Double-layer co-extrusion insulated cable and extrusion device for production thereof

The invention provides a double-layer co-extrusion insulated cable, and the cable comprises a cable main body which is internally provided with a cable core. The conductor shielding layer is arranged on the surface of the cable core; the inner insulating layer is arranged on the surface of the conductor shielding layer, a steel wire is wound on the surface of the inner insulating layer, an outer insulating layer is arranged on the surface of the steel wire, and a protective sleeve is arranged on the surface of the outer insulating layer. According to the double-layer co-extrusion insulated cable and the extrusion device for production of the double-layer co-extrusion insulated cable, the conductor shielding layer, the inner insulating layer, the outer insulating layer and the protective sleeve are arranged on the surface of the cable core for cooperative use, so that the double-layer protection effect can be achieved when the cable is used outdoors, and the situation of damage under the high-temperature condi