A core manufacturing apparatus comprising: a storage unit configured to store core sand; a kneading vessel, which is tubular, configured to be fed with the core sand though a feed port to which the storage unit is coupled; a kneading rod provided inside the kneading vessel so as to extend in a longitudinal direction of the kneading vessel, and configured to knead the core sand by rotating around an axis parallel to the longitudinal direction; and a piston configured to eject the kneaded core sand from one end, in the longitudinal direction, of the kneading vessel, wherein: the kneading vessel is configured to be able to transition between a horizontally lying state and a vertically standing state by turning around a first shaft; the kneading vessel is configured to be fed with the core sand in the horizontally lying state through the feed port that is located on an upper side of the kneading vessel; the piston is configured to eject the core sand downward and pack the core sand into a mold with the kneading vessel in the vertically standing state; and the storage unit is coupled to the kneading vessel so as to be turnable around a second shaft parallel to the first shaft, and is configured to remain coupled to the kneading vessel in the same posture while the kneading vessel turns. a storage unit configured to store core sand; a kneading vessel, which is tubular, configured to be fed with the core sand though a feed port to which the storage unit is coupled; a kneading rod provided inside the kneading vessel so as to extend in a longitudinal direction of the kneading vessel, and configured to knead the core sand by rotating around an axis parallel to the longitudinal direction; and a piston configured to eject the kneaded core sand from one end, in the longitudinal direction, of the kneading vessel, wherein: the kneading vessel is configured to be able to transition between a horizontally lying state and a vertically standing state by turning around a first shaft; the kneading vessel is configured to be fed with the core sand in the horizontally lying state through the feed port that is located on an upper side of the kneading vessel; the piston is configured to eject the core sand downward and pack the core sand into a mold with the kneading vessel in the vertically standing state; and the storage unit is coupled to the kneading vessel so as to be turnable around a second shaft parallel to the first shaft, and is configured to remain coupled to the kneading vessel in the same posture while the kneading vessel turns. the kneading vessel is configured to be able to transition between a horizontally lying state and a vertically standing state by turning around a first shaft; the kneading vessel is configured to be fed with the core sand in the horizontally lying state through the feed port that is located on an upper side of the kneading vessel; the piston is configured to eject the core sand downward and pack the core sand into a mold with the kneading vessel in the vertically standing state; and the storage unit is coupled to the kneading vessel so as to be turnable around a second shaft parallel to the first shaft, and is configured to remain coupled to the kneading vessel in the same posture while the kneading vessel turns.