Integrated molding and pouring process for semi-enclosed glass fiber reinforced plastic products with infolded flanges

Abstract

The invention relates to an integrated molding and pouring process for semi-enclosed glass fiber reinforced plastic products with infolded flanges. The process comprises the steps of: first, producing a mould, wherein the mould consists of a main body part and a flange part, a positioning and locking part is embedded at the side of the main body part in advance; the flange part is provided with a locking structure corresponding to the position of the positioning and locking part, and is fixed on the main body part by the positioning and locking part; second, paving a product framework on the inner wall of the mould; third, paving one sealing film layer on the surface of the framework, wherein the edge of the sealing film extends out of the cavity of the main body part of the mould, rounds the flange part, and is adhered on the peripheral face of the edge of the main body part of the mould with sealing adhesive tape, on the part fixedly provided the flange part, then, a hermetical space is formed between the main body part of the mould and the sealing film, the product framework and the flange part of the mould are encapsulated in the hermetical space, and the clearance between the mating faces of the main body part and the flange part is not communicated with the atmosphere; fourth, processing a suction port and a pouring port, which are respectively connected with a vacuum pump and a pouring device, on the sealing film; fifth, vaccumizing and pouring resin; and sixth, demoulding.

Description

technical field [0001] The invention relates to a pouring process in industrial production, in particular to a pouring process for the integral molding of a semi-closed glass fiber reinforced plastic product with an inwardly folded flange. It can be widely used in the production of semi-closed large-scale composite materials with inwardly folded flanges, such as wind turbine casing products and wind turbine blades, etc. Background technique [0002] Vacuum infusion is a technology that uses vacuum pressure to make moldings. Its concept is to lay fiber reinforced materials and foam materials directly on the mold to form a product skeleton, and then cover it with a vacuum sealing film to seal the mold, and then use a vacuum pump to The air is pumped to a negative pressure state, and finally the resin is poured into the entire mold system through the rubber inlet pipe on the sealing film, and soaks every gap in the skeleton layer of the product. The entire pouring process requ...

AI Technical Summary

Problems solved by technology

Although it can integrally form products with inwardly folded flanges, simplify the manufacturing process, and reduce labor intensity of workers, it also has the following main shortcomings: 1. The sealing film fails to adjust the gap between the main part of the mold and the flange part. Sealing makes the gap between the main part of the mold and the flange part form the main air leakage point, the sealing of the mold is poor, the vacuum formed in the mold is low, and then the quality of the product is affected, the scrap rate remains high, and the production efficiency is low. , the production cost is high; 2. The pull screw holes set on the main part of the mold and the flange part form a secondary air leakage point, which further reduces the sealing performance of the mold and affects the product quality and normal production

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