Multiple hopper weighing and transfer system

Abstract

The first of the in-series hoppers of the system is carried by a scale to determine the weight of the product batch; a transfer hopper being next in line and finally a holding hopper. A computer senses the batch weight and assigns the weight in sequence first to the transfer hopper, and then to the holding hopper. Both the transfer and holding hoppers participate in each computerized weighing/selection cycle. The forming/weighing hopper includes a shell and double-acting clam shell doors; the upper curved portion of each door extending into the hopper when the doors are open, thereby intercepting any late product in flight and initiating formation of the next batch. The transfer and holding hoppers also incorporate pairs of clam shell type doors. The associated method, is characterized by forming and weighing the product in the first in-series hopper and then discharging the batch in sequence to the transfer and holding hoppers. These steps are repeated in succession, and checking of all hoppers by the computer is provided to generate an extended multiple shift mode of operation. In addition, there is a step of intercepting the product within the forming/weighing hopper to initiate forming of the next batch for further extension. A related method contemplates replacing large capacity in-series hoppers for the relatively small capacity hoppers, and vice-versa.