Patent ID: 7303522

Claim:
A parallel folding device of a folding machine, comprising: a folding-specifications inputting part through which folding specifications are inputted; a delivery inputting part through which delivery channels are inputted; a folding cylinder for transferring a sheet; a first jaw cylinder including gripping-holding means for gripping the sheet, which has been held by the folding cylinder, in a plurality of positions in the circumferential direction, the gripping-holding means of the first jaw cylinder including first gripping-holding means and second gripping-holding means; one second jaw cylinder, which is opposed to, and in contact with, the first jaw cylinder, which includes third gripping-holding means for holding the sheet in a plurality of positions in the circumferential direction, and which is rotatably supported; the other second jaw cylinder, which is opposed to, and in contact with, the first jaw cylinder, which includes fourth gripping-holding means for holding the sheet, and which is rotatably supported; and switching means, which switches the delivery channels in a way that, after the gripping-holding means of the first jaw cylinder are caused to operate in a position making the folding cylinder and the first jaw cylinder opposed to, and in contact with, each other, as well as after accordingly the first jaw cylinder is caused to hold the sheet thus transferred, the sheet is transferred from the gripping-holding means of the first jaw cylinder to any one of only the third gripping-holding means of the one second jaw cylinder as well as the third gripping-holding means of the one second jaw cylinder and the fourth gripping-holding means of the other second jaw cylinder, and which concurrently performs the switching of the folding specifications from the first jaw cylinder to at least any one of the one second jaw cylinder and the other second jaw cylinder in each of the delivery channels, wherein, the first gripping-holding means is operated in order that a sheet can be transferred to the third gripping-holding means, the second gripping-holding means is operated in order that a sheet can be transferred from the first gripping-holding means and the second gripping-holding means to the third gripping-holding means, and thereby the sheet is transferred from the gripping-holding means of the first jaw cylinder to only the third gripping-holding means, and the second gripping-holding means is operated in order that the sheet is transferred from the first gripping-holding means to the third gripping-holding means of the one second jaw cylinder, and in order that the sheet is transferred from the second gripping-holding means to the fourth gripping-holding means, and thereby the sheet is transferred from the gripping-holding means to the third gripping-holding means and the fourth gripping-holding means.