PURPOSE: To provide a sand shaking machine simple in structure and minimized in the number of parts and failures by opening/closing a window provided on a body part by a tube which is vertically elevated/lowered in the body part by an air cylinder inside, vibrating the tube in the lowered condition, and taking the product with raising the tube.

CONSTITUTION: A tube 1 is opened/closed by an air cylinder 2 inside. A body part 3 is provided with a window 4, and the window can be opened or closed by elevating/lowering the tube. When a product is loaded on a jig from the window 4 and a switch is pressed, the tube 1 is lowered by the cylinder 2 and the window 4 is closed. The vibration is given to execute the sand shaking, and the tube 1 is elevated when the preset time by a timer is elapsed, and the window 4 is opened. The dropped sand is taken out together with a box 5 located below. The box 5 itself works as a lid, and prevents the noise from escaping. This constitution is useful for preventing the noise, simplifies the structure, and reduces failures due to the small number of parts.