Patent ID: 6371544
Filing Date: 2002-04-16
Classification: B21K,B65G

Abstract:
A workpiece transfer device, comprising:an elongated hollow housing having a top side; a plurality of actuating mechanisms, each having a cam member, and an actuating rocker arm operatively connected to said cam member, said actuating rocker arm of each of said actuating mechanisms having an output end that extends over said top side of said housing and that is movable toward and away from said top side of said housing when said cam member is actuated; a plurality of push mechanisms having a plurality of spindles disposed inside and spaced longitudinally of said housing and movable vertically relative to said top side of said housing, and a plurality of biasing units for urging said spindles to move upwardly, each of said spindles having an upper end extending through said top side of said housing to abut against said output end of said actuating rocker arm of a corresponding one of said actuating mechanisms by bias action of a corresponding one of said biasing units, each of said spindles being movable downwardly against the biasing action of the corresponding one of said biasing units when said output end of said actuating rocker arm of the corresponding one of said actuating mechanisms moves downwardly; a plurality of coupling devices, each having a cylindrical sleeve member sleeved rotatably on a corresponding one of said spindles, and at least one cantilever extending radially from said sleeve member for turning about the corresponding one of said spindles, said cantilever of each of said coupling devices having a distal end distal from the corresponding one of said spindles; a plurality of lever mechanisms, each having a lever connected pivotally to said cantilever of a corresponding one of said coupling devices, said lever of each of said lever mechanisms having a first end portion engaging the corresponding one of said spindles to move upwardly and downwardly therewith, and a second end portion adjacent to said distal end of said cantilever of the corresponding one of said coupling devices; and an elongated swing member connected pivotally to said distal end of said cantilever of each of said coupling devices to swing in a swing direction that is parallel to a length of said housing, said swing member having a plurality of primary vertical shafts extending therethrough and spaced longitudinally thereof, each of said primary vertical shafts having an upper end that is connected universally to said second end portion of said lever of a corresponding one of said lever mechanisms in order to move upwardly and downwardly together with said second end portion of said lever of the corresponding one of said lever mechanisms.