Injection moulding threaded rod constant-temperature cooling device

The utility model relates to an injection moulding threaded rod constant-temperature cooling device which comprises a threaded rod, an end cap, a threaded rod cooling liquid pipe, a flange, a stationary shaft, a fixing cover, a Haff and an adjusting rod, wherein the threaded rod is arranged on the top shaft of an injection machine through the Haff, a mounting groove hole is arranged in the threaded rod, a threaded rod cooling liquid pipe is arranged in the mounting groove, two ends of the threaded rod cooling liquid pipe are respectively welded with the end cap and the stationary shaft, one end of the adjusting rod is connected with the stationary shaft through screw threads, the other end is connected with the threaded rod through screw threads, the flange is sleeved outside the threaded rod, and is fixed on a thrust seat of the injection machine through the fixing cover, a threaded rod oil inlet and a threaded rod oil outlet are arranged on the threaded rod, an oil inlet groove and an oil outlet groove are