Weigh-Scale Hoppers

Because precision in a weigh scale system generally increases as the weight decreases, the Weigh-hopper system uses a small, one point load cell, and a proportionately smaller hopper. Depending upon the application, the small size of the load allows the unit to achieve to within 0.5 grams, of accuracy. By filling multiple batches into a container, the system will fill large containers with the same degree of accuracy as small containers.

• A part weight and batch weight is determined using an average part weight method. The number of parts required for a full container is entered into the scale system
• A feeding conveyor fills the weigh hopper until the batch weight is reached. The conveyor stops momentarily to allow the weigh hopper to dump the batch into the container. At this point, the actual batch total is deducted from the full container total
• The system continues until the last batch is being filled - it then determines the specific count for the final batch and then fills to that number. Note: When the system nears the correct count, the feeding conveyor slows to accurately dribble in the final parts
• When the container setpoint weight is reached, the hopper dumps the last batch and zeros itself out. The hopper begins filling immediately as the next containeris indexed into position