Glass composite insulator and manufacturing method therefor

Abstract

A manufacturing method for a glass composite insulator is disclosed. The manufacturing method comprises the following steps: a skeleton umbrella edge structured glass part is moulded; a silicone rubber umbrella cover is covered and wrapped with the glass part; an assembling mold integral injection mode is adopted; due to the use of the assembling mold, the silicone rubber umbrella cover (with multiple umbrella skirts) is integrally molded, so that the molded silicone rubber umbrella cover is attractive in appearance, high in efficiency, and less in interfaces, the electrical performance of the product is improved; a multi-point symmetrical type adjustable glue injection technology is adopted to be matched with a mold cavity pressure control scheme in the molding process in order to balance the stress conditions of each point on the glass part to prevent the glass part from being crushed; the mold cavity is integrally subjected to vacuumizing processing to reduce the generation of rubber material bubbles; iron caps and steel caps are cemented with insulating parts through cement adhesive, so that the influence on the cement adhesive performance caused by the high temperature of the molds is avoided, and the mechanical property dispersion of the product is greatly reduced; the cement adhesive is not covered with the silicone rubber, so that the product completely follows the zero self-destruction characteristic of the glass insulator; and the influence on the umbrella cover molding caused by the central straightness of caps generated by cement adhesive fittings is avoided.

Description

technical field [0001] The invention relates to a glass composite insulator and a manufacturing method thereof. Background technique [0002] The glass composite insulator is a new type of insulator with a layer of silicone rubber attached to the glass surface of the glass insulator and a rubber shed. Theoretically, this type of insulator combines some features of glass insulators and composite insulators. With certain performance advantages, it has been gradually accepted and used by the power market in recent years. [0003] The commonly used glass composite insulators are generally glued first and then formed. First, the fittings at both ends (iron caps, steel feet) are glued together with cement and glass parts, and then molded part of the shed and bonded with silicon. The molding of the silicone rubber umbrella skirt is completed by methods such as rubber umbrella skirt and smearing room temperature vulcanized silicone rubber. This kind of process will make the glued...

AI Technical Summary

Problems solved by technology

This kind of process will make the glued fittings, glass parts and cement adhesives need to withstand the influence of high temperature of the mold, which will easily cause the dispersion of mechanical strength to increase; although the product has the characteristics of zero-value self-explosion of glass insulators, due to After forming and positioning of the fittings, the silica gel wraps and bonds the fittings at both ends at the same time, and the insulator cannot fall off or be visually identified after self-explosion

The molding process is prone to defects such as rubber nest gas, glass parts crushed, and multi-stage molding, many interfaces, and poor appearance quality

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