Nozzle of hot melter

The utility model discloses a hot melt adhesive injection head. An adhesive discharge pass is arranged in the injection head to spray the hot melt adhesive, and air discharge passes are provided on both sides and the back of the adhesive discharge pass to blow the sprayed hot melt adhesive to be in the shape of an open arc. After applying the above structure, the utility model enables that the sprayed hot melt adhesive can fully enclose the rope rubber cord, and the expansion property of the rope rubber cord is more prominent, which not only reduces waste of raw materials, but also improves the working efficiency.