TPU anti-wrapping front roller air knife device

The utility model relates to the technical field of front roller air knives, in particular to a TPU (thermoplastic polyurethane) anti-wrapping front roller air knife device which comprises a cutting tool bit, an air blowing mechanism for blowing air to a TPU film is mounted on the cutting tool bit, a cutting mechanism is arranged on the cutting tool bit, the air blowing mechanism comprises a heat-resistant air guide pipe, and the heat-resistant air guide pipe is communicated with the air blowing mechanism. Hoses which are evenly arranged at equal intervals are fixedly installed on the heat-resistant air guide pipe, an air outlet is fixedly installed on the end portion of each hose, and the heat-resistant air guide pipe, the hoses and the air outlets are internally communicated. The density of air blown by the air outlet is uniform, and blown air points to the front roller, so that the TPU film is prevented from being inversely wrapped on the front roller, the phenomena of piebale and uneven thickness on the s