Forming method of cavity type composite material part with lateral edge and convergence hole

Abstract

The invention discloses a forming method of a cavity type composite material part with a lateral edge and a convergence hole. The forming method comprises the following steps: laying a prepreg piece on the outer surface of a male die (1) to form a material layer; taking the pre-compacted material layer off from the male die (1), putting the material layer into a combined female die (4) in a way with the opening of the material layer directed upwards, sequentially putting a soft die (2) and a core die (3) into the cavity of the material layer; packaging the combined female die (4) and the material layer into a vacuum bag and further performing compacting; sending the combined female die (4) and the material layer into an autoclave to enable the material to be solidified for formation; after solidifying for formation is completed, opening the combined female die (4) and taking out the solidified and formed finished product of the part. Since a laying method characterized by the combination of the male die (1) and the female die (4) is adopted and the problem of unloading of the core die is solved by adopting the soft die, parts of same kind can be smoothly formed.

Description

technical field [0001] The invention relates to a molding method of a composite material part with a side edge and a converging cavity, in particular to a molding method of a composite material part with an acute side edge and a converging cavity. Background technique [0002] A cavity-type composite material part with side edges and converging openings is a compound with one end opening converging, that is, the internal cross section of the cavity is larger than the opening cross section, and at least one cavity has side edges, especially the sharp angle of the side edges is an acute angle. Material cover shaped parts. Such composite parts generally adopt the autoclave forming method, and the forming steps mainly include four steps of prepreg laying, bag sealing and compaction, autoclave forming, and demoulding. Usually the prepreg lay-up step adopts the female lay-up method or the male die lay-up method. If the female mold lay-up method is adopted, that is, the prepreg i...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems existing in the prior art that it is difficult to manually lay up the cavity side edges and corners of the cavity-type composite material parts with side edges and convergent openings, and that it cannot be demolded after curing and molding, the present invention provides a Forming method of rib and converging mouth cavity type composite material parts

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