Lettuce Harvester Development (Part 3) - Analysis of Work Process for Combined Technical Element and Examination of Cut End Processes

摘要

We invented a method of expressing the operation system by focusing on the process and conveyance conditions of the harvest work and symbolizing and arranging them. With this method we examined a real harvester which combined an effective operation system and a technical element. When we tested the length of time which fluid oozed from the cut end of the lettuce, we concluded that it is better if the "oozing time" is longer than a minute. This is because it is very difficult to decide on which length of time after cutting, among differing species of lettuce, is ideal to keep browning levels even. From the results of this research we produced the 6th. trial machine and tested it. This machine was equipped with all systems for cutting, conveyance, adjustment, cut end processing and packing. The trial proved that the machine can be put to practical use.