A runner removing method of removing a runner in a molding die that includes a first plate including a stripper plate, a second plate, and a third plate/ A cavity is defined between the second plate and the third plate. The method includes, after a molded article is molded in the cavity in a state where the first plate, the second plate, and the third plate are closed, separating the second third plates from the first plate in a state where the runner is attached to the first plate, inserting, between the first and second plates that are spaced apart, a guide section including a pair of wall sections, and positioning the runner between the pair of wall sections, and, in a state where the runner is positioned between the pair of wall sections, operating the stripper plate to detach the runner from the molding die.

A runner removing method of removing a runner in a molding die that includes a first plate including a stripper plate, a second plate, and a third plate/ A cavity is defined between the second plate and the third plate. The method includes, after a molded article is molded in the cavity in a state where the first plate, the second plate, and the third plate are closed, separating the second third plates from the first plate in a state where the runner is attached to the first plate, inserting, between the first and second plates that are spaced apart, a guide section including a pair of wall sections, and positioning the runner between the pair of wall sections, and, in a state where the runner is positioned between the pair of wall sections, operating the stripper plate to detach the runner from the molding die.

The mould comprises a cavity (7) into which material is injected through a casting (2); a separator (3) for opening or closing the communication between the cavity (7) and the casting (2), separating a part (1) from the casting (2) in its closed position; and a compartment (4) which is closed when the separator (3) opens the communication between the cavity (7) and the casting (2) and which is open when the separator (3) closes the cavity (7) and the casting (2), the movements of the separator (3) and the opening and closing of the compartment (4) being synchronized.

The method comprises closing the communication between the cavity (7) and the casting (2), separating the part (1) from the casting (2) and opening a compartment (4) for the material at the same time as the communication between the cavity (7) and the casting (2) is closed.

The mould comprises a cavity (7) into which material is injected through a casting (2); a separator (3) for opening or closing the communication between the cavity (7) and the casting (2), separating a part (1) from the casting (2) in its closed position; and a compartment (4) which is closed when the separator (3) opens the communication between the cavity (7) and the casting (2) and which is open when the separator (3) closes the cavity (7) and the casting (2), the movements of the separator (3) and the opening and closing of the compartment (4) being synchronized.

The method comprises closing the communication between the cavity (7) and the casting (2), separating the part (1) from the casting (2) and opening a compartment (4) for the material at the same time as the communication between the cavity (7) and the casting (2) is closed.