Patent ID: 8247710
Filing Date: 2012-08-21
Classification: G01G

Abstract:
1. A combination weigher comprising: a plurality of combination hopper groups each including a plurality of combination hoppers which are fed with objects to be weighed; a plurality of upper collecting chutes which are disposed below the combination hopper groups to respectively correspond to the combination hopper groups and are configured to gather the objects to be weighed which have been discharged from the combination hoppers and to discharge the objects to be weighed from discharge outlets at bottom parts thereof; a plurality of upper collecting hoppers which are respectively provided at the discharge outlets of the plurality of upper collecting chutes to respectively correspond to the upper collecting chutes and are configured to hold the objects to be weighed which have been discharged from the discharge outlets of the upper collecting chutes respectively corresponding to the plurality of upper collecting hoppers and then to discharge the objects to be weighed; and a control means configured to repeatedly perform a combination process in which combination calculation is performed based on weights of the objects to be weighed which are held in the combination hoppers belonging to the plurality of combination hopper groups to determine one combination of the combination hoppers holding the objects to be weighed whose total weight falls within a predetermined weight range and determine the one combination as one discharge combination, a first discharge process in which the combination hoppers belonging to the one discharge combination determined in the combination process respectively discharge the objects to be weighed, and a second discharge process in which the plurality of upper collecting hoppers discharge the objects to be weighed simultaneously, to discharge the objects to be weighed which have been discharged respectively from the combination hoppers forming the one discharge combination and are held in the upper collecting hoppers corresponding to a combination hopper group to which the combination hoppers of the one discharge combination belong.