Vorrichtung zum Fixieren gedruckter Schaltungen in einer Bestückungsmaschine

摘要

An apparatus for automatically fixing a printed circuit board to a predetermined position on a worktable of an automatic electronic components insertion machine having a non-shiftably arranged reference positioning pin and a shiftable positioning pin which is automatically shifted by an automatic shifting unit, including a numerically controlled rotary drive unit and a feed screw mechanism. The shiftable positioning pin is arranged so as to be always shifted from a predetermined origin position toward or away from the reference positioning pin in response to a change in the size of printed circuit boards to be fed onto the worktable.