A production method for color cable core with color insulation layer

Abstract

The invention relates to a manufacturing method for a dichroic cable core provided with a colored insulation material layer on the outside, wherein, when the insulation material layer is extruded on a conductor, two plastic extruding machines are used; one is a plastic extruding machine for uncolored insulation materials and the other is a plastic extruding machine for colored insulation materials; the two plastic extruding machines share a double-layer coextrusion handpiece; the uncolored insulation materials are taken as inner layer insulation materials, and the colored insulation materials are taken as outer layer insulation materials; two layers of insulation materials are combined in the same handpiece, and simultaneously extrusion of double-layer insulation materials is completed on a cable conductor. By adoption of the method for color changing of the insulating core, users only need to extrude colored insulation materials in a donkey engine completely, and obviously the means can greatly reduce the number of color changing wastes. By adoption of the method of the invention, the interlocking operation of the two plastic extruding machines is realized and the operating procedure is simplified.

Description

technical field [0001] The invention relates to a production method of a color separation cable core with a colored insulating material layer outside. Background technique [0002] According to the provisions of GB6995.4~GB6995.5 (wire and cable identification mark): electrical equipment, wire and cable insulation cores, cables with five cores or less should generally be identified by color, and the insulation of cable cores should be colored insulating material or on the surface of the insulation. Use other suitable methods for coloring; cross-linked polyethylene insulated or polyethylene insulated or PVC insulated power cables, insulated wire cores should be identified by color, PVC insulated cables should generally use colored insulating materials, insulated wires that are not easy to color The core allows signature yarn or signature ribbon. [0003] For PVC insulated cables, the insulating wire core is generally extruded with a layer of colored insulating material. In t...

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Problems solved by technology

[0004] XLPE or PE insulated cables, if the insulated wire core adopts the method of extruding a layer of colored insulating material, a SJ-90 extruder, the waste generated by one color change is 9kg, silane XLPE insulation The material is calculated at 16 yuan / kg, the color is changed 14 times a day, and the waste loss generated is 2016 yuan / day; if the identification method of marking yarn or marking ribbon is used for the insulated core, the marking is not obvious, and it is easy to cause uneven electric field distribution , more importantly, users do not accept, it is difficult to promote in the market

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