Automatic assembly system for surface mounted devices - optically measures actual assembly position to allow position correction and confirmation of presence

摘要

The automatic assembly system provides a high positioning accuracy by optical measurement of the actual position of the suface mounted device after initial positioning, with verification of the presence of the component. Pref., the component assembly head is coupled in a position feedback loop alowing the measured position of the s.m.d. to be corrected, with auxiliary regulation of the pressure and dwell time of the assembly head relative to the circuit board for each individual component. ADVANTAGE - Increased positioning accuracy reducing rejection rate.