Patent ID: 6053234
Filing Date: 2000-04-25
Classification: H01L,Y10T

Abstract:
A transfer device for transferring a lead frame between a transfer position and a feeding position, said transfer device comprising:(a) a front finger including a first plate-like lead frame support, and a first pair of cylinders operatively connected to said first lead frame support so as to move said first support between an initial transfer position and an intermediate transfer position, said first pair of cylinders comprising a vertical cylinder operatively connected to said first lead frame support so as to move said first support vertically, and a horizontal cylinder operatively connected to said first lead frame support so as to move said first support horizontally;(b) a platform at which the intermediate transfer position is defined, and a sensor operatively associated with said platform so as to sense the presence of a lead frame moved onto the platform by said front finger when the lead frame support of said front finger is moved from said initial transfer position to said intermediate transfer position; and(c) a rear finger including a second plate-like lead frame support, and a second pair of cylinders operatively connected to said second lead frame support so as to move said second support between the intermediate transfer position and a feeding position, said second pair of cylinders comprising a vertical cylinder operatively connected to said second lead frame support so as to move said second support vertically, and a horizontal cylinder operatively connected to said second lead frame support so as to move said second support horizontally.