Refrigeration pipe of vacuum coating machine

The utility model discloses a freezing pipe of a vacuum coating machine, which belongs to the field of vacuum coating machines and comprises a base, the upper surface of the base is fixedly connected with a case, the upper surface of the base is fixedly connected with the vacuum coating machine, and the upper surface of the base is fixedly connected with a cooling box. First through holes are formed in the right side surface of the case and the left side surface of the vacuum coating machine; second through holes are formed in the left side surface of the cooling box and the right side surface of the vacuum coating machine; by arranging the stepping motor, power can be generated, then the fixing rod is driven to rotate, the purposes that the fixing rod drives the freezing pipe to rotate and the interior of the vacuum coating machine is cooled evenly are achieved, by arranging the cooling machine, cold air can be generated, then the cold air is led to the interior of the freezing pipe through the circulation g