| 摘要 |
A corrugated sheet manufacturing apparatus includes: a forming roll pair (11a,11b) configured to roll a band material (10) into a first-shape corrugated sheet; a pitch-shortening roll pair (12a,12b) configured to shorten pitches of the first-shape corrugated sheet into a second-shape corrugated sheet; a shaping roll pair (13a,13b) configured to widen pitches of the second-shape corrugated sheet into an objective corrugated sheet; a distance changer (140) configured to change an axis-to-axis distance of the forming roll pair (11a,11b); a detector (113) configured to detect a quantity of the first-shape corrugated sheet delivered from the forming roll pair (11a,11b); and a controller (117) configured to control, if the detected quantity of the first-shape corrugated sheet is equal to a predetermined value, the distance changer so that the axis-to-axis distance of the forming roll pair (11a,11b) is changed from a first distance (d 1 ) to a second distance (d 2 ) that is larger than the first distance.
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