| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for measuring a residual length of a raw sheet roll for corrugated cardboard sheet production apparatus which allows early acquisition of a residual length of a raw sheet of a raw sheet roll.SOLUTION: A device for measuring a residual length of a raw sheet roll for a corrugated cardboard sheet production apparatus includes raw sheet racks (22, 26, 32) provided with raw sheet rolls (40 to 45) which deliver raw sheets (2, 4, 10) to splicers (24, 28, 33), raw sheet roll one-rotation sensors (53, 54), flow length detection means (56, 58) of detecting a raw sheet flow length Y per one rotation of the raw sheet roll, storage means (62) of storing an average sheet thickness M' and a diameter d of a cardboard core for every type of a raw sheet, obtained preliminarily, and raw sheet residual length calculation means (58) of calculating a temporary raw sheet residual length L' of the raw sheet roll on the basis of an average sheet thickness M' and a diameter d of the cardboard core for a raw sheet of the same type as the specified type of the set raw sheet. |
