Injection-mould esp. split-follower mould - has ejector unit centred via back-pressure pins with centring section along parting line plane

摘要

Injection-mould has 2 movable half-moulds which fit together by means of guide bolts in the one and guide sleeves in the other, each half-mould being composed of adjacent and centred mould elements. There are 2 split followers associated with a mould element designed as a mould plate which are displaceable in lateral slides opposite a common parting line. An ejector unit is associated with one of the half moulds. It is centred via back pressure pins some of which have a centring section extending along the plane of the parting line of the split-followers. This centring section bears at least along part of its length, upon counter-centring recesses when the mould is closed. These recesses form part of the split followers and extend least over part of the height of the same.