Weighing machine for moving postal packages has short conveyer belt with end rollers on weighing platform and has entry and exit sensors noting passage of front and rear end of each passage

摘要

Each package (B1) is moved from a feed conveyer onto the short weighing conveyer (213). This consists of a conveyer belt running over end rollers mounted on a weighing table. There is an entrance sensor (11) at the start of the weighing conveyer and an exit sensor (12) at the end. The packages run off the end onto further conveyors. As the packages pass over the weighing conveyer, the recorded weight rises from zero to a maximum, remains at the maximum value for a short period, and then falls to zero again.