APPARATUS AND METHOD OF FORMING A FIBROUS WORKPIECE IN THE FORM OF A BODY OF REVOLUTION, HAVING A PROFILE VARYING IN RADIAL SECTION Russian patent published in 2021 - IPC B29B11/16 B29C53/56 B29C53/80 B29C70/32 

FIELD: moulding.

SUBSTANCE: invention relates to fibrous blanks molding by fibrous texture winding, obtained by means of three-dimensional (3D) or multilayer weaving of fibrous reinforcing structures of parts from composite material. Proposed are apparatus and method for forming fibrous workpiece. Proposed unit comprises driven roll (400). Driven roll has section in section profile, containing at least first slope (410), forming angle with axis (X₄₀₀) of driven roll, and second inclination (420) forming angle with driven roll axis different from first angle. Plant additionally comprises at least one counter-roll (20) having a shape complementary to the first and second slopes, apparatus comprises means (24, 25) for retaining each counter-roll, made with possibility to hold said counter-roll at predetermined distance from first and second slopes or with possibility to provide contact pressure of counter-roll (20) on first and second slopes. Counter-roll comprises on its surface at least one raised element corresponding to variation of cross-section of counter-roll.

EFFECT: invention provides considerable reduction of risk of creases appearance in fibrous texture during shaping by winding.

8 cl, 6 dwg