Molding device for the manufacture of composite components using liquid polymer resin

A molding device (1) for the manufacture of structured or semistructured composite components comprising a polymer resin (50) and a fibrous substrate (51), wherein said molding device comprises:

• a mold (2) comprising a bottom and a lateral surface,
• a movable part (10) able to move along the lateral surface of the mold, comprising a compression surface (14) forming a cavity (7) with the bottom and lateral surface (5) of said mold (2), wherein the movable part (10) further comprises a punch (11) able to move along the lateral surface of the mold, and an injection head (20), said injection head being provided with a wall (21) defining an injection column (22) communicating with the cavity (7) by an opening (26),
• wherein the movable part (10) comprises a vacuum-drawing channel 13 or 23) opening into a chamber (42 or 25) located above the cavity and communicating with said cavity (7), said cavity (7) being formed by the compression surface (14), the lateral surface (5), and the bottom of the mold (2), wherein the vacuum-drawing channel (23) consists of a first channel that passes through the wall of the injection head (20), and opens into the chamber (25) consisting of the lower portion (25) of injection column (22), and wherein the vacuum-drawing channel (23) is also a channel for injecting polymer resin (50).