Hot-press device

A hot-press device comprising:

• a heating furnace;
• an extensible portion which is extensible;
• a pair of punches which includes an upper punch and a lower punch provided in the heating furnace and vertically facing each other;
• a lower press ram which is connected to a lower surface of the lower punch;
• an upper press ram which is connected to an upper surface of the upper punch;
• and
• a pressing device which is connected to any one or both of the lower press ram and the upper press ram and presses the pair of punches such that the pair of punches are close to each other,
• wherein the lower press ram and the upper press ram or the lower press ram or the upper press ram includes a plurality of individual press rams which are disposed at intervals, each of the plurality of individual press rams having one end coupled to the pair of punches,
• wherein the upper press ram comprises:
• a single main press ram which is provided on a side of the pressing device;
• and
• a coupling member which couples the plurality of individual press rams and the main press ram to each other, and
• wherein the extensible portion surrounds the main press ram and a lower end of the extensible portion is connected to an upper end of the heating furnace and an upper end of the extensible portion is fixed.