CN113005575B

CN113005575B - Covered yarn spinning device and preparation method of carbon fiber covered yarn

Info

Publication number: CN113005575B
Application number: CN202110249445.3A
Authority: CN
Inventors: 刘宇清; 何宇
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2022-10-18
Anticipated expiration: 2041-03-08
Also published as: CN113005575A

Abstract

The invention relates to a covered yarn spinning device and a preparation method of carbon fiber covered yarn. The carbon fiber covered yarn comprises a core yarn, a first outer covering layer and a second outer covering layer are sequentially covered outside the core yarn, and the preparation method comprises the following steps: after being supplied by a core yarn feeding mechanism of the first group of spinning units, the core yarns sequentially pass through the first pore canal and the second pore canal and are supplied along the linear direction; the outer covering yarn in the first outer covering layer is fed by an outer covering yarn bobbin and then enters a yarn leading device, and an outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through the yarn leading device and spirally wind the outer covering yarn outside the core yarn to form the core yarn covered with the first outer covering layer; and continuously preparing a second outer coating outside the first outer coating according to the method to form the carbon fiber coated yarn.

Description

Covered yarn spinning device and preparation method of carbon fiber covered yarn

Technical Field

The invention relates to the field of yarn production, in particular to a covered yarn spinning device and a preparation method of carbon fiber covered yarn.

Background

The covered yarn is also called wrapping yarn, and is a yarn with a novel structure, which takes filament or short fiber as a yarn core, is wrapped with another filament or short fiber yarn strip, and the wrapped yarn covers the core yarn in a spiral mode. The covering yarn is mainly used for knitted fabrics requiring high elasticity, is partially used for woven fabrics, and is ideal yarn of high-grade thin wool, linen fabrics, jacquard double-layer weft knitted fabrics, warp knitted fabrics and the like. Depending on the application, the cover yarn may be selected to be a core yarn or an outer cover yarn having a higher strength than either of the individual yarns.

The existing covering yarn has the problems of single outer covering layer, core leakage caused by single-layer covering and inconvenient covering means. Chinese patent CN 202530221U introduces an antibacterial covered yarn of composite nylon, wherein a core yarn is nylon, an outer layer is covered by three pieces of nylon, one of the three pieces of nylon is antibacterial nylon, the composite yarn has a single function, and in addition, the single-layer covering easily has the problem of core leakage, so that the possibility of yarn breakage is improved. Chinese patent CN 211339813U introduces a multifunctional yarn, wherein the center of the inner core layer is provided with a plurality of rayon, the rayon is twisted with each other, the outer side of the rayon is provided with a layer of elastic rubber band, the middle layer is spirally wound on the elastic rubber band by a plurality of fibers, the outer skin layer is alternately distributed by antibacterial fibers and wear-resistant fibers, and hollow gaps are left between the inner core layer, the middle layer and the outer skin layer.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a covered yarn spinning device and a preparation method of carbon fiber covered yarns.

A first object of the present invention is to provide a covered yarn spinning device for preparing a covered yarn having a plurality of coverings, the covered yarn spinning device comprising at least two sets of spinning units, each spinning unit comprising:

a core yarn feeding mechanism for feeding a core yarn;

the outsourcing yarn feeding mechanism comprises a rack and a plurality of outsourcing yarn spools arranged on the surface of one side of the rack, wherein the center of the rack is provided with a first pore channel extending along the axis of the rack;

the outsourcing yarn straightening mechanism comprises a yarn guiding device, the outsourcing yarn straightening mechanism rotates around the axis of the outsourcing yarn guiding device, the yarn guiding device is provided with a plurality of outsourcing yarn guiding holes, and the center of the outsourcing yarn straightening mechanism is provided with a second pore channel extending along the axis of the outsourcing yarn guiding hole; the yarn guide device surrounds the outside of the second pore channel, the first pore channel is opposite to the second pore channel, and the core yarn sequentially passes through the first pore channel and the second pore channel after being supplied by the core yarn feeding mechanism; the outer covering yarn is fed by an outer covering yarn spool and then enters a yarn guide, and the outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through a yarn guide on the yarn guide and spirally winds the outer covering yarn outside the core yarn to form the covering yarn;

the outer covering yarn straightening mechanism of the front group of spinning units is connected with the core yarn feeding mechanism of the rear group of spinning units along the core yarn conveying direction, and the covering yarn formed by the front group of spinning units is used as the core yarn of the rear group of spinning units.

Further, the yarn guide is a gear with a hollow shaft.

Further, the core yarn feeding mechanism, the outer package yarn feeding mechanism and the outer package yarn straightening mechanism are connected through a linkage pipe. The connecting pipe is arranged in the first hole channel, the first hole channel and the hollow shaft in a penetrating mode.

Further, the covered yarn spinning device further comprises a treating agent applicator provided on a side of the yarn guide away from the covered yarn feeding mechanism, the treating agent applicator being for applying a treating agent to the covered yarn.

Further, the covered yarn spinning device further comprises a covered yarn shaping mechanism for shaping the covered yarn. The wrap yarn setting mechanism includes a heater, such as a hot air blower or an oven. The heater is used for heating the covering yarn.

Further, the covered yarn spinning device further includes a fiber collecting mechanism for drafting and collecting the covered yarn.

The second purpose of the invention is to provide a carbon fiber covered yarn, which comprises a core yarn, wherein a first outer covering layer and a second outer covering layer are sequentially covered outside the core yarn, the core yarn comprises carbon fibers, the first outer covering layer comprises bamboo pulp fibers and chitin fibers, the second outer covering layer comprises chinlon, acrylic fibers and terylene, and the radial spiral angle of the yarns in the first outer covering layer and the second outer covering layer relative to the core yarn is 30-60 degrees.

Furthermore, the core yarn is formed by twisting 2-4 carbon fibers, and the twist angle is 20-40 degrees. Twisting can greatly improve the structural strength of the wrap yarn.

Furthermore, the first outer cladding layer is formed by sequentially and alternately twisting bamboo pulp fibers and chitin fibers, wherein the number of the bamboo pulp fibers is 2-8, and the number of the chitin fibers is 2-8. Because the excellent structural characteristics of the bamboo pulp fiber can absorb certain odor, and the chitin fiber has the sterilization function and can prevent infection and infection, the first outer covering layer endows the carbon fiber covered yarn with certain antibacterial and deodorizing performance.

Furthermore, the second outer cladding is formed by alternately twisting nylon, acrylic fiber and terylene in turn, and the total number of the fibers of the second outer cladding is 6-18. The yarns of acrylic fiber, nylon, terylene, vinylon and the like can further improve the physical and chemical properties of the carbon fiber composite yarn.

Further, the area of the cross section of the core yarn is 30 to 70%, the area of the cross section of the first outer covering layer is 10 to 30%, and the area of the cross section of the second outer covering layer is 20 to 40% based on the total area of the cross sections of the carbon fiber covered yarns.

The carbon fiber covered yarn takes the carbon fiber as the core yarn, the carbon fiber is lighter than metal aluminum in mass, but higher in strength than steel, has the characteristics of corrosion resistance and high modulus, provides main structural strength for the covered yarn, and ensures that the composite yarn has certain antistatic performance due to the excellent electric conductivity of the carbon fiber.

The third purpose of the invention is to provide a preparation method of the carbon fiber covered yarn, which is prepared by the covered yarn spinning device of the invention, the covered yarn spinning device comprises a first group of spinning units and a second group of spinning units which are arranged in sequence, and the preparation method of the carbon fiber covered yarn comprises the following steps:

after being supplied by a core yarn feeding mechanism of the first group of spinning units, the core yarns sequentially pass through a first pore canal and a second pore canal of the first group of spinning units and are supplied along the linear direction; feeding the outer covering yarns in the first outer covering layer into a yarn leading device after the outer covering yarns are fed by a yarn spool of the outer covering yarns, and driving the outer covering yarns to rotate relative to the core yarns and spirally wind the outer covering yarns outside the core yarns by a yarn leading device by a yarn straightening mechanism to form the core yarns coated with the first outer covering layer;

after being supplied by a core yarn feeding mechanism of a second group of spinning units, the core yarns coated with the first outer cladding layer sequentially pass through a first pore passage and a second pore passage of the second group of spinning units, and are supplied along the linear direction; and feeding the outer covering yarns in the second outer covering layer into a yarn guiding device after the outer covering yarns are fed from a yarn bobbin of the outer covering yarns, and driving the outer covering yarns to rotate relative to the core yarns and spirally wind the outer covering layers outside the first outer covering layer by the outer covering yarn straightening mechanism through the yarn guiding device to form the carbon fiber covering yarns.

Furthermore, the rotating speed of the outer covering yarn relative to the core yarn is 90-240r/min.

Further, after forming the core yarn and the carbon fiber-covered yarn covered with the first covering layer, a step of applying a treating agent including an organic solvent to the core yarn and the carbon fiber-covered yarn of the first covering layer using a treating agent applicator is further included. The organic solvent can make the fibers tightly cohere, thereby improving the bonding performance among the fibers. The application mode of the organic solvent can be selected from immersion, spraying and dripping modes.

Further, the organic solvent may be one or more of methanol, ethanol, acetone, diethyl ether, ethyl acetate, and chloroform.

Further, the method further comprises the step of heating the carbon fiber covered yarn after the treating agent is applied to the carbon fiber covered yarn. Heating can volatilize the organic solvent and set the fiber. The heating temperature is 80-100 ℃.

The composite yarn prepared by the equipment has multiple functions, and the first outer cladding and the second outer cladding can be correspondingly changed according to the use requirements, so that different requirements can be met simultaneously. The first outer covering layer can endow the composite yarn with antibacterial and deodorant properties, and the second outer covering layer endows the yarn with certain physical and chemical properties.

By means of the scheme, the invention at least has the following advantages:

the invention provides a covered yarn spinning device, which can be used for simultaneously spirally covering core yarns by using a plurality of outer covered yarns, has simple and quick technical process, can realize full-automatic production, and greatly improves the spinning efficiency of the covered yarns. In the preparation process, the fibers with different functions on the yarn spool for the outer covering yarn can be replaced according to different use requirements, so that the first outer covering layer and the second outer covering layer which are made of different materials are prepared, and the preparation process is simple and controllable.

The invention provides a carbon fiber covered yarn, which is characterized in that the excellent physical and chemical properties of carbon fibers are blended with other functional fibers through a simple covering technology, the carbon fibers are used as core yarns to provide main strength, and an outer covering layer is configured according to the use requirement.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following description is made with reference to the preferred embodiments of the present invention and the accompanying detailed drawings.

Drawings

FIG. 1 is a schematic view of a covered yarn spinning apparatus and a spinning principle;

figure 2 is a schematic view of the structure of the yarn guide;

FIG. 3 is a schematic structural view of an outsourcing yarn feeding mechanism;

FIG. 4 is a schematic side view of a carbon fiber covered yarn according to one embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a carbon fiber covered yarn of example 3 of the present invention;

description of the reference numerals:

20-a frame; 21-an outer wrap yarn bobbin; 30-a yarn puller; 31-a yarn guide; 40-a treating agent applicator; 50-a heater; 100-core yarn; 200-wrapping yarn; 300-a core yarn covered with a first covering; 400-a covered yarn having a plurality of outer coverings; 101-carbon fibers; 201-bamboo pulp fiber; 202-chitin fibers; 301-chinlon.

Detailed Description

The following examples are given to further illustrate the embodiments of the present invention. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, a covered yarn spinning apparatus for preparing a covered yarn 400 having a plurality of covering layers includes a first group of spinning units and a second group of spinning units arranged in sequence, wherein each group of spinning units includes a core yarn feeding mechanism, a covering yarn feeding mechanism and a covering yarn straightening mechanism arranged in sequence, wherein the covering yarn straightening mechanism of the first group of spinning units is connected with the core yarn feeding mechanism of the second group of spinning units.

The core yarn feeding mechanism is used for feeding the core yarn. The core yarn 100 of the first set of spinning cells is carbon fiber. In the second group of spinning units, the core yarn is the core yarn 300 coated with the first covering layer formed by the first group of spinning units.

The outsourcing yarn feeding mechanism comprises a disc-shaped frame 20 and a plurality of outsourcing yarn spools 21 arranged on the surface of one side of the frame 20. The housing 20 has a first aperture extending centrally along its axis. The outer covering yarn bobbin 21 is used for supplying the outer covering yarn 200, and the outer covering yarn bobbins 21 are spaced apart in the circumferential direction around the axis of the frame 20. The frame 20 rotates around the axis thereof and drives the outer covering yarn bobbin 21 thereon to rotate around the axis of the frame 20.

The outsourcing yarn straightening mechanism comprises a disc, a yarn guide 30 is arranged on the disc, and the outsourcing yarn straightening mechanism rotates around the axis of the outsourcing yarn straightening mechanism. The yarn puller 30 has a plurality of covering yarn guide holes for the covering yarn to pass through. The center of the outer covering yarn straightening mechanism is provided with a second pore canal extending along the axis of the outer covering yarn straightening mechanism; the yarn guide 30 surrounds the outside of the second duct, and the first duct is arranged opposite to the second duct. The side of the yarn guide 30 far away from the outer covering yarn feeding mechanism is provided with a yarn guide 31, and the yarn guide 31 is a gear with a hollow shaft. When the outsourcing yarn straightening mechanism rotates around the axis of the outsourcing yarn straightening mechanism, the yarn guiding device 30 rotates around the same axis, so that the outsourcing yarn is driven to move along the spiral direction. The core yarn supplied by the core yarn bobbin moves linearly along the axis direction of the core yarn and sequentially passes through the first pore channel and the second pore channel; the outer covering yarn is fed by an outer covering yarn spool 21 and then enters a yarn leading device 30, the outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through the yarn leading device 30 and spirally wind the outer covering yarn outside the core yarn to form covering yarn, and the covering yarn is shaped after reaching a covering yarn shaping mechanism. The core yarn feeding mechanism, the outer covering yarn feeding mechanism and the outer covering yarn straightening mechanism are connected through a linkage pipe. The connecting pipe is arranged in the first hole channel, the first hole channel and the hollow shaft in a penetrating mode.

The first group of spinning units and the second group of spinning units are respectively provided with a treating agent applicator 40, the treating agent applicator 40 is arranged on one side of the yarn guide 31 far away from the outer covering yarn feeding mechanism, and the treating agent applicator 40 is used for applying treating agents to the covering yarns.

The covered yarn spinning device further comprises a covered yarn shaping mechanism for shaping the covered yarn. The covered yarn setting mechanism includes a heater 50, such as a hot air blower or oven. The heater 50 is used to heat the covering yarn. The heater 50 may alternatively be a blower.

The covered yarn spinning device further includes a fiber collecting mechanism for drafting and collecting the covered yarn.

Example 2

The carbon fiber covered yarn comprises a core yarn, wherein a first outer covering layer and a second outer covering layer are sequentially covered outside the core yarn. The core yarn is formed by twisting 3 carbon fibers 101, and the twisting angle is 30 degrees. The first outer covering layer is formed by twisting 2 bamboo pulp fibers 201 and 2 chitin fibers 202. The second outer cladding is formed by twisting 6 chinlon 301. The yarns in the first and second outer claddings have a helix angle of 45 ° and 60 ° with respect to the radial direction of the core yarn, respectively. The first outer cladding layer is S-twisted, and the second outer cladding layer is Z-twisted.

The preparation process of the carbon fiber covered yarn comprises the following steps:

(1) The twisted carbon fiber 101 sequentially passes through a first channel and a second channel of a first group of spinning units, 2 bamboo pulp fibers 201 and 2 chitin fibers 202 are respectively assembled on an outer covering yarn bobbin 21 of the first group of spinning units, the two fibers are sequentially and alternately assembled, and 6 chinlon 301 are assembled on an outer covering yarn bobbin 21 of a second group of spinning units. The rotation speed of the outer covering yarn bobbin 21 was set to 120r/min. The outer covering yarns in the first outer covering layer are fed into the yarn guiding device 30 through the outer covering yarn bobbin 21, the outer covering yarn straightening mechanism drives the outer covering yarns to rotate relative to the core yarns through the yarn guiding device 30 and spirally wind the outer covering yarns outside the core yarns to form the core yarns covered with the first outer covering layer.

(2) After being supplied by a core yarn feeding mechanism of a second group of spinning units, the core yarns coated with the first outer cladding layer sequentially pass through a first pore passage and a second pore passage of the second group of spinning units, and are supplied along the linear direction; the outer covering yarn in the second outer covering layer is fed through an outer covering yarn bobbin 21 and then enters a yarn guiding device 30, and an outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through the yarn guiding device 30 and spirally wind the outer covering yarn outside the first outer covering layer to form the carbon fiber covering yarn.

After the core yarn and the carbon fiber-covered yarn covered with the first covering layer are formed to make the structure between the fibers compact, ethanol is respectively dropped thereto by the treating agent applicator 40. After the ethanol is dripped into the carbon fiber coated yarn, the fiber is dried by a blower, so that the volatilization of the organic solvent is accelerated.

Example 3

The carbon fiber covered yarn comprises a core yarn, wherein a first outer covering layer and a second outer covering layer are sequentially covered outside the core yarn. The core yarn is formed by twisting 3 carbon fibers, and the twist angle is 30 degrees. The first outer coating layer is formed by twisting 4 bamboo pulp fibers and 4 chitin fibers. The second outer cladding is formed by twisting 8 chinlon. The helical angles of the yarns in the first outer cladding and the second outer cladding relative to the radial direction of the core yarn are 45 degrees and 60 degrees respectively, the twisting direction of the first outer cladding is S-twist, and the twisting direction of the second outer cladding is Z-twist.

The above-described carbon fiber covered yarn was produced in the same manner as in example 2, except that the first and second groups of spinning units were provided with covering yarns of the respective materials and numbers.

Example 4

The carbon fiber covered yarn comprises a core yarn, wherein a first outer covering layer and a second outer covering layer are sequentially covered outside the core yarn. The core yarn is formed by twisting 3 carbon fibers, and the twisting angle is 30 degrees. The first outer coating layer is formed by twisting 4 bamboo pulp fibers and 4 chitin fibers. The second outer cladding is formed by twisting 6 chinlon fibers and 6 cotton fibers. The helical angles of the yarns in the first outer cladding and the second outer cladding relative to the radial direction of the core yarn are 45 degrees and 60 degrees respectively, the twisting direction of the first outer cladding is S-twist, and the twisting direction of the second outer cladding is Z-twist.

The above-described carbon fiber-covered yarn was produced in the same manner as in example 2, except that covering yarns of the respective materials and numbers were assembled in the first group of spinning units and the second group of spinning units.

Comparative example 1

A carbon fiber covered yarn comprises a core yarn, wherein an outer covering layer is covered outside the core yarn. The core yarn is formed by twisting 3 carbon fibers, and the twist angle is 30 degrees. The outer cladding layer is formed by twisting 6 chinlon. The yarns in the outer cladding have respective spiral angles of 45 DEG and 60 DEG with respect to the radial direction of the core yarn, the first outer cladding twist direction is S twist, and the second outer cladding twist direction is Z twist.

The preparation method was the same as in example 2, except that the second set of spinning units was omitted and the first set of spinning units was used to prepare a carbon fiber covered yarn containing only one outer covering.

Comparative example 2

The procedure is as in example 2, except that only the fibers in the second outer layer are changed to cotton fibers.

The antibacterial performance and strength of the samples of example 2, example 3 and example 4 and comparative example 1 were tested, and the specific results are shown in table one.

Table one: results of tests on antibacterial performance and strength of different carbon fiber covered yarns

The fabrics woven from the example 2, the example 3, the example 4 and the comparative example 2 are subjected to abrasion resistance tests, and the specific results are shown in the table II.

Table two: abrasion resistance test results of different carbon fiber covered yarns

	Example 2	Example 3	Example 4	Comparative example 2
					Wear resistance	Non-fluffing	Non-fluffing	Slight fuzzing	High fuzz

In the above tests, the strength performance test indexes are as follows: GB/T3916-2013 determination of breaking strength and breaking elongation of single yarn of textile package yarn; and (3) reference of antibacterial performance test indexes: GB/T20944.3-2008, evaluation of antibacterial performance of textiles, part 3, oscillation method; and the wear resistance test indexes refer to: GB/T21196.2-2007 determination of abrasion resistance of fabrics by Martindale method part 2: measurement of specimen breakage.

Therefore, the carbon fiber covered yarn prepared by the invention has simple preparation method, accords with industrial production, the core yarn is formed by twisting carbon fibers, provides main strength for the yarn, the first outer covering layer is composed of antibacterial deodorizing fibers, endows the composite yarn with certain health and cleanness functions, the second outer covering layer is composed of nylon, acrylic fibers and terylene, endows the yarn with wear resistance, heat retention and the like, and the double-layer covering overcomes the problem of core leakage of the composite yarn and reduces the possibility of yarn breakage. In addition, in the preparation process of the composite yarn, the functional fiber of the outer cladding can be replaced according to the use requirement of consumers, and the operation method is simple, convenient and quick.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A carbon fiber covered yarn is characterized in that: the core yarn comprises a core yarn, wherein a first outer cladding layer and a second outer cladding layer are sequentially wrapped outside the core yarn, the core yarn comprises carbon fibers, the first outer cladding layer comprises bamboo pulp fibers and chitin fibers, the second outer cladding layer comprises one or more of chinlon, acrylic fibers and terylene, and the radial spiral angle of the yarns in the first outer cladding layer and the second outer cladding layer relative to the core yarn is 30-60 degrees;

the carbon fiber covered yarn is prepared by adopting a covered yarn spinning device, the covered yarn spinning device comprises a first group of spinning units and a second group of spinning units which are sequentially arranged, and the first group of spinning units and the second group of spinning units respectively comprise:

a core yarn feeding mechanism for feeding a core yarn;

the outsourcing yarn feeding mechanism comprises a rack and a plurality of outsourcing yarn spools arranged on the surface of one side of the rack, wherein a first hole channel extending along the axis of the rack is formed in the center of the rack, the rack rotates around the axis of the rack, the outsourcing yarn spools are used for supplying outsourcing yarns, and the outsourcing yarn spools are distributed at intervals along the circumferential direction around the axis of the rack;

the outsourcing yarn straightening mechanism comprises a yarn guiding device, the outsourcing yarn straightening mechanism rotates around the axis of the outsourcing yarn guiding device, the yarn guiding device is provided with a plurality of outsourcing yarn guiding holes, and the center of the outsourcing yarn straightening mechanism is provided with a second pore channel extending along the axis of the outsourcing yarn guiding hole; the yarn guide device surrounds the outside of the second pore channel, the first pore channel is opposite to the second pore channel, and the core yarn sequentially passes through the first pore channel and the second pore channel after being supplied by the core yarn feeding mechanism; the outer covering yarn is fed by the outer covering yarn spool and then enters the yarn guiding device, and the outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through the yarn guiding device on the yarn guiding device and spirally winds the outer covering yarn outside the core yarn to form the covering yarn;

the outer covering yarn straightening mechanism of the first group of spinning units is connected with the core yarn feeding mechanism of the second group of spinning units along the core yarn conveying direction, and the covering yarn formed by the first group of spinning units is used as the core yarn of the second group of spinning units;

the preparation method of the carbon fiber covered yarn comprises the following steps:

after being supplied by a core yarn feeding mechanism of a first group of spinning units, the core yarn sequentially passes through the first pore passage and the second pore passage, and the core yarn is supplied along the linear direction; the outer covering yarns in the first outer covering layer are fed by the outer covering yarn spool and then enter the yarn guide, and the outer covering yarn straightening mechanism drives the outer covering yarns to rotate relative to the core yarns through the yarn guide on the yarn guide and spirally wind the outer covering yarns outside the core yarns to form the core yarns coated with the first outer covering layer;

after being supplied by a core yarn feeding mechanism of a second group of spinning units, the core yarn coated with the first outer cladding layer sequentially passes through the first pore channel and the second pore channel, and the core yarn is supplied along the linear direction; the outer covering yarn in the second outer covering layer is fed by the outer covering yarn bobbin and then enters the yarn guiding device, and the outer covering yarn straightening mechanism drives the outer covering yarn to rotate relative to the core yarn through the yarn guiding device on the yarn guiding device and spirally winds the outer part of the first outer covering layer to form the carbon fiber covering yarn;

the covered yarn spinning device also comprises a treating agent applying device which is arranged on one side of the yarn guide far away from the covered yarn feeding mechanism;

after forming the core yarn and the carbon fiber-covered yarn covered with the first covering layer, further comprising the step of applying a treating agent to the core yarn and the carbon fiber-covered yarn of the first covering layer with a treating agent applicator, the treating agent including an organic solvent;

the method further comprises the step of heating the carbon fiber covered yarn after the treating agent is applied to the carbon fiber covered yarn.

2. The carbon fiber covered yarn according to claim 1, wherein: the core yarn feeding mechanism, the outer covering yarn feeding mechanism and the outer covering yarn straightening mechanism are connected through a linkage pipe.

3. The carbon fiber covered yarn according to claim 1, wherein: the covered yarn spinning device further includes a fiber collecting mechanism for drafting and collecting the covered yarn.

4. The carbon fiber covered yarn according to claim 1, wherein: the rotating speed of the covering yarn relative to the core yarn is 90-240r/min.