Patent ID: 8215948
Filing Date: 2012-07-10
Classification: B29C,Y10S

Abstract:
1. A moulding device for the production of containers by blow moulding or stretch-blow moulding from preforms made from a heated thermoplastic material, said device comprising at least one mould comprising at least two half moulds and driving means capable of displacing said half moulds between an open position in which said half moulds are separated from each other and a closed position in which said half moulds are tightly pressed against each other by respective mating faces defining a joint plane and in which said half moulds define a mould cavity, said two half moulds being hinged to each other in rotation about a hinge axis contained in said joint plane and perpendicular to an axis of said mould cavity, said hinge axis being below said two half moulds, means of locking said two half moulds in said closed position also being provided, each half mould having an outer surface zone capable of abutting against an inner surface zone of said means of locking said two half moulds in said closed position, said outer surface zone of each half mould having a shape complementary to said inner surface zone of said locking means, such that, when said two surface zones are placed in contact against each other, the generation of two forces results therefrom, directed in opposing directions radially inwards on said two half moulds, and said locking means having the form of a collar capable of encircling said two half moulds in a closed position, wherein said driving means comprise a moving assembly capable of displacement in a direction substantially parallel to said axis of said mould cavity and cooperating with said two half moulds so that, when said moving assembly is in the lower position, said two half moulds are in an open position, and that when said moving assembly is in the upper position, said two half moulds are in a closed position and in that said collar belongs to said means of driving said two half moulds; the moulding device further comprising a mould base, wherein said mould base is axially moveable and is coupled using securing means to one of said two half moulds.