Korea Advanced Institute of Science and Technology

Ha Yong Shin

Sang Ho Lee

Dong Yol Yang

Hyo Chan Kim

Disclosed herein is a hot tool which machines a workpiece made of foam material. The hot tool of the present invention includes a motor, a rotary unit which is coupled to the motor, and an electrode terminal which is connected to an outside power supply and contacts an electrode of the rotary unit. The hot tool further includes a heating body which is coupled to the rotary unit so that the heating body is heated by electric current supplied through the electrode terminal, with a spiral groove formed in a circumferential outer surface of the heating body. The hot tool further includes a polymer storage case which is provided at an upper position on the circumferential outer surface of the heating body, so that molten polymer that moves along the spiral groove is stored in the polymer storage case. Therefore, the hot tool of the present invention has increased machining accuracy and prevents a workshop from becoming messy due to molten polymer.

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Daejeon, South Korea

Ha Yong Shin