Abstract: Actuation system for opening and closing a two-part mold that includes first and second mold parts movably mounted to each other. The actuation system includes a carriage which can move in each of two directions, a first pivoting part coupled to the first mold part, a second pivoting part coupled to the second mold part, and at least one actuating member connected to each of the carriage and at least one of the first and second pivoting parts. This abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

Abstract: The invention concerns a system for actuating a two-part mould (1) forming two half-moulds (1, 1) mutually articulated about a shaft (2) forming a hinge and driven, between an opening position and a closing position, by a translational carriage (7) driven in a reciprocating movement. The inventive system is particularly characterised in that each half-mould (1, 1) is further articulated on a part (4a, 4b) which pivots about a shaft (5a, 5b) and which is driven in rotation by at least an actuating link rod (6a, 6b) articulated through its ends respectively to said pivoting part (4a, 4b) and to said translational carriage (7).