JPS6478654A - Full mold molding method - Google Patents

Abstract

PURPOSE:To prevent deformation and breakage of a lost-wax pattern by sharing the supplying of molding sand into a flask setting the lost-wax pattern at the time of making the mold by burying the lost wax pattern into the molding sand and vibrating the flask at every supplying time. CONSTITUTION:After setting the lost foam pattern 6 in the flask 2 on a table 1 for vibration under condition of holding the upper end part thereof by a supporting arm 7, the supplying chute 4 is opened by operating a controlling means 5, a first time of supplying of the molding sand 8 into the flask 2 is executed. After completing this, by operating the controlling means 5, closing of the chute 4 and working of a motor 3 for vibration are executed in order and also after passing the prescribed time, stopping of the motor 3 is executed and the molding to a first supplying layer of the sand 8 is executed. After this operation completes, the supplying of the sand 8 and the molding on and after second time as shown by virtual line are repeated in order in the same way as mentioned hereinabove.