The lifting and tipping device is equipped with a filled standard trolley. This is filled into the product supply container. A mixer in the supply hopper prevents segregation of the product during production. From the product hopper an adjustable amount of product is sucked into the metering piston. When a tray is detected on the conveyor belt, the filling process begins. Dosing is continuous while the tray is transported on the conveyor belt. Afterwards, the filling valve moves back to the original position and the filling process starts again.