Extrusion mold for electric cable

Abstract

The invention relates to the electric wire and electric cable manufacture field, and particularly to a plastic extruding mould required by production of a concentric sparse winding shielding layer of a plurality of single-wire conductors under a cable sheath layer. Disclosed is the plastic extruding mould for producing electric cables. The plastic extruding mould includes a plastic extruding mould base; a male mould and a female mould are respectively arranged at two sides of a cavity in the plastic extruding mould base, a mould cavity is formed between the male mould and the female mould, the female mould is connected with a forming pipe, and the male mould is connected with a mould body; the interior of the mould body is connected with a stranding cage through bearings, the interior of the stranding cage is provided with a threading pipe, the stranding cage can rotate around the threading pipe, the right end of the stranding cage is provided with a distributing terminal board, and the distributing terminal board is provided with wire harness conduits. A wire core is passed through the threading pipe, then through the male mould and the female mould, next through the forming pipe, and is connected with a traction machine set; and sparse winding single wires are passed through the wire harness conduits and the distributing terminal board.

Description

technical field [0001] The invention relates to the field of manufacturing and processing of electric wires and cables, in particular to an extrusion mold required for the manufacture of a concentric sparsely wound shielding layer of multiple single-wire conductors under a cable sheath layer. Background technique [0002] With the rapid development of the wire and cable industry, wire and cable are not only a simple transmission medium, but also the quality of power transmission and environmentally friendly power supply are increasingly valued by the wire and cable manufacturing industry. Anti-interference cables, frequency conversion cables, low-radiation cables, etc., are born with shielded and isolated electromagnetic cables. Most wires and cables are suitable for the transmission of alternating current. Due to the change of power frequency, a large number of radiated electromagnetic fields are generated. These radiated electromagnetic fields permeate the environmental sp...

AI Technical Summary

Problems solved by technology

Due to the many processes in this method, the uniformity of the single-wire gap distribution of the sparsely wound shielding layer is poor, so that the cable shielding effect cannot reach the best effect.

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