Patent ID: 6601364
Filing Date: 2003-08-05
Classification: B43M,B65H

Abstract:
In an envelope inserting machine wherein a plurality of enclosure feeders are used to feed documents to a chassis, wherein each enclosure feeder has a releasing device to release enclosure documents, one at a time, and the chassis has a chassis driving device to drive a chassis transport in order to gather the released documents before the released documents are collated for insertion, a method of synchronizing motion in an operational cycle between the chassis driving device and each of the releasing devices by using a plurality of encoding devices to obtain actual displacement amounts of the chassis driving device and each releasing device as a function of time, wherein said operational cycle has a number of commanded positions for defining motion profiles of each releasing device relative to the chassis driving device, said method comprising the steps of:1) obtaining an actual displacement of the chassis driving device; 2) obtaining a theoretical displacement of each releasing device based on the corresponding motion profile of the respective releasing device and the actual displacement of the chassis driving device in order to control the movement of the respective releasing device; 3) obtaining an actual displacement of each releasing device, 4) obtaining the discrepancy between the actual displacement and the theoretical displacement for each releasing device; and 5) adjusting the movement of each releasing device so as to substantially eliminate the displacement discrepancy in order to synchronize the motion of the chassis driving device and each releasing device.