Patent ID: 9187286
Filing Date: 2015-11-17
Classification: B65H

Abstract:
1. A folding device for cutting and folding a continuous paper, comprising: a cutting mechanism including a cutting blade; a folding cylinder including a folding blade mechanism and a paper edge holding mechanism; and a folding mechanism for receiving and folding at least one sheet released by the folding cylinder, the folding device comprising: a signal output part for outputting an activating signal when the number of the sheets overlapped on an outer circumferential surface of the folding cylinder reaches a desired number, a folding blade mechanism operation control mechanism for operating the folding blade mechanism provided in the folding cylinder; and a paper edge holding mechanism operation control mechanism for operating the paper edge holding mechanism provided in the folding cylinder, wherein the folding blade mechanism operation control mechanism and the paper edge holding mechanism operation control mechanism each comprise: a drive cam provided fixed between a frame that rotatably supports the folding cylinder and a side surface of the folding cylinder, the drive cam including an endless cam surface in which a distance from an axial center of the folding cylinder changes in a predetermined state; a masking cam capable of angular displacement around an axial center of the folding cylinder, the masking cam including a mask cam surface for invalidating a small diameter area of the endless cam surface of the drive cam when the mask cam surface overlaps the small diameter area; and a masking cam drive means for causing angular displacement of the masking cam around the axial center of the folding cylinder from a state that the small diameter area of the endless cam surface of the drive cam is overlapped by the mask cam surface of the masking cam to a state that the small diameter area of the endless cam surface of the drive cam is not overlapped by the mask cam surface of the masking cam based on the activating signal outputted from the signal output part; wherein the folding blade mechanism operation control mechanism and the paper edge holding mechanism operation control mechanism each have a plurality of the masking cams provided, and each have the masking cam drive means provided such that each of the respective masking cams can be separately driven.