Method of forming bent heat dissipating unit and apparatus therefor

A method of forming bent heat dissipating unit, comprising the steps of:

• (a) sequentially putting a plurality of radiating fins on and around a straight heat pipe to form a heat dissipating unit;
• (b) separately positioning a plurality of locating die units of a forming die assembly into a space between two adjacent ones of said radiating fins on said heat pipe;
• wherein said locating die units are sequentially arranged side by side on a carrier of said forming die assembly, and any two adjacent ones of said locating die units are pivotally connected at an end to each other via a pivot;
• (c) extending two ends of said carrier of said forming die assembly through a forming block to connect to a processing machine;
• and
• (d) driving said processing machine to press said forming die assembly against said forming block, so that said heat dissipating unit located between said forming die assembly and said forming block is bent to a shape corresponding to a profile of said forming block.