Flexible soft shielding cable and preparation method thereof

Abstract

The invention relates to the technical field of wires and cables, in particular to a flexible shielding cable and a preparation method thereof, and the cable comprises a conductor wire core which comprises a central conductor and an insulating layer extruded on the outer side of the central conductor; the elastic supporting layer is arranged and coated on the outer side of the insulating layer; the shielding layer is arranged to wrap the outer side of the elastic supporting layer; the liner layer and the outer sheath are sequentially arranged on the outer side of the shielding layer; according to the utility model, the elastic support layer formed by spirally winding the elastic rope around the outside of the conductor wire core by one circle is arranged, and the elastic support layer is easier to bend and twist in the axial direction compared with the existing plastic insulator which is integrally foamed and molded; and the shielding layer is attached to the outer wall of the elastic supporting layer to form a mutually matched corrugated structure, so that the shielding layer not only has a good shielding effect, but also has good bending performance.

Description

technical field [0001] The invention relates to the technical field of electric wires and cables, in particular to a preparation method thereof. Background technique [0002] A typical shielded cable is divided into four layers from the inside to the outside: the central copper wire, the plastic insulator, the mesh conductive layer and the wire sheath. The central copper wire and the mesh conductive layer form a current loop. If there is a relatively large extrusion in a certain section of the cable Or twisted, the distance between the center wire and the mesh conductive layer is not consistent, which causes internal radio waves to be reflected back to the source of the signal, an effect that reduces the acceptable signal power. [0003] In order to overcome this problem, in the prior art, a layer of plastic insulator was added between the central wire and the mesh conductive layer to ensure a consistent distance between them, which also caused the cable to be stiff and not ...

AI Technical Summary

Problems solved by technology

[0004] At present, plastic insulators in wires and cables generally use physically foamed PE or PVC materials, but when shielded cables are applied to industrial robots for signal transmission, they not only need to be bent, but also need to be twisted to a large extent. Robots used in Japan in the past In the design of control cables or shielded cables on the Internet, a relatively large and sufficient redundancy design is usually reserved, but in domestic industrial shielded cables, due to cost and aesthetic considerations, no large winding The redundant torsion makes the insulator outside the conductor of the existing integral foaming technology unable to adapt to the working conditions of bending and torsion

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