CN216596996U

CN216596996U - Bending-resistant 5-core insulated cable

Info

Publication number: CN216596996U
Application number: CN202123044178.0U
Authority: CN
Inventors: 吴焱超; 陈典; 王同; 李鹏飞
Original assignee: Zhejiang Zhongda Yuantong Cable Research Co ltd
Current assignee: Zhejiang Zhongda Yuantong Cable Research Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-24
Anticipated expiration: 2031-12-06

Abstract

The utility model discloses a bending-resistant 5-core insulated cable which comprises five insulated wire cores, wherein the five insulated wire cores are twisted together around a central tensile nylon fiber rope to form a cable core, the outer diameter of the cable core is 6mm to 9.5mm, the outside of the cable core is sequentially coated with an AFRP wrapping layer, a PET resin tape longitudinal wrapping protective layer, a copper foil layer, a nylon anticorrosive layer and a silane grafted cross-linked high-density polyethylene outer sheath, each insulated wire core comprises an inner conductor and an XLPE (cross linked polyethylene) insulating layer, the inner conductor is formed by twisting a central copper stranded wire and an outer copper stranded wire wound on the outside of the central copper stranded wire together, the twisting directions of the central copper stranded wire and the outer copper stranded wire are the same, the twisting pitch of the central copper stranded wire is 6mm to 25mm, and the twisting pitch of the outer copper stranded wire is 1.1 time to 1.5 times of the twisting pitch of the central copper stranded wire. The cable has excellent bending resistance, reduces the occurrence of conductor core breaking and wire breaking, has better shielding effect stability, and is durable in use.

Description

Bending-resistant 5-core insulated cable

Technical Field

The application belongs to the technical field of cables, and particularly relates to a bending-resistant 5-core insulated 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, and the communication cables can bring a plurality of advantages of convenience in transportation, low manufacturing cost, economy, practicality, high efficiency and the like to industrial technology. However, in the process of repeatedly bending, the common multi-core cable is easy to have the phenomena of wire breaking and core breaking, the shielding effect is unstable, the electrical characteristics are affected, and the cable is not durable in use.

SUMMERY OF THE UTILITY MODEL

This application is not enough to prior art, and the technical problem that solve provides a 5 core insulated cable of resistant crooked type, and resistant crooked characteristic is excellent, reduces the conductor disconnected core phenomenon of breaking and takes place, and shielding effect stability is better, durable use.

The present application solves the above-mentioned problems by the following technical solutions.

The bending-resistant 5-core insulated cable comprises five insulated wire cores which are twisted together around a central tensile nylon fiber rope to form a cable core, the outer diameter of the cable core is 6mm to 9.5mm, the cable core is sequentially coated with an AFRP wrapping layer, a PET resin tape longitudinal wrapping protective layer, a copper foil layer, a nylon anticorrosive layer and a silane grafted crosslinked high-density polyethylene outer sheath, the insulated wire core comprises an inner conductor and an XLPE insulated layer, the inner conductor is formed by jointly twisting a central copper stranded wire and an outer layer copper stranded wire which surrounds the outside of the central copper stranded wire, the central copper stranded wire and the outer layer copper stranded wire are formed by stranding a plurality of tinned copper monofilaments with the diameter of 0.05mm to 0.1mm, the twisting directions of the central copper stranded wire and the outer layer copper stranded wire are the same, the twisting distance of the central copper stranded wire is 6mm to 25mm, the twisting pitch of the outer layer copper stranded wires is 1.1-1.5 times of that of the central copper stranded wires.

Preferably, the twisting pitch of the central copper stranded wire is 9mm to 20 mm.

Preferably, the lay length of the outer layer copper stranded wire is 11mm to 28 mm.

Preferably, the thickness of the nylon anticorrosive layer is not less than 0.1 mm.

Preferably, the lay length of the cable core is 8 to 15 times of the outer diameter of the insulated wire core.

Preferably, the copper foil layer is formed on the outer surface of the longitudinal covering protective layer of the PET resin tape through electroplating, and the thickness of the copper foil layer is 5-10 μm.

Preferably, the AFRP lapping layer is formed by spirally lapping single-stranded aramid twisted wires, and the winding distance is two to four times of the outer diameter of the cable core.

Preferably, the single-stranded aramid twisted wire has a wire diameter of 0.08mm to 0.12 mm.

Preferably, the spiral direction of the single-stranded aramid twisted wire is the same as the twisting direction of the cable core.

Preferably, the thickness of the outer sheath of the silane grafted and crosslinked high-density polyethylene is 0.45mm to 3.8 mm.

The beneficial effect of this application:

1. the inner conductor is formed by jointly twisting the central copper stranded wire and the outer copper stranded wire, the twisting directions of the central copper stranded wire and the outer copper stranded wire are the same, when the cable is subjected to a repeated bending process, friction among tinned copper monofilaments can be effectively inhibited, monofilament breakage is reduced, and the bending resistance of the cable is greatly improved.

2. The twisting pitch of the central copper stranded wire is optimized to be 6 mm-25 mm, the twisting pitch of the outer layer copper stranded wire is 1.1 times-1.5 times of the twisting pitch of the central copper stranded wire, the filling density of the tinned copper monofilament under the unit length of the inner conductor is improved, the tensile strength of the inner conductor is enhanced, and the bending resistance of the cable is improved.

3. Through increase AFRP around the covering in the cable core outside, aramid fiber twisted wire has high strength, high modulus, prevents that the cable core is loose, makes the pliability of cable core better, improves the holistic tensile strength of cable core.

4. By adding the central tensile nylon fiber rope in the cable core, the cable can better bear lateral pressure during bending, so that the cable can keep a better circular section in the bending process, and the bending resistance of the cable is greatly improved.

The PET resin tape is longitudinally wrapped on the outer surface of the protective layer and is plated to form a copper foil layer, the copper foil layer and the protective layer form an integrated structure, and when the cable is bent, the protective layer and the cable core are correspondingly slid and rubbed, so that the copper foil layer is effectively prevented from cracking, the stability of the shielding characteristic of the cable is ensured, and the durability and the usability are better.

Drawings

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

Description of reference numerals:

1-insulating wire core, 2-central tensile nylon fiber rope, 3-PET resin tape longitudinal wrapping protective layer, 4-copper foil layer, 5-nylon anticorrosive layer, 6-silane grafted cross-linked high-density polyethylene outer sheath, 7-inner conductor, 71-central copper stranded wire, 72-outer copper stranded wire and 8-XLPE insulating layer.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, the bending-resistant 5-core insulated cable according to the embodiment of the present application includes five insulated wire cores 1, which are twisted together around a central tensile nylon fiber rope 2 to form a cable core, where the outer diameter of the cable core is 6mm to 9.5mm, and further, the lay length of the cable core is 8 to 15 times of the outer diameter of each insulated wire core 1. The cable core is coated with an AFRP wrapping layer, a PET resin tape longitudinal wrapping protective layer 3, a copper foil layer 4, a nylon anticorrosive layer 5 and a silane grafted cross-linked high-density polyethylene outer sheath 6 in sequence. In one embodiment, the AFRP is formed by spirally winding a single-stranded aramid twisted wire around a covering, and the winding distance is two to four times of the outer diameter of the cable core, further, the wire diameter of the single-stranded aramid twisted wire is 0.08mm to 0.12mm, and further, the spiral direction of the single-stranded aramid twisted wire is the same as the twisting direction of the cable core. The thickness of the nylon anticorrosive layer 5 is not less than 0.1 mm. In one embodiment, the copper foil layer 4 is formed on the outer surface of the longitudinal protective layer 3 of the PET resin tape by electroplating, and the thickness of the copper foil layer 4 is 5 μm to 10 μm. The thickness of the silane grafted cross-linked high-density polyethylene outer sheath 6 is preferably 0.45mm to 3.8 mm.

Insulating sinle silk 1 includes inner conductor 7 and XLPE insulating layer 8, inner conductor 7 is central copper strand wires 71 and centers on the outer copper strand wires 72 of central copper strand wires 71 outside are stranded jointly and are constituted, central copper strand wires 71 with outer copper strand wires 72 are that a plurality of diameters are 0.05mm to 0.1mm tin-plated copper monofilament transposition and constitute, central copper strand wires 71 with the transposition of outer copper strand wires 72 is the same, central copper strand wires 71 lay length is 6mm to 25mm, and is preferred, central copper strand wires 71 lay length is 9mm to 20 mm. The lay length of the outer layer copper stranded wires 72 is 1.1-1.5 times of that of the central copper stranded wires 71, and preferably, the lay length of the outer layer copper stranded wires 72 is 11-28 mm.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. Resistant 5 core insulated cable of crooked type, characterized by: the cable comprises five insulation wire cores (1) which are stranded together around a central tensile nylon fiber rope (2) to form a cable core, wherein the outer diameter of the cable core is 6mm to 9.5mm, the cable core is externally and sequentially coated with an AFRP (atomic layer reduction) wrapping layer, a PET (polyethylene terephthalate) belt longitudinal wrapping protective layer (3), a copper foil layer (4), a nylon anticorrosive layer (5) and a silane grafted crosslinked high-density polyethylene outer sheath (6), the insulation wire cores (1) comprise an inner conductor (7) and an XLPE (cross linked polyethylene) insulating layer (8), the inner conductor (7) is formed by stranding a central copper stranded wire (71) and an outer copper stranded wire (72) which is arranged outside the central copper stranded wire (71) together, the central copper stranded wire (71) and the outer copper stranded wire (72) are formed by stranding a plurality of tinned copper single wires with diameters of 0.05mm to 0.1mm, the central copper stranded wire (71) and the outer copper stranded wire (72) are stranded wires in the same direction, the twisting distance of the central copper stranded wire (71) is 6mm to 25mm, and the twisting distance of the outer layer copper stranded wire (72) is 1.1 times to 1.5 times of the twisting distance of the central copper stranded wire (71).

2. The bend resistant 5-core insulated cable of claim 1, wherein: the twisting distance of the central copper stranded wire (71) is 9mm to 20 mm.

3. The bend resistant 5-core insulated cable of claim 1, wherein: the lay length of the outer layer copper stranded wire (72) is 11mm to 28 mm.

4. The bend resistant 5-core insulated cable of claim 1, wherein: the thickness of the nylon anticorrosive layer (5) is not less than 0.1 mm.

5. The bend resistant 5-core insulated cable of claim 1, wherein: the cable core lay length is 8 to 15 times of the outer diameter of the insulated wire core (1).

6. The bend resistant 5-core insulated cable of claim 1, wherein: the outer surface of the PET resin tape longitudinal wrapping protective layer (3) is electroplated to form the copper foil layer (4), and the thickness of the copper foil layer (4) is 5-10 mu m.

7. The bend resistant 5-core insulated cable of claim 1, wherein: the AFRP is formed by spirally winding single-stranded aramid twisted wires on the winding layer, and the winding distance is two to four times of the outer diameter of the cable core.

8. The bend resistant 5-core insulated cable of claim 7, wherein: the diameter of the single-stranded aramid twisted wire is 0.08mm to 0.12 mm.

9. The bend resistant 5-core insulated cable of claim 7, wherein: the spiral direction of the single-stranded aramid twisted wire is the same as the twisting direction of the cable core.

10. The bend resistant 5-core insulated cable of claim 1, wherein: the thickness of the silane grafted cross-linked high-density polyethylene outer sheath (6) is 0.45mm to 3.8 mm.