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1. (WO2018046826) INSTALLATION AND METHOD FOR FORMING A REVOLVING FIBROUS PREFORM EXHIBITING, IN RADIAL SECTION, A PROFILE THAT EVOLVES

Pub. No.:    WO/2018/046826    International Application No.:    PCT/FR2017/052333
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Tue Sep 05 01:59:59 CEST 2017
IPC: B29C 70/32
B29C 53/56
B29C 53/80
B29B 11/16
B29L 31/00
Applicants: SAFRAN AIRCRAFT ENGINES
Inventors: FABRE, Hubert Jean Marie
HELLOT, Jérémy
Title: INSTALLATION AND METHOD FOR FORMING A REVOLVING FIBROUS PREFORM EXHIBITING, IN RADIAL SECTION, A PROFILE THAT EVOLVES
Abstract:
The invention concerns an installation and a method for shaping a fibrous preform. The installation comprises a follower roller (400). The follower roller has, in cross section, a profile comprising at least one first slope (410) forming an angle with the axis (X400) of the follower roller and a slope, a second slope (420) forming a second angle with the axis of the follower roller different to the first angle. The installation further comprises at least one counter-roller (20), the shape of which matches the first and second slopes, the installation comprising means (24, 25) for holding each counter-roller configured to hold said counter-roller at a predefined distance from the first and second slopes or configured to apply a contact pressure of the counter-roller (20) onto the first and second slopes. The counter-roller has at least one protrusion (411) corresponding to a variation in the cross section of the counter-roller.