Mould carrier with toggle opening for moulding eva

摘要

The invention is a new mould carrier for moulding EVA technical items, comprising a base (B) that carries the lower half-moulds (Si), guide columns (C), an upper crosspiece (T) and a plane (P) that carries the upper half-moulds (Ss) and slides on the guide columns (C). The mould carrier is provided with two pairs of connecting elements (Lb1,Lb2) hinged to each other and also to the upper crosspiece (T) and the sliding plane (P); the total length of the first pair of connecting elements (Lb1) is equal to the distance between the upper crosspiece (T) and the sliding plane (P) with closed moulds, while the total length of the second pair of connecting elements (Lb2) is suitably longer than the distance between the upper crosspiece (T) and the sliding plane (P) and consequently said second pair of connecting elements (Lb2) is always positioned angularly with respect to the first pair of connecting elements (Lb1). A piston (Lp) hinged to the common hinge point of the second pair of connecting elements (Lb2) acts on the common hinge point of the first pair of connecting elements (Lb1) to obtain the translation of the sliding plane (P).