Method for manufacturing a grid made of a composite material

A method for manufacturing a grid made of composite material for straightening an air flow for an aircraft turbomachine, this method comprising the following steps:

• a) positioning, in a thermocompression device, spars extending longitudinally in a first direction, said spars being made of a first material comprising fibres extending parallel to the first direction, these spars comprising lateral faces comprising recesses;
• b) positioning, in the thermocompression device, between the lateral faces of the spars and outside the recesses, connecting elements, made of a second thermo-compressible material;
• and,
• c) subjecting, by the thermocompression device, the spars and the connecting elements to a determined temperature and a determined pressure, adapted to cause a portion of the connecting elements to penetrate said recesses so as to ensure a mechanical anchoring of the connecting elements in said recesses of the spars,
• the thermocompression device comprising at least one of a compression means, a moulding means and an injection means adapted to form hollow cells, delimited by the spars and the connecting elements, at the end of the step c), and
• during the steps b) and c) the second thermo-compressible material of the connecting elements, made of discontinuous fibres, is contained in a tooling cavity and pushed out of the cavity by a piston, so as to cause a portion of the connecting elements to penetrate into the recesses and create a mechanical anchoring of the connecting elements to the spars.