Sole corner trimming soldering iron knife with placement protection function

The utility model relates to a sole corner trimming soldering iron knife with a placing protection function, which comprises a base and an electric soldering iron knife, the electric soldering iron knife is provided with a heat insulation shell and a cutting knife head, the top surface of the base is provided with a placing groove and a positioning slot, a supporting leg and an L-shaped plate are arranged in the placing groove, and the L-shaped plate is arranged in the positioning slot. The position of the L-shaped plate is matched with that of the cutting tool bit; supporting leg shafts are arranged at the two ends of the supporting leg, the supporting shafts are hinged to the containing groove and the heat insulation shell respectively, a containing groove is formed in the bottom face of the heat insulation shell, and a positioning leg capable of being overturned outwards is hinged to the interior of the containing groove; the L-shaped plate comprises a horizontally-arranged pressed plate and a vertically-a