SAND DISPENSER Russian patent published in 2022 - IPC B22F12/00 B33Y30/00 B28B13/02 B29C64/255 

FIELD: 3D printing.

SUBSTANCE: This application relates to the field of 3D printing technology. The sand dispenser contains a sand storage chamber. Two sand unloading ports are located under the sand storage chamber and are a stepped port for unloading sand of the upper level and a port for unloading sand on a plate for pressing sand of the lower level, respectively. The stepped port for unloading sand of the upper level contains a plate (307) for unloading sand on the left side (307) and a plate (401) for unloading sand on the right side, made with the ability to interact with each other. Horizontal stepped ports are formed at the location of the lower parts of the two sand unloading plates, and the vertical gap between the stepped ports can be adjusted. The invention uses the characteristics of the angle of the natural slope of the sand, so that the sand is discharged when vibration occurs and the sand is not discharged when vibration does not occur. It also includes a port for unloading sand on a lower-level sand pressing plate, containing left and right plates (505) for pressing sand. The vertical sand discharge ports are located between the plates (505) for pressing sand on both sides, and the size of the vertical sand discharge ports can be adjusted to further facilitate the management of the amount of sand discharged. During the sand distribution, the sand comes from the step ports and enters the lower port for unloading sand on the lower level sand pressing plate. The whole process contains accumulation, stopping and then mixing.

EFFECT: ensuring the uniformity of sand unloading, controlling the amount of sand poured out, and preventing sand leakage.

21 cl, 16 dwg