Film cooling device

The utility model provides a film cooling device, including and smashing feeding device, heating device, extrusion device, first cooling wind ring, second cooling wind ring, herringbone splint and coiling mechanism, crushing feeding device passes through heating device with extrusion device and links to each other, and first cooling wind ring sets up outside extrusion device, and second cooling wind encircles and sets up in herringbone splint below, and the coiling mechanism links to each other through rolling roller train and herringbone splint. Adopt in the current film production process and cool off the membrane with wind ring air inlet in the top of adjacent die head. But in the blown film workshop, ascending because of the hot -air, the higher department in workshop temperature is higher, results in the film to go out the bonding at the herringbone splint and is in the same place, leads to the fact the opening performance poor, and the device not only encircles with wind above the die orifice and cools off the shaping, still in herringbone splint below, increases by one set of wind ring, and the continuation obtains adequate cooling behind the messenger film formation below the herringbone splint.