Abstract: An application head specially designed to produce parts made of composite materials, comprising an application system, guiding means defining a guiding plane, a cutting system for cutting a fiber, the cutting system comprising a first blade movable in translation along a cutting direction and provided with a bevel defining a first cutting edge and a second blade movable in translation along the cutting direction and provided with a bevel defining a second cutting edge, the bevels being opposed to allow an overlapping of the cutting edges.

Abstract: A fiber application head for the production of composite material parts, including a compacting roller having a rigid central tube, at least one cylindrical piece made of an elastically deformable flexible material, assembled on the central tube and a plurality of independent rigid rings stacked side by side on the cylindrical piece. Each cylindrical piece includes a cylindrical outer surface by which each ring is intended to come to bear against the lay-up surface, and two collars mounted on the central tube, on either side of the cylindrical piece, being able to block in translation the stack of rings on the cylindrical piece.

Abstract: A fiber application head comprising a compaction system including a plurality of independent compaction rollers and compaction cylinders and, for each fiber, cutting means and rerouting means. For each fiber, the head comprises a functional module including the cutting means and the rerouting means, each functional module is mounted so as to be movable in translation on a support element of the head. Each compaction roller is mounted on one or more adjacent functional modules. A compaction cylinder is associated with the functional module(s) associated with a compaction roller for the displacement in translation of the functional module(s). An independent heating system is associated with each compaction roller, and able to displace with the functional module(s) associated with a compaction roller.

Abstract: A method for producing a composite material. The method includes the steps of producing an initial dry preform, formed from unidirectional continuous dry fibers, applying non-woven filaments to a first main face of the dry preform, and needling the filaments with a needling device. The needling device includes a plurality of needles, each provided with at least one notch, so that filaments are driven by the needles and arranged in a direction substantially perpendicular to the continuous fibers of the dry perform. The method includes the further step of impregnating the dry preform with an impregnation polymer, the impregnation polymer constituting the matrix of the composite material part.

Abstract: A fibre application head for producing composite material parts, comprising a compacting system comprising a compacting roller for applying one or more fibres onto an application surface, and a heating system capable of emitting thermal radiation towards the fibre or fibres. The head further comprises a blowing system comprising an air blowing nozzle, the nozzle being arranged upstream from the roller, with respect to the movement direction, and being capable of forming an air knife, parallel to the axis of the roller, towards the nip zone between the compacting roller and the layup surface.

Abstract: A fiber application head for producing composite material parts, comprising a compacting system comprising a compacting roller comprising a rigid central tube and at least one cylindrical part made of a flexible material and assembled on said central tube, and an anti-adherent sheath covering the cylindrical part, and a heating system that is able to emit thermal radiation in the direction of the (s). The anti-adherent sheath has lateral portions extending beyond the cylindrical surface of the cylindrical part in the direction of the rotation axis of the roller, the assembly of the anti-adherent sheath to said cylindrical part being carried out by the lateral portions.

Abstract: A method for producing preforms, by layup of fibers on a layup surface, comprising the application of a binder on at least one continuous flat dry fiber, comprising two opposite main faces, and the layup of the fiber provided with binder by means of a layup head in order to form a preform. The application of binder on a fiber is carried out by means of at least one fiberizing nozzle comprising a discharge orifice supplied with liquid or pasty binder, and one or several injection orifices supplied with pressurized gas, in such a way that said nozzle is able to deliver the binder in the form of a spiral filament, the spirals of filament being deposited on a first main face of the fiber running underneath the nozzle in order to obtain a fiber provided with filaments of binder.

Abstract: The invention relates to a fiber application head for manufacturing composite material pars and to a corresponding manufacturing method, said head including: an application roll for applying a band formed of one or more fibers onto an application surface; a main guide system for guiding at least one fiber towards said application roll; a heating, system capable of emitting thermal radiation towards the band just before application by the application roll; a cooling system capable of cooling, the application roil from the outside, such as a gas flow; and a drive system capable of rotating the application roll when the roll is not in contact with the application surface.

Abstract: A fiber application machine comprising a fiber application head, a displacing system to displace said fiber application head, fiber storage, and a fiber conveyor to convey the fibers from the fiber storage to the application head. The machine further comprises a safety system comprising at least one perimeter barrier defining a safety zone wherein the displacing system carrying the application head is placed, the fiber storage being arranged outside of said safety zone.