CN102704112B - Double-bundle screen asymmetric composite yarn, spinning method and applications - Google Patents

Abstract

The invention relates to a double-bundle net asymmetric composite yarn, a composite spinning method and its application. The composite yarn is a 3×2 double-bundle mesh composite yarn that is composed of tow/short fiber/wire mesh 3-axis asymmetric mesh-wrapped core yarn, mesh-wrapped yarn, or mesh-wrapped yarn and then 2-axis symmetrical compounding. It can weave clear texture, soft and wear-resistant, high strength, anti-pilling, beautiful and comfortable fabrics and fine high-grade fabrics. The spinning method for realizing the composite yarn is to use a splitter to split the two filaments into four bundles, two of which are fed with equal or unequal tension in the middle, close to, or separated from the short fiber strands; The two bundles are unfolded into a wire mesh by the spreader, and are fed into the short fiber strands in the form of a lower holder, an upper cover, or away from them; the short fiber strands are clamped in pairs and wrapped into yarns, and then symmetrically compounded and twisted into yarns. This method is suitable for the spinning of ultra-short, easy-to-dust, easy-to-fly fibers and short, weak recycled fibers with protective, soft and smooth, high-count composite yarns.

Description

A double-bundle net asymmetric composite yarn, spinning method and application

technical field

The invention relates to a double-bundle net asymmetric composite yarn, the spinning method of the composite yarn, the composite yarn and the application of the spinning method, which belong to the 3× 2 Asymmetric composite spinning technology.

Background technique

As renewable fiber resources and recycled fibers are used as raw materials for textile processing, because these two types of fiber resources are characterized by short length, damaged strength and low strength, the processed products have more hairiness, poor wear resistance and low quality. . As a result, short and weak fibers of this type cannot be fully utilized. The patent provides a composite yarn with filaments covering short fibers, which can make up for this deficiency and improve the utilization rate of short fibers. First of all, it is necessary to solve the separation of filament bundles into single filaments, which has become the prerequisite for composite spinning of filaments and short fibers. But at present relevant filament bundle is split into the patent report of single filament, as Ma Qiang's patent continuous fiber bundle dispersing device (patent publication number CN1811025A) mainly relies on the air pressure effect to complete the splitting process, Yu Mingwei's patent splits the filament The rewinding/unwinding equipment and method (patent publication number CN1884026A) that is decomposed into parallel monofilaments is composed of a reed splitter and a tension control device. Silk.

Therefore, the optimal way to achieve effective protection, thinning and high-quality composite spinning processing of short and weak fibers is to solve the problem of thinning of filaments. The prevailing method is to reduce the number of fibers in the filament bundle or to make individual filaments thinner. The former affects the spinning output due to deceleration and is easy to cause fiber beam splitting damage due to the extremely high spinning speed, while the latter not only greatly reduces the output and increases the number of broken ends, but also is a difficult specialized spinning technology. The technology related to filament unfolding into a net is even rarer. As Ma Qiang's continuous fiber bundle dispersing device (patent publication number CN1811025A) is mainly made up of air separator and carder, adopts air separation long filament to separate, obviously is not suitable for the spinning of short fiber strand. Yu Mingwei's patent decomposes the tow into parallel monofilament winding/unwinding equipment and method (Patent Publication No. CN1884026A) for large-width arrangement, which is not only different from the patent of the present invention in mechanism, principle and method, but also Cannot be used for short staple spinning. Joseph Lee Lifke's patent method and device for separating fiber bundles (METHOD AND APPARATUS FOR SPEREADING FIBER BUNDLES) (patent publication No. US6049956) consists of several dispersion drums, and the fiber bundles are dispersed by changing the angle of the discs at both ends of the dispersion drum , not only the problem with Yu Mingwei's patent, but also more large equipment and mechanical parts.

Therefore, it is necessary to provide a specialized technology that increases the spinning count by splitting the filaments, and uses the filaments to form a net for protective spinning, so as to achieve effective protection of short and weak fibers and high-quality spinning processing and conventional spinning. Spinning of high-count and even ultra-high-count fibers.

Contents of the invention

An object of the present invention is to provide a protective spinning that can achieve asymmetrical tow reinforcement and short fiber strands wrapped by wire mesh, which is suitable for ultra-short, easy-to-dust, easy-to-fly fibers and short, weak Protective, soft and clean, high-count composite yarn of recycled fibers. Another object of the present invention is to provide a method for spinning the above-mentioned composite yarn. Another object of the present invention is to provide an application of the above-mentioned composite yarn and the above-mentioned spinning method.

In order to achieve the above object, a technical solution of the present invention is to provide a double-bundle mesh asymmetric composite yarn, which is characterized in that: it is an asymmetric mesh-wrapped core-spun yarn of the 3-axis system of tow/short fiber strands/wire mesh , asymmetric net-wrapped yarn, or asymmetric net-wrapped yarn and then 2-axis composite 3×2 asymmetric composite spinning double-bundle net composite yarn structure, which has three basic forms, namely, asymmetric net-wrapped core Composite yarn, asymmetric net-wrapped composite yarn and asymmetric net-wrapped composite yarn, wherein, asymmetry means that the linear density of the two filament bundles after splitting is different, and the tension of the two bundles of filaments is not equal 1. Two bundles of filaments are on the same side of the short fiber strands, two wire meshes are on the same side of the short fiber strands, and the positions of the two wire meshes are different from the staple fiber strands. At least one of the five conditions is established; and there are three basic forms Combined double-bundle net composite yarn combined in pairs;

The asymmetric net-wrapped core-spun composite yarn is composed of two asymmetric or symmetrical filament bundles located in the center of the two short fiber strands and wrapped by them, and the two wire meshes are supported, covered or separated from the two short fibers. After the strands are wrapped and wrapped, two strands of wire mesh are wrapped around the outside, and the filament bundle is wrapped inside the core-wrapped 3-axis asymmetric net-wrapped core-spun yarn, and then two strands are combined to form a composite yarn of net-wrapped core-spun yarn ;

The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles close to the left or right side of the two short fiber strands and intertwisted with them, while the two silk nets are supported, covered or separated. After wrapping the two short fiber strands and filament strands and wrapping them together, a 3-axis asymmetrical mesh wrapping is formed, in which the filament strands are wrapped close to the staple strands and wrapped together. yarn, and then two composite yarns are wrapped in a composite yarn close to the yarn;

The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles at a certain distance on the left or right side of the two short fiber strands, and the two silk nets under the support, upper cover or leave the After the two short fiber strands are wrapped and wrapped, the filament bundle is wrapped into a wire mesh wrapped yarn, and the filament bundle is wrapped with a 3-axis asymmetric net wrapped yarn of the wire mesh and the short fiber strands, and then Composite yarn composed of two strands of net-wrapped wrapping yarn;

The combined double-bundle net composite yarn refers to any two of the 3-axis asymmetric net-wrapped core yarn, the 3-axis asymmetric net-wrapped yarn, and the 3-axis asymmetric net-wrapped yarn. The composite yarn of the net-wrapped yarn formed by twisting and compounding, that is, the two-by-two combination of the two-by-two combination of the coaxial, close to and separated positions of the filament bundle and the short fiber strands and close to the composite yarn, Net-wrapped and wrapped composite yarn, net-wrapped and core-wrapped composite yarn.

Another technical solution of the present invention is to provide a method for composite spinning of the above-mentioned double-bundle net asymmetric composite yarn, which is characterized in that:

The first step is to install the splitter, tension disc and spreader on the ordinary ring spinning frame, and make the spreader close to the front roller to obtain the driving force for guiding the filaments. Among them, the splitter is divided into left splitter Splitter and right splitter, the yarn spreader is divided into left yarn spreader and right yarn spreader;

The second step is to take the filament and divide it into the left filament and the right filament located in the left and right paths. The flattened yarn and the right flattened yarn, the left flattened yarn is split into left and right mesh bundles with different linear densities, at the same time, the right flattened yarn is split into right bundles with different linear densities and the right mesh bundle, where the linear density is the mass per unit length;

The third step is to adjust the tension of the split left tow and right tow through the tension disc respectively, or go up and feed directly close to the front top roller or be respectively drawn down and close to the front bottom roller. This is the first step. One shaft; lead the left mesh bundle and the right mesh bundle down respectively or go straight into the left and right spreaders, and the left and right mesh bundles are separated by the left and right spreaders respectively. The left and right screens that are unfolded into a quasi-single layer go out of the clamping place between the left and right spreaders and the front bottom roller or front top roller, and are output close to the front bottom roller or front top roller. This is second axis;

The fourth step, the left tow and right tow of the first axis from above, or below, or from the side; the left screen and right screen of the second axis from below, or above, or from the side; As the third axis, the left and right strands of short fiber strands are centered respectively through the left and right clusters, and are fed into the front roller nip synchronously, and the left strands and the upward or downward left tow and/or the downward or straight left wire mesh forms a coaxial or non-axial stack or distribution arrangement; Axial or non-axial lamination or distribution arrangement; after exiting the nip of the front roller, under the action of twisting, the left three-axis composite yarn and the right three-axis composite yarn with tow reinforcement and screen wrapping protection are formed on the left and right respectively. The three-axis composite yarn, the left three-axis composite yarn and the right three-axis composite yarn are combined to form a double-bundle net composite yarn.

Preferably, the left splitter and the right splitter are connected to a moving rod that can move left and right, up and down;

The left splitter includes a left yarn guide hook, and the left long filament enters the left flattening roller through the left yarn guide hook to be flattened to obtain the flattened yarn, and then the left splitting rod splits it into different linear densities. etc. said left tow and said left mesh tow;

The right splitter includes a right yarn guide hook, and the right filament enters the right flattening roller through the right yarn guide hook to be flattened to obtain the flattened yarn, and then is split by the right splitter bar into different linear density yarns. etc. said right tow and said right mesh tow;

The position of the left filament and the right filament can be adjusted by moving the left splitter and the right splitter left and right on the moving rod; the left and right filaments can be adjusted synchronously by moving the moving rod left and right. The positions of the filament and the right filament can be adjusted synchronously by moving up and down the positions of the left splitter and the right splitter; the left yarn guide hook and the right yarn guide hook can move up and down respectively, To adjust the enveloping angle θ ₁ of the left filament and the right filament on the left and right stretching rollers.

Preferably, the tension disk includes a left tension disk and a right tension disk, the left tension disk and the right tension disk are sleeved on the hexagonal rod, and the hexagonal rod is fixedly connected with the tension disk moving frame that can move up and down, forward and backward, and on the hexagonal rod There are left sliding block and right sliding block socketed, the left rotating bushing and the right rotating bushing are respectively socketed on the left sliding block and the right sliding block, the left upward guide wire hook and the right upward guide wire hook or the left downward guide wire The wire hook and the right downward guide wire hook are fixedly connected to the left rotating shaft sleeve and the right rotating shaft sleeve respectively;

The left tow and the right tow are respectively fed through the left tension disc and the right tension disc to adjust the tension, or go up through the left upward guide wire hook and the right upper guide wire hook and directly cling to the front top roller, or Feed through the left and right downward guide wire hooks close to the front bottom roller;

The left guidewire hook and the right downward guidewire hook are a symmetrical pair of left and right hands. The left guidewire hook and the right downward guidewire hook are respectively connected with the left slide bar and the right slide bar. The upper end of the upper end is fixedly connected with the left slider and the right slider respectively;

Through the left and right movement of the left tension disc and the left slider and the right tension disc and the right slider synchronously on the hexagon rod respectively, the position and spacing of the left tow and the right tow are adjusted; Move to adjust the enveloping angle _α1 of the left tow and the right tow on the front top roller or to adjust the left tow and the right tow on the front bottom The enveloping angle α ₂ on the roller; through the coaxial rotation of the left and right turning bushes on the left slider and the right slider, to adjust the left tow and the right tow on the left The enveloping angle θ _L and the enclosing angle θ _R on the tension disc and the right tension disc.

Preferably, the left yarn spreader and the right yarn spreader are connected to a moving rod that can move left and right, up and down, wherein the left yarn spreader includes a left lower guide wire hook or a left straight wire guide hook, The left mesh bundle is fed to the left middle line on the left spreading roller through the left lower guide wire hook or the left straight wire guide hook, so that the left mesh bundle is expanded into a quasi-single layer of the left wire mesh. One end of the guide wire hook is fixedly connected to form a fixed end for stable positioning. The fixed end is the left bifurcated end. The left bifurcated end is connected with the lower left guide rod, and the upper end of the lower left guide rod is the upper left single-loop hook;

The right wire spreader includes a right lower guide wire hook or a right straight wire guide hook, and the right mesh wire bundle is centrally fed to the right center line on the right wire spreader roller through the right lower guide wire hook or the right straight wire guide hook, The right wire bundle is expanded into a quasi-single layer of the right wire mesh, and one end of the lower right guide wire hook is fixedly connected to form a fixed end for positioning stability, and the fixed end is a right bifurcated end, and the right bifurcated The end is connected with the lower right guide rod, and the upper end of the lower right guide rod is the upper right single-loop hook;

Symmetrical herringbone thread grooves are engraved on the surface of the left spreading roller and the right spreading roller, and the connecting lines of the vertices of the herringbone thread grooves are the left middle line and the right middle line respectively;

Through the up and down movement of the left lower guide wire hook and the right lower guide wire hook or the left straight wire guide hook and the right straight wire guide hook, the alignment of the left mesh wire bundle and the right mesh wire bundle to the left spreading roller and the right stretching roller can be adjusted. The enveloping angle θ ₂ of the silk roll.

Preferably, the filaments are filaments with the same chemical composition as the short fiber strands.

Preferably, the filament is one or both of untwisted man-made fiber filament, synthetic fiber filament and natural silk.

Preferably, the staple fiber slivers are obtained from roving slivers made of staple fibers commonly used in textiles, fed through the rear roller on the spinning frame, and then drafted by the apron roller.

Another technical solution of the present invention is to provide an application of the above-mentioned double-bundle mesh asymmetric composite yarn, which is characterized in that: it is used for weaving into clear texture, stable structure, soft wear resistance, high strength, anti-pilling, Beautiful and comfortable fabrics and fine high-end fabrics.

Another technical solution of the present invention is to provide an application of the above-mentioned composite spinning method, which is characterized in that: it is used for ultra-short, easy-to-dust, easy-to-fly fibers and short, weak recycled fibers. Spinning of soft and clean high-count composite yarn.

The principle involved in the invention is to reduce the consumption of filaments by flattening and splitting two filaments with a splitter, highlight the characteristics of short fibers and spin high-count composite yarns; use the tension disc to regulate the tension of filaments to change the structure of composite yarns and realize Asymmetric forming under symmetrical conditions; expand the wire mesh with a spreader to protect the short fiber strands, reduce fiber loss and increase inter-fiber cohesion; use two strands of tow/short fiber strands/wire mesh 3-axis composite yarn Then symmetrical 3×2 axis compounding to stabilize the yarn structure, adjust the yarn style and improve the strength.

The characteristics and beneficial effects of the present invention are: ①Only adding a pair of splitters, a pair of tension discs and a pair of yarn spreaders on the ordinary spinning frame solves the problems of short and weak fibers, poor spinnability, or non-spinnable fibers; Spinning of smooth composite yarn with high yield and low hairiness, the method is simple, the mechanism is practical, the installation is convenient, controllable and adjustable; The net-forming protection reduces the consumption of filaments by half, and the spinnable count is higher; ③The added tension disc can realize the asymmetric structure and forming effect of symmetrical spinning; ④By adjusting the yarn spreader, the filaments can be easily and quickly The bundle is unfolded into a wire mesh and wrapped around the short fiber to achieve the stability of the yarn structure; ⑤ It can realize the protection of the upper cover and lower support of the non-spinnable fiber such as kapok and recycled fiber such as noil, and achieve continuous , Reinforcement, low flying, shedding and fluff spinning, of course, it is also suitable for spinning with higher counts of commonly used fibers.

Description of drawings

Fig. 1 is a schematic diagram of the principle and mechanism of the asymmetrical composite spinning of double filaments that are spread into tows and silk screens;

Fig. 2 is a side view of the asymmetrical composite spinning principle and mechanism of double filaments being spread into a descending tow and a straight wire mesh;

Fig. 3 is a side view of the asymmetric composite spinning principle and mechanism in which the double filaments are divided into an upward tow and a downward wire mesh;

Fig. 4a is a schematic diagram of the twisted composite yarn and structure of the upper cover net-wrapped core-spun composite yarn in the non-isosceles twisted triangular area with unequal tension;

Fig. 4b is a schematic diagram of the twisted composite yarn and the structure of the bottom support net-wrapped core-spun composite yarn in the non-isosceles twisted triangle area with different linear densities;

Fig. 4c is a schematic diagram of the twisted composite yarn and the structure of the wrapped core-wrapped composite yarn on the left side of the screen;

Fig. 4d is a schematic diagram of twisting composite yarn and structure of a silk net wrapped under a silk net and a cover net wrapped in a core-spun composite yarn;

Figure 5a is a schematic diagram of the structure and structure of the twisted composite yarn wrapped by the left side of the lower support net next to the composite yarn;

Figure 5b is a schematic diagram of the yarn and structure of the double-wrapped net wrapped on the right side close to the composite yarn with different linear densities, twisted and composited;

Figure 5c is a schematic diagram of a top cover, a top winding net wrapped in a symmetrical close to the composite yarn, twisted composite yarn and structure;

Fig. 5d is a schematic diagram of twisting and composite yarn and structure of the composite yarn wrapped on the left side with the upper winding and the second winding net;

Figure 6a is a schematic diagram of the double-bottom wrapped net-wrapped left-side wrapped composite yarn twisted composite yarn and its structure;

Fig. 6b is a schematic diagram of twisting composite yarn and structure of wrapping composite yarn wrapped on the right side with one support and one winding;

Figure 6c is a schematic diagram of the yarn and structure of the double upper cover net wrapped symmetrically wrapped composite yarn with different tensions and twisted composite yarn;

Fig. 6d is a schematic diagram of yarn structure and twisted compound yarn wrapped symmetrically wrapped by a supporting net and wrapped on the bottom;

Figure 7a is a schematic diagram of the twisted and composite yarn and structure of the coaxial and close-to-combined double bottom support net composite yarn of the tow;

Fig. 7b is a schematic diagram of the twisted compound yarn and structure of the double upper cover beam net composite yarn combined with the close proximity and separation of the tow;

Fig. 7c is a schematic diagram of twisting composite yarn and structure of the coaxial and left separation combination of the tow;

Figure 7d is a schematic diagram of the yarn and structure of the coaxial and right-separated combination of tows with different linear densities and double-wrapped composite yarns twisted and composited;

In the figure: 1-filament, 1L-left filament, 1R-right filament, 11L-left flattened filament, 11R-right flattened filament, 12L-left bundle of tow, 13L-left mesh bundle, 12R- Right tow, 13R-right mesh, 14L-left mesh, 14R-right mesh;

2L-left splitter, 2R-right splitter, 21L-right yarn guide hook, 21R-right yarn guide hook, 22L, 22R-left and right flattening rollers, 23L, 23R-left and right splitter bar, 24 - mobile rod;

3-tension disc; 31L, 31R-left and right tension disc, 32-hexagon rod, 33-tension disc shifting frame, 34L-left slider, 34R-right slider, 35L-left upward guide wire hook, 35R-right upper Row guide wire hook, 36L-left rotation sleeve, 36R-right rotation sleeve, 37-down guide wire hook; 37L-left down guide wire hook, 37R-right down guide wire hook; 38L-left slide rod, 38R-right down bar;

4L-left spreader, 4R-right spreader, 41L-lower left guide hook, 42L-left spreader, 42R-right spreader, 43L-left middle line, 43R-right middle line, 44L-left drive roller , 44R-right driving roller, 45L-left straight wire guide hook, 45R-right straight wire guide hook, 46L-left bifurcated end, 47L-left lower guide rod, 48L-left upper single loop hook, 49-shift shaft;

5-front roller, 51-front top roller, 52-front bottom roller, 53-front roller jaw;

6-short fiber strands, 61L-left strands, 61R-right strands, 63L-left bundler, 63R-right bundler;

7- double-bundle mesh composite yarn, 71L- left three-axis composite yarn, 71R- right three-axis composite yarn; 8- apron roller; 9- rear roller.

Detailed ways

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with accompanying drawings. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

As shown in Fig. 1, Fig. 2 or Fig. 3, the present invention provides a kind of composite spinning method of asymmetrical composite yarn of double bundle net, and its steps are:

The first step is to install the splitter, the tension disc 3 and the spreader on the ordinary ring spinning frame, and make the spreader close to the front roller 5 to obtain the driving force for guiding the filament 1, wherein the splitter is divided into The left splitter 2L and the right splitter 2R, the yarn spreader is divided into the left yarn spreader 4L and the right yarn spreader 4R;

The second step is to take the filament 1 and divide it into the left filament 1L and the right filament 1R located in the left and right paths, and the left filament 1L and the right filament 1R respectively go through the left splitter 2L and the right splitter The device 2R is first flattened to obtain the left flattened yarn 11L and the right flattened yarn 11R, and the left flattened yarn 11L is split into left tow 12L and right mesh tow 13L with different linear densities. 11R is split into right tow 12R and right mesh tow 13R with different linear densities, wherein the linear density is the mass per unit length;

The third step is to adjust the tension of the split left tow 12L and right tow 12R respectively through the tension disc 3, or go up and directly close to the front top roller 51 to feed or be respectively drawn down and close to the front bottom roller 52 to feed In, this is the first axis I; the left wire bundle 13L and the right wire bundle 13R are led down respectively or go straight into the left wire spreader 4L and the right wire spreader 4R, and the left wire spreader 4L and the right wire spreader 4R expands the left wire bundle 13L and the right wire bundle 13R into quasi-single-layer left wire mesh 14L and right wire mesh 14R respectively, and the left wire spreader 4L and the right wire spreader 4R and the front bottom roller 52 or the front upper The clamping place of the roller 51 is close to the output of the front bottom roller 52 or the front top roller 51, which is the second axis II;

The fourth step, the left tow 12L and right tow 12R of the first axis I from above, or below, or from the side; the left screen 14L and right screen 14R of the second axis II from below or above , or from the side; as the third shaft III short fiber strands 6, the left strands 61L and the right strands 61R are centered respectively through the left bundler 63L and the right bundler 63R, and are fed into the front roller jaw 53 synchronously , the left-way whiskers 61L form coaxial or non-axial laminations or distributed arrangements with the upward or downward left tow 12L and/or the downward or straight left silk screen 14L; the right-way whiskers 61R and the upward or downward The right tow 12R and/or the right silk screen 14R that draws down or goes straight forms coaxial or non-axial lamination or distribution arrangement; Respectively form the left triaxial composite yarn 71L and the right triaxial composite yarn 72R for tow reinforcement and screen wrapping protection, and then compound the left triaxial composite yarn 71L and right triaxial composite yarn 72R to form a double bundle mesh composite yarn7.

The left splitter 2L and the right splitter 2R are connected to a moving rod 24 that can move left and right, up and down;

The left splitter 2L includes a left yarn guide hook 21L, and the left filament 1L enters the left flattening roller 22L through the left yarn guide hook 21L to be flattened to obtain the flattened yarn 11L, and then the left splitting rod 23L divides it It splits into the left wire bundle 12L and the left mesh wire bundle 13L with different linear densities;

The right splitter 2R includes a right yarn guide hook 21R, and the right long filament 1R enters the right flattening roller 22R through the right yarn guide hook 21R to flatten the flattened yarn 11R, and then the right splitting rod 23R will It splits into the right wire bundle 12R and the right mesh wire bundle 13R with different linear densities;

By moving left and right of the left splitter 2L and the right splitter 2R on the moving rod 24, the positions of the left long filament 1L and the right long filament 1R are adjusted; The positions of the left filament 1L and the right filament 1R can be adjusted synchronously, and the positions of the left splitter 2L and the right splitter 2R can be adjusted synchronously by moving up and down; through the left yarn guide hook 21L and the right yarn guide hook 21R can move up and down respectively, so as to adjust the enveloping angle θ ₁ of the left filament 1L and the right filament 1R on the left flattening roller 22L and the right flattening roller 22R.

The tension disk 3 includes a left tension disk 31L and a right tension disk 31R, the left tension disk 31L and the right tension disk 31R are sleeved on the hexagonal rod 32, and the hexagonal rod 32 is fixedly connected with the tension disk moving frame 33 that can move up and down and forward and backward , a left slider 34L and a right slider 34R are sleeved on the hexagonal rod 32, and the left rotation sleeve 36L and the right rotation sleeve 36R are respectively sleeved on the left slider 34L and the right slider 34R, and the left upper guide The wire hook 35L and the right upward guide wire hook 35R or the left downward guide wire hook 37L and the right downward guide wire hook 37R are fixedly connected to the left rotating shaft sleeve 36L and the right rotating shaft sleeve 36R respectively;

After the tension of the left tow 12L and the right tow 12R is adjusted through the left tension disc 31L and the right tension disc 31R respectively, or go up through the left upward guide wire hook 35L and the right upward guide wire hook 35R, they directly cling to the front The upper roller 51 feeds, or feeds through the left downward guide wire hook 37L and the right downward guide wire hook 37R close to the front lower roller 52;

The left line guide wire hook 37L and the right downward line guide wire hook 37R are a pair of left and right hand symmetry, the left line guide wire hook 37L and the right down line guide wire hook 37R are connected with the left slide bar 38L and the right slide bar 38R respectively, The upper ends of the sliding bar 38L and the right sliding bar 38R are respectively fixedly connected to the left slider 34L and the right slider 34R;

The left tension disc 31L and the left slider 34L and the right tension disc 31R and the right slider 34R move synchronously left and right on the hexagonal rod 32 to adjust the position and spacing of the left tow 12L and the right tow 12R ; move up and down, forward and backward by the hexagonal rod 32, to adjust the enveloping angle _α1 of the left tow 12L and the right tow 12R on the front top roller 51 or to adjust the left tow of the descending 12L and the enveloping angle α ₂ of the right tow 12R on the front bottom roller 51; through the coaxial rotation of the left sliding sleeve 36L and the right rotating sleeve 36R on the left slider 34L and the right slider 34R The center rotates to adjust the enveloping angle θ L and the enclosing angle _{θ R of} the left tow 12L and the right tow 12R on the left tension disc 31L and the right tension disc 31R.

The left yarn spreader 4L and the right yarn spreader 4R are connected to a moving rod 49 that can move left and right and up and down, wherein the left yarn spreader 4L includes a left lower guide wire hook 41L or a left straight guide wire Hook 45L, the left mesh wire bundle 13L is centered and fed to the left middle line 43L on the left spreading roller 42L through the left lower guide wire hook 41L or the left straight wire guide hook 45L, so that the left mesh wire bundle 13L is unfolded into a quasi-single For the left wire mesh 14L of the first layer, one end of the lower left guide wire hook 41L is fixedly connected to form a fixed end for stable positioning. The upper end of the lead rod 47L is the upper left single loop hook 48L;

The right spreading device 4R includes the lower right guide wire hook or the right straight wire guide hook 45R, and the right mesh bundle 13R is centered and fed to the right wire spreader roller 42R through the right lower guide wire hook or the right straight wire guide hook 45R The right middle line 43R on the top, so that the right wire bundle 13R is expanded into the right wire mesh 14R of a quasi-single layer, and one end of the lower right guide wire hook is fixedly connected to form a fixed end for positioning stability, and the fixed end is The right bifurcated end, the right bifurcated end is connected with the right lower guide rod, and the upper end of the right lower guide rod is the upper right single-loop hook;

Symmetrical herringbone thread grooves are engraved on the surfaces of the left spreading roller 42L and the right spreading roller 42R, and the connecting lines of the vertices of the herringbone thread grooves are the left middle line 43L and the right middle line 43R respectively;

By moving up and down the left lower guide wire hook 41L and the right lower guide wire hook or the left straight guide wire hook 45L and the right straight guide wire hook 45R, the alignment of the left mesh bundle 13L and the right mesh bundle 13R to the left is adjusted. The wrapping angle θ ₂ of the wire roll 42L and the right spreader roll 42R.

The filament 1 is one or both of untwisted man-made filament, synthetic filament and natural silk, preferably, the filament having the same chemical composition as the short fiber strand 6.

The staple fiber sliver 6 is a roving sliver made of commonly used staple fibers for textiles, which is fed through the rear roller 9 on the spinning frame, and then drawn by the apron roller 8 to obtain.

The double-bundle net asymmetric composite yarn obtained by the above method is an asymmetric net-wrapped core-spun yarn of the 3-axis system of tow/short fiber strands/wire net, an asymmetric net-wrapped close-to-yarn, or an asymmetric net-wrapped Wrapped yarn and 2-axis composite 3×2 asymmetric composite spinning double-bundle mesh composite yarn structure, which has three basic forms, namely, asymmetric mesh-wrapped core-spun composite yarn, asymmetric mesh-wrapped close-to-close composite yarn and asymmetric Net-wrapped composite yarn, wherein, asymmetry means that the linear density of the two filament bundles after splitting is different, the tension of the two bundles of filaments is unequal, and the two bundles of filaments are on the same side of the staple fiber. 1. At least one of the five wire meshes on the same side of the short fiber strands and the positions of the two wire meshes relative to the short fiber strands is different; and there are three basic forms of combined double-bundle net composite yarn;

The asymmetric net-wrapped core-spun composite yarn is composed of two asymmetric or symmetrical filament bundles located in the center of the two short fiber strands and wrapped by them, and the two wire meshes are supported, covered or separated from the two short fibers. After the strands are wrapped and wrapped, two strands of wire mesh are wrapped around the outside, and the filament bundle is wrapped inside the core-wrapped 3-axis asymmetric net-wrapped core-spun yarn, and then two strands are combined to form a composite yarn of net-wrapped core-spun yarn , as shown in Figure 4a to Figure 4d;

The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles close to the left or right side of the two short fiber strands and intertwisted with them, while the two silk nets are supported, covered or separated. After wrapping the two short fiber strands and filament strands and wrapping them together, a 3-axis asymmetrical mesh wrapping is formed, in which the filament strands are wrapped close to the staple strands and wrapped together. Yarn, then two composite yarns are wrapped in a composite yarn close to the yarn, as shown in Figure 5a to Figure 5d;

The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles at a certain distance on the left or right side of the two short fiber strands, and the two silk nets under the support, upper cover or leave the After the two short fiber strands are wrapped and wrapped, the filament bundle is wrapped into a wire mesh wrapped yarn, and the filament bundle is wrapped with a 3-axis asymmetric net wrapped yarn of the wire mesh and the short fiber strands, and then The composite yarn of the net-wrapped wrapping yarn composited by two strands, as shown in Fig. 6a to Fig. 6d;

The combined double-bundle net composite yarn refers to any two of the 3-axis asymmetric net-wrapped core yarn, the 3-axis asymmetric net-wrapped yarn, and the 3-axis asymmetric net-wrapped yarn. The composite yarn of the net-wrapped yarn formed by twisting and compounding, that is, the two-by-two combination of the two-by-two combination of the coaxial, close to and separated positions of the filament bundle and the short fiber strands and close to the composite yarn, Net-wrapped and wrapped composite yarn, net-wrapped and core-wrapped composite yarn, as shown in Fig. 7a to Fig. 7d.

The following specific examples 1 to 4 are for different fibers and their linear densities, that is, selecting different filaments, different roving strips, different fineness and different composite spinning process parameters, i.e. the tension of the filaments, the angle of envelopment, the position And spacing, spindle speed, front roller speed, spinning twist, etc. Carry out by double-bundle net asymmetrical composite yarn of the present invention, and spin the composite yarn of two asymmetrical net wrapping core yarns, two asymmetrical net wrapping close yarns or two asymmetric net wrapping yarns .

The hairiness of the composite yarn is measured by the single-side hairiness counting method. The hairiness index (F) of the obtained smooth composite yarn refers to the cumulative number of hairiness (roots/m) that protrudes from one side of the yarn per unit length and exceeds a certain length. F＝A+Be ^-Cl , l is the hairiness setting extension length (mm), A, B, C are test constants; breaking strength (P), considering the difference in fiber thickness, indicates the index of fiber resistance to external force damage, Unit (cN/tex); elongation at break ε=(LL ₀ )/L ₀ =ΔL/L ₀ , where L ₀ is the original length, L is the length of the sample at tensile fracture, and ΔL is the absolute elongation Value, the elongation at break indicates the size of the elongation and deformation ability of the material when it breaks.

Embodiment 1: Recycling the composite yarn of cotton/viscose filament asymmetric net-wrapped core-spun yarn

Adopt the compound spinning method that is used for double-bundle network symmetric composite yarn of the present invention, get two bundles of viscose long filaments and be divided into left tow 12L and left mesh tow 13L and linear density that are not equal in linear density The right wire bundle 12R and the right mesh wire bundle 13R. Left tow 12L after splitting and right tow 12R are adjusted its tension through left tension disc 31L and right tension disc 31R respectively and through left upper line guide wire hook 32L and right upper line guide wire hook 32R to adjust left tension disc 31L and right The enveloping angle θ _L and the enclosing angle θ _R of the tension disc 31R; the tension of the left tension disc 31L to the left tow 12L is smaller than the tension of the right tension disc 31R to the right tow 12R, through the left downward guidewire hook 37L and the right downward guidewire The hook 37R is fed close to the front bottom roller 52, and the position of the hexagonal rod 32 is moved up and down, back and forth through the tension disc shift frame 33, and the enveloping angle α ₂ of the left tow 12L and the right tow 12R on the front bottom roller 52 is adjusted. Move the left tension plate 31L, the right tension plate 31R and the hexagonal rod 32 left and right to adjust the position and spacing of the left tow 12L and the right tow 12R relative to the left and right strands 61L and 61R. Expand the left wire bundle 13L and the right wire bundle 13R through the left wire spreader 4L and the right wire spreader 4R to form a quasi-single-layer left wire mesh 14L and right wire mesh 14R, and then move and adjust to wind the warp and the front roller The left driving roller 44L and the right driving roller 44R that are close to each other go out from the nip of the left driving roller 44L, the right driving roller 44R and the front top roller 51 and are close to the front top roller 51 for output. Then left tow tow 12L and right tow tow 12R from below; Left silk screen 14L and right silk screen 14R from top; Recycled cotton fiber sliver left road sliver 61L and right sill 61R pass through left bundler 63L And the right bundler 63R is centered, synchronously fed into the front roller nip 53, after the front roller nip 53, under the action of twisting, the tow reinforcement and the wire mesh asymmetric net wrapping core are respectively formed in the left and right paths. The left triaxial composite yarn 71L and the right triaxial composite yarn 72R, and the left triaxial composite yarn 71L and the right triaxial composite yarn 72R are recombined to form a double-bundle net composite yarn 7, as shown in FIG. 4a. The yarn hairiness index, twist angle, breaking strength, breaking elongation and yarn fineness irregularity of the spun bright and clean composite yarn are listed in the table below. Among them, the spinning rate is very high, which means that there is very little loss of fiber such as flying flowers, shavings, and broken ends; Low, indicating good spinnability and high processing efficiency in yarn forming. During the spinning process, there is no obvious fiber loss and fly, and the ring and plate are clean, which proves the effectiveness of this clamping and protecting composite spinning.

Embodiment 2: cashmere/silk filament asymmetrical net wrapped close to the composite yarn of the yarn

Using the compound spinning method for double-bundle mesh symmetrical composite yarn of the present invention, take two bundles of silk and split them into left tow 12L with unequal linear density, left mesh tow 13L and right tow 12R with unequal linear density With right mesh tow 13R. Adjust the tension of the split left tow 12L and right tow 12R through the left tension disc 31L and the right tension disc 31R and adjust the tension of the left tension disc 31L and the right through the left upper guide wire hook 32L and the right upper guide wire hook 32R The enveloping angle θ _L and the enclosing angle θ _R of the disk 31R; the tension of the left tension disk 31L to the left tow 12L is equal to the tension of the right tension disk 31R to the right tow 12R, through the left upward guide wire hook 35L and the right upward guide wire hook 35R is fed close to the front top roller 51, and the position of the hexagonal rod 32 is moved up and down, forward and backward through the tension disc shift frame 33, and the enveloping angle α ₁ of the left tow 12L and right tow 12R on the front top roller 51 is adjusted, and the left and right tows are passed Move the left tension plate 31L, the right tension plate 31L, 31R and the hexagonal rod 32 to adjust the position and spacing of the left tow 12L and the right tow 12R relative to the left strand 61L and the right strand 61R. Expand the left wire bundle 13L and the right wire bundle 13R through the left wire spreader 4L and the right wire spreader 4R to form a quasi-single-layer left wire mesh 14L and right wire mesh 14R, and then move and adjust to wind the warp and the front roller The left driving roller 44L and the right driving roller 44R that are close to each other go out from the clamping place of the left driving roller 44L and the right driving roller 44R and the front bottom roller 52 and are close to the front bottom roller 52 and output. Then left tow tow 12L and right tow tow 12R right side close together; Left silk screen 14L and right silk screen 14R left side separate; 63L and right bundler 63R are in the center, feeding into the front roller nip 53 synchronously, and after exiting the front roller nip 53, under the action of twisting, the parallel reinforcement of the tow and the asymmetric net wrapping of the wire mesh are respectively formed in the left and right paths Rely on the left triaxial composite yarn 71L and the right triaxial composite yarn 72R of the composite yarn, the left triaxial composite yarn 71L and the right triaxial composite yarn 72R are recombined to form a double-bundle net composite yarn 7, as shown in Figure 5b . The yarn hairiness index, twist angle, breaking strength, breaking elongation and yarn fineness irregularity of the spun bright and clean composite yarn are listed in the table below. Among them, the spinning rate is very high, which means that there is very little loss of fiber such as flying flowers, shavings, and broken ends; Low, indicating good spinnability and high processing efficiency in yarn forming. During the spinning process, there is no obvious fiber loss and fly, and the ring and plate are clean, which proves the effectiveness of this clamping and protecting composite spinning.

Embodiment 3: the composite yarn of kapok/polyester filament mesh wrapping yarn

Adopt the compound spinning method that is used for double-bundle net symmetrical composite yarn of the present invention, take two bundles of polyester long filaments and split into the left silk bundle 12L of linear density and the left wire bundle 13L and the right silk of linear density different Bundle 12R with right mesh wire bundle 13R. Adjust the tension of the split left tow 12L and right tow 12R through the left tension disc 31L and the right tension disc 31R and adjust the tension of the left tension disc 31L and the right through the left upper guide wire hook 32L and the right upper guide wire hook 32R The enveloping angle θ _L and the enclosing angle θ _R of the disk 31R; the tension of the left tension disk 31L to the left tow 12L is greater than the tension of the right tension disk 31R to the right tow 12R, through the left upward guide wire hook 35L and the right upward guide wire hook 35R is fed close to the front top roller 51, and the position of the hexagonal rod 32 is moved up and down, forward and backward through the tension disc shift frame 33, and the enveloping angle α ₁ of the left tow 12L and right tow 12R on the front top roller 51 is adjusted, and the left and right tows are passed Move the left tension plate 31L, the right tension plate 31R and the hexagon rod 32 to adjust the position and distance of the left tow 12L and the right tow 12R relative to the left and right strands 61L and 61R. Expand the left wire bundle 13L and the right wire bundle 13R through the left wire spreader 4L and the right wire spreader 4R to form a quasi-single-layer left wire mesh 14L and right wire mesh 14R, and then move and adjust to wind the warp and the front roller The left driving roller 44L and the right driving roller 44R that are close to each other go out from the nip of the left driving roller 44L, the right driving roller 44R and the front bottom roller 52 and are close to the front bottom roller 52 for output. Then the left tow tow 12L, the right tow tow 12R from the right side; Left screen 14L and right screen 14R separate from below and from the left side respectively; Through the center of the left bundler 63L and the right bundler 63R, it is synchronously fed into the front roller nip 53, and after exiting the front roller nip 53, under the action of twisting, the parallel reinforcement of the tow and the non-woven wire mesh are formed in the left and right paths respectively. The left triaxial system composite yarn 71L and the right triaxial system composite yarn 72R of the symmetrical mesh wrapping compound yarn, the left triaxial system composite yarn 71L and the right triaxial system composite yarn 72R are composited to form a double-bundle net composite yarn 7, such as Figure 6b shows. The yarn hairiness index, twist angle, breaking strength, breaking elongation and yarn fineness irregularity of the spun bright and clean composite yarn are listed in the table below. Among them, the spinning rate is very high, which means that there is very little loss of fiber such as flying flowers, shavings, and broken ends; Low, indicating good spinnability and high processing efficiency in yarn forming. During the spinning process, there is no obvious fiber loss and fly, and the ring and plate are clean, which proves the effectiveness of this clamping and protecting composite spinning.

Embodiment 4: Reuse the composite yarn of combination of short wool/nylon net wrapping

Adopt the compound spinning method that is used for double-bundle network symmetric composite yarn of the present invention, get two bundles of polyamide fiber long filaments and be divided into left and right way and be divided into the left silk bundle 12L that linear density is equal and the left net silk bundle 13L and linear density Equal right tow 12R and right mesh tow 13R. Adjust the tension of the split left tow 12L and right tow 12R through the left tension disc 31L and the right tension disc 31R and adjust the tension of the left tension disc 31L and the right through the left upper guide wire hook 32L and the right upper guide wire hook 32R The enveloping angle θ _L and the enclosing angle θ _R of the disk 31R; the tension of the left tension disk 31L to the left tow 12L is smaller than the tension of the right tension disk 31R to the right tow 12R, through the left downward guide wire hook 37L and the right downward guide wire hook 37R is fed close to the front top roller 52, and the position of the hexagonal rod 32 is moved up and down, forward and backward through the tension disc shift frame 33, and the enveloping angle α ₂ of the left tow 12L and right tow 12R on the front bottom roller 52 is adjusted, and the left and right tows are passed Move the left tow 12L, the right tension disc 31R and the hex rod 32 to adjust the position and spacing of the left tow 12L and the right tow 12R relative to the left and right strands 61L and 61R. Expand the left wire bundle 13L and the right wire bundle 13R through the left wire spreader 4L and the right wire spreader 4R to form a quasi-single-layer left wire mesh 14L and right wire mesh 14R, and then move and adjust to wind the warp and the front roller The left driving roller 44L and the right driving roller 44R that are close to each other are clamped by the left driving roller 44L, the right driving roller 44R and the front top roller 51 and output in close contact with the front top roller 51. Then the left tow 12L and the right tow 12R are separated from the bottom and the left side respectively; the left silk screen 14L and the right silk screen 14R are separated from the top and the right side respectively; The strip 61L and the right strand 61R are centered through the left bundler 63L and the right bundler 63R, and are fed into the front roller nip 53 synchronously, and after exiting the front roller nip 53, under the action of twisting, they are respectively formed on the left and right paths The left triaxial system composite yarn 71L and the right triaxial system composite yarn 72R of the asymmetric bundle net composite yarn with tow reinforcement and wire mesh protection, the left triaxial system composite yarn 71L and the right triaxial system composite yarn 72R are composited to form a double Bundle net composite yarn 7, as shown in Figure 7c. The yarn hairiness index, twist angle, breaking strength, breaking elongation and yarn fineness irregularity of the spun bright and clean composite yarn are listed in the table below. Among them, the spinning rate is very high, which means that there is very little loss of fibers such as flying flowers, crumbs, and broken ends; the number of hairiness is also very small, which means that the yarn is smooth; Low, indicating good spinnability and high processing efficiency in yarn forming. During the spinning process, there is no obvious fiber loss and fly, and the ring and plate are clean, which proves the effectiveness of this clamping and protecting composite spinning.

Composite Spinning Process Parameters and Quality Indexes for Spinning Asymmetric Composite Yarn with Double Bundle Mesh

Claims (8)

1. A double-bundle net asymmetric composite yarn, characterized in that: it is an asymmetric net-wrapped core-spun yarn of tow/short fiber strands/wire net 3-axis system, an asymmetric net wrapped close to the yarn, or an asymmetric The double-bundle net composite yarn structure of 3×2 asymmetric composite spinning with net-wrapped wrapped yarn and 2-axis compound has three basic forms, namely, asymmetric net-wrapped core-spun composite yarn, asymmetric net-wrapped close-to-close composite yarn and Asymmetric net-wrapped composite yarn, wherein asymmetry means that the linear density of the two filament bundles after splitting is different, the tension of the two bundles of filaments is unequal, and the tension between the two bundles of filaments in the staple fiber At least one of the five conditions of the same side, the two screens on the same side of the short fiber strands, and the positions of the two wire nets relative to the short fiber strands are different; and there are three basic forms of combined double-bundle net composite yarn; The asymmetric net-wrapped core-spun composite yarn is composed of two asymmetric or symmetrical filament bundles located in the center of the two short fiber strands and wrapped by them, and the two wire meshes are supported, covered or separated from the two short fibers. After the strands are wrapped and wrapped, two strands of wire mesh are wrapped around the outside, and the filament bundle is wrapped inside the core-wrapped 3-axis asymmetric net-wrapped core-spun yarn, and then two strands are combined to form a composite yarn of net-wrapped core-spun yarn ; The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles close to the left or right side of the two short fiber strands and intertwisted with them, while the two silk nets are supported, covered or separated. After wrapping the two short fiber strands and filament strands and wrapping them together, a 3-axis asymmetrical mesh wrapping is formed, in which the filament strands are wrapped close to the staple strands and wrapped together. yarn, and then two composite yarns are wrapped in a composite yarn close to the yarn; The said asymmetric net-wrapped composite yarn is composed of two asymmetric or symmetrical filament bundles at a certain distance on the left or right side of the two short fiber strands, and the two silk nets under the support, upper cover or leave the After the two short fiber strands are wrapped and wrapped, the filament bundle is wrapped into a wire mesh wrapped yarn, and the filament bundle is wrapped with a 3-axis asymmetric net wrapped yarn of the wire mesh and the short fiber strands, and then Composite yarn composed of two strands of net-wrapped wrapping yarn; The combined double-bundle net composite yarn refers to any two of the 3-axis asymmetric net-wrapped core yarn, the 3-axis asymmetric net-wrapped yarn, and the 3-axis asymmetric net-wrapped yarn. The composite yarn of the net-wrapped yarn formed by twisting and compounding, that is, the two-by-two combination of the two-by-two combination of the coaxial, close to and separated positions of the filament bundle and the short fiber strands and close to the composite yarn, Net-wrapped and wrapped composite yarn, net-wrapped and core-wrapped composite yarn. 2. a method for composite spinning of double beam net asymmetric composite yarn as claimed in claim 1, characterized in that: The first step is to install the splitter, tension disc (3), and spreader on the ordinary ring spinning frame, and make the spreader close to the front roller (5) to obtain the driving force for guiding the filament (1), among which , the splitter is divided into left splitter (2L) and right splitter (2R), and the yarn spreader is divided into left yarn spreader (4L) and right yarn spreader (4R); The second step is to take the filament (1) and divide it into left filament (1L) and right filament (1R) located in the left and right paths, left filament (1L) and right filament (1R) respectively The left flattened yarn (11L) and the right flattened yarn (11R) are first flattened by the left splitter (2L) and the right splitter (2R), and the left flattened yarn (11L) is split into linear density Unequal left tow (12L) and right mesh tow (13L), at the same time, the right flattened yarn (11R) is split into right tow (12R) and right mesh tow (13R) with different linear densities , where the linear density is the mass per unit length; The third step is to adjust the tension of the split left tow (12L) and right tow (12R) respectively through the tension disc (3), or go up and directly close to the front top roller (51) to feed or be respectively lowered Feed close to the front bottom roller (52), which is the first axis (I); lead the left mesh bundle (13L) and the right mesh bundle (13R) respectively downward or go straight into the left spreader (4L) And the right wire spreader (4R), the left mesh bundle (13L) and the right mesh bundle (13R) are respectively stretched into a quasi-single-layer left wire by the left wire spreader (4L) and the right wire spreader (4R). The net (14L) and the right screen (14R) come out of the clamping place between the left yarn spreader (4L) and the right yarn spreader (4R) and the front bottom roller (52) or the front top roller (51) and are close to the front Bottom roller (52) or front top roller (51) output, this is the second axis (II); The fourth step, the left tow (12L) and right tow (12R) of the first axis (I) from above, below, or from the side; the left wire mesh (14L) of the second axis (II) And the right wire mesh (14R) from below, or above, or from the side; As the third shaft (III) short fiber strands (6), the left strands (61L) and the right strands (61R) respectively Through the centering of the left bundler (63L) and the right bundler (63R), synchronously feed the front roller nip (53), the left strand (61L) and the upward or downward left tow (12L) and/or the downward guide Or straight left wire mesh (14L) forms coaxial or non-axial lamination or distribution arrangement; The wire mesh (14R) forms coaxial or non-axial laminations or distributed arrangements; after exiting the front roller nip (53), under the action of twisting, tow reinforcement and wire mesh wrapping are formed on the left and right paths respectively. Protected left triaxial composite yarn (71L) and right triaxial composite yarn (72R), left triaxial composite yarn (71L) and right triaxial composite yarn (72R) are compounded to form a double-bundle mesh composite yarn ( 7). 3. A compound spinning method according to claim 2, characterized in that: the left splitter (2L) and the right splitter (2R) are connected to a moving rod that can move left and right, up and down (24) on; The left splitter (2L) includes a left yarn guide hook (21L), and the left filament (1L) enters the left flattening roller (22L) through the left yarn guide hook (21L) to be flattened to obtain the flattened yarn (11L), and then split it into the left tow (12L) and the left mesh tow (13L) with different linear densities by the left splitting rod (23L); The right splitter (2R) includes a right yarn guide hook (21R), and the right filament (1R) enters the right flattening roller (22R) through the right yarn guide hook (21R) to be flattened to obtain the flattened yarn (11R), and then split by the right splitting rod (23R) into the right tow (12R) and the right mesh tow (13R) with different linear densities; By moving the left splitter (2L) and the right splitter (2R) left and right on the moving rod (24), the left filament (1L) and the right filament (1R) are adjusted The position of the left filament (1L) and the right filament (1R) can be adjusted synchronously by moving the moving rod (24) left and right, and the left splitter (2L) can be adjusted synchronously by moving up and down ) and the position of the right splitter (2R); the left yarn guide hook (21L) and the right yarn guide hook (21R) can move up and down respectively to adjust the left filament (1L) and the right The wrapping angle θ ₁ of the filament (1R) on the left flattening roller (22L) and the right flattening roller (22R). 4. A composite spinning method as claimed in claim 2, characterized in that: said tension disc (3) includes left tension disc (31L) and right tension disc (31R), left tension disc (31L) and right The tension disc (31R) is sleeved on the hexagonal rod (32), and the hexagonal rod (32) is fixedly connected with the tension disc shifting frame (33) that can move up and down, forward and backward, and a left slider is sleeved on the hexagonal rod (32) (34L) and the right slider (34R), the left rotation bushing (36L) and the right rotation bushing (36R) are respectively sleeved on the left slider (34L) and the right slider (34R), and the left upper guide The wire hook (35L) and the right upward guide wire hook (35R) or the left downward guide wire hook (37L) and the right downward guide wire hook (37R) are respectively fixed on the left rotation sleeve (36L) and the right rotation sleeve (36R) on; After the tension of the left tow (12L) and the right tow (12R) are adjusted through the left tension disc (31L) and the right tension disc (31R) respectively, or through the left upper guide wire hook (35L) and the right upper guide The wire hook (35R) goes up directly close to the front upper roller (51) to feed, or feeds through the left downward guide wire hook (37L) and the right downward guide wire hook (37R) close to the front bottom roller (52). enter; The left descending wire guide hook (37L) and the right descending wire guide hook (37R) are a symmetrical pair of left and right hands. ) and the right slide bar (38R), the upper ends of the left slide bar (38L) and the right slide bar (38R) are fixedly connected with the left slide block (34L) and the right slide block (34R) respectively; The left tow (12L) is adjusted by the left and right movement of the left tension disc (31L) and the left slider (34L) and the right tension disc (31R) and the right slider (34R) synchronously on the hexagonal rod (32). ) and the position and spacing of the right tow (12R); move up and down, back and forth through the hexagonal rod (32) to adjust the upward movement of the left tow (12L) and the right tow (12R) in the The wrapping angle α ₁ on the front top roller (51) or by adjusting the wrapping angle α 2 _of the left tow (12L) and the right tow (12R) descending on the front bottom roller (52); Through the coaxial rotation of the left-turning bushing (36L) and the right-turning bushing (36R) on the left slider (34L) and the right slider (34R), the left tow (12L) and The enveloping angle θ L and the enclosing angle _{θ R of} the right tow ( 12R ) on the left tension disc ( 31L ) and the right tension disc ( 31R ). 5. A composite spinning method as claimed in claim 2, characterized in that: said left spreader (4L) and said right spreader (4R) are connected to movable On the rod (49), wherein, the left wire spreader (4L) includes a left lower guide wire hook (41L) or a left straight guide wire hook (45L), and the left mesh bundle (13L) passes through the left lower guide wire hook ( 41L) or the left straight wire guide hook (45L) is centered to feed the left middle line (43L) on the left spreading roller (42L), so that the left mesh bundle (13L) is spread into a quasi-single layer of left silk Net (14L), one end of the lower left guide wire hook (41L) is fixed to form a fixed end for stable positioning. The fixed end is the left bifurcated end (46L), and the left bifurcated end is connected with the left lower guide rod (47L) , the upper end of the lower left lead rod (47L) is the upper left single loop hook (48L); The right wire spreader (4R) includes a right lower guide wire hook or a right straight guide wire hook (45R), and the right mesh bundle (13R) passes through the right lower guide wire hook or the right straight guide wire hook (45R). Feed the right middle thread (43R) on the right spreading roller (42R) in the middle, so that the right mesh bundle (13R) is unfolded into a quasi-single layer of the right mesh (14R), and one end of the lower right guide wire hook For stable positioning, it is fixedly connected to form a fixed end. The fixed end is a right bifurcated end, and the right bifurcated end is connected with the lower right guide rod, and the upper end of the lower right guide rod is the upper right single-loop hook; Symmetrical herringbone thread grooves are engraved on the surfaces of the left spreading roller (42L) and the right spreading roller (42R), and the connecting lines of the vertices of the herringbone thread grooves are the left middle line (43L) and the right middle line (43R) respectively. ; Adjust the left mesh bundle (13L) and the Wrapping angle θ ₂ of the right wire bundle ( 13R ) to the left spreading roll ( 42L ) and the right spreading roll ( 42R). 6. A composite spinning method as claimed in claim 2, characterized in that: said filament (1) is a filament having the same chemical composition as said short fiber strand (6). 7. A composite spinning method as claimed in claim 2, characterized in that: said filament (1) is one or two kinds of untwisted artificial fiber filament, synthetic fiber filament and natural silk. 8. A composite spinning method as claimed in claim 2, characterized in that: the short fiber strands (6) are roving strips made of short fibers commonly used in textiles, and are passed through the rear roller (9) on the spinning frame Feed, then obtain through the drafting of apron roller (8).