Patent ID: 8920103
Filing Date: 2014-12-30
Classification: B25J,H01L

Abstract:
1. An end effector for use in a workpiece handling system, comprising: a plurality of grippers, each of said grippers in communication with a respective fluid conduit adapted to interface to a suction system; a rotatable bracket holding said grippers; a rotary union, comprising a first fixed portion having a plurality of stationary connectors and a rotating portion having a corresponding plurality of rotating connectors, wherein each of said stationary connectors is in communication with a respective one of said rotating connectors through a respective conduit within said rotary union, wherein each of said rotating connectors are attached to a respective fluid conduit and wherein said rotating portion is affixed to said rotatable bracket; a slip ring, comprising a fixed exterior portion to which a first wire is connected and a rotating inner portion from which a second wire exits, wherein said first wire and said second wire are in communication with each other via said slip ring; a rotary actuator, positioned such that said slip ring is located between said rotary actuator and said rotary union; and a shaft, said shaft coupling said rotary actuator to said rotating portion, wherein said slip ring and said rotary union each comprise an interior bore through which said shaft passes, and said slip ring and said rotary union are disposed between said rotary actuator and said rotatable bracket.