Patent ID: 6209194
Filing Date: 2001-04-03
Classification: G01R,Y10T

Abstract:
An apparatus for loading semiconductor device packages into a burn-in board, and for unloading semiconductor device packages after a burn-in test from the burn-in board, said apparatus comprising:a feeder providing a feed tube carrying said semiconductor device packages, wherein said feeder comprises;a tube loader supporting the feed tube carrying the semiconductor device packages,a single transfer rail for transferring the semiconductor packages by free falling from the feed tube,a dual transfer rail separated from said single transfer rail, said dual transfer rail comprising a first transfer rail and a second transfer rail, andseparators for feeding the semiconductor device packages from said single transfer rail to said dual transfer rail, said separators being provided between said single transfer rail and said dual transfer rail, wherein each of said separators comprise a body having a first and a second cavity for receiving said two semiconductor device packages, said body moving in a horizontal direction into alignment with each of said first and second transfer rails in turn, such that when, in a first state, said first cavity is aligned with said first transfer rail and said second cavity is aligned with said single transfer rail, there through one of said semiconductor device packages in said single transfer rail is transferred to said second cavity and one of said two semiconductor device packages in said first cavity is transferred to said first transfer rail simultaneously, and when, in a second state, said first cavity is aligned with said single transfer rail and said second cavity is aligned with said second transfer rail, there through one of said semiconductor device packages in said single transfer rail is transferred to said first cavity and one of said two semiconductor device packages in said second cavity is transferred to said second transfer rail simultaneously;a loading tool for transferring two semiconductor device packages from said feed tube, one semiconductor device package from each of said first and second transfer rails, to a centering position;a DC test contact tool for transferring said two semiconductor device packages from said centering position to a DC test position where a DC test is performed;an insertion tool for loading said two semiconductor device packages after the DC test into a burn-in socket in a burn-in board where the bun-in test is performed;a removal tool for unloading said two semiconductor device packages after the burn-in test from said burn-in board and for transferring said two semiconductor device packages to a receiving position; anda sorting station for classifying said two semiconductor device packages depending on burn-in test results,each of said loading tool, said DC test contact tool, said insertion tool and said removal tool further comprising:a revolving tool provided with a servo motor having a rod screw;a transfer rod coupled to said rod screw via a connection rod; anda tool head for picking up said two semiconductor device packages and coupled to a lower part of said transfer rod; wherein said servo motor drives the transfer rod in a vertical direction and said two semiconductor device packages are loaded and unloaded via vertical movement of said transfer rod.