Moulding method for insulating part manufacture of high-voltage cable accessory and moulding mold

Abstract

A forming die for producing an insulation part of a high-voltage cable accessory is formed by an upper die (6), a lower die (5) and a die core (8). The shape of a die cavity is the shape of the insulation part of the high-voltage cable accessory and is characterized in that: a group of vertical opens (2) are arranged near an end part of the upper die (6), a plurality of vent holes (7) are arranged on a vertical axis of the surface of the upper die (6); a group of transverse opens (4) corresponding to the vertical opens (2) are provided on the lower die (5), the transverse opens are communicated with the die cavity, the lower die (5) is also provided with a group of transverse opens (3) and the vertical opens (1) communicated with the lower die (5), and the transverse opens are communicated with the die cavity. The invention can integrally mold the insulation part of the high-voltage cable accessory in one step. One set of dies can simultaneously use liquid and solid materials. Each part molds uniformly and the exhaust is unblocked. A feed open is small and the heating is uniform. Thus the process stability is improved, the die design is relatively simple. A vacuum-pumping device is omitted, and the materials are saved, thus the cost is reduced.

Description

technical field [0001] The invention belongs to the field of manufacturing high-voltage cable accessories, and in particular relates to a molding die used in the manufacture of insulating parts of high-voltage cable accessories. Background technique [0002] At present, in the manufacturing industry of high-voltage cable accessories, the forming method and mold are used for forming liquid materials. This method and mold can achieve 110kV and above cable accessories, as mentioned in the patent CN1612798A; The solid material is molded by the molding method and mold of upper and lower molds. This method and mold can only be used for cable accessories of 35kV and below, and the above two methods and molds cannot take into account the molding of liquid and solid materials at the same time. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a molding die for the manufacture of insulating parts of ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the manufacturing industry of high-voltage cable accessories, the forming method and mold are used for forming liquid materials. This method and mold can achieve 110kV and above cable accessories, as mentioned in the patent CN1612798A; Solid materials are molded by upper and lower clamping molding methods and molds. This method and molds can only be used for cable accessories of 35kV and below, and the above two methods and molds cannot take into account the molding of liquid and solid materials at the same time.

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