Displaceable punch mechanism

摘要

Injection mould assembly provided with a punch mechanism (8) protruding into the cavity (4) delimited between the mould halves. This punch mechanism (8) serves to make an opening in the object to be moulded and also to secure the object after punching and prior to removal from the mould. It is proposed to vary that part of the object which is supported by the punch mechanism (8), i.e. the extent to which the punch mechanism (8) protrudes into the cavity (4), as a function of the operating conditions.