| 摘要 |
PURPOSE:To control the route length of the web in a folding introducing part with high accuracy by detecting the displacement quantity of a turn bar by a position detection means and controlling the position of a correction roller on the basis of said displacement quantity. CONSTITUTION:A web W is introduced between press rollers 12a-12e and a tensile roller 16 to be longitudinally cut into two ribbons W1, W2 by a slitter 20. Subsequently, the ribbons W1, W2 are respectively guided to turn bars 24, 62 to be changed by 90 deg. in the feed direction thereof and guided to correction rollers 34, 72 to be fed out to tensile rollers 44, 46 and superposed on the roller 48 one over another to be fed out to a folding machine through a perforation roller 48. In a displacement quantity operation part 140, the displacement quantity of the correction roller 34 detected by a potentiometer 38 is compared with that of the turn bar 24 detected and adjusted by a potentiometer to output a comparing result to a correction signal generator 152. When the generator 152 supplies a correction signal to a correction roller driver 158, a motor 36 is driven to displace the correction roller 34 to a predetermined position. |
