Patent ID: 6739569
Filing Date: 2004-05-25
Classification: B29C,B29D,Y10S,Y10T

Abstract:
A moulding tool for the manufacture of precision articles, comprising:(a) a number of pairs of shape-determining tool inserts having contact surfaces, (b) a first tool half having a first tool holder and a second tool half having a second tool holder, wherein each of the first and second tool holders contains a number, corresponding to the number of pairs of shape-determining tool inserts, of continuous recesses which are aligned in pairs with corresponding recesses in the other tool holder when the moulding tool is closed, wherein one of each pair of tool inserts is clamped into one of the recesses in the first tool holder while the other of each pair of tool inserts is clamped into one of the recesses in the second tool holder, (c) positioning means, by means of which the tool holders when the moulding tool is closed are positioned relative to one another in such a way that each of a pair of shape-determining tool inserts is opposite the other and interacts with the other to form a mould cavity, and (d) clamping means, which are associated with one of the recesses in the tool holders and with one of the tool inserts, which contain one or more spring-action clamping elements, which have first and second contact surfaces and are of such a dimension that when the tool insert to be clamped is in the clamped position, the clamping means are clamped and the first contact surfaces of the clamping means adjoin the wall of the recess and the second contact surfaces of the clamping means adjoin the tool insert, wherein the shape of the second contact surfaces of the clamping means is complementary to the shape of the contact surfaces of the tool inserts to be clamped,and wherein the second contact surfaces of the clamping means inserted in two aligned recesses of the tool holders are in alignment with one another.