The various ingredients are added to the weighing hopper according to the set recipe sequence. The weighing device detects the change of the weight of the weighing material, and controls the discharge door of each material bin and the discharge door of the weighing hopper.

For some occasions where the gap type sequential batching work is not allowed, or where continuous work is required, the various materials can be weighed separately by continuous batching method, and simultaneously mixed into the mixture according to the set flow rate.