US 12,343,790 B2
Assembly for producing a molding made of removable material of a turbomachine
Hervé Bruno Marc Osmont, Moissy-Cramayel (FR); Ramzi Bohli, Moissy-Cramayel (FR); Alexis Lourette, Moissy-Cramayel (FR); and Joseph Toussaint Tami Lizuzu, Moissy-Cramayel (FR)
Assigned to SAFRAN, Paris (FR); and SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 18/728,789
Filed by SAFRAN, Paris (FR); and SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Jan. 13, 2023, PCT No. PCT/FR2023/050048
§ 371(c)(1), (2) Date Jul. 12, 2024,
PCT Pub. No. WO2023/135395, PCT Pub. Date Jul. 20, 2023.
Claims priority of application No. 2200251 (FR), filed on Jan. 13, 2022.
Prior Publication US 2025/0083221 A1, Mar. 13, 2025
Int. Cl. B22D 17/24 (2006.01); B22D 25/02 (2006.01)
CPC B22D 17/24 (2013.01) [B22D 25/02 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An assembly for producing a molding, made of removable material, of a turbomachine blade, comprising an injection mold for said removable material in which a first core element and a second core element are configured to be mounted in a predetermined molding position, the first and second core elements extending in a first direction, the mold comprising:
a first molding face configured to mold a pressure-side face of the blade and a second molding face configured to mold a suction-side face of the blade and arranged facing the first face in a second direction perpendicular to the first direction, and
retaining members configured to hold the cores in position in the injection mold,
wherein at least a first retaining member extends from the first face of the mold in the second direction and extends at least partially through the first and second core elements, the first retaining member comprising a first support point at which the first retaining member bears against the first core element and a second support point at which the first retaining member bears against the second core element.
 
9. A method for producing a molding, made of removable material, of a turbomachine blade, the method comprising:
providing a first core element and a second core element, said core elements extending in a first direction; and
providing an injection mold for said removable material,
wherein the mold comprises:
a first molding face configured to mold a pressure-side face of the blade and a second molding face configured to mold a suction-side face of the blade and arranged facing the first face in a second direction perpendicular to the first direction; and
retaining members configured to hold the cores in position in the injection mold, among which at least a first retaining member extends from the first molding face in the second direction,
the method further comprising the step of positioning the first core element and the second core element on the first molding face such that the first retaining member extends at least partially through the first and second core elements and comprises a first support point at which the first retaining member bears against the first core element and a second support point at which the first retaining member bears against the second core element.