| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder supply amount measuring method which can precisely measure the supply amount even during a period of time when powder is charged, wherein the structure for measuring the supply amount is simple and can be manufactured at a low cost. SOLUTION: An impeller type supply disk 4 is rotatably provided on a receiving disk 3 of a cylindrical body 2 by a rotary shaft 6, and a top plate 7 having an inlet port 7a is provided above the supply disk so that a space in the cylindrical body 2 above the top plate is made into a storage chamber 8. A space encompassed by vanes 4a of the supply disk 4, the receiving disk 3, and the top plate 7 is made into a measure space 5. A discharge port 18 is provided on the side of the receiving disk 3 opposite to the inlet port. An opening part 10 having the same shape and the same dimension as the bottom surface of the measure space 5 is provided on the way of a forward route of the vanes between the discharge port and the inlet port 7a. A diaphragm 11 is stretched over the opening part 10. A load cell 12 for measuring the weight of the powder on the diaphragm 11 is provided. The time when the measure space 5 is right above the diaphragm is sensed by a sensor 23a. The measurement value of the load cell 12 at that time is taken in and added for a unit time, and the supply amount is calculated. COPYRIGHT: (C)2006,JPO&NCIPI
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