Process for the production of a profile made of composite material fibers that has a half-nail-head or nail-head cross-section

摘要

A process for the production of a fiber profile (32) that is designed to fill in a space with a nail-head-shaped or half-nail-head-shaped cross-section that originates from the assembly of preforms in a T shape, of which at least one includes a curvature radius at the junction zone of the preforms, includes: supplying powder-coated fibers (28) to a preforming station (30) where the powder is activated and the fibers (28) move into a passage whose shapes are adapted to those of the desired profile, and then making the preformed fibers move into a shaping station (34) where the fiber profile (32) is cooled and shaped by circulating in a cavity whose shapes are adapted to those of the desired profile.

主权项

1. Device for production of a fiber profile (32) that fills a first space (14, 26) that has a nail-head-shaped or half-nail-head-shaped cross-section that originates from an assembly of preforms (10, 12, 12′, 20, 22, 24) in a T shape, of which at least one comprises a curvature radius at a junction zone of said preforms, the device comprising:
powder-coated fiber supply means (28); a preforming station (30) where said powder is activated and where fibers from said fiber supply means (28) move into a passage (62) with a cross-section that corresponds to the cross-section of said first space; and a shaping station (34) where said fibers from said passage are cooled and shaped by circulating in a cavity (66) with a cross-section that corresponds to the cross-section of said first space to form said fiber profile, wherein the preforming station (30) comprises two rollers (58, 58′) whose axes of rotation are arranged perpendicular to the direction of advance of the fibers and so that their peripheral surfaces are tangent, wherein at least one of the two rollers (58, 58′) comprises a groove (60) that delimits the passage (62) at its peripheral surface.