Heat treatment device for pet bottle preform with integral handle

A heat treatment device for a polyethylene terephthalate (PET) bottle preform with an integral handle, comprising an air-cooling knife, a heating furnace, and a transport mechanism, wherein the air-cooling knife is disposed on an outlet side of the heating furnace,

• wherein the transport mechanism is configured to transport the bottle preform into the heating furnace;
• the heating furnace is configured to heat the bottle preform;
• the transport mechanism is configured to transport the heated bottle preform to the air-cooling knife;
• the bottle preform comprises a bottle body and a handle disposed on the bottle body, and the air-cooling knife is configured to jet airflow to and cool a lower end of the handle, and
• wherein the air-cooling knife is disposed on a side of the bottle body of the bottle preform and below the handle, a first air outlet and a second air outlet are disposed on the air-cooling knife, a distance between the first air outlet and the bottle body is shorter than a distance between the second air outlet and the bottle body, an airflow jetted out from the second air outlet faces the handle and is vertically upward, and an airflow jetted out from the first air outlet faces the handle and is deflected to a side of the second air outlet.