Weather-proof insulating power cable

Abstract

The invention discloses a weather-proof insulating power cable. The production steps of the weather-proof insulating power cable comprise wire drawing, wire stranding, cabling, armoring, extrusion molding and the like. The principle is simple, the design is reasonable, and the cable quality is improved by improving a wire drawing device and an extrusion molding device. The wire drawing device adopts staged multi-stage wire drawing, wire drawing stability degree is high, quality precision is good, and the yield of the conductor wires can be improved; a conductor wire rod is used for stranding and cabling to form a conductor wire core, and is not prone to damage such as burrs and the like, the surface of the conductor wire core is clean, the conductor wire core is easier to wrap during extrusion molding, and the extrusion molding device has the functions of rolling and crushing cable materials, has the advantages of kneading, increasing shear stress, accelerating exhaust and reducing extrusion backflow, can effectively improve the melt extrusion molding effect of cables, guarantees the extrusion molding quality, and accordingly improves the outer insulation performance of the cables.

Description

technical field [0001] The invention relates to the technical field of cable processing and production, in particular to a weather-resistant insulated power cable. Background technique [0002] A cable is usually a rope-like cable formed by twisting several or groups of wires, and often has the characteristics of internal energization and external insulation. [0003] Cable production often needs to go through multiple processes, among which wire drawing is directly related to the processing quality of the cable conductor core, and extrusion is directly related to the coating insulation effect of the conductor core. [0004] The wire drawing equipment and extrusion equipment currently used often have certain defects. First of all, as far as the wire drawing equipment is concerned, there are often problems of poor guiding performance and poor applicability, which seriously affect the normal operation and drawing accuracy of the wire drawing of the inner conductor material cab...

AI Technical Summary

Problems solved by technology

[0004] The wire drawing equipment and extrusion equipment currently used often have certain defects. First of all, as far as the wire drawing equipment is concerned, there are often problems of poor guiding performance and poor applicability, which seriously affect the normal operation and drawing accuracy of the wire drawing of the inner conductor material cable , and can only draw a single specification of the inner conductor raw material cable, corresponding to the extrusion equipment, the conventional extruder does not have the crushing function of the cable material, and the large particle of the cable material is often melted during the melting process. Insufficient problems, easy to mix solid particles, seriously affect the extrusion effect, and lack the necessary preheating function, which is not conducive to the improvement of extrusion efficiency; the above problems have a decisive impact on the quality and performance of the cable

Images