| 摘要 |
PURPOSE:To uniform the life of an opening/closing mechanism for metering hoppers used for combinational arithmetic and to improve the durability by varying the selection order of data of metering hoppers properly by a preset numeral. CONSTITUTION:A body to be metered is supplied onto a dispersion plate 1 and conveyed on the dispersion plate 1 by a feeder 3 to be dispersed. The feeder 4 of each supply trough 2 stops while the body to be measured is present in the pool hopper 10 and is driven when the hopper 10 is emptied to supply the body to be measured from the dispersion plate 1 to the hopper 10. The hopper 10 reserves the body to be metered and opens its bottom lid when the metering hopper 5 is emptied to fall the body to be metered. Only hoppers 5 which are selected as combinational weight are opened to obtain a specific weight combination. For example, a sequence of random numbers, etc., with uniform frequencies of appearance is set previously and the selection order is controlled on the basis of the sequence. |
