A plastic extrusion die for cable production

Abstract

The invention relates to the field of cable production, in particular to a plastic extrusion die for cable production. The technical problem to be solved by the invention is to provide a plastic extrusion die for cable production which can avoid incomplete bonding of plastics and core wires and prevent the temperature of the machine head from dropping. A plastic extrusion die for cable productioncomprises a die sleeve cylinder, a mold core cylinder, a machine head, an annular slide rail and an annular slide block. The die sleeve cylinder for receiving plastics is provided with a die sleeve inner cone, the die sleeve inner cone is used for pouring molten plastics, the die core cylinder used for receiving the core wire of the electric wire is provided with the die core inner cone, the diedcore inner cone is used for penetrating the core wire of the electric wire, the machine head is used for wrapping molten plastics is fixedly connected with the die core cylinder and communicates withthe die core inner cone, and is connected with the die sleeve inner cone in a clamping mode. The invention achieves the effect of avoiding the incomplete bonding of the plastics and the core wire andpreventing the temperature of the machine head from dropping.

Description

technical field [0001] The invention relates to the field of cable production, in particular to a plastic extrusion die for cable production. Background technique [0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. Plastic wire is one of the cables. The quality of plastic wire products is related to the quality of the plastic itself, the performance of the extruder, the extrusion temperature, the tension of the take-up and take-up wire, the speed, the preheating of the core wire, and the cooling of the plastic after extrusion. , head mold design and other factors, the most important of which is the final shaping device in the extrusion process of plastic wires - the mold. The geometric shape of the mold, the design and size of the mec...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problem that the plastic and the core wire are incompletely bonded when the common extrusion die is forming the electric wire, the length of the outermost end of the mold sleeve protruding from the machine head is too long, which will affect the heat transfer effect, and the formed electric wire is melted After the plastic is wrapped, not cooling quickly will also affect the quality of the finished product. The technical problem to be solved by the present invention is to provide a plastic extrusion die for cable production that can avoid the incomplete combination of the plastic and the core wire and prevent the temperature of the machine head from dropping.

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