Multiple vacuum evaporation coating device and method for controlling the same

An evaporation coating device, comprising:

• a case;
• a plurality of cylindrical melting pots, each of said plurality of cylindrical melting pots arranged within a case each melting pot having a cylindrical side wall and a bottom, and an evaporation material arranged within each of the melting pots;
• a rotating part adapted to rotate the plurality of melting pots;
• a coating block plate adapted to block all but one of said plurality of melting pots at any time;
• a main heating device arranged inside said cylindrical side wall of a case of a melting pot of said plurality of melting pots and adapted to heat and evaporate the evaporation material contained in the melting pot;
• a preliminary heating device arranged inside said cylindrical side wall of a case of said cylindrical side wall of a directly adjacent melting pot of said plurality of melting pots and adapted to heat evaporation material contained in the directly adjacent melting pot;
• and
• a cooling device arranged in the case and adapted to prevent heat generated by the main and preliminary heating devices from passing therethrough,
• wherein said coating block plate has a circular shape with a V-shaped opening in which all of said plurality of melting pots are blocked by said coating block plate with the exception of said one evaporation source of said plurality of melting pots positioned under said V-shaped opening at a given point in time,
• wherein the preliminary heating device preheats the evaporation material and upon a single incremental rotation of the rotating part the main heating device heats said evaporation material to the point of evaporation, and
• wherein the case has a dual structure comprising an inner wall, outer wall and a closed space between the inner wall and the outer wall, the case having a plurality of cooling inductive pipes arranged in a serpentine manner within the closed space supplying cooling water to the closed space, each and every cooling inductive pipe of said plurality of cooling inductive pipes confined to a portion of the closed space and having its own supply pipe supplying cooling water and its own discharge pipe discharging water that has absorbed heat,
• wherein each of the cooling inductive pipes of the plurality cooling inductive pipes having at least four “U” shaped turns and the supply pipe and the discharge pipe are on opposite ends of a top and a bottom of the case and the plurality cooling inductive pipes entirely covering an interior of the case.