Feeding devices and 3d printing apparatuses

Abstract

Disclosed are a feeding device and a 3D printing apparatus. The feeding device includes a resin vat, a driving device and a conveying device. The driving device is connected to the resin vat, the driving device is connected to a container filled with a resin liquid through the conveying device, and the interior of the container is further in communication with the resin vat through the conveying device. When the height of the resin liquid inside the resin vat is lower than a first preset height, the driving device inputs gas into the container through the conveying device, such that the resin liquid inside the container is conveyed into the resin vat through the conveying device, thereby achieving automatic feeding to avoid a model printing failure due to lack of the resin liquid.

Dependencies are inferred from the claim text.