Process for step-by-step moulding of an elongate part having lateral projections and mould for its implementation

摘要

The mould comprises two shells 1 and 2 which make it possible to mould a first screw section 13 limited by a closing-off member 10 placed in a recess 8 of the cavity of this mould. After extracting this closing-off member, the part 13 is shifted towards the left so that it no longer occupies, for example, only a single thread of the mould such that, over the first screw, a second one having a smaller number of threads is overmoulded, and so on and so forth. Production of elongate parts having lateral projections. IMAGE