A compression molding die assembly for a thermoplastic composite I-shaped reinforced member

Abstract

The invention provides a molding die assembly of a thermoplastic composite material I-shaped reinforcement component. The molding die assembly comprises a flat preform die, a C-shaped preform die andan I-shaped reinforcement component die. A C-shaped preform is formed by a flat preform through die pressing, and die pressing can be carried out only by placing the flat preform into a positioning groove of the C-shaped preform die. A left trapezoid strip and a right trapezoid strip of the I-shaped reinforcement component die are provided with inclined surfaces with narrow upper portions and widelower portions, a left wedge block and a right wedge block are provided with inclined surfaces with wide upper portions and narrow lower portions matched with the inclined surfaces on the left trapezoid block and the right trapezoid block, a set of attached inclined surfaces capable of sliding relatively are formed on the left side and the right side respectively, so that downward molding pressure of a pressing block is converted into pressure pointing to the horizontal direction of an I-shaped reinforcement rib by the left trapezoid strip and the right trapezoid strip, the molding pressure in the single vertical direction is converted into the molding pressure in the downward direction and the left and right directions, the equipment and the process are simplified, and economy, rapidnessand reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of composite material forming, in particular to a molding die assembly of a thermoplastic composite I-shaped reinforced member. Background technique [0002] Thermoplastic resin-based composite materials (referred to as thermoplastic composite materials in this application) have good heat resistance, excellent damage tolerance, good impact resistance, short molding cycle, high production efficiency, and repeated molding. The aerospace field is gaining more and more attention. A class of advanced thermoplastic composite materials represented by carbon fiber reinforced polyether ether ketone is increasingly applied to the main / secondary load-bearing components in the aviation field. Poor performance and penetrability, difficulty in bonding between adjacent layers, difficulty in eliminating voids in the laminate, and difficulty in resin flow during the molding process, so the manufacturing of its parts relies ...

AI Technical Summary

Problems solved by technology

In the autoclave, the pressure of the filled gas is used to form a uniform pressure on the composite material, so the molding of the I-shaped stringer of the composite material can be easily realized in the autoclave, but the equipment of the autoclave is expensive, and the molding cost is high, and The molding process is more complicated, time-consuming and labor-intensive, and it is difficult to meet the requirements of industrialization

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