A core molding machine (10) comprises: a bearing frame (11) for supporting a device (12) for moving two mold parts (13, 14) of a core box (15), a head (16) for injecting mixture into the closed core box (15) by means of a corresponding compressor device (17), a hopper (18) for loading the mixture, the hopper being functionally connected to the injection head (16). The core molding machine comprises: a first device (20) for translation of the injection head (16) between the loading hopper (18) and the compressor device (17) arranged above the core box (15), and a second device (21) for translation of the injection head (16) between the active configuration and the clean configuration.