公开(公告)号：US20210102833A1

公开(公告)日：2021-04-08

申请号：US17064322

申请日：2020-10-06

Applicant: Ishida Co., Ltd.

Inventor： Yoshifumi YAOI

IPC: G01G13/16

Abstract: [Problem] To provide a combination weighing apparatus that reduces power consumption during opening and closing operations of a hopper gate.
[Solution] In a combination weighing apparatus 1, a control unit 70 controls a stepping motor 60 via a control signal that is input to the stepping motor 60. The control signal that is input to the stepping motor 60 is a voltage value corresponding to a desired current value. The control unit changes the control signal to the stepping motor 60 in conjunction with a change in the settings of the opening and closing speed of the gate 20. As a result, it becomes possible to supply power needed for the operation of the gate 20, and power can be saved.