The present invention discloses a sand adding dosing mechanism for a core shooting machine, said core shooting machine having a lower machine frame and an upper machine frame located above said lower machine frame, wherein a movable shooting head device is provided on said lower machine frame, said sand dosing mechanism comprising a sand storage container and a first sand adding valve, said sand storage container being mounted to said upper machine frame, said first sand adding valve being provided at the sand discharge opening of said sand storage container, characterized in that said first sand adding valve is a first sand adding valve regulatable valve, wherein the above-mentioned sand addition metering mechanism further comprises a metering container, said metering container via a weighing element ent is connected to said upper machine frame, wherein the sand inlet opening of said dosing container is connected via said first sanding valve to the sand discharge opening of said sand storage container, wherein at the sand discharge opening of said dosing container, a second sand addition valve is provided, wherein in Sand Abzugposition befindlicher shooting head device said shooting head device is connected via said second sand adding valve to the sand discharge opening of said dosing container. The addition of sand is not adversely affected by the shape of the accumulation of molding sand. The present invention also discloses a sand addition dosing method for a core shooter.
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