Cutting and heating device for knotted belt at material opening of flexible freight bag

The utility model discloses a flexible freight bag material opening knot belt cutting and heating device which comprises a working table, a flexible freight bag material opening containing area is arranged on the working table, a containing area boundary line is arranged on the flexible freight bag material opening containing area, a supporting panel is arranged on the working table and located on the opposite side of the containing area boundary line, and a knot belt winding and unwinding disc is arranged at the front end of the supporting panel. A welding and cutting part is arranged at the rear end of the supporting panel, and a belt clamping part is arranged in the middle of the supporting panel; clamping teeth, a groove, a pressing plate and a conveying roller are sequentially mounted at intervals on the clamping belt part from front to back; the welding and cutting part comprises a cutting mechanism and a heating mechanism, the cutting mechanism and the heating mechanism are correspondingly arranged tog