To exactly align movable and fixed cavity members by an operation to put a screw in/out unidirectionally.

In the recess 6b of a fixed template 6 positioned at the end surface on the fixed side L, by regulation means 20X, 20X and 20Y, 20Y each constituted of a driving member 21 and a driven member 22, the fixed cavity member 7 is set movably by a prescribed quantity in the XY biaxial direction crossing rectangularly with the axis C. When a driving bolt 24 is put in/out in relation to the fixed template 6, the driving member 21 is pushed/moved, and the fixed cavity member 7 is moved with the driven member 22 perpendicularly to the axis C.