APPARATUS FOR TEMPERING FLAT GLASS

The present invention relates to an apparatus for tempering flat glass, and more particularly to an apparatus for tempering flat glass, comprising: a preheating unit for preheating the flat glass placed in a transfer frame; a heating unit for heating the preheated flat glass; an annealing unit for annealing the heated flat glass; and a washing unit for washing the annealed flat glass, wherein the heating unit and the washing unit are arranged in parallel to each other, and wherein: both the heating unit and the washing unit re formed into a box shape with an inlet and an outlet; the preheating unit and the annealing unit are arranged so as to be movable along a guide, wherein both the preheating unit and the annealing unit are formed into a box shape with an inlet and an outlet, and a rail and the guide are arranged in a horizontal direction below the preheating unit and the annealing unit; and an open/shut door is arranged so as to be movable along the rail to selectively open/shut each inlet or outlet of the heating unit, of the preheating unit, and of the annealing unit; and a feed space is formed outside the heating unit and a discharge space is formed outside the washing unit, thereby improving the utilization of space, reducing real estate costs and defects, and improving productivity.