Method and device for manufacturing powder molded body

A device for manufacturing a green compact, comprising:

• a die having in a vertical direction a die hole in a shape matching a contour of the green compact including a through-hole at a part connected continuously to abase part;
• a lower punch inserted from an underside of said die into said die hole and forming a cavity to be filled with material powder together with said die,
• an upper punch inserted from an upside of said die into said die hole and pressurizing and compressing the material powder filled in said cavity together with said lower punch;
• a punch-out pin having a sectional shape corresponding to a cross-section of said through-hole, provided in said die to face said cavity, and inserted into a preform formed by temporarily compressing the material powder by means of both of said upper and lower punches to punch out a shape of said through-hole;
• and
• a refill pin having a sectional shape corresponding to the cross-section of said through-hole, provided in said die to face said cavity and to face said punch-out pin, moving backward in synchronization with forward movement of said punch-out pin when said punch-out pin is inserted into the preform, and moving forward in synchronization with backward movement of said punch-out pin when said punch-out pin is pulled out from the preform to refill the material powder into said through-hole.