Ishida Co. Limited

Takumi Kawamura

Toshiharu Kageyama

Robert Bennett

Ryoichi Sato

Michihiko Yonetsu

Yutaka Tamai

Masaya Fujii

Masahiko Muramiya

In a combination weighing device, weight measurement devices are respectively connected to pool hoppers and weighing hoppers. When the results of a combination calculation indicate that a combination is not complete, a control unit determines whether or not a total value of a weight value from predetermined weighing hoppers and a weight value from pool hoppers that supply articles to the weight hoppers exceeds a predetermined value. Thus, an over-scale state in the weighing hoppers can be avoided by supplying additional articles stored in the pool hoppers to the weighing hoppers. The present invention provides a combination weighing device that is capable of improving operational efficiency.

Combination weighing device with multi-layered hoppers having controllable supply function

A combinational measuring device is provided with a radiation feeder transporting objects and a measuring hopper measuring the weight of each group of objects transported by the radiation feeder. As to each measuring hopper performing introduction by a prescribed frequency, an average operation part obtains an average and standard deviation of a transport quantity every group transported by the radiation feeder. On the basis of the obtained standard deviation, a parameter operation part determines whether or not the transport quantity per group transported by the radiation feeder is dispersed. The parameter operation part operates a control parameter so that the transport quantity per group transported by the radiation feeder reaches a target introduction value if the transport quantity per group transported by the radiation feeder is stable, while operating the control parameter so that the transport quantity per group transported by the radiation feeder is not in excess of a target measured value if the transport quantity per group transported by the radiation feeder is dispersed. The combinational measuring device controls driving of the radiation feeder on the basis of the obtained control parameter. Thus, it is possible to provide a combinational measuring device performing efficient measurement.

Combination weighing device

A combinational weighing device is provided with a detection part detecting a measuring state on the basis of the quantity of a object introduced into each measuring hopper and a correction part operating a target dispersed weight defining the reference for control on a cross feeder by a supply control part. The correction part corrects the target dispersed weight in response to the measuring state of the combinational weighing device detected by the detection part. In other words, the correction part controls the quantity of the object supplied to a dispersion feeder on the basis of measured data indicating an actually measured value. Thus provided is a combinational weighing device performing efficient measurement without complicating the device structure.

Combinational weighing device

An article handling system and method comprising a flow path along which articles travel and a metal detection system to detect the passage of metal items along the flow path. The system has a metal detector test system to support a metal test piece and positively move it along the flow path, and a metal detector to detect the metal test piece.

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Shiga, Japan

Takumi Kawamura