... mount QFP, QFN, PLCC etc. Semi-auto pick and place machine MODEL:TP39VI. Machine structure (TP39V picture) Main PartsAir pump adjustment buttonmovable mounting ... the component, the component will be suction up automatically . And then move to mounter head to PCB pad, visional system ... feeder 3 group3,Vacuum air pump(has installed on main machine) 14,PCB position platform 1 suit5,Operation support board ...