The invention relates to a cooling device of plastic bottle tube heater rotator, wherein a round rotational dial disc is mounted on the heater; the dial tooth of said disc can be rotated to drive the plastic bottle tube; the heater is mounted at the outer side of plastic bottle tube, while the inner side has reflective plate; the dial disc has rotation disc whose edge contacts the open of plastic bottle tube; the outer baffle disc is mounted on the outer frame of rotation disc; the outer baffle disc is connected to the outer block or outer baffle tube; the outer baffle block or baffle tube are segmented, whose inner wall contacts the open of plastic bottle tube; the rotation disc and the outer baffle block or tube have cooling water holes that connected by bridge water tube; the rotation disc, and outer baffle block or tube contact the open of plastic bottle tube to rotate the bottle tube; via the cooling water holes, the high temperature will not be transmitted to the open. |