CN217361167U

CN217361167U - Light environment-friendly 3-core insulated cable

Info

Publication number: CN217361167U
Application number: CN202221082947.8U
Authority: CN
Inventors: 江平; 黄建卫; 蔡长威; 刘书鑫
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-09-02
Anticipated expiration: 2032-05-07

Abstract

The utility model discloses a 3 core insulated cables of light environment-friendly, including the power sinle silk, control core, coaxial sinle silk and the common transposition of three counterpoint type whole aromatic copolyamide tensile fiber core constitute the cable core, the outside cladding of cable core has aramid fiber twisted wire total winding layer in proper order, silane grafting crosslinked high density polyethylene inner sheath, total shielding layer of conductive fiber winding and silane grafting crosslinked high density polyethylene oversheath, power cord core includes the power cord core, the outside cladding of power cord core has first aramid fiber twisted wire to divide winding layer and PET resin area to indulge the covering in proper order, control core includes that two insulating counterpoint sinle silk counterpins pair twist constitute the control cord core, the outside cladding of control cord has second aramid fiber twisted wire to divide winding layer in proper order, iron powder polyethylene resin composite winding layer, shielding layer and PET resin area are divided around the covering in the conductive fiber winding. The cable meets the requirements of environment-friendly cables, is required to be manufactured based on light weight and light weight, and ensures stable shielding performance and durable use.

Description

Light environment-friendly 3-core insulated cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a 3 core insulated cable of light environment-friendly.

Background

On the automatic industrial manufacturing production line, electrical connection and control needs such as small-size robot and electronic machine are applied to high flexible multicore cable, and under normal operational environment, the cable need stand and buckle repeatedly, and the multicore cable has metallic shield usually, and the metallic shield easily appears the broken string phenomenon, causes the shielding effect unstable, influences the electrical characteristic, and simultaneously, the copper line quantity is many, and is heavy, and manufacturing cost is high, is unfavorable for light weight and produces the needs. Currently, halogen-free low-smoke flame-retardant environment-friendly electric wires and cables are increasingly popularized and applied, the environment-friendly cables need to meet the ROHS instruction of the European Union, the environment-friendly cable products do not contain substances harmful to human bodies, such as lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls and polybrominated diphenyl ethers, which are forbidden in the ROHS instruction, and meanwhile, the environment-friendly cables do not pollute the environment and are beneficial to environmental protection and renewable treatment. Therefore, it is one of the main issues to develop an environment-friendly cable while taking into consideration the design requirements of lightweight cables.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art not enough, the technical problem that solve provides a 3 core insulated cables of light environment-friendly, adopts the nontoxic fire-retardant material of steamed low cigarette of nothing, accords with the environmental protection cable requirement, and it is required based on light lightweight preparation, get rid of the metal shielding layer, guarantee shielding performance stability, durable use.

The utility model discloses a make above-mentioned technical problem solve through following technical scheme.

The light and environment-friendly 3-core insulated cable comprises a power wire core, a control wire core, a coaxial wire core and three para-type wholly aromatic copolyamide drawn fiber core materials which are jointly twisted to form a cable core, wherein the cable core is sequentially coated with an aramid twisted wire total winding layer, a silane grafted crosslinked high-density polyethylene inner sheath, a conductive fiber wound total shielding layer and a silane grafted crosslinked high-density polyethylene outer sheath, the power wire core comprises five insulated wire cores which are jointly twisted around a para-type wholly aromatic copolyamide drawn fiber central core to form a power wire core, the power wire core is sequentially coated with a first aramid twisted wire sub-winding layer and a PET resin tape longitudinal cladding layer, the insulated wire core comprises a first inner conductor and a first silane grafted crosslinked low-density polyethylene insulating layer, the control wire core comprises two insulated para-twisted wire cores which are oppositely twisted to form a control wire core, the insulating pair twist sinle silk includes second inner conductor and second silane grafting crosslinking low density polyethylene insulating layer, the outside cladding in proper order of control line core has second aramid fiber twisted wire to divide winding layer, the compound winding layer of iron powder polyethylene resin, conductive fiber winding to divide shielding layer and PET resin area around the covering, coaxial sinle silk includes the third inner conductor and the cladding in proper order the outside third silane grafting crosslinking low density polyethylene insulating layer of third inner conductor, conductive fiber weave and divide shielding layer and the crowded covering of PET resin.

Preferably, the power core and the coaxial core have an outside diameter ratio of 1:0.95 to 1:1.05, and the power core and the control core have an outside diameter ratio of 1:0.85 to 1:1.

Preferably, the first inner conductor, the second inner conductor and the third inner conductor are all formed by twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.02mm to 0.05 mm.

Preferably, the total winding layer of the aramid fiber twisted wire, the sub-winding layer of the first aramid fiber twisted wire and the sub-winding layer of the second aramid fiber twisted wire are all of aramid fiber twisted wire unidirectional spiral winding structures, and the wire diameter of the aramid fiber twisted wire is 0.04mm to 0.28 mm.

Preferably, the lay length of the cable core is 10 times to 30 times of the outer diameter of the power wire core.

Preferably, the conductive fiber winding total shielding layer and the conductive fiber winding sub-shielding layer are conductive fiber bundle spiral winding structures, the weaving density is 95% -98%, and the conductive fiber bundles are formed by twisting a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

Preferably, the conductive fiber braided sub-shielding layer is a cylindrical supporting net body formed by lapping and braiding double-layer aramid twisted wires in a reverse spiral mode, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

Preferably, the iron powder polyethylene resin composite winding layer is of an iron powder polyethylene resin composite belt one-way spiral lapping and covering wrapping structure.

Preferably, the thickness of the conductive fiber winding total shielding layer is 0.3mm to 0.5 mm.

Preferably, the silane-grafted crosslinked high density polyethylene inner sheath and the silane-grafted crosslinked high density polyethylene outer sheath have a total thickness of 0.8mm to 3.6 mm.

The utility model has the advantages that:

1. each layer, each wire core and the filling core material of the cable meet the ROHS instruction of European Union, meet the requirements of environment-friendly cables, do not contain harmful substances to human health, have no pollution to the environment, and are beneficial to environmental protection and renewable treatment.

2. Through getting rid of the metallic shield layer, help light weight production, avoided the broken string of metallic shield layer to take place, the conductive fiber winding is total to shield the layer, the conductive fiber winding divides the shielding layer, the conductive fiber weaves the conductive fiber bundle that divides the shielding layer and for polyacrylonitrile base carbon fiber transposition and scribble copper conductive coating formation, can effectual replacement metallic material shielding layer, ensures that shielding performance is stable, effectively lightens cable weight, reduce cost, and it is required to realize light weight production. Meanwhile, the iron powder and polyethylene resin composite winding layer is additionally arranged to enhance the capability of shielding signal interference, and the iron powder filler and polyethylene resin composite material is adopted, so that the polyethylene resin base layer can help to reduce stress concentration of the conductive fiber winding sub-shielding layer, reduce torque force, enhance the capability of inhibiting external noise interference, reduce signal attenuation and have better signal transmission characteristics.

3. Through optimizing power sinle silk, control sinle silk, coaxial sinle silk external diameter ratio, help guaranteeing the cable circular cross section, the pliability and the resistant bending characteristic of cable have been improved, through adding the tensile fibre core of counterpoint type wholly aromatic copolyamide in cable core inside, the tensile elastic modulus of the tensile fibre core of counterpoint type wholly aromatic copolyamide is big, lateral pressure when making the cable bear the bending that can be better, the cable has high flexibility, the internal conductor that significantly reduces takes place to warp disconnected silk, guarantee the electrical property, durability is better.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.

In the figure: 1-power wire core, 11-insulating wire core, 111-first inner conductor, 112-first silane grafted crosslinked low density polyethylene insulating layer, 12-para-type wholly aromatic copolyamide drawn fiber central core strip, 13-first aramid twisted wire split winding layer, 14-PET resin tape longitudinal cladding layer, 2-control wire core, 21-insulating twisted wire core, 211-second inner conductor, 212-second silane grafted crosslinked low density polyethylene insulating layer, 22-second aramid twisted wire split winding layer, 23-iron powder polyethylene resin composite winding layer, 24-conductive fiber wound split shielding layer, 25-PET resin tape winding layer, 3-coaxial wire core, 31-third inner conductor, 32-third silane grafted crosslinked low density polyethylene insulating layer, 33-conductive fiber braided split shielding layer, the cable comprises 34-PET resin extrusion coating, 4-para-type wholly aromatic copolyamide drawn fiber core material, 5-aramid twisted wire total winding layer, 6-silane grafted cross-linked high-density polyethylene inner sheath, 7-conductive fiber wound total shielding layer and 8-silane grafted cross-linked high-density polyethylene outer sheath.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the drawings.

As shown in fig. 1, the light environment-friendly 3-core insulated cable according to the embodiment of the present invention includes a power core 1, a control core 2, a coaxial core 3, and three para-type wholly aromatic copolyamide drawn fiber core materials 4, which are twisted together to form a cable core, wherein the ratio of the outer diameters of the power core 1 and the coaxial core 3 is 1:0.95 to 1:1.05, and the ratio of the outer diameters of the power core 1 and the control core 2 is 1:0.85 to 1:1. The lay length of the cable core is 10 times to 30 times of the outer diameter of the power supply wire core 1.

The utility model provides a power cord 1 includes that five insulation core 11 twist around a counterpoint type wholly aromatic copolyamide tensile fibre center core 12 jointly and constitute the power cord core, the outside cladding in proper order of power cord core has first aramid fiber twisted wire to divide winding layer 13 and PET resin area to indulge cladding 14, insulation core 11 includes first inner conductor 111 and first silane graft cross-linking low density polyethylene insulating layer 112, specific theory, first inner conductor 111 constitutes for a plurality of tin-plated copper monofilament transposition, tin-plated copper monofilament's line footpath is 0.02mm to 0.05 mm. In one embodiment, the first aramid twisted yarn sub-wound layer 13 is an aramid twisted yarn unidirectional spiral wound structure, and the yarn diameter of the aramid twisted yarn is 0.04mm to 0.28 mm.

The control wire core 2 comprises two insulation twisted pair wire cores 21 twisted in pairs to form a control wire core body, each insulation twisted pair wire core 21 comprises a second inner conductor 211 and a second silane grafted cross-linked low-density polyethylene insulation layer 212, specifically, the second inner conductor 211 is formed by twisting a plurality of tin-plated copper monofilaments, and the wire diameter of each tin-plated copper monofilament is 0.02mm to 0.05 mm. The outside cladding has second aramid fiber twisted wire in proper order and divides winding layer 22, the compound winding layer 23 of iron powder polyethylene resin, conductive fiber winding to divide shielding layer 24 and PET resin area around covering 25, in an embodiment, second aramid fiber twisted wire divides winding layer 22 to be the unidirectional spiral winding structure of aramid fiber twisted wire, the line footpath of aramid fiber twisted wire is 0.04mm to 0.28 mm. In one embodiment, the conductive fiber wound sub-shield 24 is a conductive fiber bundle spirally wound structure with a weaving density of 95% to 98%, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating. In one embodiment, the iron powder polyethylene resin composite winding layer 23 is an iron powder polyethylene resin composite tape one-way spiral lapping and wrapping structure.

The coaxial cable core 3 comprises a third inner conductor 31, a third silane grafted crosslinked low-density polyethylene insulating layer 32, a conductive fiber braided sub-shielding layer 33 and a PET resin extrusion layer 34, wherein the third silane grafted crosslinked low-density polyethylene insulating layer 32, the conductive fiber braided sub-shielding layer 33 and the PET resin extrusion layer are sequentially coated outside the third inner conductor 31. Specifically, the third inner conductor 31 is formed by twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.02mm to 0.05 mm. In one embodiment, the conductive fiber braided sub-shielding layer 33 is formed by double-layer aramid twisted wires which are reversely spirally braided to form a cylindrical supporting net body, a plurality of conductive fiber bundles are uniformly distributed on the supporting net body in the circumferential direction, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

The cable core outside cladding has aramid fiber twist yarn total winding layer 5, silane grafting crosslinked high density polyethylene inner sheath 6, conductive fiber winding total shielding layer 7 and silane grafting crosslinked high density polyethylene oversheath 8 in proper order, and in an embodiment, aramid fiber twist yarn total winding layer 5 is the unidirectional spiral winding structure of aramid fiber twist yarn, the line footpath of aramid fiber twist yarn is 0.04mm to 0.28 mm. In one embodiment, the conductive fiber wound total shield layer 7 is a conductive fiber bundle spirally wound structure with a weaving density of 95% to 98%, and the conductive fiber bundle is formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating a copper conductive coating layer. The thickness of the conductive fiber winding total shielding layer 7 is 0.3mm to 0.5 mm. The silane-grafted crosslinked high-density polyethylene inner sheath 6 and the silane-grafted crosslinked high-density polyethylene outer sheath 8 have a total thickness of 0.8mm to 3.6 mm.

The present invention has been described with reference to exemplary embodiments, and it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.

Claims

1. 3 core insulated cable of light environment-friendly, characterized by: the cable comprises a power core (1), a control core (2), a coaxial core (3) and three para-type wholly aromatic copolyamide tensile fiber core materials (4) which are jointly twisted to form a cable core, wherein the cable core is externally and sequentially wrapped with an aramid twisted wire total winding layer (5), a silane grafted crosslinked high-density polyethylene inner sheath (6), a conductive fiber wound total shielding layer (7) and a silane grafted crosslinked high-density polyethylene outer sheath (8), the power core (1) comprises five insulating cores (11) which are jointly twisted around a para-type wholly aromatic copolyamide tensile fiber central core strip (12) to form a power core body, the power core body is externally and sequentially wrapped with a first aramid twisted wire partial winding layer (13) and a PET resin belt longitudinal covering layer (14), and the insulating cores (11) comprise a first inner conductor (111) and a first silane grafted crosslinked low-density polyethylene insulating layer (112), control sinle silk (2) include that two insulating pair twist sinle silks (21) pair twist constitute the control line core, insulating pair twist sinle silk (21) include second inner conductor (211) and second silane grafting crosslinking low density polyethylene insulating layer (212), the outside cladding in proper order of control line core has second aramid fiber twist to divide winding layer (22), iron powder polyethylene resin composite winding layer (23), conductive fiber winding branch shielding layer (24) and PET resin area around covering (25), coaxial sinle silk (3) include third inner conductor (31) and the cladding in proper order third silane grafting crosslinking low density polyethylene insulating layer (32), conductive fiber weave branch shielding layer (33) and the crowded covering of PET resin (34) of third inner conductor (31) outside.

2. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the power core (1) and the coaxial core (3) have an outer diameter ratio of 1:0.95 to 1:1.05, and the power core (1) and the control core (2) have an outer diameter ratio of 1:0.85 to 1:1.

3. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the first inner conductor (111), the second inner conductor (211) and the third inner conductor (31) are all formed by twisting a plurality of tinned copper monofilaments, and the wire diameter of each tinned copper monofilament is 0.02 mm-0.05 mm.

4. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the aramid fiber twisted wire is characterized in that the aramid fiber twisted wire total winding layer (5), the first aramid fiber twisted wire sub-winding layer (13) and the second aramid fiber twisted wire sub-winding layer (22) are aramid fiber twisted wire one-way spiral winding structures, and the diameter of the aramid fiber twisted wire is 0.04mm to 0.28 mm.

5. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the lay length of the cable core is 10 times to 30 times of the outer diameter of the power wire core (1).

6. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the conductive fiber winding total shielding layer (7) and the conductive fiber winding sub-shielding layer (24) are both of a conductive fiber bundle spiral winding structure, the weaving density is 95% -98%, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coating layers.

7. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the conductive fiber braided sub-shielding layer (33) is formed by lapping and braiding double-layer aramid twisted wires in a reverse spiral mode to form a cylindrical supporting net body, a plurality of conductive fiber bundles are uniformly distributed in the circumferential direction on the supporting net body, and the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coatings.

8. The light environment-friendly 3-core insulated cable according to claim 1, characterized in that: the iron powder polyethylene resin composite winding layer (23) is of an iron powder polyethylene resin composite belt one-way spiral lapping and covering wrapping structure.

9. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the thickness of the conductive fiber winding total shielding layer (7) is 0.3mm to 0.5 mm.

10. The light-weight environment-friendly 3-core insulated cable according to claim 1, characterized in that: the silane grafted and crosslinked high-density polyethylene inner sheath (6) and the silane grafted and crosslinked high-density polyethylene outer sheath (8) have a total thickness of 0.8mm to 3.6 mm.