Paper guide unit for folding machine

A paper guide unit for a folding machine disposed in a signature delivery section of a rotary press in which web printed in a printing section of the rotary press is folded and cut at a folding section of the rotary press to produce signatures, which are then inserted between vanes of a delivery fan and dropped onto a conveyor located under the delivery fan through rotation of the delivery fan, said paper guide unit comprising:

• a guide member located in the vicinity of a rotation area of the delivery fan and having a signature guide surface having a shape substantially corresponding to the trajectory of vane tips of the rotating delivery fan, the signature guide surface coming into contact with rear end portions of signatures inserted between vanes of the delivery fan in order to guide the signatures toward the conveyor;
• movable means for supporting said guide member and for being reciprocatively movable in a substantially horizontal direction to move said guide member toward or away from the delivery fan;
• adjusting means linked to said movable means for moving said guide member supported by said movable means toward or away from the delivery fan via said movable means to thereby adjust the gap between said guide member and the delivery fan;
• and
• posture-holding means provided in said movable means for selectively holding said guide member in either a guide posture or an opening posture, said guide member in the guide posture facing the trajectory of vane tips of the delivery fan so as to guide rear end portions of signatures, said guide member in the opening posture being angularly displaced far away from the delivery fan and not facing the trajectory.