device, the transferred viscose fiber rotates along with the rotation of the carding roller, when the viscose fiber rotates to the position between the carding roller and the carding cover, the upper carding needle of the carding roller and the lower carding needle of the carding cover simultaneously apply a grabbing action to the viscose fiber, then the viscose fiber is respectively transferred to the carding roller and the carding cover, the viscose fiber is mutually separated in the transferring process, then the opening action to the viscose fiber is realized, and the viscose fiber is kept in contact with a certain radian between the carding roller and the carding cover, so that the viscose fiber is repeatedly transferred back and forth between the carding roller and the carding cover, the viscose fiber is repeatedly subjected to a fine carding action to the viscose fiber, more than 50 percent of the viscose fiber in a viscose fiber cluster is in a single fiber state, and more than 99 percent of the viscose fiber is transferred to the carding roller at the tail end between the carding roller and the carding cover and is driven to rotate by the carding roller, and the doffer roller is transferred to the carding roller, the transfer roller is not subjected to the spinning along with the rotating of a supporting roller, and the diameter of the viscose fiber is not simultaneously held by the supporting roller, and the viscose fiber is simultaneously grabbed by the supporting roller when the viscose fiber is transferred to the supporting roller, simultaneously, the lower carding needle on the rotating carding roller and the supporting card clothing on the static supporting plate exert a mutual pulling-loosening acting force on the viscose fiber, so that the separation degree between the viscose fiber is further improved, impurities are separated from the package of the fiber in the fiber opening process, the impurities fall down along a fiber falling notch under the action of self gravity, a viscose fiber net condensed on a transfer doffer is then completely stripped by a stripping roller and then enters into a gathering horn mouth to be gathered into viscose fiber strips, the viscose fiber strips sequentially pass through the upper pressing roller and the middle pressing roller of the pressing roller group and then enter between the upper pressing roller and the middle pressing roller, so that the viscose fiber strips are subjected to a secondary pressing-finishing action between the upper pressing roller and the middle pressing roller, then the viscose fiber strips are continuously wound on a supporting top cover of a winding drum after being controlled by the cooperative rotation of a winding shaft and the winding roller, and then the supporting top cover is continuously pressed down along with the increase of the quantity of the wound viscose fiber strips, and finally the stable winding coverage rate of the viscose fiber strips is realized by more than 90%.

3. The method for producing viscose high count vortex yarn according to claim 1, characterized in that: in the sliver finishing process, the viscose sliver obtained by blowing and carding sequentially passes through a first sliver finishing machine, a second sliver finishing machine and a third sliver finishing machine to obtain viscose cooked sliver with improved linear density and uniformity respectively; the head channel whole strip machine comprises a feeding device and a drafting device, wherein the feeding device is positioned at the rear part of the drafting device, the feeding device comprises a strip guide frame and a converging horn, the quantity of the strip guide frame is consistent with that of fed viscose strips, the drafting device adopts the structure arrangement of four lower rollers and three upper rollers, the four lower rollers comprise a rear lower roller, a middle front lower roller and a front lower roller, the three upper rollers comprise a rear upper roller, a middle upper roller and a front upper roller, the rear upper roller is synchronously riding and pressing on the rear lower roller and the middle rear lower roller, the middle upper roller is pressing on the middle front lower roller, the front upper roller is pressing on the front lower roller, the rear lower roller and the middle rear lower roller rotate at the same speed, and a rear drafting zone of curve drafting is formed between the rear lower roller and the middle front lower roller, when in use, 7 viscose fiber strips are converged by a converging horn respectively through respective sliver guide frames and then tightly arranged to obtain converged fiber strips, the uniformity of the linear density of the converged fiber strips is improved due to the random combination of the thick and thin parts in each viscose fiber strip in the converging process, the converged fiber strips then enter a drafting device of a head-channel whole-strip machine, and the drafting device adopts a large rear area of more than 1.5 times for drafting, so that the movement speed difference of the fiber head end and the tail end of the fiber in the converged fiber strips in a tight state is generated in a certain time period in the variable speed process of the rear drafting area, and then the front hooks at the fiber head end, namely the extension of the viscose fiber strip rear hooks during feeding, are straightened to obtain viscose fiber finished strips; the second whole strip machine comprises a feeding device and a drafting device, wherein the feeding device is positioned at the rear part of the drafting device, the feeding device comprises a sliver guide frame and a converging horn, the quantity of sliver guide frames is consistent with that of fed viscose fiber finishing strips, the drafting device adopts the structural arrangement of three lower rollers and three upper rollers, the three lower rollers comprise a rear lower roller, a middle lower roller and a front lower roller, the three upper rollers comprise a rear upper roller, an upper roller and a front upper roller, the rear upper roller is pressed on the rear lower roller, the upper roller is pressed on the middle lower roller, the front upper roller is pressed on the front lower roller, a rear drafting zone of linear drafting is formed between the rear lower roller and the middle lower roller, a front drafting zone of linear drafting is formed between the middle lower roller and the front lower roller, when in use, 6 viscose fiber finishing strips are respectively converged by respective sliver guide frames and then tightly finished by converging horns to obtain a converged fiber finishing strip, the uniformity of the linear density of the converged fiber finishing strip is improved due to the random combination of the thick and thin parts in each viscose fiber finishing strip in the converging process, the converged fiber finishing strip then enters a drafting device of a two-channel finishing machine, and the drafting device adopts a large rear area for drafting more than 1.35 times, so that the movement speed difference of the fiber head end and the tail end is generated in a certain time period in the process of changing speed in a rear drafting area of fibers in the converged fiber finishing strip in a tight state, and then the front hooks at the fiber head end, namely the front hooks of the viscose fiber strips during feeding, are straightened to obtain viscose fiber semi-finished strips; the three-channel whole strip machine comprises a feeding device and a drafting device, wherein the feeding device comprises a rear guide strip rack and a front convergence horn, the rear guide strip rack is positioned at the rear part of the drafting device, the front convergence horn is positioned at the front part of the drafting device, the quantity of the guide strip racks is consistent with that of the fed viscose fiber semi-finished strips, the drafting device adopts the structural arrangement of three lower rollers and three upper rollers, the three lower rollers comprise a rear lower roller, a middle lower roller and a front lower roller, the three upper rollers comprise a rear upper roller, a middle upper roller and a front upper roller, the rear upper roller is pressed on the rear lower roller, the middle upper roller is pressed on the middle lower roller, the front upper roller is pressed on the front lower roller, a rear drafting zone of linear drafting is formed between the rear lower roller and the middle lower roller, a front drafting zone of linear drafting is formed between the middle lower roller and the front lower roller, when the device is used, 8 viscose fiber semi-finished strips respectively enter a drafting device of a three-channel whole strip machine after passing through respective sliver guide frames, the drafting device adopts a back zone for drafting at a speed of 1.35 times or less, and the total drafting multiple of the drafting device is set to be larger than the quantity of fed viscose fiber semi-finished strips, so that each viscose fiber semi-finished strip is independently finished and drafted in the back drafting zone and is independently attenuated and drafted in the drafting zone to obtain viscose fiber strips, 8 viscose fiber strips are converged in a front convergence horn to obtain viscose fiber finished strips with linear density reduced than that of the initially fed viscose fiber strips, and the uniformity of the linear density of the viscose fiber finished strips is improved due to the random combination of thick and thin parts in each viscose fiber strip in the converging process.

4. The method for producing viscose high count vortex yarn according to claim 1, characterized in that: in the yarn forming process, directly feeding the viscose fiber cooked sliver obtained by sliver finishing into an vortex spinning frame, and obtaining the required high-count viscose yarn after drafting and vortex wrapping of the vortex spinning frame; the vortex spinning frame comprises a drafting system and a twisting system, wherein the drafting system comprises a main drafting system, a back drafting system and a supporting drafting system, the total drafting multiple of the drafting system is more than 300 times, the fed viscose fiber sliver is sequentially connected with a stretched yarn body under the non-twisting state, the viscose fiber sliver is obtained after the drafting action of the main drafting system, the straightness of the viscose fiber in the sliver is further improved through the non-synchronism of the fiber head end and the tail end in the sliding process between the fibers in the drafting process, the linear density of the fed viscose fiber sliver is reduced through the mutual sliding between the fibers, the output viscose fiber sliver is then fed into an vortex wrapping device, the front end of the fed viscose fiber sliver is subjected to the twisting resistance of the twisting resistance device, so that the head end of the fiber is directly connected with the stretched yarn body under the non-twisting state, the tail end of the fiber is still positioned at the core of the yarn body, the tail end of the viscose fiber is still under the holding action of the output of the drafting system, the tail end of the fiber is separated from the holding action of the drafting system and is wrapped on the inner side wall of the vortex wrapping device under the centrifugal force of the vortex wrapping device, the spun yarn is not broken, the spun yarn is high-spun into a yarn is high-quality yarn is not required, and the spun yarn is high-quality spun on the spun yarn is wrapped on the inner side of the vortex wrapping device, and the spun yarn is high-quality yarn is not required to be wrapped on the vortex yarn wrapping device, and the yarn is high-quality yarn is wrapped.