Disclosure of Invention
The technical problem to be solved is as follows: in order to overcome the defects of the prior art, annular twisting belts are respectively arranged at the front parts of front roller drafting pairs of all spindle positions of a front vehicle platform and a rear vehicle platform of a spinning machine, so that twisting action on viscose spun yarns at an initial twisting point is realized, the twist of a first twisting section and a spinning section is enhanced, the strength of the spun viscose yarns is greatly improved under the same twist, yarn hairiness is reduced, the production of viscose yarns with smooth surfaces is realized, and the silk-like effect of the spun viscose yarns is realized.
The technical scheme is as follows: the viscose simulation silk yarn production device comprises a drafting system and a winding system, wherein the drafting system comprises a rear drafting roller pair, a middle drafting roller pair and a front drafting roller pair, the rear drafting roller pair comprises a rear lower roller and a rear upper rubber roller, the middle drafting roller pair comprises a middle lower roller and a middle upper rubber roller, the front drafting roller pair comprises a front lower roller and a front upper rubber roller, the rear lower roller, the middle lower roller and the front lower roller respectively comprise a roller shaft, the roller shafts of the rear lower rollers of all spindle positions of a front vehicle table surface of a spinning machine are integrally and fixedly connected, the roller shafts of the middle lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the front lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the rear lower rollers of all spindle positions of a rear vehicle table surface of the spinning machine are integrally and fixedly connected, the roller shafts of the middle lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the front lower rollers of all spindle positions are integrally and fixedly connected, the outer circumference of the roller shaft is provided with a roller sleeve, the roller sleeve is fixedly connected with the roller shaft in an integrated manner, the right end of the roller shaft of the front lower roller is driven to rotate by a second motor, the right end of the roller shaft of the middle lower roller is in transmission connection with the right end of the roller shaft of the front lower roller through a first connecting gear set, the right end of the roller shaft of the rear lower roller is in transmission connection with the right end of the roller shaft of the middle lower roller through a second connecting gear set, the rear upper rubber roller, the middle upper rubber roller and the front upper rubber roller all comprise rubber roller shafts, one spindle position of the rear platform surface and one spindle position adjacent to the right side of the front platform surface of a spinning frame form a spindle position group, the rubber roller shafts of the rear upper rubber rollers on two spindle positions of one spindle position group are connected in an integrated manner, the rubber roller shafts of the middle upper rubber roller and the front upper rubber roller shaft of the front upper rubber roller are connected in an integrated manner, and the rear upper rubber roller, the middle upper rubber roller and the upper rubber roller shaft of each spindle position are connected in an integral manner, The outer circumference of a rubber roll shaft of the front sizing roll is sleeved with a rubber roll sleeve, the rubber roll sleeve is connected with the rubber roll shaft through respective intermediate bearings, the rubber roll sleeves independently rotate around the rubber roll shaft, the rubber roll shafts between the rubber roll sleeves of the rear sizing roll, the middle sizing roll and the front sizing roll of two spindle positions of one spindle position group are sequentially embedded into the rear embedding claw, the middle embedding claw and the front embedding claw of the pressurizing assembly from back to front, so that the installation of the rear sizing roll, the middle sizing roll and the front sizing roll on the pressurizing assembly is realized, the rear part of the pressurizing assembly is fixed on the platform surface of a spinning frame through a fixed shaft, the pressurizing assembly rotates along the fixed shaft, and the downward pressing of the rear sizing roll, the middle sizing roll and the front sizing roll under certain pressure is realized in the rotating process; the yarn guide device is arranged between the front roller drafting pair and the bobbin, the yarn guide device is annular, the yarn guide device is fixed on the table top of the spinning machine through a yarn guide rod, the front parts of the front drafting roller pairs of all spindle positions of the front table top and the rear table top of the spinning machine are respectively provided with a twisting belt which is completely the same, the inside of a hollow structure of the twisting belt is provided with a rubber magnetic strip, the left end and the right end of the front table top and the rear table top of the spinning machine are respectively provided with a left roller and a right roller, the left roller and the right roller are rollers with grooves on the surfaces, the left roller and the right roller are kept horizontal with the front table top or the rear table top of the spinning machine, the left roller is fixedly connected with the left end of the front table top or the rear table top of the spinning machine through a left connecting device, the right roller is fixedly connected with the right end of the front table top or the rear table top of the spinning machine through a right connecting device, the left connecting device and the right connecting device are the same in structure, the spinning frame comprises a connecting vertical rod and a connecting cross rod, wherein the top end of the connecting vertical rod is connected with the circle center part of a left roller or a right roller through a bearing, the bottom end of the connecting vertical rod is fixedly connected with the front end of the connecting cross rod, the rear end of the connecting cross rod is fixedly connected with the left end or the right end of a front vehicle table surface or a rear vehicle table surface of a spinning frame, the connecting cross rod of a left connecting device is driven by a third motor to extend or shorten, the connecting cross rod of a right connecting device is driven by a fourth motor to extend or shorten, the left roller is driven by a fifth motor to rotate, and the right roller is driven by a sixth motor to rotate; the winding system comprises a bobbin, the bobbin is embedded and mounted on a spindle, the spindle is driven to rotate by a first motor through a spindle belt in a unified mode, a fixed ring is arranged on the outer side of the bobbin in a surrounding mode and surrounds the middle lower portion of the bobbin, the ring is of a circular ring structure, an interval is reserved between the inner side circumference of the ring and the outer side circumference of the bobbin, the ring is fixed on a ring plate, the ring plate is fixed on the two sides of a spinning frame, a slide way is arranged on the ring, a steel wire ring is additionally arranged in the slide way, and the steel wire ring is spanned in the slide way of the ring.
Preferably, the rear bottom roller, the middle bottom roller and the front bottom roller have the same structure.
Preferably, the roller shaft is of solid cylindrical construction.
Preferably, the roller sleeve and the roller shaft are made of the same material and are made of iron or steel.
Preferably, the rubber roll shaft is made of iron materials and is of a solid cylindrical structure.
Preferably, the rubber roller sleeve is made of rubber.
Preferably, the length of the rubber roller cover is the same as the length of the roller cover.
Preferably, the cross section of the twisting belt is hollow cylindrical.
Preferably, the outer surface of the twisting belt is made of a material with certain friction, and the twisting belt is annular.
The spinning method of any one of the above artificial silk yarns comprises the following steps: when in use, the pressurizing assembly rotates along the fixed shaft under the action of force to realize the downward pressing of the pressurizing assembly, so that the rubber roller sleeve of the rear upper rubber roller of each spindle position is in tight press contact with the roller sleeve of the rear lower roller, the rubber roller sleeve of the upper middle rubber roller is in tight press contact with the roller sleeve of the middle lower roller, the rubber roller sleeve of the front upper rubber roller is in tight press contact with the roller sleeve of the front lower roller, the second motor drives the roller shaft of the front lower roller to rotate so as to drive the roller sleeve of the front lower roller which is integrally and fixedly connected with the roller shaft of the front lower roller to rotate, the roller shaft of the front lower roller rotates so as to drive the roller shaft of the middle lower roller to rotate so as to drive the roller sleeve of the middle lower roller which is integrally and fixedly connected with the roller shaft of the middle lower roller to rotate, then the rubber roll sleeve of the middle and upper rubber roll which is tightly pressed and contacted with the roller sleeve of the middle and lower rollers is driven to rotate, at the moment, a front drafting zone is formed between the front drafting roller pair and the middle drafting roller pair, the drafting multiple of the front drafting zone is equal to the gear ratio of the first connecting gear group, the roller shaft of the middle and lower rollers rotates and then drives the roller shaft of the rear and lower rollers to rotate through the second connecting gear group, then the roller sleeve of the rear and lower rollers which is fixedly connected with the roller shaft of the rear and lower rollers in an integrated manner is driven to rotate, then the rubber roll sleeve of the rear upper rubber roll which is tightly pressed and contacted with the roller sleeve of the rear and lower rollers is driven to rotate, at the moment, a rear drafting zone is formed between the middle drafting roller pair and the rear drafting roller pair, and the drafting multiple of the rear drafting zone is; the rear part of the rear drafting roller pair is additionally provided with a roving feeding bell mouth, the roving feeding bell mouth is aligned with a pressing jaw between a roller sleeve of a rear lower roller of the rear drafting roller pair and a rubber roller sleeve of a rear gluing roller, the same roving is respectively fed into a drafting system of the spindle position through the roving feeding bell mouth of each spindle position, the roving is pressed by the rear drafting roller pair after being fed into the bell mouth and then is pressed and output by a middle drafting roller pair, the roving is pressed and output by a rear drafting zone during the pressing and output by a front drafting roller pair, fiber strands are prepared during the drafting action of a front drafting zone, the fiber strands output by the drafting system of each spindle position enter a winding system of the spindle position, the twisting twist degree generated by the winding system is twisted into initial spun yarns at an initial twisting point, an initial triangular twisting zone is formed between a front jaw of the front drafting roller pair and the initial twisting point of the fiber strands output, the manufactured initial spun yarn sequentially passes through a yarn guide device and a steel wire ring of a winding system and is finally wound on a bobbin, at the moment, a first motor drives a spindle to rotate through a spindle belt, the bobbin is driven to rotate, the steel wire ring is driven to rotate along a slideway of a steel collar through the bypassed initial spun yarn, the rotating speed of the steel wire ring is smaller than the rotating speed of the bobbin due to the flexible structure of the initial spun yarn, the rotating speed difference of the steel wire ring and the bobbin generates twisting twist action on the initial spun yarn, the generated twisting twist is transmitted from bottom to top along the initial spun yarn, the initial spun yarn passes through a twisting belt at an initial twisting point, the twisting belt positioned on the front side of the initial spun yarn is a front side belt, the twisting belt positioned on the rear side of the initial spun yarn is a rear side belt, and a left roller and a right roller are kept horizontal with a front vehicle table top or a rear vehicle table top of a spinning frame, so that the front, the front side belt and the rear side belt are mutually attracted to clamp the initial spun yarn in the middle, so that twisting resistance is generated on the initial spun yarn, twisting resistance points are generated on the clamping points of the clamped initial spun yarn, the connecting cross rod of the left connecting device is driven to extend or shorten through a third motor, the connecting cross rod of the right connecting device is driven to synchronously extend or shorten through a fourth motor, so that yarn path bending angles of the spun yarns on two sides of the twisting resistance points are adjusted, the bending angles are larger than 90 degrees and smaller than or equal to 180 degrees, no bending is realized when the bending angles are 180 degrees, tension adjustment in yarn running is realized through adjustment of the bending angles, and a fifth motor drives a left roller to rotate, A sixth motor drives the right roller to synchronously rotate so as to drive the twisting belt to rotate, the twisting belt rotates so as to generate twisting twist on the initial spun yarn clamped under certain tension at the twisting-blocking point, the generated twisting twist is respectively transmitted upwards and downwards along the initial spun yarn, the twisting direction of the upper twisting twist transmitted upwards is opposite to that of the twisting twist generated by a winding system of a spinning frame by setting the rotating direction of the twisting belt, the twisting direction of the lower twisting twist transmitted downwards is the same as that of the winding system of the spinning frame, simultaneously, the upper twisting twist and the lower twisting twist are equal in size due to synchronous timeliness of transmission, and the twisting twist generated by the winding system of the spinning frame is completely blocked at the twisting-blocking point due to the complete twisting-blocking effect of the twisting-blocking point, so that the twisting twist cannot be transmitted to the upper portion of the twisting-blocking point, and therefore the strand in the upper portion of the twisting-blocking point is only subjected to the action of the upper twisting transmitted upwards, under the action of the upper twisting degree, the fiber strands output by the drafting system are pre-reversely twisted in a direction opposite to the twisting direction of the twisting degree, so that an initial twisting point moves upwards, the fiber strands are made into a first fiber bundle under the action of the pre-reverse twisting at a final twisting point after moving upwards, a final twisting triangular area is formed between a front jaw of a front drafting roller pair output by the fiber strands and the final twisting point, so that the final twisting triangular area is greatly reduced relative to the initial twisting triangular area, the strength of a first twisting section is effectively improved, the broken ends of the first twisting section are reduced, the lower twisting degree transmitted downwards is converged with the upper twisting degree transmitted from bottom to top, the twisting degree of a spinning section is greatly enhanced due to the consistent twisting directions of the two, after the first fiber bundle passes through a twisting belt, the upper twisting degree in the first fiber bundle is immediately offset with the lower twisting degree of the spinning section, the first fiber bundle is immediately and completely loosened after the original upper twisting twist of the first fiber bundle is completely offset, at the moment, the fibers in the first fiber bundle are temporarily in a mutually parallel state in a spiral state of mutual transfer wrapping under the action of the elastic resilience of the fibers due to the instant disappearance of the twist of the first fiber bundle, and then the fibers in the parallel state are immediately and repeatedly twisted by the twisting twist, so that the mutual transfer wrapping of the fibers in a parallel and vertical state is realized, the strength of the spun final spun yarn is greatly improved under the same twist, and the manufactured final spun yarn sequentially passes through a yarn guide device and a steel wire ring of a winding system and is finally continuously wound on a bobbin.
Has the advantages that: the viscose simulated silk yarn production device and the spinning method thereof respectively arrange the annular twisting belts at the front parts of the front roller drafting pairs of all spindle positions of the front vehicle platform and the rear vehicle platform of the spinning frame to realize the twisting action on the viscose spun yarns at the initial twisting point, thereby enhancing the twist degree of the first twisting section and the spinning section, greatly improving the strength of the spun viscose yarns under the same twist degree, reducing yarn hairiness, realizing the production of viscose yarns with smooth and clean surfaces and further realizing the silk-like effect of the spun viscose yarns.
Detailed Description
The following examples further illustrate the present invention but are not to be construed as limiting the invention. Modifications and substitutions to methods, procedures, or conditions of the invention may be made without departing from the spirit and substance of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
Example 1
As shown in fig. 1, the viscose artificial silk yarn production device comprises a drafting system and a winding system, wherein the drafting system comprises a rear drafting roller pair, a middle drafting roller pair and a front drafting roller pair, the rear drafting roller pair comprises a rear lower roller 1 and a rear upper gluing roller 2, the middle drafting roller pair comprises a middle lower roller 3 and a middle upper gluing roller 4, the front drafting roller pair comprises a front lower roller 5 and a front upper gluing roller 6, the rear lower roller 1, the middle lower roller 3 and the front lower roller 5 respectively comprise a roller shaft 7, the roller shafts 7 of the rear lower rollers 1 of all spindle positions of a front spinning frame table are integrally and fixedly connected, the roller shafts 7 of the middle lower rollers 3 of all spindle positions are integrally and fixedly connected, the roller shafts 7 of the rear lower rollers 1 of all spindle positions of a rear spinning frame table are integrally and fixedly connected, the roller shafts 7 of the middle lower rollers 3 of all spindle positions are integrally and fixedly connected, The roller shafts 7 of the front lower rollers 5 of all spindle positions are integrally and fixedly connected, the outer circumference of the roller shaft 7 is provided with a roller sleeve 8, the roller sleeve 8 is fixedly connected with the roller shaft 7 in an integrated manner, the right end of the roller shaft 7 of the front lower roller 5 is driven to rotate by a second motor 11, the right end of the roller shaft 7 of the middle lower roller 3 is in transmission connection with the right end of the roller shaft 7 of the front lower roller 5 by a first connecting gear set 12, the right end of the roller shaft 7 of the rear lower roller 1 is in transmission connection with the right end of the roller shaft 7 of the middle lower roller 3 by a second connecting gear set 13, the rear upper gluing roller 2, the middle upper gluing roller 4 and the front upper gluing roller 6 respectively comprise a gluing roller shaft 9, a spindle group is formed by one spindle position of a rear vehicle table top, one spindle position of the front vehicle table top and one spindle position adjacent to the right side, the gluing roller shafts 9 of the rear gluing roller 2 on two spindle positions of one spindle position group are integrally connected, The glue roller shafts 9 of the middle and upper glue rollers 4 are integrally connected, the glue roller shafts 9 of the front glue rollers 6 are integrally connected, the outer circumferences of the glue roller shafts 9 of the rear glue roller 2, the middle and upper glue rollers 4 and the front glue roller 6 of each spindle are sleeved with glue roller sleeves 10, the glue roller sleeves 10 are connected with the glue roller shafts 9 through respective intermediate bearings, the glue roller sleeves 10 rotate independently around the glue roller shafts 9, the glue roller shafts 9 between the glue roller sleeves 10 of the rear glue roller 2, the middle and upper glue rollers 4 and the front glue roller 6 of two spindles in one spindle group are sequentially embedded into the rear embedding grab, the middle embedding grab and the front embedding grab of the pressurizing assembly from back to front, the installation of the rear glue roller 2, the middle and upper glue rollers 4 and the front glue roller 6 on the pressurizing assembly is realized, the rear part of the pressurizing assembly is fixed on the platform surface of a spinning frame through a fixing shaft, the pressurizing assembly rotates along the fixing shaft, and the rear glue roller 2, the middle and upper glue roller 4 and the front glue roller 6 are realized in the rotating process, The upper middle rubber roller 4 and the front upper rubber roller 6 are pressed down under certain pressure; a yarn guide device 21 is arranged between a front roller drafting pair and a bobbin 24, the yarn guide device 21 is annular, the yarn guide device 21 is fixed on the table top of a spinning machine through a yarn guide rod, the front parts of the front drafting roller pairs at all spindle positions of the front table top and the rear table top of the spinning machine are respectively provided with a twisting belt 14 which are completely the same, a rubber magnetic strip is arranged inside the hollow structure of the twisting belt 14, the left end and the right end of the front table top and the rear table top of the spinning machine are respectively provided with a left roller 17 and a right roller 18, the left roller 17 and the right roller 18 are rollers with grooves on the surfaces, the left roller 17 and the right roller 18 are kept horizontal with the front table top or the rear table top of the spinning machine, the left roller 17 is fixedly connected with the left end of the front table top or the rear table top of the spinning machine through a left connecting device 19, the right roller 18 is fixedly connected with the right end of the front table top or the rear table top of the spinning machine through a right connecting device 20, the left connecting device 19 and the right connecting device 20 are identical in structure and comprise connecting vertical rods and connecting cross rods, the top ends of the connecting vertical rods are connected with the circle center parts of the left idler wheels 17 or the right idler wheels 18 through bearings, the bottom ends of the connecting vertical rods are fixedly connected with the front ends of the connecting cross rods, the rear ends of the connecting cross rods are fixedly connected with the left ends or the right ends of the front vehicle table board or the rear vehicle table board of the spinning frame, the connecting cross rods of the left connecting device 19 are driven by a third motor to extend or shorten, the connecting cross rods of the right connecting device 20 are driven by a fourth motor to extend or shorten, the left idler wheels 17 are driven by a fifth motor to rotate, and the right idler wheels 18 are driven by a sixth motor to rotate; the winding system comprises a bobbin 24, the bobbin 24 is embedded and mounted on a spindle, the spindle is driven to rotate by a first motor through a spindle belt in a unified mode, a fixed ring 23 surrounds the outer side of the bobbin 24, the ring 23 surrounds the middle lower portion of the bobbin 24, the ring 23 is of a circular ring structure, an interval is reserved between the inner side circumference of the ring 23 and the outer side circumference of the bobbin 24, the ring 23 is fixed on a ring plate, the ring plate is fixed on two sides of a spinning frame, a slide way is arranged on the ring 23, a steel wire ring 22 is additionally arranged in the slide way, and the steel wire ring 22 straddles in the slide way of the ring 23.
The rear lower roller 1, the middle lower roller 3 and the front lower roller 5 have the same structure.
The roller shaft 7 is a solid cylindrical structure.
The roller sleeve 8 and the roller shaft 7 are made of the same material and are made of iron or steel.
The rubber roll shaft 9 is made of iron and is of a solid cylindrical structure.
The rubber roller sleeve 10 is made of rubber.
The length of the rubber roller sleeve 10 is the same as the length of the roller sleeve 8.
The cross section of the twisting belt 14 is a hollow cylinder.
The outer surface of the twisting belt 14 is made of a material with certain friction, and the twisting belt 14 is annular.
The viscose fiber with the specification of 1.11dtex, the average length of 37.6mm, the actually measured titer of 1.08dtex, the breaking strength of 2.56cN/dtex and the elongation at break of 21.2 percent is adopted as a raw material, and the process flow is as follows:
the process flow comprises the following steps: FA002A type plucker → SFA035C type mixing opener → FA106C type porcupine opener → SFA161 type vibration feeder → a076F type lap former → a186D type carding machine → TMFD81 type drawing frame (head and end) → TMFD81L type self-leveling drawing frame (head and end) → TJFA458 type roving frame → FA507B type spinning frame
(1) Pretreatment of fibres
Viscose fiber wet strength is lower and is easy to release moisture, static phenomenon can appear in production, especially in the low-moisture environment in winter, rubber roll, rubber ring are easy to become hard and skid, cause the problem of winding rubber ring, rubber roll, roller, etc. Therefore, when the moisture regain of the viscose is lower than 10% and the relative humidity is lower than 52%, the viscose fiber needs to be subjected to antistatic treatment. A humidifier is specially installed above a FA002A type plucker disc, a special anti-static mixed water agent containing 2% -3% is added into a water tank, and the special anti-static mixed water agent is regularly and quantitatively sprayed along with the rotation of the plucker. By the measures, electrostatic aggregation of the fibers is avoided, and the electrostatic phenomenon is greatly reduced.
(2) Opening picking
The main process parameters of the opening and picking process are shown in table 1. According to the characteristics of fine fineness, good uniformity, less short staple and less impurities of viscose, the process flow is shortened as much as possible, and the process principle of low speed, beating instead of carding and soft carding is adopted. In order to reduce the striking force, avoid excessive fiber damage, properly reduce the speed of a beater and increase the distance between the beater and a dust rod. The cotton quantity in the cotton box machine cannot be excessive, otherwise, the cotton box is difficult to turn or the cotton box is turned more and more tightly, so that the cotton storage height of the cotton box is reduced to half of the original height, and the viscose fibers are prevented from excessively turning in the cotton box. Because the chemical fiber has no natural crimp, the cohesive force between the fibers is small, the rebound resilience is large, the fibers in the cotton layer are easy to disperse and separate, and the cotton layer is easy to adhere. In order to reduce the phenomenon of roll sticking, the quality of the lap is improved by adopting the measures of reducing the rotating speed of the lap roller and properly increasing the pressure of the lap.
TABLE 1 opening picking process Main Process parameters
(3) Cotton carding
The main process parameters of the carding process are shown in table 2. The technological principle of light weight, slow speed, tight spacing and less damage is adopted to improve the fiber transfer. After a plurality of tests, the cylinder card clothing with the model number of AC2530 multiplied by 1605P is selected, the capacity of grabbing and holding the fiber on an A186D type carding machine is strong, the carding effect on the fiber is obvious, and the neps can be effectively reduced. In order to avoid the phenomenon that fibers are wound on the licker-in, the linear speed ratio of the cylinder and the licker-in is adjusted to be larger. Properly reduce doffer speed, reduce the quantity of raw strips, ensure the sharpness of card clothing, enhance carding effect and improve fiber straightening degree. Because chemical fibers contain less impurities, the cover plate speed is properly reduced when the chemical fibers are spun in order to save raw materials. The distance between the licker-in and the cotton feeding plate is properly increased, and the damage of the licker-in rack to fibers is reduced. Meanwhile, the cotton feeding plate is properly lifted, the length of the carding process is increased, and the damage degree of the fibers is reduced to the minimum. The viscose fiber has smooth and full surface and relatively poor cohesive force between fibers, the space between a cylinder and a doffer is properly reduced to avoid cotton knots caused by repeated rolling and rubbing of the fibers, the fiber transfer rate is improved, the needle surface load of the cylinder is reduced, and conditions are created for adopting a small space between the cylinder and a cover plate.
TABLE 2 main technological parameters of carding process
(4) Drawing
The main process parameters of the drawing process are shown in table 3. In order to reduce the weight unevenness of cotton slivers, ensure the uniform distribution of fibers in finished yarns and improve the straightening degree of the fibers, the drawing process adopts the process principle of 'heavy pressurization and low speed'. The head is stretched by a larger draft multiple in the back region to straighten the hook fibers before the sliver. And a smaller back zone draft multiple is adopted to straighten the back hook fiber and improve the evenness of the yarn. The function of the auto-leveling device is fully exerted, and the long section uniformity of the cooked strips is improved. In the spinning process, the temperature and humidity have great influence on viscose fibers, in order to reduce the phenomena of roller winding and rubber rollers, the relative humidity is controlled to be 60-65%, the front roller guide rubber roller uses a nylon-66 anti-winding rubber roller, and the other rubber rollers are treated by anti-winding treatment-free type and two-component large-proportion coating, so that the rubber rollers are prevented from being wound and provided with flowers. Meanwhile, the speed of sliver discharging is properly reduced, the cotton sliver channel is kept smooth, the phenomena of blocking a horn mouth and coiling a sliver disk are avoided, and the quality of cooked slivers is ensured.
TABLE 3 drawing process Main Process parameters
(5) Rough yarn
The main process parameters of the roving are shown in table 4. The process principle of light weight, high twist, low speed, tight spacing and small tension is adopted, and the purpose is to reduce the drafting burden of the spun yarn. The viscose fiber has smooth surface and poor cohesion between fibers, properly increases the roving twist coefficient under the condition of ensuring that the spun yarn does not have hard ends, is beneficial to controlling the fibers by drafting in the rear area of the spun yarn, and reduces the deterioration of the resultant yarn evenness caused by accidental elongation of the roving. In order to increase the cohesive force between fibers, the winding density of the roving is properly increased, and the internal structure of the roving is improved. The WRC-975 winding-resistant treatment-free rubber roller is adopted, so that the phenomenon that the rubber roller is wound by static electricity is effectively reduced, and the level of the roving yarn evenness is improved.
Table 4 main process parameters of roving process
The false twister used on the original FA458 type suspended spindle roving frame adopts 6 convex teeth, so that the vibration of the yarn is large in the spinning process, and the CV value level of the roving yarn evenness is influenced. According to the situation, the false twister is correspondingly improved: the convex teeth of the false twister are changed from 6 convex teeth to 12 convex teeth, the front row and the rear row adopt different heights, and the guide angle of the roving in the rear row is reduced.
(6) Spun yarn
Under the same linear density condition, the total draft multiple is increased along with the increase of the yarn twist. After the twist is increased, the speed of a front roller of the spun yarn is properly reduced, the yarn breakage and yarn twisting are reduced, and the normal operation of the subsequent winding process is ensured. In order to reduce hairiness and broken ends of small yarns, the steel wire ring is selected slightly, so that the resultant yarn balloon is relatively stable, and meanwhile, in order to avoid the phenomenon of no opening of drafting, the distance between the jaws is selected slightly small. The pressure of the cradle should be controlled to be larger so as to meet the requirement that the minimum holding force is larger than the maximum stretching force. By continuous practice, the double-spindle pressing (front × middle × back) of the rubber roller is 150N × 110N × 130N, and a stable and good drafting environment is formed. In order to ensure uniform holding force, WRC-365 low-hardness high-elastic treatment-free rubber rollers are adopted. The rubber roller has excellent resilience and uniformity of circumferential hardness, has certain astringency on the surface, and enhances the holding force of the rubber roller. The smoothness and the burr-free performance of the ring track are ensured, the replacement period of the steel wire ring is shortened to 7 days, and the generation of hairiness is reduced. The strong twist yarn has larger twist, the uneven twist generated in the twisting process is also larger, even the weak twist yarn appears, which not only influences the single yarn strength, but also influences the cloth cover quality. For this reason, the work of selecting and managing tapes should be strengthened, and the tapes are periodically checked on a vehicle and by ingot. The problems are found and treated in time, the non-uniform twisting is reduced, and the weak twisted yarn is eliminated.
The spinning method of any one of the above artificial silk yarns comprises the following steps: when the device is used, the pressurizing assembly rotates along the fixed shaft under the action of force to realize the downward pressing of the pressurizing assembly, so that the rubber roller sleeve 10 of the rear upper rubber roller 2 at each spindle position is in tight press contact with the roller sleeve 8 of the rear lower roller 1, the rubber roller sleeve 10 of the upper middle rubber roller 4 is in tight press contact with the roller sleeve 8 of the middle lower roller 3, the rubber roller sleeve 10 of the front upper rubber roller 6 is in tight press contact with the roller sleeve 8 of the front lower roller 5, the second motor 11 drives the roller shaft 7 of the front lower roller 5 to rotate, then the roller sleeve 8 of the front lower roller 5 which is fixedly connected with the roller shaft 7 of the front lower roller 5 in an integrated manner is driven to rotate, then the rubber roller sleeve 10 of the front upper rubber roller 6 which is in tight press contact with the roller sleeve 8 of the front lower roller 5 is driven to rotate, the roller shaft 7 of the front lower roller 5 rotates, then the roller shaft 7 of the middle lower roller 3 is driven to rotate through the first connecting gear set 12, and then the roller sleeve 8 of the middle lower roller 3 which is fixedly connected with the roller shaft 7 in an integrated manner is driven to rotate Moving to drive the rubber roll sleeve 10 of the middle and upper rubber roll 4 which is tightly pressed and contacted with the roller roll sleeve 8 of the middle and lower roller 3 to rotate, forming a front drafting zone between the front drafting roller pair and the middle drafting roller pair at the moment, wherein the drafting multiple of the front drafting zone is equal to the gear ratio of the first connecting gear group 12, the roller roll shaft 7 of the middle and lower roller 3 rotates to drive the roller roll shaft 7 of the rear and lower roller 1 to rotate through the second connecting gear group 13, then driving the roller roll sleeve 8 of the rear and lower roller 1 which is fixedly connected with the roller roll shaft 7 of the rear and lower roller 1 to rotate, then driving the rubber roll sleeve 10 of the rear and upper rubber roll 2 which is tightly pressed and contacted with the roller roll sleeve 8 of the rear and lower roller 1 to rotate, forming a rear drafting zone between the middle drafting roller pair and the rear drafting roller pair at the moment, and the drafting multiple of the rear drafting zone is equal to the gear ratio of the second connecting gear group 13; a roving feeding bell mouth is additionally arranged at the rear part of the rear drafting roller pair, the roving feeding bell mouth is aligned with a pressing jaw between a roller sleeve 8 of a rear lower roller 1 of the rear drafting roller pair and a rubber roller sleeve 10 of a rear gluing roller 2, the same roving 25 is respectively fed into a drafting system of each spindle position through the roving feeding bell mouth, the roving 25 is pressed by the rear drafting roller pair after passing through the roving feeding bell mouth, then is pressed and output by a middle drafting roller pair, is subjected to the drafting action of a rear drafting zone during the pressing and output by a front drafting roller pair, is subjected to the drafting action of a front drafting zone during the pressing and output to prepare fiber strands, the fiber strands output by the drafting system of each spindle position enter a winding system of the spindle position, the twisting action of the twisting degree generated by the winding system is twisted into initial spun yarn at an initial twisting point, and an initial twisting triangular zone is formed between the front jaw of the front drafting roller pair output by the fiber strands and the initial twisting point, the manufactured initial spun yarn sequentially passes through a yarn guide device 21 and a steel wire ring 22 of a winding system and is finally wound on a bobbin 24, at the moment, a first motor drives a spindle to rotate through a spindle belt, the bobbin 24 is driven to rotate, the steel wire ring 22 is driven to rotate along a slide way of a steel collar 23 through the bypassed initial spun yarn, due to the flexible structure of the initial spun yarn, the rotating speed of the steel wire ring 22 is smaller than that of the bobbin 24, the rotating speed difference of the steel wire ring 22 and the bobbin 24 generates twisting twist action on the initial spun yarn, the generated twisting twist is transmitted from bottom to top along the initial spun yarn, at the moment, the initial spun yarn passes through a twisting belt 14 at an initial twisting point, the twisting belt 14 positioned at the front side of the initial spun yarn is taken as a twisting belt 16, the twisting belt 14 positioned at the rear side of the initial spun yarn is taken as a rear twisting belt 15, and as a left roller 17 and a right roller 18 are kept horizontal with the front or rear vehicle table surface of a spinning frame, therefore, the front side belt 16 and the rear side belt 15 are kept horizontal and kept horizontal with the front vehicle table surface or the rear vehicle table surface of the spinning frame, meanwhile, the rubber magnetic strips are arranged in the hollow structure of the twisting belt 14, so that the front side belt 16 and the rear side belt 15 are mutually attracted, the initial spun yarn is clamped between the two belts, the twisting resistance effect is generated on the initial spun yarn, a twisting resistance point is generated on the clamping point of the clamped initial spun yarn, at the moment, the third motor drives the connecting cross bar of the left connecting device 19 to extend or shorten, the fourth motor drives the connecting cross bar of the right connecting device 20 to synchronously extend or shorten, the adjustment of the yarn path bending angle of the spun yarn on the two sides of the twisting resistance point is realized, the bending angle is larger than 90 degrees and smaller than or equal to 180 degrees, no bending is shown when the bending angle is 180 degrees, the bending degree is increased along with the reduction of the bending angle, the tension adjustment in the running process of the yarn is realized through the adjustment of the bending angle, the fifth motor drives the left roller 17 to rotate, the sixth motor drives the right roller 18 to synchronously rotate, so as to drive the twisting belt 14 to rotate, the twisting belt 14 rotates to generate twisting twist on the initial spun yarn clamped under certain tension at the twisting-resistant point, simultaneously, the generated twisting twist is respectively transmitted upwards and downwards along the initial spun yarn, the rotating direction of the twisting belt 14 is set, so that the twisting direction of the upwards transmitted upper twisting twist is opposite to the twisting direction of the twisting twist generated by the winding system of the spinning machine, the twisting direction of the downwards transmitted lower twisting twist is the same as the twisting direction of the twisting twist generated by the winding system of the spinning machine, simultaneously, the upper twisting twist and the lower twisting twist are equal in size due to the synchronous transmission, and the twisting generated by the winding system of the spinning machine is completely prevented at the twisting-resistant point due to the complete twisting-resistant action of the twisting-resistant point, so that the twisting can not be transmitted to the upper portion of the twisting-resistant point, so that the fiber strands output by the drafting system are twisted in the reverse direction opposite to the twisting direction under the action of the upper twisting twist, the initial twisting point moves upwards, the fiber strands are twisted in the reverse direction under the action of the upper twisting twist, the first fiber bundle is produced at the final twisting point after the upward movement, a final twisting triangular area is formed between the front jaw of the front drafting roller pair output by the fiber strands and the final twisting point, the final twisting triangular area is greatly reduced relative to the initial twisting triangular area, the strength of the first twisting section is effectively improved, the broken ends of the first twisting section are reduced, the downward twisting twist transferred downwards is converged with the upward twisting twist transferred from bottom to top, the twisting direction of the two twisting sections is consistent, the twisting degree of the spinning section is greatly enhanced, and the first fiber bundle passes through the twisting belt 14, the upper twist in the first fiber bundle immediately offsets the lower twist in the spinning section, and then immediately twisted again by the twist, thereby producing the desired final spun yarn, the first fiber bundle is immediately and completely loosened after the original upper twisting twist of the first fiber bundle is completely offset, at the moment, the fibers in the first fiber bundle are temporarily in a mutually parallel state in a spiral state of mutual transfer wrapping under the action of the self elastic resilience because the twisting twist of the first fiber bundle disappears instantaneously, and then the fibers in the parallel state are immediately twisted again by the twisting twist, thus, mutual transfer and entanglement of the fibers in a parallel and vertical state are realized, the strength of the spun final spun yarn is greatly improved under the same twist, and the produced final spun yarn sequentially passes through the yarn guide device 21 and the steel wire ring 22 of the winding system and is finally continuously wound on the bobbin 24.