Three-layer co-extrusion machine head for double-color quartered insulation cable

Abstract

The invention discloses a three-layer co-extrusion machine head for a double-color quartered insulation cable. A machine shell, an outer-layer flow divider, a middle-layer flow divider, an inner-layerflow divider, a core bar, a core bar deviation adjusting bolt, a die sleeve base deviation adjusting bolt, an inner die core, a middle die core, an inner-layer core, a die sleeve adjusting wire ring,a die sleeve base, an insulation material A feeding runner, an insulation material B feeding runner and a protection sleeve feeding runner are included. Through the above scheme, the three-layer co-extrusion machine head has the advantages that the structure is simple, the machining technology is simplified, and the quality of finished products is improved; and very high practical value and popularization value are achieved in the technical field of wire and cable producing and machining.

Description

technical field [0001] The invention relates to the technical field of production and processing of electric wires and cables, in particular to a three-layer co-extrusion die for two-color four-part insulated cables. Background technique [0002] In the wire and cable industry, green / yellow combination colors (that is, yellow-green grounding wires) are required for insulated cores dedicated to identifying connection grounding or similar protective purposes. In the prior art, the green / yellow combination color insulated wire core is usually formed by two colors to meet the needs of power lines. In some occasions where there are many cables and the safety system is more complex, the multiple green / yellow combination color insulated cables used to connect the grounding, protection and lightning protection grounding wires are easy to confuse, which brings troubles to installation, use and maintenance. Great inconvenience. Usually, the insulation layer (insulation sleeve) of th...

AI Technical Summary

Problems solved by technology

In some occasions where there are many cables and the safety system is more complex, the multiple green / yellow combination color insulated cables used to connect the grounding, protection and lightning protection grounding wires are easy to confuse, which brings troubles to installation, use and maintenance. Great inconvenience

Usually, the insulation layer (insulation sleeve) of the conventional yellow-green grounding wire is produced separately, and the yellow-green surface is painted; after the insulation sleeve is produced and formed, the insulation sleeve is set on the cable conductor. And wrap the cable conductor in a heat-shrinkable way; the production efficiency of the yellow-green grounding wire produced by the above-mentioned method is low, and the manufacturing cost is relatively high

[0003] For this reason, various forms of green / yellow combined color insulated wire cores have been born, but there is no co-extrusion head dedicated to the production of various forms of green / yellow combined color insulated wire cores on the market, and the existing conventional The co-extrusion head can not meet the two-color four-point co-extrusion

Images