METHOD AND DEVICE FOR MANUFACTURE OF LAMINATED ARTICLES OF COMPOSITE MATERIALS WITH MOULDING-ON OF REINFORCING MEMBERS Russian patent published in 2002 - IPC

FIELD: process of moulding of laminated articles made of composite materials, applicable in manufacture of configurated long-sized articles by winding of composite materials, in particular, helicopter blade spars. SUBSTANCE: method consists in winding of an envelope on a processing mandrel on part of the blank thickness, partial hardening of it, winding of the blank to the whole thickness is carried out in layers with a periodical moulding-on of reinforcing members in the points of reinforcement of the article profile and heating of the reinforcing member to the softening temperature of the layer wound under it, but below the temperature of complete hardening of the blank, winding of layers, partial hardening of them, pressure test and complete hardening of the blank and removal of the mandrel. Moulding-on of reinforcing members is accomplished by a mould with a working profile varying with variation of the blank appearance. The device for moulding-on of reinforcing members has a frame, process mandrel, carriages for horizontal guides for reciprocating motion of the mould across the mandrel. Each half-mould of the mould is kinematically linked with the power drive, the half-moulds are made for changing the geometry of the working surface. The frame is installed on the means of horizontal motion along the process mandrel with fixation with the aid of stops, whose quantity corresponds to the number of the reinforcing members to be moulded on. The half-moulds have heating devices. The machine for manufacture of laminated articles of composite materials with moulding-on of the reinforcing members has a bed frame that carries the supporting stocks for fastening of the process mandrel. The bed frame guides bear a carriage with a winding device and a device for moulding-on of reinforcing members on the blank, drives and transducers of change-over of movements on the machine guides and fixation in the preset position relative to the mandrel. EFFECT: enhanced quality of reinforced laminated articles of composite materials, for example, of blade spars of helicopter propellers, enhanced bending strength of the article. 11 cl, 10 dwg