Abstract: A powdery-material feeding device includes a controller configured to selectively conduct constantly keeping-control of constantly keeping rotational speed of a motor, current or voltage applied to the motor without any change as a manipulated variable for a predetermined period, or feedback-control of repetitively obtaining a difference between a discharge flow rate of the powdery material and a target value thereof at predetermined cycles and adjusting by increasing or decreasing the manipulated variable at each of the predetermined cycles in order to reduce the difference, the controller conducts the constantly keeping-control immediately after a motor starts, shifts to the feedback-control when the difference between the discharge flow rate of the powdery material and the target value thereof has an absolute value less than a threshold after the period for the constantly keeping-control elapses, and conducts constantly keeping-control without shifting to the feedback-control when the absolute value of the

Abstract: A powdery-material mixing and feeding system is configured to feed a machine configured to execute a post process with mixed-powdery materials obtained by mixing a first powdery material and a second powdery material discharged from powdery-material feeding devices at a required ratio, wherein when a flow rate of the first powdery material discharged from the first powdery-material feeding device departs from a target value by a predetermined amount or more, a controller increases or decreases the flow rate of the second powdery material discharged from the second powdery-material feeding device such that the ratio of the first powdery material to the second powdery material contained in the mixed-powdery materials is kept within a desired range.

Abstract: A powdery-material measurement device includes a sensor probe configured to receive reflected light from mixed-powdery materials passing adjacent thereto or transmitted light through the mixed-powdery materials to measure characteristics of the mixed-powdery materials while the powdery-material measurement device is in operation to deliver the mixed-powdery materials toward an equipment, and a standard sample having known characteristics and facing the sensor probe that is disposed to receive the reflected light from the standard sample or the transmitted light through the standard sample, when the mixed-powdery materials are not present adjacent the sensor probe while the powdery-material measurement device is in operation to deliver the mixed-powdery materials toward the equipment.

Abstract: A powdery-material mixing degree measurement device includes a supplier configured to be fed with a mixed-powdery materials, a discharger configured to discharge to feed, with the mixed-powdery materials, a filling device configured to fill a die bore of the compression-molding machine with a powdery material, a rotator including a plurality of movable portions and configured to capture the mixed-powdery materials fed through the supplier and to transfer the mixed-powdery materials to the discharger a first sensor configured to measure a mixing degree of the mixed-powdery materials captured by the movable portions of the rotator, a second sensor configured to detect whether or not the mixed-powdery materials in the supplier have an upper surface level kept within a constant target range, and a controller configured to adjust rotational speed of the rotator such that the upper surface level of the mixed-powdery materials in the supplier is kept within the constant target range.

Abstract: A processing system includes a powdery-material feeding device including at least one feeder configured to discharge a reserved powdery material, and an equipment including a filling device configured to be fed with the powdery material discharged from the feeder and configured to execute a post process using the powdery material filled by the filling device, in which upon a start of the equipment having stopped filling with the powdery material by the filling device and executing the post process, when the feeder supplies the filling device with the predetermined amount of the powdery material before the start of the equipment being stopped, the processing system executes tuning of measuring a relation between control input provided to a motor of the feeder and a flow rate of the powdery material discharged from the feeder.