Kabushiki Kaisha Ishida Koki Seisakusho

Ishida Scales Mfg. Co., Ltd.

Ishida Scales Manufacturing Company, Ltd.

Yoshiharu Asai

Kazukiyo Minamida

Yoshiharu Mikami

Takashi Sashiki

Shuji Murata

Shinji Tsukamoto

A region where a load cell and a weighing hopper or a scale plate are coupled to each other is surrounded by a radio wave inhibiting member. When a weighing apparatus is used in a place subjected to extraneous radio waves of a high electric field intensity, and a high-frequency voltage is induced in the weighing hopper or the scale plate which serves as an antenna, the radio wave inhibiting member prevents a high-frequency current produced by the high-frequency voltage from flowing into the load cell. Therefore, the weighing apparatus is completely protected against any weighing errors which would otherwise result from radio interference with the load cell.

Weighing apparatus with radio interference protection

Counting method

An automatic weighing apparatus with a dispersion feed apparatus comprising a plurality of feed troughs adapted to be separately vibrated and radially arranged around the outer periphery of a dispersion table which performs spiral reciprocating vibratory motion, the feed troughs being separately vibrated at predetermined times to feed articles to associated weighing units.

Automatic weighing apparatus

Method of weighting and counting

A plurality of weighing data are combined to find a total weight combination closest to a preset value within an allowable preset range. Articles are discharged from those weighing machines which give such a total weight combination. For such a combinatorial computation, the empty weighing machines are first detected from among the weighing machines for which the combinatorial computation has been carried out, and then articles are supplied to the empty weighing machines. Weighing data from a number of weighing machines, selected from a plurality of weighing machines, are combined to allow selection of a weight combination equal or closest to the preset value. If a total weight combination given by the selected weighing machines falls within the allowable preset range, then articles are discharged from those weighing machines which give such a total weight combination during a first cycle. In a second cycle of combinatorial computation, a predetermined number or fewer weighing machines are selected from the weighing machines other than those selected for discharging articles in the first cycle, and combinatorial computation is effected on the selected weighing machines. First, it is determined whether there can be found a weight combination in the allowable preset range, and, if not, a new combination of weighing machines is selected from all weighing machines for a third combinatorial computation cycle.

Combinatorial measuring method and apparatus

Method of indicating results of combinatorial computations

Method of treating combination defectiveness in combinatorial weighing

Improvements in a weighing or counting method wherein on the basis of weight data on a plurality of groups of articles obtained from a plurality of weighing machines, the respective additive values of all possible or desired number of combinations are found, the additive value of a particular combination which is equal or the nearest to a set value is retrieved, and the weighing machines corresponding to the combination selected are actuated to discharge articles contained therein. During the discharge of articles from the weighing machines corresponding to the selected combination and during the subsequent feeding of fresh articles into the same weighing machines, similar combinatorial operation is effected on the basis of weight data from a fixed number of weighing machines which were not selected, or did not discharge their articles, and a particular combination whose additive value is equal or the nearest to the set value is determined as the combination for the next discharge.

Weighing or counting method with some unfilled hoppers

Growing community of inventors

Shiga, Japan

Yoshiharu Asai