Patent ID: 7278203
Filing Date: 2007-10-09
Classification: B65G,B65H,G06K,H01L,H05K,Y10T

Abstract:
1. A chip transfer apparatus for transferring chips onto works, the apparatus comprising: a first carrier for carrying chips thereon; a second carrier for carrying works thereon; a plurality of end-effectors configured to receive chips from said first carrier and to transfer the chips onto the works carried by the second carrier; a first plurality of coaxial revolvers, each of which has one of said end-effectors, each of the coaxial revolvers configured to revolve around one stationary common axis independently; and a plurality of servo drives, each configured to drive a respective one of said coaxial revolvers independently and to change a periodic revolving speed of the respective coaxial revolver, wherein each of said end-effectors is affixed to a respective one of said coaxial revolvers and all of the end-effectors are distributed in one stationary common circle around said one stationary common axis, wherein each of said end-effectors revolves independently along the one stationary common circle in sequential order in a periodic motion by the action of said servo drives, and wherein the servo drives are configured to change a respective revolving speed of each of the end-effectors independently during the periodic motion.