Multiple Robots With Overlapping Work Envelopes Function As Work-In-Process Transfer System
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
The positioning of multiple robots so that work envelopes of adjacent robots overlap, permits them to hand-off workpieces to one another, thus functioning as a work-in-process transfer system. The figure shows the present embodiment, in an automated assembly cell producing dot matrix printheads, where five robots 11 to 15 transport printheads through a series of workstations for testing and installation of a cover. Also shown is a typical arrangement of input and output ports through which totes, carrying workpieces, enter and leave the cell. In this example, robot 11 unloads printhead sub-assemblies, from tote 21, and loads them one at a time into fixture 1. Fixture 1 orients the printhead for the succeeding operation in which robot 12 transfers the printhead from fixture 1 to one of the three test fixtures 3.