METHOD FOR DETERMINING POWDER AMOUNT, METHOD FOR CONTROLLING POWDER SPRAYING AMOUNT, APPARATUS FOR DETERMINING POWDER AMOUNT, AND POWDER COATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a method for determining a powder amount capable of providing highly reliable results at a cost as low as possible, a method for controlling the powder spraying amount, an apparatus for determining a powder amount, and a powder coating apparatus. SOLUTION: The method is suitable for measuring the powder amount in a container (that is, a powder amount to be supplied from the container) and measuring fluctuation of the powder amount. The powder is fluidized in the container and the pressure of the fluidized powder is measured to determine the pressure of the fluidized powder or the pressure fluctuation between those measured at two times. In this case, the powder amount in the container or the powder amount supplied from the container between two time measurements is measured based on the pressure or the pressure difference. The invention makes it possible to measure the powder amount supplied from the container to be sprayed by a coating apparatus by such a simple pressure measurement method and based on the measurement, the flow rate of the supplied powder weight.