Patent ID: 6066824
Filing Date: 2000-05-23
Classification: B21D,B21J,B23K,B23Q,B25B,Y10T

Abstract:
An improved resistance welding system having self-contained, closed loop cooling, comprising:a chiller associated exclusively with said welding system for removing heat from cooling fluid, said chiller having a feed port and a return port for said fluid;a welding transformer having a first inlet and outlet to define a first cooling path, said first inlet being coupled to said feed port, said first outlet being coupled to said return port of said chiller;a cable connected to a secondary side of said transformer at a first end for carrying secondary welding current, said cable including means coupled to said chiller for internally bidirectionally transferring cooling fluid; anda welding gun connected to a second end of said cable and having a pair of electrodes for applying said secondary welding current through a pair of workpieces, said welding gun including means for receiving, circulating, and returning cooling fluid to said chiller.