Curing formation method for non-flat plate composite product and shaping mould

Abstract

The invention discloses a curing forming method and a forming die used for a non-slab composite material part. The method comprises the steps as follows: composite material part blank is arranged on a rigid die body which has the same shape with the processing shape and gluing and layer-paving are carried out according to the required dimension; after the layer-paving is finished, the composite material part blank is arranged on the rigid die body; furthermore, surfaces with plane are provided with elastic soft layers; corner pure rubber layers which are connected with elastic soft layer joint seams are arranged at corner profile so as to form a soft die surface; subsequently, vacuum bag auxiliary material is arranged on the soft die surface so as to prepare the vacuum bag curing forming composite material part. By the flexible soft die consisting of rubber-fabrics, the method arranges the composite material part blank on the surface of the soft die after the layer-paving is finished; the method for preparing the vacuum bag curing forming part solves the surface quality problems in the prior art that the non-die surface of the bag-pressing forming composite material part is crapy, accidented and has no gloss and the like, and improves the working efficiency.

Description

technical field [0001] The invention relates to a solidification molding method and a molding die for a non-slab composite material product. Background technique [0002] In the known technology, fiber-reinforced polymer-based composite material parts, especially advanced composite material parts, are widely used in pre-impregnated fabric lamination and curing molding process. When curing, vacuum bag-autoclave or vacuum bag-curing furnace forming bag compression molding technology is usually used. Generally, a single-sided forming mold is used, and the quality and shape of the mold-adhesive surface are guaranteed by the mold, while the quality of the remaining surfaces is guaranteed by vacuum bag pressure molding. This kind of bag-pressed composite parts is molded on one side. For non-flat composite parts with curved surfaces or folded edges, unavoidable surface wrinkles, unevenness, and lack of luster often occur on the non-mold surface. . The surface quality defects of ...

AI Technical Summary

Problems solved by technology

In foreign countries, the surface of the laminated layer is covered with a layer of porous aluminum plate, also known as a pressure equalizing plate. The disadvantage is that the rigid pressure equalizing plate is poorly bonded to the parts and the working cycle is long.

At present, there is no relevant literature report on the method of laying a soft mold on the surface of the laminated part to ensure or improve the surface quality of the non-mold surface of the part.

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