| 摘要 |
PURPOSE:To enable the weight of articles filling each container and the total weight of articles in a predetermined number of containers to be approximately equalized to respective target weight values by providing correction means between weight setting means and subtraction means. CONSTITUTION:When an open gate 4 is closed, powder that has been positioned in the spaces of supply and measuring hoppers 4 and 8, respectively, is supplied to the measuring hopper 8 and a measuring signal is fed to a comparator 20 via a load cell 14 and an A/D converter 18. On the other hand, a head drop weight set to a memory 26 is subtracted (30) from a target weight set to a memory 22. A subtracted value is compared (20) with the measuring signal and, when both agree with each other, the comparator 20 feeds a supply stop signal to the gate 4. A set-weight correcting circuit 24 corrects the target weight on the basis of the cumulative value of errors generated during repeated filling operations. Further, a head drop weight correcting circuit 28 obtains the mean value of the errors which would be produced if it were not the correction by the set weight correcting circuit 24 during repeated filling operations of predetermined times and corrects a head drop weight by said mean value.
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