TWI649275B

The invention provides a press forming device of a glass forming body, and can still implement cooling-press treatment with appropriate temperature even if under a circumstance of using a forming body of a cylinder die which limits relative motion more than a specified distance of drill bases at upper and lower sides. The press forming device (1) of the glass forming body performs pressing on a molding die (60), and internally has a main pressing part (80) which performs main pressing treatment on the molding die (60), and cooling-press parts (82, 84) which performs cooling-press treatment while cooling the molding die (60) on which pressing treatment is performed by the main pressing part (80), an upper die (62) is formed by materials whose Young modulus is larger than a second cylinder die (67) and coefficient of thermal expansion is smaller than the second cylinder die (67), and the cooling-press parts (82, 84) are configured to only apply pressure to the upper die (62) and a lower die (64).