CN217008687U

CN217008687U - Thin-diameter light-weight conductive fiber shielding multi-core cable

Info

Publication number: CN217008687U
Application number: CN202220459508.8U
Authority: CN
Inventors: 屠渭江; 蔡长威; 刘书鑫; 李清华; 吴英俊; 王礼国
Original assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Current assignee: Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-07-19
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a thin-diameter light-weight conductive fiber shielding multi-core cable which comprises a first core body formed by jointly twisting two internal power supply wire cores and two internal control wire cores around a para-type wholly aromatic copolyamide tensile fiber core material, wherein a fluororesin belt wrapping anti-friction layer is coated outside the first core body, three power supply wire core groups and three drain wires are mutually staggered and jointly twisted around the outside of the fluororesin belt wrapping anti-friction layer to form a second core body, a fluororesin belt wrapping anti-friction layer, a conductive fiber winding shielding layer and a polyurethane outer sheath are sequentially coated outside the second core body, the fluororesin belt wrapping anti-friction layer and the fluororesin belt wrapping anti-friction layer are both fluororesin belt wrapping unidirectional spiral wrapping structures, the conductive fiber winding shielding layer is a conductive fiber bundle spiral wrapping structure, and the outer diameter of the polyurethane outer sheath is 3.8mm to 5 mm. The cable is manufactured based on small diameter and light weight, and has better flexibility and stable electric shielding performance.

Description

Thin-diameter light-weight conductive fiber shielding multi-core cable

Technical Field

The utility model relates to the technical field of cables, in particular to a small-diameter light-weight conductive fiber shielding multi-core cable.

Background

In an automated industrial production line, a multi-core cable is often used for a robot, a mobile drive system, and the like. Due to rapid development of transmission technology, maintenance testing technology and the like, communication cables gradually develop to be thin and light, however, all control cable cores and power supply cable cores are stranded in a central cable core together by the existing multi-core cable, the outer diameter of the cable is larger and larger along with increase of the number of the cable cores, the thin and light manufacturing is not facilitated, and the shielding layer adopts a metal braided shielding structure, so that the number of copper wires is large, the weight is large, the manufacturing cost is high, and the requirements of light production are not facilitated.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model aims to provide a small-diameter light-weight conductive fiber shielding multi-core cable which is manufactured based on small-diameter light-weight and has better flexibility and stable electrical shielding performance.

The utility model solves the technical problems through the following technical scheme.

A thin-diameter light-weight conductive fiber shielding multi-core cable comprises two internal power supply wire cores and two internal control wire cores, wherein the two internal power supply wire cores and the two internal control wire cores are jointly twisted around a counterpoint type wholly aromatic copolyamide tensile fiber core material to form a first wire core body, a fluororesin band is wrapped outside the first wire core body, three power supply wire core groups and three drain wires are mutually staggered and are wound around the fluororesin band and the outside of the fluororesin band and are jointly twisted to form a second wire core body, each power supply wire core group comprises two external power supply wire cores, the outer diameter of each external power supply wire core is 0.7 mm-1 mm, the twisting directions of the first wire core body and the second wire core body are opposite, the outside of the second wire core body is sequentially wrapped with a fluororesin band outer wrapping anti-friction layer, a conductive fiber wrapping shielding layer and a polyurethane outer sheath, the fluororesin band outer wrapping anti-friction layer and the fluororesin band outer wrapping anti-friction layer are of a fluororesin band unidirectional spiral structure, the winding distance of the fluororesin tape wrapped antifriction layer is 50mm to 120mm, the winding distance of the fluororesin tape wrapped antifriction layer is 2 times to 4 times of the winding distance of the fluororesin tape wrapped antifriction layer, the conductive fiber wrapped shielding layer is a conductive fiber bundle spiral winding structure, and the outer diameter of the polyurethane outer sheath is 3.8mm to 5 mm.

Preferably, an iron powder polypropylene composite resin filling core material is filled between the second core body and the fluororesin tape wrapped anti-friction layer.

Preferably, the conductive fiber bundle is formed by twisting two polyacrylonitrile-based carbon fibers with different wire diameters and coating a copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 20 μm.

Preferably, the winding distance of the fluororesin tape wrapped antifriction layer is 10 to 20 times of the outer diameter of the polyurethane outer sheath.

Preferably, the thickness of the wrapped antifriction layer in the fluororesin belt and the thickness of the wrapped antifriction layer outside the fluororesin belt are both not more than 0.01 mm.

Preferably, the thickness of the conductive fiber winding shielding layer is 0.05mm to 0.3 mm.

Preferably, the polyurethane outer sheath has a thickness of 0.45mm to 1.6 mm.

Preferably, the external power supply wire core comprises a first inner conductor, a silane grafted crosslinked foamed polyethylene insulating layer and a silane grafted crosslinked linear low density polyethylene insulating layer.

Preferably, the internal power supply wire core comprises a second inner conductor and a PFA extruded insulation layer, and the outer diameter of the second inner conductor is not more than 0.4 mm.

Preferably, the internal control wire core is formed by twisting two twisted wire cores in pairs, and each twisted wire core comprises a third inner conductor and a foamed PFA insulating layer.

The utility model has the beneficial effects that:

1. with two internal power sinle silks, two internal control sinle silks, three power cord core group and three drain wire layering rational arrangement are internal at first sinle silk and second sinle silk, avoid arranging in unison in one deck cable in-core, the effectual external diameter of cable that has reduced, first sinle silk and second sinle silk outside respectively the cladding fluororesin in-band around package antifriction layer and fluororesin outband around package antifriction layer, form excellent slidability, obtain better antifriction effect, form and be similar to antifriction bearing effect, sliding friction resistance is little, the local stress that significantly reduces concentrates, reduce the moment of torsion, be of value to the pliability that improves the cable, durability is better.

2. The metal shielding layer is removed, the light design is facilitated, the shielding layer is prevented from being broken, the conductive fiber bundle of the conductive fiber winding shielding layer is formed by twisting polyacrylonitrile-based carbon fibers and coating copper conductive coatings, the weight of the cable is reduced on the basis of ensuring the stable shielding performance, the cost is reduced, and the requirements of thin-diameter light production are met. Further, the iron powder polypropylene composite resin filling core material is added to absorb noise interference from the outside and convert the noise interference into heat, so that the signal interference phenomenon between the wire cores is reduced, and the noise shielding performance is stable.

3. The para-type wholly aromatic copolyamide tensile fiber core material has high tensile elastic modulus, is favorable for improving the tensile resistance of the cable core and enhancing the flexibility and bending resistance of the cable.

Drawings

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

In the figure: 1-an internal power supply wire core, 11-a second inner conductor, 12-a PFA extruded insulation layer, 2-an internal control wire core, 21-a twisted wire core, 211-a third inner conductor, 212-a foamed PFA insulation layer, a 3-para-type wholly aromatic copolyamide tensile fiber core, 4-a fluororesin tape wrapped antifriction layer, 5-a drain wire, 6-a fluororesin tape wrapped antifriction layer, 7-a conductive fiber wrapped shielding layer, 8-a polyurethane outer sheath, 9-an external power supply wire core, 91-a first inner conductor, a 92-a silane grafted crosslinked foamed polyethylene insulation layer, a 93-silane grafted crosslinked linear low-density polyethylene insulation layer, and a 10-iron powder polypropylene composite resin filled core.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1, the small-diameter light-weight conductive fiber-shielded multicore cable according to the embodiment of the present invention includes two internal power supply cores 1 and two internal control cores 2, which are co-twisted around a para-type wholly aromatic copolyamide drawn fiber core 3 to form a first core body, in one embodiment, the internal power supply cores 1 include a second inner conductor 11 and a PFA extrusion-coated insulating layer 12, and the outer diameter of the second inner conductor 11 is not more than 0.4 mm. In one embodiment, the inner control wire core 2 is comprised of two twisted pair wires 21, the twisted pair wires 21 including a third inner conductor 211 and a foamed PFA insulation layer 212.

The outside cladding of first line core has the fluororesin in-band around package antifriction layer 4, and three power cord core group and three drain wire 5 crisscross each other center on the fluororesin in-band winds the mutual transposition of 4 outside of package antifriction layers and constitutes second line core, power cord core group includes two external power source sinle silks 9, external power source sinle silks 9 external diameter is 0.7mm to 1 mm. In one embodiment, the external power supply core 9 comprises a first inner conductor 91, a silane-grafted crosslinked foamed polyethylene insulation layer 92, a silane-grafted crosslinked linear low density polyethylene insulation layer 93.

The first wire core body and the second wire core body are oppositely twisted. The outer portion of the second wire core body is sequentially coated with a fluororesin belt wrapped anti-friction layer 6, a conductive fiber wound shielding layer 7 and a polyurethane outer sheath 8, and further, an iron powder polypropylene composite resin filled core material 10 is filled between the second wire core body and the fluororesin belt wrapped anti-friction layer 6. The fluororesin outband is around a antifriction layer 4 and the fluororesin outband is around a antifriction layer 6 and is the one-way spiral of fluororesin around a tape around a package structure, the fluororesin outband is around a roll distance of antifriction layer 6 and be 50mm to 120mm, the fluororesin outband is around a roll distance of antifriction layer 6 and be 2 to 4 times around a roll distance of antifriction layer 4 in the fluororesin outband, further, the fluororesin outband is around a roll distance of antifriction layer 6 and be 10 to 20 times of 8 external diameters of polyurethane oversheath. The thickness of the fluororesin tape wrapped antifriction layer 4 and the thickness of the fluororesin tape wrapped antifriction layer 6 are both not more than 0.01 mm. The conductive fiber winding shielding layer 7 is of a conductive fiber bundle spiral winding structure, specifically, the conductive fiber bundle is formed by stranding two polyacrylonitrile-based carbon fibers with different wire diameters and coating a copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 20 micrometers. The conductive fibre wound shielding layer 7 is preferably 0.05mm to 0.3mm thick. The polyurethane outer sheath 8 preferably has a thickness of 0.45mm to 1.6 mm. The outer diameter of the polyurethane outer sheath 8 is 3.8mm to 5 mm.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. Thin-diameter lightweight conductive fiber shielding multi-core cable is characterized in that: including two internal power source sinle silks (1) and two internal control sinle silks (2) around a counterpoint type aromatic copolyamide stretch fiber core (3) transposition jointly and constitute first line core, the outside cladding of first line core has the fluororesin in-band to wind and wraps antifriction layer (4), and three power cord group and three interference elimination line (5) crisscross each other around the fluororesin in-band winds and wraps antifriction layer (4) outside transposition jointly and constitutes second line core, power cord group includes two external power source sinle silks (9), external power source sinle silks (9) external diameter is 0.7mm to 1mm, first line core with second line core transposition is opposite, second line core outside in proper order the cladding have the fluororesin outband wrap around antifriction layer (6), conductive fiber winding shielding layer (7) and polyurethane oversheath (8), the fluororesin in-band is around antifriction layer (4) and fluororesin outband antifriction layer (6) are fluororesin area One-way spiral is around package structure, the fluororesin outband is 50mm to 120mm around the roll distance of antifriction layer (6), the fluororesin outband is around package antifriction layer (6) roll distance do the fluororesin in-band is around package antifriction layer (4) 2 to 4 times of roll distance, conductive fiber winding shielding layer (7) are conductive fiber bundle spiral winding structure, polyurethane oversheath (8) external diameter is 3.8mm to 5 mm.

2. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: and an iron powder polypropylene composite resin filling core material (10) is filled between the second wire core body and the fluororesin belt wrapped antifriction layer (6).

3. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: the conductive fiber bundle is formed by stranding two polyacrylonitrile-based carbon fibers with different wire diameters and coating a copper conductive coating, and the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 20 mu m.

4. The thin-diameter lightweight conductive fiber shielded multi-core cable according to claim 1, wherein: the winding distance of the fluororesin tape wrapped antifriction layer (6) is 10 to 20 times of the outer diameter of the polyurethane outer sheath (8).

5. The thin-diameter lightweight conductive fiber shielded multi-core cable according to claim 1, wherein: the thickness of the fluororesin tape wrapped antifriction layer (4) and the thickness of the fluororesin tape wrapped antifriction layer (6) are both not more than 0.01 mm.

6. The thin-diameter lightweight conductive fiber shielded multi-core cable according to claim 1, wherein: the thickness of the conductive fiber winding shielding layer (7) is 0.05mm to 0.3 mm.

7. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: the thickness of the polyurethane outer sheath (8) is 0.45mm to 1.6 mm.

8. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: the external power supply wire core (9) comprises a first inner conductor (91), a silane grafted crosslinked foamed polyethylene insulating layer (92) and a silane grafted crosslinked linear low-density polyethylene insulating layer (93).

9. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: the internal power supply wire core (1) comprises a second inner conductor (11) and a PFA extruded insulation layer (12), and the outer diameter of the second inner conductor (11) is not more than 0.4 mm.

10. The small diameter lightweight conductive fiber shielded multi-core cable of claim 1, wherein: the internal control wire core (2) is formed by twisting two twisted wire cores (21) in pairs, and the twisted wire cores (21) comprise a third inner conductor (211) and a foamed PFA insulating layer (212).