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Manually shoveling sand to fill cope and drag boxes (casting flask) for sand casting is a physically demanding process for mold makers. Mold makers shovel on average, 20 tn/day of casting sand weighing 100 lb/cu ft into an average of 70-80 molds per day. This demanding operating condition creates a high-level of physical strain on the mold maker’s body. To automate this process and improve operating conditions, Hapman designed and manufactured a single strand top carry drag chain conveyor with integral hopper. The redesigned mold filling process begins as prepared moist foundry sand is introduced into the hopper by a small skid steer loader. The dense material is screened as it enters the hopper to eliminate aluminum tramp metals or larger pieces from entering the process. The hopper features an electro-polished stainless steel finish, a pin style agitator, and a vibrator to keep material from bridging and to provide consistent material flow into the conveyor. The drag chain moves the sand in a consistent, metered flow to the discharge point where the mold maker controls the filling of the casting flask. Hapman, Kalamazoo, MI 269-343-1675 www.hapman.com
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