| 摘要 |
PURPOSE:To improve combination accuracy, by forcibly discharging a material to be measured in hoppers based on the conditions corresponding to the state where measuring hoppers are not combined and selected, and forcibly discharging the measuring hoppers, which are hard to be combined and selected. CONSTITUTION:When hoppers 1''... are combined and selected, corresponding counters 10, which are counted up every time combination and selection are not performed, are cleared. The hoppers 1'', which are not selected, are detected by a control device 7 for every combination or for every number of times of combinations. When the maximum and minimum measured values in a memory part 7b are not selected, the hoppers 1'' corresponding to both or either of the values are forcibly discharged through a judging part 7a which responds to the discharge condition. When either of the values is selected, the hoppers corresponding to the other value are forcibly discharged. When both values are selected, the materials to be measured in the hoppers, whose continuous number of unselected times is many, are sequentially discharged forcibly in that order. The measuring hoppers, which are hard to be combined and selected, are forcibly discharged. Thus the probability of selection of each hopper becomes high and the combination accuracy is improved. |
