초록 ▼

A combination weighing machine has a plurality of weigh scales for weighing quantities of product, and the scales are selectively dumped and loaded in a cyclic operation to form a package containing a number or weight of product that closely approximates a target amount. The machine includes a plura

A combination weighing machine has a plurality of weigh scales for weighing quantities of product, and the scales are selectively dumped and loaded in a cyclic operation to form a package containing a number or weight of product that closely approximates a target amount. The machine includes a plurality of feeders and corresponding accumulators that are associated respectively with the scales for loading product into the scales after they are dumped. To ensure a more accurate feeding of product to a scale, a sensor is provided for detecting the pieces of product as they are loaded into the associated accumulator from a feeder, and the feeder is regulated in accordance with the pieces of product detected to control the duration of feeder operation.

대표청구항 ▼

A combination weighing machine having a plurality of weigh scales for weighing quantities of product, the scales being selectively dumped and loaded in a cyclic machine operation to form a package containing a number or weight of product at or closely approximating a target amount, including a plura

A combination weighing machine having a plurality of weigh scales for weighing quantities of product, the scales being selectively dumped and loaded in a cyclic machine operation to form a package containing a number or weight of product at or closely approximating a target amount, including a plurality of feeders and corresponding accumulators disposed below the feeders to receive falling product, the accumulators being associated respectively with the scales for loading the received product into the scales comprising: sensing means associated with the accumulator of a weigh scale for detecting product discharged from the associated feeder during the fall into the accumulator and producing a control signal indicative of the discharged product; and feeder control means connected in controlling relationship with the feeder to operate the feeder for an indeterminate period during a cycle of machine operation, the control means also being responsive to the control signal of the sensing means for terminating the indeterminate period of feeder operation and the discharging of product into the accumulator for preparation of a charge of product for the associated scale.