| 摘要 |
PROBLEM TO BE SOLVED: To upgrade the folding accuracy of a flap beyond the present level, regarding a device for folding a corrugated board sheet. SOLUTION: This device for folding a corrugated board sheet comprises a pressing member 42 with a planar part 42a, with which the broad planar area of a flap 2a of the corrugated board sheet 2 comes into contact, a conveyance means 33 which conveys the pressing member 42 at the same conveying velocity as that of the corrugated board sheet 2 almost in parallel with the conveying direction of the corrugated board sheet 2 and a rotating means 50 which helically rotates the pressing member 42 in collaboration with the conveyance means 33 during conveying with the help of the conveyance means 33. The pressing member 42 is supported by the conveyance means 33 in a freely rotating manner around an axis almost in parallel with the conveying direction of the corrugated board sheet 2. Finally, the planar part 42a of the pressing member 42 is brought into planar contact with the flap 2a during rotating with the help of the rotating means 50.
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