Casting mould for the production of muffles

摘要

The invention relates to a casting mould for the production of muffles, which are used for the conversion of wax models into metal, the casting mould having a funnel former (1), which comprises a disc-shaped base plate (4), running around the circumference of which is a side wall perpendicular to the base plate, and a cone (6) arranged in the centre of the base plate (4), and further having a tubular muffle ring (2) which is inserted partially into the funnel former (1), the outer wall of the muffle ring (2) resting against the inner circumference of the side wall (5) of the funnel former (1), a cylindrical ring (7), which is inserted at that end of the muffle ring (2) which faces the funnel former (1) and the central opening (8) of which surrounds the cone (6), and a blind funnel (3), which is provided at that end of the muffle ring (2) which lies opposite the funnel former (1) and the tip of which points towards the cone (6) of the funnel former (1). According to the invention, the blind funnel (3) can be positioned and fixed freely in the imaginary end face of the tubular muffle ring (2). This further increases the accuracy of the cast object. <IMAGE>