Production equipment for dual-color insulated wire

Abstract

The invention discloses production equipment for a dual-color insulated wire, which consists of a horizontal plastic extruding machine and a vertical stripping extrusion machine. The horizontal plastic extruding machine comprises a machine body, a machine head body and a mold. A main material input hole is arranged on the machine head body. The machine body is connected with the main material input hole of the machine head body. The mold comprises a mold core seat, a mold sleeve, a mold core, a flue dispensing body and an outer mold. A pigment input hole is arranged in the radial direction ofthe highest radial position of the external surface of the front part of the mold sleeve. A pigment filling opening which is communicated with the pigment input hole is arranged at the highest radialposition of the external surface of the front part of the outer mold. A pigment trench which is communicated with the inner cavity of the outer mold is arranged on the external surface of the outer mold. A pigment output through hole is arranged in the axial direction of the center of the bottom surface of a spiral drum. A stripping extrusion nozzle which is abutted with the pigment input hole ofthe mold sleeve is connected onto the pigment output through hole. A through hole is arranged in the radial direction of the bottom surface of the spiral drum. A bar-shaped change-over switch is inserted into the through hole. By turning the change-over switch, the pigment output through hole can be communicated with or isolated from the stripping extrusion nozzle.

Description

technical field [0001] The invention relates to a manufacturing equipment for double-color insulated electric wires. Background technique [0002] In the low-voltage power system, power transmission is generally a three-phase four-wire system or a three-phase five-wire system. Line and ground are effectively distinguished. [0003] In the national standard GB / T5023.1-2008, there are clear regulations on the identification of wire and cable insulated cores: "The insulated cores of cables should be identified by colored insulation or other suitable methods, except for the insulation identified by yellow / green combination color Except for the core, only one color shall be used for each type of insulation of the cable". All cable manufacturers adopt the overall coloring of a single cable according to the requirements of the above-mentioned national standards, that is, mix the insulating material and the color masterbatch in proportion, and color according to the international ...

AI Technical Summary

Problems solved by technology

Although this production process meets the requirements of the national standard, there are the following problems when changing the color of the insulation: In order to ensure that the color meets the requirements of the national standard color code, it is necessary to thoroughly clean the color of the front insulation: disassemble and clean the screw on the extrusion equipment , machine head, and feeding hopper, the screw and machine head need to be heated for at least 1.5 hours before the next insulated wire can be produced. Therefore, the labor intensity of the worker's operation is high and the production efficiency is low; if the equipment is not disassembled and cleaned, it is necessary to Cleaning the original material with the material of the production color not only causes a serious waste of material, but also takes a long time to discharge

The thickness of the two-color insulation formed by this process is from the conductor to the outer surface, which not only wastes the color masterbatch, but also consumes a lot of energy for the production of insulated wires as long as the phase sequence can be distinguished

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