Cooling device of thread rolling machine

The utility model discloses a thread rolling machine cooling device, which relates to the technical field of thread rolling machine cooling, and comprises an oil tank, an oil pump, an oil stain filter, a static thread rolling plate, a movable thread rolling plate and an oil return pipe, the oil return pipe communicates with the side, away from the oil pump, of the top of the oil tank. By arranging the oil tank, the oil pump, the oil stain filter, the static thread rolling plate, the movable thread rolling plate, the oil return pipe, the filter screen cleaning mechanism and the waste residue collecting assembly, the filter screen cleaning mechanism rotates to clean filtered impurities at the top of the filter box, and the situation that normal filtering operation is affected due to impurity accumulation is avoided; and residues generated during filtering are collected through the waste residue collecting assembly to prevent the top of the filtering box from being blocked, and the problem that the filtered lubr