PROCESS FOR MOLDING THE PLASTIC BODY OF AN AIR INTAKE COLLECTOR FOR INTERNAL COMBUSTION ENGINE

摘要

Process for molding in a single piece the body (1) of an intake collector which comprises a plenum (2) comprising an intake orifice (3) and into which opens by a distribution orifice (6) a series of intake conduits (5) equipped with a flared segment (8) surrounding the associated distribution orifice (6), characterized by the following implementation steps: - a mold (10) is made which has an inner surface corresponding to the outer surface of the collector body (1) and also openings, - into an opening in the mold (10) is inserted a mold core (20), constituted of a first core element (21) corresponding to a first portion of the periphery of the plenum (2), and a second core element corresponding to the remaining portion of the periphery of the plenum (2) and also to the flared segments (8) of the intake conduits (5), and comprising flared end pieces (23) projecting from the periphery thereof, - the collector body (1) is molded, - the first core element (21) is extracted by sliding it along the second core element (22), - the second core element (22) is moved transversely to release the flared end pieces (23), and then it is extracted longitudinally, and - the collector body (1) is unmolded.