A kind of thermal diaphragm preforming method

Abstract

The invention discloses a thermal diaphragm preforming method. A combined detachable tooling is used as a shared forming tool for laying and thermal diaphragm preforming. After the prepreg is laid and pre-compacted on the combined preforming tooling, The auxiliary laying tooling is removed, and the thermal diaphragm preforming operation is performed on the reserved preformed main body tooling, and finally the desired prepreg laminated preform is obtained. This method can solve the problem that at least two sets of tooling for laying and preforming are required in the traditional thermal diaphragm preforming process, eliminates the defect of deformation of the material caused by the transfer of the uncured prepreg material, and avoids the repeated positioning of the prepreg material The process is of great significance for improving the forming accuracy, quality and forming efficiency of the thermal diaphragm preform.

Description

technical field [0001] The present invention relates to a composite material preforming method, more particularly, to a thermal membrane preforming method which eliminates the transfer process of uncured prepreg. Background technique [0002] Siding-reinforced composite materials are widely used in the aerospace field because of their efficient reinforcement of structures. The ribs of siding reinforced composite materials are mostly L-shaped, C-shaped, T-shaped, I-shaped, Ω-shaped, etc. Whether the co-curing or co-bonding process is used, they are faced with the preparation of a large number of preforms. The forming efficiency and quality stability of paving are increasingly difficult to meet the development requirements. [0003] In recent years, with the development and maturity of the automatic forming technology of composite materials, two automatic forming methods are usually used for the preparation of preforms. The first method is to prepare the pre-formed body thro...

AI Technical Summary

Problems solved by technology

This method involves the transfer process of uncured prepreg between two sets of tooling, resulting in deformation of the prepreg

In addition, this method needs to complete the secondary positioning of the blank on the thermal diaphragm preforming tooling, but the laminated edges of automatic wire laying or automatic tape laying are often non-aligned, and it is difficult to achieve accurate positioning, resulting in prepreg The positional deviation of the blank and the deviation of the fiber angle affect the molding accuracy and quality

Images