Fibre reinforced resin based composite material fin piece molding mould

Abstract

The invention provides a molding die for fiber reinforced resin-based composite vanes. The invention relates to molding die for composite vanes, which aims to solve the problems that the prior composite vane molding die is insufficient in die assembly and too tight to seal die cavities, can not discharge air in a product, can not guarantee the geometrical size of the airfoil surface of a vane and the relative position of a vane handle, and causes that the product is large in porosity or has air holes on surface. A parting surface of an upper die and a lower die is provided with an upper model groove; a parting surface of the lower die and the upper die is provided with a lower model groove; a first positioning pin is arranged in a first positioning pinhole and a third positioning pinhole; a second positioning pin is arranged in a second positioning pinhole and a fourth positioning pinhole; and a gap between the parting surfaces of the upper die and the lower die is configured as a material overflow groove. The material overflow groove can ensure that the upper and lower dies are sufficient in die assembly; die cavities are incompletely sealed; the air in the product can be smoothly discharged; the geometrical size of the airfoil surface of the vane and the relative position of the vane handle are guaranteed; and the product is good in surface quality.

Description

technical field [0001] The invention relates to a molding die for a composite material wing. Background technique [0002] The wing is an important part to ensure the flight distance and accuracy of the product. The application of advanced composite materials on the wing can minimize the structural weight and improve product performance; at the same time, it can also meet some special performance requirements of the product, such as stealth performance , Pneumatic cutting, anti-corrosion, etc. The airfoil shape of the wing must have high geometric precision, high structural strength and rigidity to ensure the flight performance of the product. The forming methods of the wing mainly include assembly type and integral type. Assembled type means that the skin and frame of the wing are produced separately, and then bonded together; , to overcome the problem of discontinuous fibers of the assembled upper and lower skins, and reduce the subsequent bonding and assembly problems. ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the positioning surfaces of the upper and lower dies of the forming mold of the existing composite material fins have zero clearance, resulting in insufficient mold clamping and too tight sealing of the mold cavity, so that the air in the product cannot be discharged, and the wings of the fins cannot be guaranteed. The geometric size of the profile and the relative position of the wing handle cause the problem of large voids or pores on the surface of the product. A fiber-reinforced resin-based composite material wing forming mold is provided.

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