Tube target tube orifice anti-collision protective sleeve and forming die thereof

A middle boss and an annular groove located on the periphery of the middle boss are arranged in the middle of the upper end face of a bottom die base, an annular boss matched with the annular groove is arranged on the bottom face of a middle die base, and a forming convex ring and a positioning guide ring are sequentially arranged on the bottom face of an upper die base from inside to outside. The positioning guide ring is arranged in a positioning guide groove in the upper end face of the middle die base in a matched mode, the forming convex ring is located between the inner ring wall of the middle die base and the outer ring wall of the middle boss in the middle, and a U-shaped forming cavity with the same size and shape as a protective sleeve to be punched and formed is formed. The U-shaped forming cavity formed by the forming die is used for producing the protective sleeves, the forming quality of the protective sleeves is guaranteed, the production efficiency of the protective sleeves is improved, the pr