Patent ID: 6190111
Filing Date: 2001-02-20
Classification: G01R

Abstract:
Method for cyclically inverting a plurality of electronic devices comprising the steps of: providing a primer tray; conveying an input tray carrying the plurality of devices in an input orientation in a one-way travel direction alone a conveying path to a processing position beneath the primer tray; moving at least one of the trays out of the conveying path and positioning the input tray beneath and closely adjacent the primer tray; clamping the input and primer trays together; rotating the clamped trays 180.degree. to position the primer tray beneath the input tray, with the plurality of devices being carried by the primer tray in an output orientation inverted from the input orientation; unclamping the rotated clamped trays; moving at least of the trays after unclamping so as to position the primer tray beneath but spaced from the input tray and into the conveying path; conveying the primer tray carrying the plurality of devices in the output orientation in the travel direction and unclamped from and from beneath the input tray; and orienting the input tray to constitute the, primer tray for a successive cycle.