An apparatus for making a casting mold, the apparatus comprising: a tank into which component materials for making a foam mixture are fed, the tank being formed with a pour hole that passes through a bottom wall of the tank and an opening section that opens toward an opposite side from a bottom wall side; a movable lid member that opens and closes an opening section side of the tank, and which lid member is movable in a direction to approach the bottom wall of the tank or in the opposite direction thereto by means of a lift mechanism; a pour-hole closure mechanism that opens and closes the pour hole of the tank; a stirring mechanism that stirs the component materials inside the tank with a stirring impeller so as to make a foam mixture in a state in which the opening section side is closed by the lid member and; a mold formed with a fill hole that passes into the mold, the fill hole being adjacent to the pour hole of the tank; and a compressed air supply system that supplies compressed air into the tank in a case in which the foam mixture inside the tank is filled into a cavity of the mold from the pour hole via the fill hole, with the pour hole in an opened state; and wherein the apparatus further comprises: a component material feeder which is configured to introduce component materials into the tank, the component material feeder being formed at a sidewall at the opening section side of the tank; a lift mechanism which is configured to raise and lower the lid member between a first position and a second position, the first position being positioned further toward the opening section side from a flow path lower end of the component material feeder, and the second position being positioned further toward the bottom wall side from the flow path lower end of the component material feeder; and a lift controller which is configured to control the lift mechanism such that the lid member is disposed at the first position in a case in which the component materials are fed into the tank from the component material feeder, and such that the lid member is disposed at the second position in a case in which the foam mixture inside the tank is filled into the cavity of the mold from the pour hole via the fill hole. a tank into which component materials for making a foam mixture are fed, the tank being formed with a pour hole that passes through a bottom wall of the tank and an opening section that opens toward an opposite side from a bottom wall side; a movable lid member that opens and closes an opening section side of the tank, and which lid member is movable in a direction to approach the bottom wall of the tank or in the opposite direction thereto by means of a lift mechanism; a pour-hole closure mechanism that opens and closes the pour hole of the tank; a stirring mechanism that stirs the component materials inside the tank with a stirring impeller so as to make a foam mixture in a state in which the opening section side is closed by the lid member and; a mold formed with a fill hole that passes into the mold, the fill hole being adjacent to the pour hole of the tank; and a compressed air supply system that supplies compressed air into the tank in a case in which the foam mixture inside the tank is filled into a cavity of the mold from the pour hole via the fill hole, with the pour hole in an opened state; and wherein the apparatus further comprises: a component material feeder which is configured to introduce component materials into the tank, the component material feeder being formed at a sidewall at the opening section side of the tank; a lift mechanism which is configured to raise and lower the lid member between a first position and a second position, the first position being positioned further toward the opening section side from a flow path lower end of the component material feeder, and the second position being positioned further toward the bottom wall side from the flow path lower end of the component material feeder; and a lift controller which is configured to control the lift mechanism such that the lid member is disposed at the first position in a case in which the component materials are fed into the tank from the component material feeder, and such that the lid member is disposed at the second position in a case in which the foam mixture inside the tank is filled into the cavity of the mold from the pour hole via the fill hole. a component material feeder which is configured to introduce component materials into the tank, the component material feeder being formed at a sidewall at the opening section side of the tank; a lift mechanism which is configured to raise and lower the lid member between a first position and a second position, the first position being positioned further toward the opening section side from a flow path lower end of the component material feeder, and the second position being positioned further toward the bottom wall side from the flow path lower end of the component material feeder; and a lift controller which is configured to control the lift mechanism such that the lid member is disposed at the first position in a case in which the component materials are fed into the tank from the component material feeder, and such that the lid member is disposed at the second position in a case in which the foam mixture inside the tank is filled into the cavity of the mold from the pour hole via the fill hole.