Manufacturing method of special polyvinyl chloride insulation electric wire and electric wire

Abstract

The invention relates to a manufacturing method of a special polyvinyl chloride insulation electric wire and the electric wire. The external diameter of the electric wire ranges from 8.2 millimeters to 9.2 millimeters, the structure of the electric wire is in a way that a tin-plated copper single wire is stranded to form a conductor, an insulation layer wraps the conductor to form an insulation wire core, two insulation wire cores are stranded to form a pair-twisted wire core, a first isolation layer comprising a layer of polyester tape wraps the pair-twisted wire core, a plurality of pair-twisted wire cores wrapped by the first isolation layers are twisted to form a cable core, a gap of the cable core is filled with a filling rope, a second isolation layer comprising a layer of aluminum plastic composite tape wraps the cable core, a shielding layer is arranged outside the second isolation layer and comprises a tin-plated copper wire braided structure, and an external sheath wraps theshielding layer. The manufacturing method of the electric wire comprises the steps of 1) manufacturing the conductor; 2) extruding an insulation material to form the wire core; 3) producing the pair-twisted wire core; 4) producing the cable core; 5) producing a weaving layer; and 6) extruding a sheath material and forming a cable. The cable has excellent technical performance and is particularly applicable to a control system in a low-temperature resistant occasion.

Description

technical field [0001] The technical proposal relates to the technical field of electric cables, specifically a special polyvinyl chloride insulated electronic wire with strong anti-interference ability. Background technique [0002] Electronic wire is an abbreviation for the internal cable of electrical equipment. The electrification is mainly based on weak current, which is a different concept from the cable in the strong current category. [0003] At present, the operating environment of large-scale mechanical equipment is relatively special, requiring high anti-interference performance of electronic wires and good flexibility of cables. For example, cables used in northern regions must have strong low temperature resistance requirements, and the environment of cables can reach -40°C when they are used. And the cable is oil resistant and flame retardant. [0004] Although it may be relatively easy to achieve a certain individual requirement for cable design and producti...

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Problems solved by technology

[0004] Although it may be relatively easy to achieve a certain individual requirement for cable design and production, the superposition of these special requirements and the functional requirements of the cable itself is very high for cable design and production. It is difficult to achieve only by using common technical means

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