CN111395022B - Light high-strength multi-core composite structure rope core and production method thereof - Google Patents
Light high-strength multi-core composite structure rope core and production method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2052—Cores characterised by their structure
- D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
- D07B2201/2057—Cores characterised by their structure comprising filaments or fibers resulting in a twisted structure
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2047—Cores
- D07B2201/2066—Cores characterised by the materials used
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/10—Natural organic materials
- D07B2205/103—Animal and plant materials
- D07B2205/106—Manila, hemp or sisal
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/20—Organic high polymers
- D07B2205/201—Polyolefins
- D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
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Abstract
The invention discloses a light high-strength multi-core composite structure rope core and a production method thereof, wherein the light high-strength multi-core composite structure rope core consists of 4 core-spun yarns and 1 rope core yarn; the core yarn of the core-spun yarn adopts 0.8g/m sisal yarn, the core-spun yarn is subjected to oil immersion treatment, the cladding yarn adopts 4 wires of 4800D ultra-high molecular weight polyethylene filament twisted, and the core-spun yarn is twisted by a double twisting mechanism to form the core-spun yarn; the rope core yarn is 1.4g/m sisal yarn and is subjected to oil immersion treatment; the specification of the light high-strength multi-core composite structure rope core is as follows: 13g/m, the diameter is 8mm, and the twisting direction of the double twist is opposite to that of the spindle. The multi-core composite structure rope core has smooth surface, light weight, high strength, good wear resistance, uniform oil bearing and stable structure; in the production process, the integration of wire making and rope making is realized, the production flow is short, the efficiency is high, and the energy is saved.
Description
Technical Field
The invention belongs to the field of yarn production, and particularly relates to a light high-strength multi-core composite structure rope core and a production method thereof.
Background
The sisal fiber has the characteristics of long fiber, pure white color, tough texture, high elasticity, high strength, good wear resistance and the like, can be used for preparing various sisal products with the characteristics of friction resistance, acid and alkali resistance, corrosion resistance and difficult slipping, and can be used for preparing ropes, polishing wheels, carpets, sisal wallpaper, steel wire rope cores, paper currency, artware and the like. The sisal fiber is used as hard fiber, the length is generally between 60 and 120cm, and sisal yarn is mainly spun by adopting sisal spinning special equipment. Due to the unique performance characteristics of sisal fibers, sisal fibers cannot be mixed with other fibers for spinning. In order to realize fiber mixing, filaments or yarns of other fibers and sisal fibers are mainly used, and the mixed yarns are realized by adopting methods such as core spun yarns or sirofil spinning and twisting. Sisal blended spinning related references are as follows:
a composite sisal hemp rope core of a steel wire rope for an elevator and a preparation method thereof (zl201910088680.X) are disclosed.
The high-strength and light-weight steel wire composite rope core for the elevator and the preparation method thereof (zl201910088684.8) disclose a high-strength and light-weight steel wire composite rope core for the elevator and the preparation method thereof, wherein hemp, ultra-high molecular weight polyethylene and basalt fiber are adopted as raw materials for weaving, the composite rope core is formed by twisting 36 hemp composite core strands for multiple times, and each hemp composite core strand is composed of hemp filaments, adsorption fibers and ultra-high molecular weight polyethylene/basalt core-spun yarns in a certain proportion.
A novel steel wire rope core and a production method (201910401818.7) thereof, and discloses a novel steel wire rope core and a production method thereof, comprising the following steps: picking up ramie → combing ramie (adding water) → drawing → spinning → stranding (soaking oil) → rope twisting → warehousing. The spinning machine adopts a sisal hemp spinning machine which is technically improved, the drafting part adopts a drafting system of a TGS0950 type sisal hemp spinning machine, and the twisting part is improved into a twisting roller type self-twisting spinning twisting winding device: feeding raw materials, namely sisal fiber, and chemical fiber filament, to form self-twisting spinning of the chemical fiber filament and the sisal fiber, and twisting, oiling and rope making. High-strength high-modulus low-elongation polyester filament yarns and ultrahigh molecular weight polyethylene filament yarns are added in the spinning process respectively, wherein the ultrahigh molecular weight polyethylene filament yarns are pretreated, and the polyester filament yarns and the ultrahigh molecular weight polyethylene filament yarns are trilobal structural sections. The drafting system of the spinning machine adopts two yarn strips which are fed in parallel, wherein one sisal fiber strip is fed and drafted by the drafting system, and the other chemical fiber filament is directly fed from a front roller.
A novel oil-containing steel wire rope core with a sisal/synthetic fiber composite structure and a preparation method (zl201910401819.1) thereof disclose the novel oil-containing steel wire rope core with the sisal/synthetic fiber composite structure and the preparation method thereof, and the method comprises the following steps: step one, forming sisal/terylene siro-like-film yarns; step two, forming high-strength high-modulus low-elongation polyester filament yarns; step three, forming ultra-high molecular weight polyethylene filament yarns; step four, forming a sisal hemp/terylene siro-film yarn and a terylene yarn plied yarn; step five, forming a sisal/terylene siro-film yarn and an ultrahigh molecular weight polyethylene yarn strand; and step six, forming a novel steel wire rope core with a sisal/synthetic fiber composite structure.
The four patent documents respectively introduce four sisal hemp blended yarns, the production process mainly comprises the procedures of sisal hemp spinning, twisting, rope twisting and the like, and the sisal hemp blended yarns are mainly realized by methods of core-spun yarns, Sirofil spinning, doubling and the like by adopting chemical fiber filaments and sisal hemp fibers.
A layered independent yarn feeding double-twisting spindle (application number: 201520761746.4) is disclosed, which can save the doubling process and has the characteristics of high efficiency, good stability, low cost and simple operation. The two-for-one twisting machine comprises a two-for-one twisting spindle which is arranged on a base and provided with a lower yarn tank, and a lower tension tube which is coaxially arranged in an inner cavity of the lower yarn tank and provided with a first guider, wherein the top of the lower yarn tank is fixedly connected with an upper yarn tank which is coaxially arranged with the lower yarn tank through a plug structure, and an upper tension tube which is coaxially arranged with the lower tension tube and provided with a second guider is arranged in an inner cavity of the upper yarn tank.
A two-for-one twisting composite twisting machine (application number: 201420266699.1) is disclosed, which has at least one composite doubling unit, the composite doubling unit includes twisting spindle, doubling guide hook, drawing roller, guide hook, doubling spindle and doubling ring.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the prior art, the invention provides a light high-strength multi-core composite structure rope core and a production method thereof.
The technical scheme is as follows: a light high-strength multi-core composite structure rope core is composed of 4 core-spun yarns A, a core-spun yarn B, a core-spun yarn C, a core-spun yarn D and 1 rope core yarn E;
the core yarns of the core-spun yarn A, the core-spun yarn B, the core-spun yarn C and the core-spun yarn D adopt 0.8g/m sisal yarns, and are subjected to oil immersion treatment; the core-spun yarn A, the core-spun yarn B, the core-spun yarn C and the core-spun yarn D are respectively made of 4 twisted yarns of 4800D ultra-high molecular weight polyethylene filaments, the core-spun yarn is formed by twisting through a double twisting mechanism, the speed of a double twisting spindle is 600r/min, and the twist degree is 40T/M;
the rope core yarn E adopts 1.4g/M sisal yarn, and is subjected to oil immersion treatment, the spindle speed is 660r/min, and the twist is 22T/M;
the specification of the light high-strength multi-core composite structure rope core is as follows: 13g/m, the diameter is 8mm, and the twisting direction of the double twist is opposite to that of the spindle.
The multi-core composite structure rope core machine of the light high-strength multi-core composite structure rope core comprises three mechanisms: a double-twist twisting mechanism, a rope core yarn feeding mechanism and a spindle twisting winding mechanism; wherein, each multicore composite structure rope core machine is provided with 4 sets of double-twist twisting mechanisms with the same structure to respectively form A, B, C, D four core-spun yarns;
the double-twisting mechanism comprises an upper layer yarn bank, a lower layer yarn bank, a double-twisting spindle and a yarn leading roller; the rope core yarn feeding mechanism comprises rope core yarns and a tension rod; the spindle twisting and winding mechanism comprises a yarn guide roller, a yarn guide plate, a spindle and a bobbin;
in the double-twisting mechanism, 4 yarn storage barrels are arranged on the lower layer yarn storehouse and can be used for respectively placing 4 cone yarns, and the 4 cone yarns are led into a double-twisting spindle through a middle core hole; the yarn of the upper yarn bank is used as core yarn, 4 yarns of the lower yarn bank are used as cladding yarn, and core-spun yarn is formed by rotary twisting of a double-twist spindle; the formed 4 core-spun yarns A, B, C and D are respectively led into a yarn guide plate through a yarn guide roller and a yarn guide roller;
in the rope core yarn feeding mechanism, the rope core yarn E is introduced into the yarn guide plate sequentially through the rope core yarn and the tension rod;
in the spindle twisting and winding mechanism, the yarn guide plate is positioned right above the spindle top hole, 5 yarn guide holes are formed in the yarn guide plate and respectively correspond to 4 core-spun yarns A, 4 core-spun yarns B, 4 core-spun yarns C, 4 core-spun yarns D and 1 rope core yarn E, and the yarn guide hole of the rope core yarn E is positioned in the center of the yarn guide plate;
4 core-spun yarns A, B, C and D enter a spindle top hole vertically below through a yarn guide plate, the spindle rotates to twist four yarns, the cord yarn E is in the center and is wrapped in the center by the core-spun yarns A, B, C and D, the spindle is in motion fit with the bobbin, and the twisted yarns are wound on the bobbin to form the light high-strength multi-core composite structure cord.
The production process of the light high-strength multi-core composite structure rope core comprises the following steps:
step one, in a double-twisting mechanism, yarns in an upper layer yarn bank are used as core yarns, 4 yarns in a lower layer yarn bank are used as cladding yarns, and core-spun yarns are formed through rotary twisting of a double-twisting spindle; the formed 4 core-spun yarns A, B, C and D are respectively led into a yarn guide plate through a yarn guide roller and a yarn guide roller;
step two, in the cord yarn feeding mechanism, cord yarn E is led into a yarn guide plate through cord yarn and a tension rod in sequence;
and step three, in a spindle twisting and winding mechanism, 4 core-spun yarns A, B, C and D enter a spindle top hole vertically below through a yarn guide plate, the spindle rotates to twist four yarns, the core-spun yarn E is in the center and is wrapped in the center by the core-spun yarns A, B, C and D, the spindle is in motion fit with a bobbin, and the twisted yarns are wound on the bobbin to form the light high-strength multi-core composite structure rope core.
Has the advantages that: the multi-core composite structure rope core has smooth surface, light weight, high strength, good wear resistance, uniform oil bearing and stable structure; in the production process, the integration of wire making and rope making is realized, the production flow is short, the efficiency is high, and the energy is saved.
The sisal yarns are uniformly dispersed in the rope, each sisal yarn is subjected to oil immersion treatment, and the whole rope core is uniformly subjected to oil.
The ultra-high molecular weight polyethylene filament is twisted, so that on one hand, the strength of the ultra-high molecular weight polyethylene filament can be better exerted, on the other hand, the filament is twisted and then wrapped on the surface of the core yarn, so that the surface of the core yarn is easy to form a capillary effect, and grease can move conveniently.
According to the rope core with the multi-core composite structure, the plurality of sisal yarns are used as the core, each sisal yarn is subjected to oil immersion treatment, the sisal yarns are uniformly distributed in the rope core, the ratio of the sisal yarns to the rope core is about 1/4, and the oil content is sufficient.
The core yarn of the core-spun yarn is sisal yarn, and the surface of the core-spun yarn is the twisted yarn of the ultra-high molecular weight polyethylene filament after oiling treatment. The rope core is sisal yarn, and the core-spun yarn is coated outside after oiling treatment. The sisal yarns are uniformly dispersed in the rope, each sisal yarn is subjected to oil immersion treatment, and the whole rope is uniformly oiled.
The ultra-high molecular weight polyethylene filament is twisted, so that on one hand, the strength of the ultra-high molecular weight polyethylene filament can be better exerted, on the other hand, as the surface of the filament is wrapped on the surface of the core yarn after being twisted, the surface of the filament is easy to form a capillary effect, so that grease can move conveniently, and on the other hand, the ultra-high molecular weight polyethylene filament is wrapped on the surface of the sisal yarn after being twisted, so that the wear resistance of the sisal yarn is improved, and the surface burrs of the sisal yarn are inhibited.
Drawings
FIG. 1 is a schematic structural view of a multi-core composite structure cord machine of the present invention;
FIG. 2 is a schematic view of the construction of the lower yarn store of the present invention;
FIG. 3 is a schematic cross-sectional view of the core-spun yarn of the present invention;
FIG. 4 is a schematic view of the yarn guide plate structure of the present invention;
fig. 5 is a schematic cross-sectional structure of the multi-core composite structure rope core of the invention.
The yarn comprises an upper yarn bank, a lower yarn bank, a double-twist spindle, a yarn guide roller, a yarn core yarn, a tension rod, a yarn guide roller, a yarn guide plate, a spindle, a bobbin, 11-14, a yarn storage barrel, a middle core hole, a 111-shaped yarn, a covering yarn, a core-spun yarn A, a core-spun yarn B, a core-spun yarn C, a core-spun yarn D, a core-spun yarn E, a core-spun yarn B, a core-spun yarn C, a core-spun yarn D, a core-spun yarn E and a yarn core yarn C.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below so that those skilled in the art can better understand the advantages and features of the present invention, and thus the scope of the present invention will be more clearly defined. The embodiments described herein are only a few embodiments of the present invention, rather than all embodiments, and all other embodiments that can be derived by one of ordinary skill in the art without inventive faculty based on the embodiments described herein are intended to fall within the scope of the present invention.
Examples
As shown in fig. 1, a multi-core composite structure rope core machine mainly includes three parts: two-for-one twisting mechanism, rope core yarn feeding mechanism, spindle twisting winding mechanism, wherein: the double-twisting mechanism comprises an upper layer yarn bank 1, a lower layer yarn bank 2, a double-twisting spindle 3 and a yarn leading roller 4; the rope core yarn feeding mechanism comprises rope core yarns 5 and a tension rod 6; the spindle twisting winding mechanism comprises a yarn guide roller 7, a yarn guide plate 8, a spindle 9 and a bobbin 10. Each multi-core composite structure rope core machine is provided with 4 sets of double-twisting mechanisms with the same structure to form A, B, C, D four core-spun yarns respectively.
The structure of the lower yarn storehouse is schematically shown in figure 2, and 4 yarn storage barrels 11, 12, 13 and 14 are arranged, 4 cone yarns can be respectively placed, and 4 yarns are led into a double-twisting spindle through a middle core hole 15.
The yarn of upper yarn storehouse is as the core yarn, and 4 yarns of lower floor's yarn storehouse are as the cladding yarn, and the rotatory twisting through the two-for-one twisting spindle forms the covering yarn, and the cross-sectional structure sketch map of covering yarn is shown in figure 3, wherein: the number of the 4 wrap yarns is 111, 112, 113, 114 respectively, and the number of the core yarn is 115.
The schematic diagram of the yarn guide plate is shown in fig. 4, the yarn guide plate is positioned right above the top hole of the spindle 9, 5 yarn guide holes are formed in the yarn guide plate and respectively correspond to 4 core-spun yarns A, B, C, D and 1 rope core yarn E, and the yarn guide hole of the rope core yarn E is positioned in the center of the yarn guide plate.
The schematic cross-sectional structure of the multi-core composite structure rope core is shown in figure 5, wherein: the number of the 4 core-spun yarns is A, B, C, D, and the number of the cord core yarns is E.
The core yarn of the invention adopts 0.8g/M sisal yarn, the oil immersion treatment is carried out, the cladding yarn adopts 4 pieces of 4800D ultra-high molecular weight polyethylene twisted yarns, the core yarn is twisted by a double twisting mechanism to form core-spun yarn, the speed of a double twisting spindle is 600r/min, and the twist is 40T/M. The rope core yarn is 1.4g/M sisal hemp yarn, and is subjected to oil immersion treatment, the spindle speed is 660r/min, and the twist is 22T/M. The specification of the rope core is as follows: 13g/m, diameter 8 mm. The twisting direction of the double twist is opposite to the twisting direction of the spindle.
The production process of the light high-strength multi-core composite structure rope core is characterized by comprising the following steps of: the method comprises the following steps:
step one, in a double-twisting mechanism, yarns in an upper layer yarn bank are used as core yarns, 4 yarns in a lower layer yarn bank are used as cladding yarns, and core-spun yarns are formed through rotary twisting of a double-twisting spindle; the formed 4 core-spun yarns A, B, C and D are respectively led into a yarn guide plate through a yarn guide roller and a yarn guide roller;
step two, in the rope core yarn feeding mechanism, the rope core yarn E is sequentially led into the yarn guide plate through the rope core yarn and the tension rod;
and step three, in a spindle twisting and winding mechanism, 4 core-spun yarns A, B, C and D enter a spindle top hole vertically below through a yarn guide plate, the spindle rotates to twist four yarns, the core-spun yarn E is in the center and is wrapped in the center by the core-spun yarns A, B, C and D, the spindle is in motion fit with a bobbin, and the twisted yarns are wound on the bobbin to form the light high-strength multi-core composite structure rope core.
According to the rope core with the multi-core composite structure, the plurality of sisal yarns are used as the core, each sisal yarn is subjected to oil immersion treatment, the sisal yarns are uniformly distributed in the rope core, the ratio of the sisal yarns to the rope core is about 1/4, and the oil content is sufficient.
The core-spun yarn of the invention: the core yarn is sisal yarn, and the surface is super high molecular weight polyethylene filament twisted yarn after oiling treatment.
The rope core is sisal yarn, and the core-spun yarn is coated outside after oiling treatment.
The sisal yarns are uniformly dispersed in the rope, each sisal yarn and each sisal thread are subjected to oil immersion treatment, and the whole rope is uniformly oiled.
The ultra-high molecular weight polyethylene filament can better exert the strength of the filament after twisting, and on the other hand, because the surface of the twisted filament is wrapped on the surface of the core yarn, the surface of the twisted filament is easy to form a capillary effect, so that grease can move conveniently.
The multi-core composite structure rope core has smooth surface, light weight, high strength, good wear resistance, uniform oil bearing and stable structure; in the production process, the integration of wire making and rope making is realized, the production flow is short, the efficiency is high, and the energy is saved.
Claims (2)
1. The utility model provides a multicore composite construction rope core machine of light weight, high strength multicore composite construction rope core which characterized in that: the light high-strength multi-core composite structure rope core consists of 4 core-spun yarns A, a core-spun yarn B, a core-spun yarn C, a core-spun yarn D and 1 rope core yarn E;
the core yarns of the core-spun yarn A, the core-spun yarn B, the core-spun yarn C and the core-spun yarn D adopt 0.8g/m sisal yarns, and are subjected to oil immersion treatment; the core-spun yarn A, the core-spun yarn B, the core-spun yarn C and the core-spun yarn D are respectively made of 4 twisted yarns of 4800D ultra-high molecular weight polyethylene filaments, the core-spun yarn is formed by twisting through a double twisting mechanism, the speed of a double twisting spindle is 600r/min, and the twist degree is 40T/M;
the rope core yarn E adopts 1.4g/M sisal yarn, and is subjected to oil immersion treatment, the spindle speed is 660r/min, and the twist is 22T/M;
the specification of the light high-strength multi-core composite structure rope core is as follows: 13g/m, the diameter is 8mm, and the twisting direction of the double twisting is opposite to that of the spindle;
the multi-core composite structure rope core machine comprises three mechanisms: a double-twist twisting mechanism, a rope core yarn feeding mechanism and a spindle twisting winding mechanism; each multi-core composite structure rope core machine is provided with 4 sets of double-twisting mechanisms with the same structure to respectively form A, B, C, D four core-spun yarns;
the double-twisting mechanism comprises an upper layer yarn bank (1), a lower layer yarn bank (2), a double-twisting spindle (3) and a yarn-leading roller (4); the rope core yarn feeding mechanism comprises rope core yarns (5) and a tension rod (6); the spindle twisting and winding mechanism comprises a yarn guide roller (7), a yarn guide plate (8), a spindle (9) and a bobbin (10);
in the double-twisting mechanism, 4 yarn storage barrels (11, 12, 13 and 14) are arranged on the lower layer yarn bank (2) and can be used for respectively placing 4 cone yarns, and the 4 cone yarns are led into a double-twisting spindle (3) through a middle core hole (15); the yarns in the upper yarn bank (1) are used as core yarns, 4 yarns in the lower yarn bank (2) are used as cladding yarns, and the core-spun yarns are formed by rotating and twisting a two-for-one twisting spindle (3); the formed 4 core-spun yarns A, B, C and D are respectively led into a yarn guide plate (8) through a yarn guide roller (4) and a yarn guide roller (7);
in the rope core yarn feeding mechanism, the rope core yarn E is led into a yarn guide plate (8) through a rope core yarn (5) and a tension rod (6) in sequence;
in the spindle twisting and winding mechanism, the yarn guide plate (8) is positioned right above a top hole of the spindle (9), 5 yarn guide holes are formed in the yarn guide plate (8) and respectively correspond to 4 core-spun yarns A, a core-spun yarn B, a core-spun yarn C, a core-spun yarn D and 1 rope core yarn E, wherein the yarn guide hole of the rope core yarn E is positioned in the center of the yarn guide plate (8);
4 core-spun yarns A, B, C and D enter a spindle (9) top hole vertically below through a yarn guide plate (8), the spindle (9) rotates to twist four yarns, the core-spun yarns E are in the center and are wrapped in the center by the core-spun yarns A, B, C and D, the spindle (9) is in motion fit with a bobbin (10) to wind the twisted yarns on the bobbin (10) to form the light high-strength multi-core composite structure rope core.
2. A production process of a light high-strength multi-core composite structure rope core produced by a multi-core composite structure rope core machine of the light high-strength multi-core composite structure rope core according to claim 1, which is characterized in that: the method comprises the following steps:
step one, in a double-twisting mechanism, yarns in an upper layer yarn bank are used as core yarns, 4 yarns in a lower layer yarn bank are used as cladding yarns, and core-spun yarns are formed through rotary twisting of a double-twisting spindle; the formed 4 core-spun yarns A, B, C and D are respectively led into a yarn guide plate through a yarn guide roller and a yarn guide roller;
step two, in the rope core yarn feeding mechanism, the rope core yarn E is sequentially led into the yarn guide plate through the rope core yarn and the tension rod;
and step three, in the spindle twisting and winding mechanism, 4 core-spun yarns A, B, C and D enter a spindle top hole vertically below through a yarn guide plate, the spindle rotates to twist four yarns, the cord yarn E is in the center and is wrapped by the core-spun yarns A, B, C and D, the spindle is in motion fit with the bobbin, and the twisted yarns are wound on the bobbin to form the light high-strength multi-core composite structure cord core.
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