Patent ID: 7303521
Filing Date: 2007-12-04
Classification: B65H

Abstract:
1. A folding apparatus of a rotary press, which includes: a cutting cylinder having at least one cutting blade device; a folding cylinder having at least one pin device and at least one blade device; and a jaw cylinder having a jaw device, which can cut a printed paper web, perform collect run in which a print paper sheet is wound around the folding cylinder and superposed and folded and straight run in which a print paper sheet is folded without being superposed, switch to either run type and discharge the print paper sheet subjected to collect run or straight run, the folding apparatus of a rotary press, comprising: a fixed pin cam which is fixed on a frame side and can protrude/retract an end of a pin of each pin device with respect to an outer periphery of the folding cylinder once per rotation of the folding cylinder so as to perform an operation of straight run; a correction pin cam which is provided being adjacent to the fixed pin cam so as to be capable of rotating around a shaft center of the folding cylinder with a number of revolutions different from that of the folding cylinder, can stop so as not to prevent an operation of the pin of each pin device protruded/retracted by the fixed pin cam in case of straight run, and protrude/retract an end portion of the pin of each pin device with respect to the outer periphery of the folding cylinder once per two rotations of the folding cylinder so as to perform an operation of collect run by an interaction with the fixed pin cam in case of collect run; a blade cam which is provided adjacent to the correction pin cam and integral with correction pin cam so as to be capable of integrally rotating around the shaft center of the folding cylinder with the correction pin cam and actuating a blade of the blade device correlatively with an operation of the pin at a position opposed to the jaw device, can stop with the correction pin cam and thrust a blade of each blade device into the jaw device once per rotation of the folding cylinder so as to perform an operation of straight run in case of straight run, and rotate with the correction pin cam and thrust the blade of each blade device into the jaw device once per two rotations of the folding cylinder so as to perform an operation of collect run in case of collect run; and a switching device consisting of switching means in which a clutch member that is movable in a clutch shaft direction between a drive side and a stop side both of which are provided to face each other in the clutch shaft direction, and comprises convex portions on both sides of a moving direction is provided with a distance between tips of the convex portions on the both sides slightly larger than a distance between end faces on the drive side and the stop side so that switching between a drive side connection, that drives the two cams to rotate in connection with the drive side, and a stop side connection, that cancels the connection with the drive side and stops the two cams in a predetermined rotation phase, can be performed in a force transmission path through which a rotation drive is transmitted to the correction pin cam and the blade cam at the same time, and both of the drive side connection and the stop side connection can be instantaneously achieved at the time of the switching; and detecting means for detecting a start-up timing of the switching means according to a rotation of a drive source with either collect run or straight run being specified, wherein either collect run or straight run can be selectively switched while actuating the folding apparatus, and the clutch member relatively rotates while coming into contact with the end face on the drive side or the stop side and comes into engaging with a concave portion on the drive side or the stop side.