Mould for the injection-moulding a component comprising two portions which are composed of different materials

A mould (2) for injection-moulding a component comprising at least a first portion and a second portion which are contiguous, are from a moulding operation and are composed of different materials, of the type comprising a moulding cavity (10), and at least one panel (16, 18, 20, 54, 56) for separating the cavity into at least two compartments (24, 26) for moulding the first and second portions, the panel being movable between an active position, in which the panel (16, 18, 20, 54, 56) extends in the cavity (10) in order to separate the two compartments (24, 26), and a rest position, in which the panel (16, 18, 20, 54, 56) is withdrawn from the cavity (10) in order to join together the two compartments (24, 26), the panel (16, 18, 20, 54, 56) moving between the active position and the rest position through an opening (22) which is provided in a wall (12) of the cavity (10), characterised in that it further comprises at least one shutter (32, 34) which is movable between an open position, in which the shutter (32, 34) is disengaged from the opening (22) in order to allow the panel (16, 18, 20, 54, 56) to be moved into an active position, and a closed position, in which the shutter (32, 34) closes at least a region of the opening (22) in order to close the cavity (10) when the panel (16, 18, 20, 54, 56) is in a rest position.