| 摘要 |
PURPOSE:To facilitate changing of folding position between even folding and wrap folding by providing a regulation member for moving fourth helical gear and double-helical great to be geared with first helical gear in axial direction. CONSTITUTION:When changing second folding from even folding to wrap folding, or reversely, a handle 14 is turned to move a threaded shaft 15 axially through screwing with a frame 23 thus to move a double-helical gear 17. Consequently, the helical gears 12, 13 will rotate in the opposite direction to move a tacker bar 4b in groove section 4a thus to rotate a tacker cylinder 4B and a pin cylinder 4A relatively by slight amount in the opposite direction. Consequently, the ratio between the distances L1, L2 from a tacker blade 9 to the pins 8 at the opposite sides is changed thus to change from even folding L1=L2 to wrap folding L1>L2 or L1<L2. It can be changed irrespectively whether the printing machine is operating or not. |
