RTM INJECTION METHOD AND MOULD USING SYMMETRIC ANTI-PINCHING SECTORS

• Main Authors: JENSEN, Brian, JAUSSAUD, Raoul, FABRE, Hubert, Jean, Marie
• Format: Patent
• Language: English; French; German
• Published: 12.04.2023
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STEAM ENGINES; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Disclosed is an injection mould (100) for manufacturing a revolving part (10) made of composite material, comprising a mandrel (110) supporting a fibrous preform (20) and comprising an annular wall (111), and a plurality of angular counter-mould sectors (120) assembled on the mandrel and intended to close the mould and to compact the fibrous preform (20) wound on the mandrel. Each angular sector (120) comprises an annular base (121) intended to come into contact with the fibrous preform. The annular base extends between first and second lateral edges (124, 125) in a circumferential direction (De), the first lateral edge (124) of the annular base (121) of an angular sector (120) being in contact with a second lateral edge (125) of the annular base (121) of an adjacent angular sector. The plurality of angular sectors comprises a first series of angular sectors (120) and a second series of angular sectors (160), the first and second lateral edges (124, 125) of each angular sector of the first series of sectors (120) each comprising a protruding lower portion (1240, 1250) forming a first non-zero angle (β1240, β1250) with respect to a radial direction (DR), the first and second lateral edges (164, 165) of each angular sector of the second series of sectors (160) each comprising a recessed lower portion (1640, 1650) forming a second non-zero angle (β1640, β1650) with respect to a radial direction (DR), the first angle (β1240, β1250) and the second angle (β1640, β1650) having the same value.