Copper coated aluminum four-core flame-retardant flexible electric cable manufacturing method

Abstract

The invention discloses a copper-clad aluminum four-core flame retardant flexible cable and a manufacturing method thereof. The method comprises the steps that: a copper-clad aluminum conductor is made into a single conductive wire core; the single conductive wire core is processed into a conductive wire core provided with the section of a fan shape; an insulation process is carried out to the conductive wire core provided with the section of the fan shape, and an insulation process for forming an insulation wire core provided with an insulation layer is carried out; a cable-froming process is carried out to four insulation wire cores provided with insulation layers, thereby forming a cable yarn; plastic is extruded on the cable yarn so as to form a flame retardant restrictive coating, wherein, the step that the copper-clad aluminum conductor is made into a single conductive wire core comprises the steps that: a wire-drawing machine is utilized to draw the copper-clad aluminum conductor into a single conductive filament; an annealer is utilized to carry out an annealing process to the single conductive filament; a wire-bunching machine is utilized to bunch a plurality of annealed single conductive filaments into braided wires; a wire twisting machine is utilized to twist a plurality of braided wires into the conductive wire core. The cable of the invention has the advantages of low copper consumption, light weight and low cost.

Description

Technical field [0001] The invention relates to wire and cable technology, in particular to a copper-clad aluminum four-core flame-retardant flexible cable and a manufacturing method thereof. Background technique [0002] For the concept of copper-clad aluminum, wire and cable manufacturers are not unfamiliar, that is, the structure of each conductive monofilament constituting the conductive core is processed into outer copper and inner aluminum, which can save a lot of money. The strategic resource of copper can also enable copper to exert its maximum function. There are many reports in the literature, such as Chinese patent documents, such as: the copper clad aluminum communication cable introduced in the Chinese Patent Authorization Announcement No. CN2881898, the copper clad aluminum data communication cable disclosed by CN2881899, and the copper clad aluminum conductor communication cable recommended by CN200979818Y , CN101060024A copper-clad aluminum conductor or copper-cl...

AI Technical Summary

Problems solved by technology

[0003] However, due to the small tensile force and low strength of aluminum, for copper-clad aluminum conductors with small diameters or small amounts of copper, the copper-clad aluminum conductors are easily broken and the processing difficulty is significantly increased, or even impossible to process.

However, if the diameter is increased or the amount of copper used is increased, the cable will be hardened, which is not conducive to laying

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