Abstract: An electrostatic separation method includes: applying voltage between a lower electrode at a bottom portion of or in the raw material layer and an upper electrode above the raw material layer, generating an electric field between electrodes; fluidizing the raw material layer and bringing conductive particles and the lower electrode into contact in the raw material layer charging only the conductive particles wherein their polarity becomes the same as the lower electrode; generating polarity, the same as the upper electrode, by dielectric polarization on a conveyor belt downward-facing conveyance surface passing through a capture region above the raw material layer and under the upper electrode, the conveyance surface including a nonconductor; separates charged conductive particles from the raw material layer surface by electrostatic force and adhering conductive particles to the conveyor belt conveyance surface; and separating and collecting the particles from the conveyance surface that moved outside the ele

Abstract: Provided is a locking/unlocking device that accurately detects an opening/closing state of an opening/closing device and optimizes timing to lock or unlock. The locking/unlocking device includes a drive unit that drives a lock mechanism of the opening/closing device, a magnetic detection unit that detects a change in a magnetic field based on a change in the relative position between a movable section and a fixed section of the opening/closing device, and a control unit that determines an open/closed state of the opening/closing device on the basis of the change in the magnetic field detected by the magnetic detection unit and activates the drive unit to lock or unlock the lock mechanism on the basis of the open/closed state.

Abstract: A robot system is provided, which includes a paint booth, and a pretreatment robot configured to perform painting pretreatment on a workpiece that is an object to be painted, the pretreatment robot being an explosion-proof robot disposed in the paint booth and including an end effector used for the painting pretreatment.

Abstract: A robot system is provided, which includes a paint booth, and a pretreatment robot configured to perform painting pretreatment on a workpiece that is an object to be painted, the pretreatment robot being an explosion-proof robot disposed in the paint booth and including an end effector used for the painting pretreatment.