To provide an internal pressure measuring method and an internal pressure measuring device for can vessel capable of measuring accurately the internal pressure of a can vessel having a can shell formed by applying DI (drawing and ironing) processing to a rolled metal plate material.
This internal pressure measuring device 1 for can vessel for measuring the internal pressure of can vessels 2 having the bottomed cylindrical can shell formed by applying throttling to the rolled metal material is characterized by having a constitution wherein a first measuring mechanism 4 equipped with pressing parts 8a, 8b and detection parts 9a, 9b from the upstream side toward the downstream side of a conveyance means 3 for conveying the can vessel 2, a rotation control mechanism 5 for rotating the can vessel 2 at an either angle of 45°±12.5° and 135°±12.5°, and a second measuring mechanism 6 are arranged, and an operation means 16 for calculating the internal pressure of the can vessel 2 based on the mean value of measured values outputted from the first measuring mechanism 4 and the second measuring mechanism 6 is provided.
GOKO HIROYUKI
MUTO HIDEYASU
Tadashi Takahashi
Masakazu Aoyama
Akihiko Eguchi
Hideyuki Sugiura
Yasuhiko Murayama
Noriko Yanai