| 摘要 |
PURPOSE:To quicken the inverting speed by providing a plurality of pinch rollers while facing each other at the inside/outside of double arched sheet guide thereby inverting the sheet without changing the advancing direction. CONSTITUTION:Small and large tubular sheet guides 15, 16 are fitted coaxially to maintain the gap (g) at several mm. then pinch rollers 17 (pair roller 17-1, 17-2); 18 (18-1, 18-2); 19 (19-1, 19-4) for carrying a sheet P along this gap (g) are provided. Pair pinch rollers 17 are provided at the inlet and outlet of sheet guides 15, 16 while the pinch roller 18 is arranged while forming predetermined angle with the avancing direction of sheet P. Then pinch rollers 17-19 are rotated by driving mechanism in the arrow direction to feed the sheet P on a spiral locus in the direction inclining from the axis of sheet guides 15, 16 and turn by 180 deg. and invert. |
