AUTOMATIC CORRECTION APPARATUS FOR DEFLECTION OF FOLD IN PAPER FOLDING MACHINE

摘要

PURPOSE:To economize the labor in book making work by perfectly automating the stopper position adjustment of a contact guiding vane plate in a paper folding machine and automatically correcting the deflection of fold for the paper sheet having an erroneous cut dimension. CONSTITUTION:In the stopper mechanism 5 of the contact guiding vane plate 3 of a paper folding machine, automatic position adjustment is enabled by installing a motor-driven or other automatic controlled driving apparatus 6 which is operated by a control circuit E. A mark M is applied onto the blank part R on the back-surface side of the cut and superposed paper sheet which is reversed for the front surface through folding. Therefore, the top edge of a folded paper sheet P' is detected by a gate sensor 7 on the passage of a folded-sheet conveyor mechanism 4, and the position of the mark M at the moment is read at a same time by the mark reading sensors 8 and 9. A signal is transmitted to the automatic controlled driving apparatus 6 of the stopper mechanism 5, and when anormaly is detected, the stopper mechanism 5 is automatically corrected to a normal dimension position in accordance with the anormaly.