| abstract |
(57) [Abstract] [Purpose] To provide a three-dimensional object assembly system capable of easily executing assembly under computer control. The closed loop extrusion system 10 comprises a nozzle 12 for extruding a material such as a hot melt adhesive, and devices 14, 1 for controllably positioning the nozzle according to specifications. 8 and 46 and a sensor 60 that produces a feedback signal indicative of at least one characteristic of the most recent extruded portion of material. The nozzle positioning device moves the nozzle to xy. Responsive to a nozzle motion list stored in the controller 46 for horizontal movement in a plane, and further including an object support stage vertically moved along the x-axis to move the nozzle on the z-axis. Works like. |