CN109680381B

CN109680381B - Double-filament interlaced core-spun yarn production device and production method

Info

Publication number: CN109680381B
Application number: CN201910119683.5A
Authority: CN
Inventors: 张娣
Original assignee: Huangshan Tianma Textile Co ltd
Current assignee: Huangshan Tianma Technology Co ltd
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2021-05-28
Anticipated expiration: 2039-02-18
Also published as: CN109680381A

Abstract

The invention provides a double-filament interlacing covering yarn production device and a production method, wherein a numerical control core filament feeding device which is arranged in parallel at the left and the right is arranged above a drafting system, two different filaments which are actively output by a thread guide roller pair driven by a servo motor enter a twist wheel together, a thread leading roller pair is arranged at the lower part of the twist wheel, the twist wheel is driven by the motor to rotate axially, the twisting and interlacing stranding process that the head and the tail ends of the two core filaments which are fed between the thread guide roller pair and the thread leading roller pair are pressed down is realized, the interlacing and stranding double core filaments are immediately pressed down by a front roller drafting pair, the interlacing twist in the double core filaments is not completely removed, then the interlacing double core filaments under the residual interlacing twist and the left and the right short fiber strands output by the drafting system are simultaneously output by the front roller drafting pair, the output short fiber strands are immediately twisted into yarns under the action of the imposed twist, and wrapping the interlaced double-core yarn therein to obtain the final double-yarn interlaced core-spun yarn.

Description

Double-filament interlaced core-spun yarn production device and production method

Technical Field

The invention relates to the field of ring spinning new technology, in particular to a device and a method for producing a double-filament interlaced core-spun yarn.

Background

With the continuous progress of the times, the requirements of people on the garment materials are continuously improved, and the textile garment industry is in an age of pursuing fashion, diversification and high quality at present. Therefore, new requirements are also put forward on the development of textile raw materials and textile processes. Among them, the high quality and performance of textiles and the cleanliness of production and processing become the main development directions of modern textile industry, and are also effective ways to improve the grade and added value of products. With the improvement of modern living standard and the acceleration of work rhythm, the high shape-preserving property and easy care property of textiles become important attributes and remarkable marks of high-quality fabrics and clothes. However, the shape retention of the current fabrics made of different fiber materials has many problems, such as the cotton fabrics are easy to wrinkle when worn, the flatness is poor after washing and drying, ironing is needed, the wool fabrics are easy to felt when machine washing, the fabric pleat shape retention is poor, the chemical fiber fabrics are easy to arch and shape retention when worn, and the like. The practical problems of insufficient shape retention, unstable shape retention effect, difficult control of environmental protection index of the prior shape retention technology to meet the standard and the like become serious obstacles for high quality of textiles and can not meet the requirements of people in modern society on high-quality dressing. The development of key preparation technology of high-shape-retaining textiles and the realization of industrial application thereof are important ways and industry consensus for improving the textile quality and the international market competitiveness in China.

In view of the above, the present invention provides a device and a method for producing a double-filament interlaced core-spun yarn, wherein a three-roller drafting structure is adopted in a drafting system, a left and right parallel numerical control core-filament feeding device is arranged above the drafting system, two different filaments actively output by a guide-wire roller pair driven by a servo motor enter a twist wheel together, a guide-wire roller pair is arranged at the lower part of the twist wheel, the twist wheel is driven by the motor to axially rotate, so that the twisting and interlacing processes that the head and the tail ends of the two core filaments fed in are pressed down between the guide-wire roller pair and the guide-wire roller pair are realized, the interlacing and interlacing double core filaments are immediately pressed by a front roller drafting pair after passing through the interlacing and interlacing double core filaments, so that the interlacing and twisting degree in the double core filaments are not completely removed, and then the interlacing double core filaments under the residual interlacing degree and left and right short fiber strands output by the drafting system are simultaneously output by a front roller pair, the output short fiber strand is directly twisted into yarn under the action of the strong twist, and the interlaced double-core yarn is wrapped in the yarn, so that the final double-yarn interlaced core-spun yarn is prepared.

Disclosure of Invention

The invention aims to provide a device and a method for producing a double-filament interlaced core-spun yarn, which are characterized in that a numerical control core filament feeding device with a twist wheel and arranged in parallel at the left and right is arranged above a drafting system, so that the fed double filaments are firstly interlaced and plied and then are produced into the double-filament interlaced core-spun yarn wrapped by double short fiber strands output by drafting, thereby improving the wrapping effect of the double filaments on one hand, improving the strength of the core filament of the core-spun yarn on the other hand and improving the shape retention of the core-spun yarn.

In order to achieve the above object, the present invention relates to a multifilament interlaced-core yarn comprising an outer covering yarn and a core yarn, wherein the core yarn is tightly wrapped in the center by the outer covering yarn, the outer covering yarn is a spun yarn having strong twist, and the core yarn is a filament yarn formed by interlacing and plying a first filament and a second filament.

The invention also relates to a double-yarn interlacing covering yarn production device, which comprises a drafting system and a core yarn interlacing feeding 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 an upper middle 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 have the same structure and comprise roller shafts which are of a solid cylindrical structure, the roller shafts of the rear lower rollers of all spindle positions on the 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 on the rear vehicle table surface of the spinning machine are integrally and fixedly connected, The roller shafts of the middle and lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the front and 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 and the roller shaft are made of the same material and are made of iron or steel, the roller sleeve and the roller shaft are integrally and fixedly connected, the right end of the roller shaft of the front and lower rollers is driven to rotate by a first motor, the right end of the roller shaft of the middle and lower rollers and the right end of the roller shaft of the front and lower rollers are in transmission connection by a first connecting gear set, the right end of the roller shaft of the rear and lower rollers and the right end of the roller shaft of the middle and lower rollers are in transmission connection by a second connecting gear set, the rear upper rubber roller, the middle and upper rubber roller, the front upper rubber roller comprises a rubber roller shaft, the rubber roller shaft is made of iron, the rubber roller shaft is in a solid cylindrical structure, a rear vehicle table surface, one spindle position of the front vehicle table surface and an adjacent spindle position on the, the rubber roll shafts of the rear upper rubber rolls on the two spindle positions of one spindle group are integrally connected, the rubber roll shafts of the middle upper rubber rolls are integrally connected, the rubber roll shafts of the front upper rubber rolls are integrally connected, the outer circumferences of the rubber roll shafts of the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll of each spindle position are sleeved with rubber roll sleeves, the rubber roll sleeves are made of rubber materials, the rubber roll sleeves are connected with the rubber roll shafts through respective middle bearings, the rubber roll sleeves rotate around the rubber roll shafts independently, the length of the rubber roll sleeves is the same as that of the roller sleeves, the rubber roll shafts between the rear upper rubber roll, the middle upper rubber roll and the rubber roll sleeve of the front upper rubber roll of the two spindle positions of 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, so that the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll are installed on the pressurizing assembly, and the rear part of, the pressurizing assembly can rotate along the fixed shaft, so that the rear gluing roller, the middle gluing roller and the front gluing roller can be pressed down under certain pressure in the rotating process, a twisting winding system is arranged right below a front drawing roller pair of the drawing system, a core yarn interlacing feeding system is arranged at the upper part of the drawing system, the core yarn interlacing feeding system comprises a core yarn feeding system and a core yarn interlacing system, the core yarn feeding system comprises a left core yarn feeding system and a right core yarn feeding system, the left core yarn feeding system and the right core yarn feeding system are identical in structure and are arranged in parallel left and right, the left core yarn feeding system and the right core yarn feeding system comprise a core yarn roller and a yarn guide roller pair, a first filament is wound on the core yarn roller of the left core yarn feeding system, a second filament is wound on the core yarn roller of the right core yarn feeding system, and the first filament and the second filament are single filaments or untwisted filament bundles which are identical or different, the lower part of the core wire roller is provided with a yarn guide wheel, the front part of the core wire roller is provided with a yarn guide roller pair, the yarn guide roller pair comprises a yarn guide lower roller and a yarn guide upper rubber roller, the yarn guide lower roller of a left core wire feeding system is driven by a second motor to rotate, the yarn guide lower roller of a right core wire feeding system is driven by a third motor to rotate, the core wire interlacing system comprises a double-yarn interlacing and stranding device and a yarn guide roller pair, the yarn guide roller pair is positioned at the rear upper part of the front drafting roller pair, the yarn guide roller pair comprises a yarn guide lower roller and a yarn guide upper rubber roller, the yarn guide lower roller is driven by a fourth motor to rotate, the first motor and the fourth motor are both servo motors, the first motor and the fourth motor are connected through a programmable logic controller, the double-yarn interlacing and stranding device is positioned between the yarn guide roller pair and the yarn guide roller pair, the double-yarn interlacing and stranding device comprises a fixing plate, and the fixing, the upper part of the fixing sheet is fixedly connected with the fixed cross bar, one end of the fixed cross bar is fixedly connected with the pressurizing assembly, a round hole is arranged at the lower part of the fixed sheet, a connecting bearing is fixedly embedded in the round hole, a rotating roller is embedded and connected in the connecting bearing, the rotating roller is in a hollow cylinder shape with two open ends, the front end of the rotating roller is fixedly embedded in the connecting bearing, the rear end of the rotating roller is fixedly connected with a twist wheel, and the outer circumference of the rotating roller close to one end of the twist wheel is provided with a circular yarn guide hole, the twist wheel is in a solid cylinder shape, a groove is formed in the outer circumference of the twist wheel, the rear end of the rotating roller is fixedly connected with the outer circumferential surface of the twist wheel, the rotating roller is driven to rotate by a transmission shaft through a belt, the transmission shaft is driven to rotate by a fifth motor, and the rotating roller rotates to drive the twist wheel to rotate correspondingly.

When the device is used, the pressurizing assembly rotates along the fixed shaft under the action of force, so that the pressurizing assembly is pressed downwards, the rubber roller sleeve of the rear upper rubber roller of each spindle position is in tight pressing contact with the roller sleeve of the rear lower roller, the rubber roller sleeve of the upper middle rubber roller is in tight pressing contact with the roller sleeve of the middle lower roller, the rubber roller sleeve of the front upper rubber roller is in tight pressing contact with the roller sleeve of the front lower roller, the first motor drives the roller shaft of the front lower roller to rotate, then drives the roller sleeve of the front lower roller which is fixedly connected with the roller shaft of the front lower roller in an integrated manner to rotate, then drives the roller sleeve of the middle lower roller which is fixedly connected with the roller shaft of the middle lower roller in an integrated manner to rotate, then the rubber roller sleeve of the upper middle rubber roller which is tightly pressed and contacted with the rubber roller sleeve is driven to rotate, at the moment, a front drafting zone is respectively formed between the front drafting roller pair and the middle drafting roller pair, the drafting multiple of the front drafting zone is the same and is equal to the gear ratio of the first connecting gear set, the roller shaft of the middle lower roller rotates and then drives the roller shaft of the rear lower roller to rotate through the second connecting gear set, then the roller sleeve of the rear lower roller which is integrally and fixedly connected with the roller shaft of the rear lower roller is driven to rotate and then drives the rubber roller sleeve of the rear upper rubber roller which is tightly pressed and contacted with the roller sleeve to rotate, at the moment, a rear drafting zone is respectively formed between the middle drafting roller pair and the rear drafting roller pair, the drafting multiple of the rear drafting zone is the same and is equal to the gear ratio of the second connecting gear set, and the first short fiber and the second short fiber roving which are completely the same are fed through a double horn mouth, and then the first short fiber sliver and the second short fiber sliver which are completely same are prepared through the, the first short fiber strand and the second short fiber strand are pressed and output by a front drafting roller pair, a first filament on a core filament roller of a left core filament feeding system passes through a filament guide wheel of the left core filament feeding system and then is pressed and fed by a filament guide roller pair, a second motor drives a filament guide lower roller of the left core filament feeding system to rotate, then drives a filament guide upper rubber roller which is tightly pressed and contacted with the filament guide lower roller of the left core filament feeding system to rotate, then drives a first filament to be actively unwound from the core filament roller of the left core filament feeding system, a second filament on a core filament roller of a right core filament feeding system passes through the filament guide wheel of the right core filament feeding system and then is pressed and fed by the filament guide roller pair, a third motor drives the filament guide lower roller of the right core filament feeding system to rotate, then drives the filament guide upper rubber roller which is tightly pressed and contacted with the filament guide lower roller of the right core filament feeding system to rotate, then drives a second filament to be actively unwound from the core filament roller of the right core filament feeding system, then the first filament and the second filament jointly enter a groove of a twist wheel of the double-filament interlacing and plying device, the first filament and the second filament enter the groove of the twist wheel with the same tension through the control of the rotating speed of a second motor and a third motor, then the two filaments jointly enter a rotating roller through a filament guide hole of the rotating roller, the double filaments penetrating through the rotating roller are output by the front end of the rotating roller and then pressed by a filament guide roller pair, in the process, a fifth motor drives a transmission shaft to rotate, then the rotating roller rotates through a belt, the twist wheel is driven to axially rotate, then the double filaments penetrating through the groove of the twist wheel are driven to radially interlace, at the moment, the head end of the first filament between the filament guide roller pair and the filament guide roller pair is pressed and fixed by a filament guide roller pair of a left core filament system, and the tail end of the first filament is pressed and fixed by the filament guide roller pair, the head end of the second filament is pressed and fixed by the filament guide roller pair of the right core filament feeding system, and the tail end of the second filament is pressed and fixed by the filament guide roller pair, so that the first filament and the second filament are driven by the axial rotation of the twist degree wheel to generate an interlacing twisting twist degree action, the twisting direction of the interlacing twisting twist degree is consistent with the twisting direction of the forced twisting twist degree generated by the twisting winding system, the first filament and the second filament are interlaced and plied mutually under the action of the interlacing twisting twist degree, so that the double-filament twisted filament yarn is prepared, the fourth motor drives the filament guide lower roller to rotate, then the filament guide upper rubber roller which is in close pressing contact with the filament guide lower roller is driven to rotate, the prepared double-filament twisted filament yarn is continuously output, the output double-filament twisted filament yarn is immediately pressed by the front drawing roller pair, at the moment, the fourth motor is fed with the rotating speed of the front lower roller pair through the programmable logic controller, and then the rotating speed of the fourth motor is correspondingly adjusted and controlled to realize the double-filament twisted filament pair of the front drawing roller pair Adjusting the pre-drafting tension of the filament yarn, removing the self-interlacing twist of the double-filament folded filament yarn pressed and output by the filament-leading roller pair under the elastic reaction of the filament yarn, but pressing and fixing the output double-filament folded filament yarn by the front drafting roller pair immediately, removing the interlacing twist of the double-filament folded filament yarn partially, determining the size of the removed interlacing twist by the pre-drafting tension and the distance between the filament-leading roller pair and the front drafting roller pair, pressing and outputting the double-filament folded filament yarn and the first short fiber strand and the second short fiber strand together by the front drafting roller pair, immediately twisting the output first short fiber strand and the second short fiber strand into the outer short fiber yarn under the forced twist generated by the twisting and winding system, and immediately wrapping the double-filament folded filament yarn in the outer short fiber yarn in the forced twisting process, and the first short fiber strand and the second short fiber strand have the effect of transferring and interlacing the short fibers in the two strands in the process of strong twisting, and the transferring and interlacing of the short fibers are consistent with the interlacing direction of the two filaments in the double-filament twisted filament yarn, so that the structure of the double-filament twisted filament yarn is fixed under the transferring and interlacing force of the short fibers, the residual interlacing twisting twist degree in the double-filament twisted filament yarn at the center of the double-filament interlaced core-spun yarn is reserved, and the prepared double-filament interlaced core-spun yarn is continuously driven by a twisting and winding system to be output and wound on a winding device.

According to the invention, the numerical control core yarn feeding device with the twist wheels, which is arranged in parallel from left to right, is arranged above the drafting system, so that the production of the double-filament interlaced core-spun yarn, in which the fed double filaments are firstly interlaced and plied and then wrapped by the double short fiber strands output by drafting, is realized, thereby improving the wrapping effect of the double filaments on one hand, improving the strength of the core yarn of the core-spun yarn on the other hand, and improving the shape retention of the core-spun yarn.

Drawings

FIG. 1 is a schematic view of a double-filament interlaced core spun yarn manufacturing apparatus according to the present invention;

fig. 2 is a schematic structural view of a twin wire interlacing and stranding apparatus according to the present invention.

Detailed Description

As shown in figures 1 and 2, the double-yarn interlacing covering yarn production device comprises a drafting system and a core yarn interlacing feeding 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 3 and a rear upper rubber roller 4, the middle drafting roller pair comprises a middle lower roller 5 and a middle upper rubber roller 6, the front drafting roller pair comprises a front lower roller 7 and a front upper rubber roller 8, the rear lower roller 3, the middle lower roller 5 and the front lower roller 7 have the same structure and comprise roller shafts, the roller shafts are of solid cylindrical structures, the roller shafts of the rear lower rollers of all spindle positions of a front vehicle table surface of a spinning machine are fixedly connected in an integrated manner, the roller shafts of the middle lower rollers of all spindle positions are fixedly connected in an integrated manner, the roller shafts of the front lower rollers of all spindle positions are fixedly connected in an integrated manner, the roller shafts of the rear lower rollers of all spindle positions of a rear vehicle table surface of a spinning machine are fixedly connected in an integrated manner, the roller shafts of the rear vehicle table surface, The roller shafts of the middle and lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the front and lower rollers of all spindle positions are integrally and fixedly connected, a roller sleeve is arranged on the outer circumference of the roller shaft, the roller sleeve and the roller shaft are made of the same material and are made of iron or steel, the roller sleeve and the roller shaft are integrally and fixedly connected, the right end of the roller shaft of the front and lower rollers is driven to rotate by a first motor, the right end of the roller shaft of the middle and lower rollers and the right end of the roller shaft of the front and lower rollers are in transmission connection through a first connecting gear set, the right end of the roller shaft of the rear and lower rollers and the right end of the roller shaft of the middle and lower rollers are in transmission connection through a second connecting gear set, the rear upper rubber roller 4, the middle and upper rubber roller 6 and the front upper rubber roller 8 comprise rubber roller shafts, the rubber roller shafts are made of iron, the rubber roller shafts are in solid cylindrical structures, one spindle position of a rear vehicle table top, a front vehicle table top and an adjacent spindle position on the right side, the rubber roll shafts of the rear upper rubber rolls on the two spindle positions of one spindle group are integrally connected, the rubber roll shafts of the middle upper rubber rolls are integrally connected, the rubber roll shafts of the front upper rubber rolls are integrally connected, the outer circumferences of the rubber roll shafts of the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll of each spindle position are sleeved with rubber roll sleeves, the rubber roll sleeves are made of rubber materials, the rubber roll sleeves are connected with the rubber roll shafts through respective middle bearings, the rubber roll sleeves rotate around the rubber roll shafts independently, the length of the rubber roll sleeves is the same as that of the roller sleeves, the rubber roll shafts between the rear upper rubber roll, the middle upper rubber roll and the rubber roll sleeve of the front upper rubber roll of the two spindle positions of 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, so that the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll are installed on the pressurizing assembly, and the rear part of, and the pressurizing assembly can rotate along the fixed shaft, so that the rear gluing roller, the middle gluing roller and the front gluing roller can be pressed down under certain pressure in the rotating process, a twisting winding system is arranged right below a front drawing roller pair of the drawing system, a core yarn interlacing feeding system is arranged at the upper part of the drawing system, the core yarn interlacing feeding system comprises a core yarn feeding system and a core yarn interlacing system, the core yarn feeding system comprises a left core yarn feeding system and a right core yarn feeding system, the left core yarn feeding system and the right core yarn feeding system have the same structure and are arranged in parallel left and right, the left core yarn feeding system and the right core yarn feeding system comprise a core yarn roller 9 and a yarn guide roller pair, a first filament 13 is wound on the core yarn roller of the left core yarn feeding system, a second filament 14 is wound on the core yarn roller of the right core yarn feeding system, the first filament and the second filament are single filaments or untwisted filament bundles which are the same or different, the lower part of a core wire roller is provided with a yarn guide wheel 10, the front part of the core wire roller is provided with a yarn guide roller pair, the yarn guide roller pair comprises a yarn guide lower roller 11 and a yarn guide upper rubber roller 12, the yarn guide lower roller of a left core wire feeding system is driven by a second motor to rotate, the yarn guide lower roller of a right core wire feeding system is driven by a third motor to rotate, the core wire interlacing system comprises a double-yarn interlacing stranding device 15 and a yarn guide roller pair, the yarn guide roller pair is positioned at the rear upper part of the front drafting roller pair, the yarn guide roller pair comprises a yarn guide lower roller 17 and a yarn guide upper rubber roller 18, the yarn guide lower roller is driven by a fourth motor to rotate, the first motor and the fourth motor are servo motors, the first motor and the fourth motor are connected through a programmable logic controller, the double-yarn interlacing stranding device is positioned between the yarn guide roller pair and the yarn guide roller pair, the double-yarn interlacing stranding device comprises a fixing plate 19, and the fixing plate is in a, the upper part of the fixing sheet is fixedly connected with the fixed cross bar, one end of the fixed cross bar is fixedly connected with the pressurizing assembly, a round hole 23 is arranged at the lower part of the fixing piece, a connecting bearing is fixedly embedded in the round hole, a rotary roller 21 is embedded and connected in the connecting bearing, the rotary roller is in a hollow cylinder shape with two open ends, the front end of the rotary roller is fixedly embedded in the connecting bearing, the rear end of the rotary roller is fixedly connected with a twist wheel 20, and the outer circumference of the rotating roller near one end of the twist wheel is provided with a circular yarn guide hole 22, the twist wheel is in a solid cylinder shape, the outer circumference of the twist wheel is provided with a groove, the rear end of the rotating roller is fixedly connected with the outer circumferential surface of the twist wheel, the rotating roller is driven to rotate by a transmission shaft through a belt, the transmission shaft is driven to rotate by a fifth motor, and the rotating roller rotates to drive the twist wheel to correspondingly rotate.

When in use, the pressurizing assembly rotates along the fixed shaft under the action of force, so that the pressurizing assembly is pressed downwards, the rubber roller sleeve of the rear upper rubber roller 4 of each spindle position is in tight pressing contact with the roller sleeve of the rear lower roller 3, the rubber roller sleeve of the upper middle rubber roller 6 is in tight pressing contact with the roller sleeve of the middle lower roller 5, the rubber roller sleeve of the upper front rubber roller 8 is in tight pressing contact with the roller sleeve of the lower front roller 7, the first motor drives the roller shaft of the lower front roller to rotate, then the roller sleeve of the lower front roller which is fixedly connected with the roller shaft of the lower front roller in an integrated manner is driven to rotate, then the rubber roller sleeve of the upper front rubber roller which is in tight pressing contact with the roller sleeve is driven to rotate, the roller shaft of the lower front roller rotates, then the roller shaft of the lower middle roller is driven to rotate through the first connecting gear set, and then the roller sleeve of the lower middle roller which is fixedly connected with the roller shaft of the lower, then the rubber roller sleeve of the middle and upper rubber roller which is in tight press contact with the middle and upper rubber roller is driven to rotate, at the moment, a front drafting zone is respectively formed between the front drafting roller pair and the middle drafting roller pair, the drafting multiple of the front drafting zone is the same as and equal to the gear ratio of the first connecting gear set, 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 set, 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 and then drives the rubber roller sleeve of the rear and upper rubber roller which is in tight press contact with the roller sleeve to rotate, at the moment, a rear drafting zone is respectively formed between the middle drafting roller pair and the rear drafting roller pair, the drafting multiple of the rear drafting zone is the same as and equal to the gear ratio of the second connecting gear set, and the first short fiber roving 1 and the second short, The drafting action of the front drafting zone produces a first short fiber strand and a second short fiber strand which are completely the same, the first short fiber strand and the second short fiber strand are pressed and output by a front drafting roller pair, a first filament 13 on a core filament roller of a left core filament feeding system is pressed and fed by a filament guide roller pair after passing through a filament guide wheel of the left core filament feeding system, a second motor drives a filament guide lower roller of the left core filament feeding system to rotate, then drives a filament guide upper roller which is tightly pressed and contacted with the filament guide lower roller of the left core filament feeding system to rotate, then drives the first filament to be actively unwound from the core filament roller of the left core filament feeding system, a second filament 14 on a core filament roller of a right core filament feeding system is pressed by the filament guide roller pair after passing through the filament guide wheel of the right core filament feeding system, a third motor drives the filament guide lower roller of the right core filament feeding system to rotate, then drives the filament guide upper roller which is tightly pressed and contacted with the filament guide lower roller of the right core filament feeding system to rotate, then the second filament is driven to actively unwind from the core filament roller of the right core filament feeding system, then the first filament and the second filament jointly enter the groove of the twist wheel 20 of the double filament interlacing and plying device, the first filament and the second filament enter the groove of the twist wheel with the same tension through the rotation speed control of the second motor and the third motor, then the two filaments jointly enter the rotating roller 21 through the filament guiding hole 22 of the rotating roller, the double filaments passing through the rotating roller are output from the front end of the rotating roller and then pressed by the filament guiding roller pair, in the process, the fifth motor drives the transmission shaft to rotate, then the rotating roller 21 is rotated through the belt, then the twist wheel 20 is driven to axially rotate, then the double filaments passing through the groove of the twist wheel are driven to radially interlace, at the moment, the head end of the first filament 13 between the filament guiding roller pair and the filament guiding roller pair is pressed and fixed by the filament guiding roller pair of the left core filament feeding system, The tail end is pressed and fixed by the thread leading roller pair, the head end of the second filament 14 is pressed and fixed by the thread leading roller pair of the right core filament feeding system, the tail end is pressed and fixed by the thread leading roller pair, so that the first filament and the second filament are subjected to the action of the interlacing twisting twist under the driving of the axial rotation of the twist wheel, the twisting direction of the interlacing twisting twist is consistent with the twisting direction of the forced twisting twist generated by the twisting and winding system, the first filament and the second filament are subjected to the interlacing and stranding mutually under the action of the interlacing and twisting twist, so that the double-filament twisted filament yarn 16 is prepared, the fourth motor drives the thread leading lower roller 17 to rotate, then the leading upper rubber roller 18 which is in tight pressing contact with the thread leading lower roller is driven to rotate, then the prepared double filament twisted filament yarn is driven to be continuously output, the output double filament twisted filament yarn is immediately pressed by the front drawing roller pair, at the moment, the fourth motor obtains the rotating speed of the front lower roller 7 through the programmable logic controller, then the corresponding regulation control of the rotating speed of a fourth motor realizes the regulation of the pre-drafting tension of the double-filament twisted filament yarn fed into the front drafting roller pair, the double-filament twisted filament yarn pressed and output by the filament guiding roller pair is separated from the fixed pressing action, so that the self interlacing twisting twist can be removed under the elastic reaction of the filament, but the output double-filament twisted filament yarn is immediately pressed and fixed by the front drafting roller pair, so that the interlacing twisting twist of the double-filament twisted filament yarn is partially removed, the size of the removed interlacing twisting twist is determined by the pre-drafting tension and the distance between the filament guiding roller pair and the front drafting roller pair, the double-filament twisted filament yarn, the first short fiber strand and the second short fiber strand are pressed and output by the front drafting roller pair together, and the output first short fiber strand and the second short fiber strand are immediately coated and twisted into short fiber yarn under the twisting action generated by the twisting winding system, and the double-filament twisted filament yarn is immediately wrapped in the strong twisting process to prepare the final double-filament twisted core-spun yarn, the first short fiber strip and the second short fiber strip have the transfer and twist actions of the short fibers in the two strips in the strong twisting process, and the transfer and twist of the short fibers are consistent with the twist direction of the two filaments in the double-filament twisted filament yarn, so that the structure of the double-filament twisted filament yarn is fixed under the transfer and twist action force of the short fibers, the residual twist and twist degree in the double-filament twisted filament yarn positioned in the center of the double-filament twisted core-spun yarn is retained, and the prepared double-filament twisted core-spun yarn is continuously driven by a twist and winding system to be output and wound on a winding device.

Claims

1. A double-yarn interlacing covering yarn production device comprises a drafting system and a core yarn interlacing feeding 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 have the same structure and comprise roller shafts, the roller shafts are of solid cylindrical structures, the roller shafts of the rear lower rollers of all spindle positions on a front vehicle table top 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 on the rear vehicle table top of the spinning machine are integrally and fixedly connected, the roller shafts of the rear lower rollers of all spindle positions are integrally and fixedly connected, The roller shafts of the middle and lower rollers of all spindle positions are integrally and fixedly connected, the roller shafts of the front and 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 and the roller shaft are made of the same material and are made of iron or steel, the roller sleeve and the roller shaft are integrally and fixedly connected, the right end of the roller shaft of the front and lower rollers is driven to rotate by a first motor, the right end of the roller shaft of the middle and lower rollers and the right end of the roller shaft of the front and lower rollers are in transmission connection by a first connecting gear set, the right end of the roller shaft of the rear and lower rollers and the right end of the roller shaft of the middle and lower rollers are in transmission connection by a second connecting gear set, the rear upper rubber roller, the middle and upper rubber roller, the front upper rubber roller comprises a rubber roller shaft, the rubber roller shaft is made of iron, the rubber roller shaft is in a solid cylindrical structure, a rear vehicle table surface, one spindle position of the front vehicle table surface and an adjacent spindle position on the, the rubber roll shafts of the rear upper rubber rolls on the two spindle positions of one spindle group are integrally connected, the rubber roll shafts of the middle upper rubber rolls are integrally connected, the rubber roll shafts of the front upper rubber rolls are integrally connected, the outer circumferences of the rubber roll shafts of the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll of each spindle position are sleeved with rubber roll sleeves, the rubber roll sleeves are made of rubber materials, the rubber roll sleeves are connected with the rubber roll shafts through respective middle bearings, the rubber roll sleeves rotate around the rubber roll shafts independently, the length of the rubber roll sleeves is the same as that of the roller sleeves, the rubber roll shafts between the rear upper rubber roll, the middle upper rubber roll and the rubber roll sleeve of the front upper rubber roll of the two spindle positions of 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, so that the rear upper rubber roll, the middle upper rubber roll and the front upper rubber roll are installed on the pressurizing assembly, and the rear part of, and the pressurizing assembly can rotate along the fixed shaft, so that the rear gluing roller, the middle gluing roller and the front gluing roller are pressed down under certain pressure in the rotating process, a twisting winding system is arranged right below the front drafting roller pair of the drafting system, and a core yarn interlacing feeding system is arranged on the upper part of the drafting system, and is characterized in that: the core yarn interlacing feeding system comprises a core yarn feeding system and a core yarn interlacing system, the core yarn feeding system comprises a left core yarn feeding system and a right core yarn feeding system, the left core yarn feeding system and the right core yarn feeding system are identical in structure and are arranged in a left-right parallel mode, the left core yarn feeding system and the right core yarn feeding system comprise core yarn rollers and yarn guide roller pairs, a first filament is wound on the core yarn roller of the left core yarn feeding system, a second filament is wound on the core yarn roller of the right core yarn feeding system, the first filament and the second filament are single filaments or untwisted filament bundles which are identical or different, a yarn guide wheel is arranged on the lower portion of the core yarn roller, the yarn guide roller pair is arranged on the front portion of the core yarn roller, the yarn guide roller pair comprises a yarn guide lower roller and a yarn guide upper rubber roller, the yarn lower roller of the left core yarn feeding system is driven to rotate by a second motor, the yarn guide lower roller of the right core yarn feeding system is driven to rotate by a third motor, the core wire interlacing system comprises a double-wire interlacing stranding device and a wire guiding roller pair, the wire guiding roller pair is positioned above the rear part of the front drawing roller pair, the wire guiding roller pair comprises a wire guiding lower roller and a wire guiding upper rubber roller, the wire guiding lower roller is driven by a fourth motor to rotate, the first motor and the fourth motor are both servo motors, the first motor and the fourth motor are connected through a programmable logic controller, the double-wire interlacing stranding device is positioned between the wire guiding roller pair and the wire guiding roller pair, the double-wire interlacing stranding device comprises a fixing piece, the fixing piece is rectangular, the upper part of the fixing piece is fixedly connected with a fixed cross rod, one end of the fixed cross rod is fixedly connected to a pressurizing assembly, a circular hole is formed in the lower part of the fixing piece, a connecting bearing is fixedly embedded in the circular hole, a rotating roller is embedded and connected in the connecting bearing, and the rotating roller is in a hollow cylindrical shape with two open ends, the front end of the rotating roller is fixedly embedded in the connecting bearing, the rear end of the rotating roller is fixedly connected with the twist wheel, a circular yarn guide hole is formed in the outer circumference of the rotating roller close to one end of the twist wheel, the twist wheel is in a solid cylinder shape, a groove is formed in the outer circumference of the twist wheel, the rear end of the rotating roller is fixedly connected with the outer circumferential surface of the twist wheel, the rotating roller is driven to rotate by a transmission shaft through a belt, the transmission shaft is driven to rotate by a fifth motor, and the rotating roller rotates to drive the twist wheel to rotate correspondingly.

2. A method for producing a two-filament interlaced-core yarn based on the two-filament interlaced-core yarn production apparatus according to claim 1, the two-filament interlaced-core yarn comprising an over-spun yarn and a core filament, the core filament being tightly wrapped in the center by the over-spun yarn, the over-spun yarn being a spun yarn having strong twist, the core filament being a filament yarn formed by interlacing a first filament and a second filament; when the device is used, the pressurizing assembly rotates along the fixed shaft under the action of force, so that the pressurizing assembly is pressed downwards, the rubber roller sleeve of the rear upper rubber roller of each spindle position is in tight pressing contact with the roller sleeve of the rear lower roller, the rubber roller sleeve of the upper middle rubber roller is in tight pressing contact with the roller sleeve of the middle lower roller, the rubber roller sleeve of the front upper rubber roller is in tight pressing contact with the roller sleeve of the front lower roller, the first motor drives the roller shaft of the front lower roller to rotate, then drives the roller sleeve of the front lower roller which is fixedly connected with the roller shaft of the front lower roller in an integrated manner to rotate, then drives the roller sleeve of the middle lower roller which is fixedly connected with the roller shaft of the middle lower roller in an integrated manner to rotate, then the rubber roller sleeve of the upper middle rubber roller which is tightly pressed and contacted with the rubber roller sleeve is driven to rotate, at the moment, a front drafting zone is respectively formed between the front drafting roller pair and the middle drafting roller pair, the drafting multiple of the front drafting zone is the same and is equal to the gear ratio of the first connecting gear set, the roller shaft of the middle lower roller rotates and then drives the roller shaft of the rear lower roller to rotate through the second connecting gear set, then the roller sleeve of the rear lower roller which is integrally and fixedly connected with the roller shaft of the rear lower roller is driven to rotate and then drives the rubber roller sleeve of the rear upper rubber roller which is tightly pressed and contacted with the roller sleeve to rotate, at the moment, a rear drafting zone is respectively formed between the middle drafting roller pair and the rear drafting roller pair, the drafting multiple of the rear drafting zone is the same and is equal to the gear ratio of the second connecting gear set, and the first short fiber and the second short fiber roving which are completely the same are fed through a double horn mouth, and then the first short fiber sliver and the second short fiber sliver which are completely same are prepared through the, the first short fiber strand and the second short fiber strand are output by pressing through the front drafting roller pair, and the device is characterized in that: a first filament on a core filament roller of a left core filament feeding system is pressed and fed by a filament guide roller pair after passing through a filament guide wheel of the left core filament feeding system, a second motor drives a filament guide lower roller of the left core filament feeding system to rotate, then drives a filament guide upper roller which is tightly pressed and contacted with the filament guide lower roller of the left core filament feeding system to rotate, then drives the first filament to be actively unwound from the core filament roller of the left core filament feeding system, a second filament on the core filament roller of a right core filament feeding system is pressed and fed by the filament guide roller pair after passing through the filament guide wheel of the right core filament feeding system, a third motor drives the filament guide lower roller of the right core filament feeding system to rotate, then drives the filament guide upper roller which is tightly pressed and contacted with the filament guide lower roller of the right core filament feeding system to rotate, then drives the second filament to be actively unwound from the core filament roller of the right core filament feeding system, and then the first filament and the second filament jointly enter a groove of a twist degree wheel of a double-yarn intertwisting device, the first filament and the second filament enter the groove of the twist wheel with the same tension through the rotation speed control of the second motor and the third motor, the second filament enters the rotary roller through the filament guide hole of the rotary roller together, the double filaments passing through the rotary roller are output from the front end of the rotary roller and then pressed by the pair of filament guide rollers, in the process, the fifth motor drives the transmission shaft to rotate, then the rotary roller rotates through the belt, then the twist wheel is driven to axially rotate, then the double filaments passing through the groove of the twist wheel are driven to radially intertwine, at the moment, the head end of the first filament between the pair of filament guide rollers and the pair of filament guide rollers is pressed and fixed by the pair of filament guide rollers of the left core wire feeding system, the tail end of the first filament is pressed and fixed by the pair of filament guide rollers of the right core wire feeding system, the tail end of the second filament is pressed and fixed by the pair of filament guide rollers of the right core wire feeding system, so that the first filament and the second filament are subjected to the action of interlacing twisting twist under the drive of the axial rotation of the twist wheel, the twisting direction of the interlacing twisting twist is consistent with the twisting direction of the strong twisting twist generated by the twisting winding system, the first filament and the second filament are interlaced and plied mutually under the action of the interlacing twisting twist, thereby obtaining the double-filament plied filament yarn, the fourth motor drives the lower drawing roller to rotate, then drives the upper drawing rubber roller which is in tight pressing contact with the lower drawing roller to rotate, then drives the prepared double-filament plied filament yarn to be continuously output, the output double-filament plied filament yarn is immediately pressed by the front roller pair, at the moment, the fourth motor obtains the rotating speed of the front lower roller through the programmable logic controller, and then realizes the adjustment of the pre-drafting tension of the double-filament plied filament yarn fed into the front drafting roller pair through the corresponding adjustment control of the rotating speed of the fourth motor, the double-filament twisted filament yarn pressed and output by the filament guiding roller pair is separated from the fixed pressing action, so that the self interlacing twisting twist is removed under the elastic reaction of the filament, but the output double-filament twisted filament yarn is immediately pressed and fixed by the front drafting roller pair, so that the interlacing twisting twist of the double-filament twisted filament yarn is partially removed, the size of the removed interlacing twisting twist is determined by the pre-drafting tension and the distance between the filament guiding roller pair and the front drafting roller pair, the double-filament twisted filament yarn, the first short fiber strand and the second short fiber strand are pressed and output together by the front drafting roller pair, the output first short fiber strand and the second short fiber strand are immediately twisted into the short fiber yarn under the action of the forced twist generated by the twisting winding system, and the double-filament twisted filament yarn is immediately wrapped in the forcing twisting process, and the first short fiber strand and the second short fiber strand have the effect of transferring and interlacing the short fibers in the two strands in the process of strong twisting, and the transferring and interlacing of the short fibers are consistent with the interlacing direction of the two filaments in the double-filament twisted filament yarn, so that the structure of the double-filament twisted filament yarn is fixed under the transferring and interlacing force of the short fibers, the residual interlacing twisting twist degree in the double-filament twisted filament yarn at the center of the double-filament interlaced core-spun yarn is reserved, and the prepared double-filament interlaced core-spun yarn is continuously driven by a twisting and winding system to be output and wound on a winding device.