GB1223382A - Casting apparatus - Google Patents

Abstract

1,223,382. Die casting machines. GERITY-SCHULTZ CORP. 26 Feb., 1969 [19 April, 1968], No. 10204/69. Heading B3F. In a die-casting machine comprising a pair of vertically moving co-operating dies 40, 60, the casting 116 is held on a transfer pin 80, the transfer pin 80 being rotatable about an axis normal to the direction of movement of the dies. The casting machine has four stations (Fig. 5), A the injection station, B the cooling station, C the trimming station and D the transfer pinstripping station. Melt is introduced into the multicavitied dies 40, 60 by a "hot-chamber" gooseneck injector (46) depending into a furnace 14. The gooseneck is movable on packs 100, 102 (see Fig. 5) to facilitate replacement of the injection nozzle (not shown). The upper die 60 is fixed to a movable platen 20 and clamped during casting by toggle linkages 26, 28, 30, 32. The metal is cast about one of four transfer pins 80 mounted on a rotatable double turntable 70, 77. After solidification of the melt the upper die 60 moves upwards with the simultaneous operation of ejector rods (not shown) therein. The upper turntable 70 also moves upwards and rotates clockwise through 90 degrees to bring the hot casting 116 beneath a cooling booth 12 where it is sprayed with an atomized coolant. During the turntable rotation, the transfer pin rotates through 180 degrees. The casting is then rotated through 90 degrees on the turntable and 180 degrees about a horizontal axis to the trimming station where it is pressed between dies 116 and 118 to remove the flash, and the finished articles are ejected from the machine. A further 90 degrees turntable rotation brings the transfer pin 80 beneath a stripping station where the runners and gates are removed.