Patent ID: 6796364
Filing Date: 2004-09-28
Classification: B22C

Abstract:
Method of producing mould parts on a string moulding apparatus, the apparatus comprising a moulding chamber between a squeeze plate and a pivoted squeeze plate in which both the squeezes plate and the pivoted squeeze plate can move in a direction towards each other and in a direction away from one another, said method comprising the steps of:introducing a compressible particulate moulding material in the moulding chamber and squeezing the moulding material by moving the squeeze plate and the pivoted squeeze plate towards one another to form a mould part, said squeezing step including the steps of sensing a velocity of the movement of the squeeze plate and a velocity of the movement of the pivoted squeeze plate to generate signals; feeding said signals to a controller; and controlling a variable velocity of the movement of the squeeze plate and a variable velocity of the movement of the pivoted squeeze plate independent from one another during the squeezing step.