Molding tool for composite of closed angle structure

Abstract

The invention belongs to the technical field of composite manufacturing, and relates to a molding tool for a composite of a closed angle structure. By means of locating combination of a lower hard mold, a left edge strip profile cover plate, a right edge strip profile cover plate and a semi-rigid pressurization pad, the relative position and profile precision of a mold can be guaranteed, and therefore the boundary dimensional precision of a part is guaranteed; and meanwhile, in the demolding process after the part is molded, the semi-rigid pressurization pad can be firstly demounted from a closed angle web area, then the left edge strip profile cover plate and the right edge strip profile cover plate are demounted, the part is finally taken down from the lower hard mold, and part demolding is completed. Compared with a traditional rigid split mold of a closed angle structure, according to the molding tool for the composite, the parting surface jump of the split mold and part deviation caused by mold deformation after long-time use are eliminated, traces, caused by mold jointing, on the surface of the part are eliminated, and the surface quality of the part is improved; and meanwhile, the mold manufacturing difficulty is greatly reduced, the cost is greatly reduced, and the problem of complex demolding generated after the part is molded is solved.

Description

technical field [0001] The invention belongs to the technical field of composite material manufacturing, and relates to a composite material molding tool for closed-angle structures. Background technique [0002] Composite materials have become one of the most important contemporary aeronautical structural materials due to their high specific strength, high specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, good dimensional stability, and ease of large-area overall forming. . Among them, the "I" type and "J" type composite material beam structure, as a common structural part, is widely used in aircraft wings, vertical tails and other components. Due to the complex shape of the aircraft, the "I" and "J" composite beam structures often have a certain closed angle in the design process of wings, vertical tails and other components. How to ensure the dimensional accuracy and forming quality of the closed angle area is an important...

AI Technical Summary

Problems solved by technology

Since the closed corner part adopts a combination mold, the design combination and positioning are more complicated in the mold preparation work, and the metal mold is heavy. After laying up, it is combined with the open corner part for positioning, and it is difficult to turn over. It is difficult to demould the parts after forming, requiring precise details. Design and manufacture, the final molded parts may also have defects due to problems such as split mold fit clearance and mold deformation

Images