CN217008684U

CN217008684U - Light anti-bending conductive fiber shielding multi-core cable

Info

Publication number: CN217008684U
Application number: CN202220459482.7U
Authority: CN
Inventors: 刘书鑫; 王礼国; 蔡长威; 李清华; 吴英俊
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 light anti-bending conductive fiber shielding multi-core cable which comprises three internal power supply cores, two internal control cores and one internal grounding wire which are jointly twisted to form a first wire core body, wherein the outside of the first wire core body is coated with a fluororesin inner wrapping antifriction layer, three power supply wire core groups and three external grounding wires are mutually staggered and surround the outside of the fluororesin inner wrapping antifriction layer to jointly twist to form a second wire core body, each power supply wire core group comprises two external power supply cores, each external power supply core comprises a first inner conductor, a PFA hollow insulator, a conductive fiber winding shielding layer and a silane grafted cross-linked linear low-density polyethylene outer insulating layer, the outside of the second wire core body is sequentially coated with a fluororesin outer wrapping antifriction layer, a conductive fiber shielding layer and a PVC outer sheath, and the outer diameter of PVC is 4-5.2 mm. The cable is manufactured based on small diameter and light weight, and has better flexibility and bending resistance and stable electrical shielding performance.

Description

Light anti-bending conductive fiber shielding multi-core cable

Technical Field

The utility model relates to the technical field of cables, in particular to a light anti-bending 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 light anti-bending conductive fiber shielding multi-core cable which is manufactured based on small diameter and light weight, has better flexibility and anti-bending performance, stable electrical shielding performance and durable use.

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

Lightweight bending-resistant conductive fiber shielding multi-core cable, including three internal power source sinle silk, two internal control sinle silks and an internal earth connection transposition jointly and constitute first line core body, the outside cladding of first line core body has the fluororesin area around package antifriction layer, and three power cord core group and three external earth connection crisscross each other around the fluororesin area around package antifriction layer outside transposition jointly and constitute second line core body, power cord core group includes two external power source sinle silks, external power source sinle silk includes first inner conductor, PFA hollow insulator, conductive fiber winding shielding layer and silane grafting cross-linking linear low density polyethylene outer insulation layer, PFA hollow insulator includes interior cylinder body and outer cylinder body, be radial equipartition between interior cylinder body and the outer cylinder body and have a plurality of connecting plate body, PFA hollow insulator external diameter is 0.5mm to 1mm, the outside cladding in proper order of second wire core has fluororesin outband to wrap antifriction layer, conductive fiber shielding layer and PVC oversheath, the conductive fiber shielding layer is double-deck aramid fiber twisted wire and is each other for reverse spiral to weave around the package and form the cylinder and support the dictyosome, the even cloth of circumference is equipped with a plurality of conductive fiber bundles on the support dictyosome, conductive fiber bundles is that a plurality of polyacrylonitrile base carbon fiber strands and coats copper conductive coating and form, PVC oversheath external diameter is 4mm to 5.2 mm.

Preferably, the first cord body and the second cord body are twisted in opposite directions.

Preferably, the fluororesin tape inner wrapped antifriction layer and the fluororesin tape outer wrapped antifriction layer are both fluororesin tape unidirectional spiral wrapped structures, and the winding distance of the fluororesin tape outer wrapped antifriction layer is 2 to 4 times that of the fluororesin tape inner wrapped antifriction layer.

Preferably, the conductive fiber wound shielding layer is a conductive fiber bundle spiral wound structure and the spiral angle is 40 to 55 degrees.

Preferably, the polyacrylonitrile-based carbon fiber has a wire diameter of not more than 25 μm.

Preferably, the internal power supply core includes a second inner conductor and a fluorine resin extrusion insulating layer.

Preferably, the internal control wire core is formed by twisting two twisted pair wire cores in pair, the external part of the control wire core is coated with a foamed PFA insulating layer, and each twisted pair wire core comprises a third inner conductor and a PFA resin tape wrapping insulating layer.

Preferably, the thickness of the wrapped antifriction layer in the fluororesin belt is 0.005mm to 0.01mm, and the thickness of the wrapped antifriction layer outside the fluororesin belt is 0.005mm to 0.01 mm.

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

Preferably, the PVC outer sheath has a thickness of 0.5mm to 1.5 mm.

The utility model has the beneficial effects that:

1. with three internal power sinle silk, two internal control sinle silks, an internal earth connection, three power cord core group and three external earth connection layering rational arrangement are in first sinle silk and second sinle silk, avoid arranging in unison in one deck cable in-core, the effectual cable external diameter 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 the 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 shielding layer and the conductive fiber bundle of the conductive fiber winding shielding layer are 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.

3. The PFA hollow insulator is arranged on the external power supply wire core, so that lateral pressure during bending can be borne, the flexibility and bending resistance of the cable are improved, and the cable is better in durability.

Drawings

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

In the figure: 1-internal power supply wire core, 11-second internal conductor, 12-fluororesin extruded insulation layer, 2-internal control wire core, 21-twisted wire core, 211-third internal conductor, 212-PFA resin tape wrapped insulation layer, 22-foamed PFA insulation layer, 3-internal ground wire, 4-fluororesin tape wrapped antifriction layer, 5-external ground wire, 6-external power supply wire core, 61-first internal conductor, 62-PFA hollow insulator, 621-inner cylinder body, 622-outer cylinder body, 623-connection plate body, 63-conductive fiber wrapped shielding layer, 64-silane grafted cross-linked linear low-density polyethylene outer insulation layer, 7-fluororesin tape wrapped antifriction layer, 8-conductive fiber shielding layer, and 9-PVC outer sheath.

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 lightweight bending-resistant conductive fiber shielded multi-core cable according to the embodiment of the utility model includes three internal power cores 1, two internal control cores 2, and an internal ground wire 3, which are twisted together to form a first core body. The first bobbin body is externally coated with a fluororesin belt wrapped with an antifriction layer 4. The three power cord core groups and the three external grounding wires 5 are mutually staggered and wound around the inner portion of the fluororesin belt around the outer portion of the anti-friction layer 4 to form a second cord body, and the twisting directions of the first cord body and the second cord body are opposite.

The power cord core set comprises two external power cord cores 6, wherein each external power cord core 6 comprises a first inner conductor 61, a PFA hollow insulator 62, a conductive fiber winding shielding layer 63 and a silane-grafted cross-linked linear low-density polyethylene outer insulating layer 64, each PFA hollow insulator 62 comprises an inner cylinder 621 and an outer cylinder 622, a plurality of connecting plate bodies 623 are radially and uniformly distributed between the inner cylinder 621 and the outer cylinder 622, and the outer diameter of each PFA hollow insulator 62 is 0.5 mm-1 mm. Specifically, the conductive fiber wound shielding layer 63 is a conductive fiber bundle spiral wound structure and the spiral angle is 40 to 55 degrees.

In one embodiment, the internal power supply core 1 includes a second inner conductor 11 and a fluorine resin extrusion insulation layer 12. In one embodiment, the inner control wire core 2 is formed by twisting two twisted pair wire cores 21 to form a control wire core body, the control wire core body is externally coated with a foamed PFA insulating layer 22, and the twisted pair wire core 21 comprises a third inner conductor 211 and a PFA resin tape wrapping insulating layer 212.

The outside of the second wire core body is sequentially coated with a fluororesin tape wrapped with an anti-friction layer 7, a conductive fiber shielding layer 8 and a PVC outer sheath 9. Specifically speaking, the fluororesin tape is wrapped with the antifriction layer 4 and the fluororesin tape is wrapped with the antifriction layer 7 and is a fluororesin tape unidirectional spiral wrapping structure, the winding distance of the fluororesin tape is 2 to 4 times of the winding distance of the fluororesin tape wrapped with the antifriction layer 4, and further, the thickness of the fluororesin tape is wrapped with the antifriction layer 4 and the thickness of the fluororesin tape wrapped with the antifriction layer 7 is 0.005mm to 0.01 mm. The conductive fiber shielding layer 8 is a cylindrical supporting net body formed by lapping and weaving double-layer aramid fiber 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, the conductive fiber bundles are formed by stranding a plurality of polyacrylonitrile-based carbon fibers and coating copper conductive coating layers, and further the wire diameter of the polyacrylonitrile-based carbon fibers is not more than 25 micrometers. The conductive fiber shielding layer 8 is preferably 0.05mm to 0.3mm thick. The outer diameter of the PVC outer sheath 9 is 4mm to 5.2 mm. The PVC outer sheath 9 is 0.5mm to 1.5mm thick.

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, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. Lightweight bending-resistant conductive fiber shielding multi-core cable, which is characterized in that: the cable comprises three internal power supply wire cores (1), two internal control wire cores (2) and an internal grounding wire (3) which are jointly twisted to form a first wire core body, wherein the first wire core body is externally wrapped with a fluororesin band and is wrapped with an anti-friction layer (4), three power supply wire core groups and three external grounding wires (5) are mutually staggered and surround the fluororesin band and are jointly twisted to form a second wire core body outside the anti-friction layer (4), each power supply wire core group comprises two external power supply wire cores (6), each external power supply wire core (6) comprises a first inner conductor (61), a PFA hollow insulator (62), a conductive fiber winding shielding layer (63) and a silane grafted crosslinked linear low-density polyethylene outer insulating layer (64), each PFA hollow insulator (62) comprises an inner cylinder body (621) and an outer cylinder body (622), and a plurality of connecting plate bodies (623) are uniformly distributed in a radial manner between the inner cylinder body (621) and the outer cylinder body (622), PFA hollow insulator (62) external diameter is 0.5mm to 1mm, the outside cladding in proper order of second line core has fluororesin outband around package antifriction layer (7), conductive fiber shielding layer (8) and PVC oversheath (9), conductive fiber shielding layer (8) are that double-deck aramid fiber twisted wire is each other for reverse spiral around the package to weave formation cylinder supporting network body, circumference evenly has been laid a plurality of conductive fiber bundles on the supporting network body, conductive fiber bundle is the transposition of a plurality of polyacrylonitrile base carbon fiber and coats copper conductive coating and form, PVC oversheath (9) external diameter is 4mm to 5.2 mm.

2. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the first wire core body and the second wire core body are oppositely twisted.

3. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the fluororesin tape is wrapped with the antifriction layer (4) and the fluororesin tape is wrapped with the antifriction layer (7) and is a fluororesin wrapped with unidirectional spiral wrapping structure, and the winding distance of the fluororesin tape is 2 to 4 times that of the fluororesin tape wrapped with the antifriction layer (4).

4. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the conductive fiber winding shielding layer (63) is in a conductive fiber bundle spiral winding structure, and the spiral angle is 40-55 degrees.

5. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the wire diameter of the polyacrylonitrile-based carbon fiber is not more than 25 μm.

6. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the internal power supply wire core (1) comprises a second inner conductor (11) and a fluororesin extrusion insulating layer (12).

7. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the internal control wire core (2) is formed by twisting two twisted wire cores (21) in pairs to form a control wire core body, the outside of the control wire core body is coated with a foaming PFA insulating layer (22), and the twisted wire cores (21) comprise a third inner conductor (211) and a PFA resin tape wrapping insulating layer (212).

8. The lightweight bending-resistant 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 (7) are both 0.005mm to 0.01 mm.

9. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the thickness of the conductive fiber shielding layer (8) is 0.05mm to 0.3 mm.

10. The lightweight bending-resistant conductive fiber-shielded multi-core cable according to claim 1, wherein: the thickness of the PVC outer sheath (9) is 0.5mm to 1.5 mm.