Die-changing apparatus without shutdown for middle/high voltage crosslinking cable production line

Abstract

The invention discloses a non-stop die changing device of a middle-high voltage cross-linked cable production line, aiming at solving the technical problem that a cover die device with an opposite opening structure is utilized to realize the non-stop die change in the production process of the middle-high voltage cross-linked cable. In order to solve the technical problem, the following technicalproposal is adopted: the non-stop die changing device of the middle-high voltage cross-linked cable production line comprises an extrusion die provided with an inner die; a die sheathing hole is arranged in the inner die and internally provided with a small die in a movable manner; and the small die has a vertical bisect structure. Compared with the prior art, the non-stop die changing device hasthe advantages of simple structure, easy operation, small waste volume of die, energy conservation and reliable performance.

Description

technical field [0001] The invention relates to a non-stop mold change device for a cross-linked cable production line, in particular to a non-stop mold change device for a medium-high voltage cross-linked cable production line. Background technique [0002] At present, three-layer co-extrusion continuous cross-linking units are mostly used in the insulation extrusion process of medium and high-voltage cross-linked cables. The biggest advantage is continuous extrusion and cross-linking for large-length production. This type of cross-linking unit usually has a cross-linking pipe as long as about 200m, so every time the unit is started and stopped, the cost is astonishing. According to calculations, each start-up of the cross-linking unit requires about 200m of lead wires, and at least 20m for insulation and eccentricity adjustment. In addition, it takes about 150m to debug in order to meet the process conditions, and nearly 60m of conductive wire cores are wasted every time ...

AI Technical Summary

Problems solved by technology

However, because the small mold used is in the shape of a sleeve, when changing the mold in actual production, the small mold must be taken out from the inner mold and sawed, so that it can be removed from the wire and replaced again, and the mold cannot be reused once it is used. use, resulting in waste of molds, and when threading small molds, it is necessary to thread from the place where the thread is released, and it takes a long distance, resulting in a waste of time

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