3D printing lifting device

The utility model discloses a 3D printing lifting device. The 3D printing lifting device comprises a rack, a forming cylinder body, a sliding supporting mechanism, a bottom lifting mechanism and a top pulling and bearing mechanism. And the forming cylinder body is fixedly arranged at the upper part of the rack. The sliding supporting mechanism is arranged on the lower middle portion of the machine frame through the bottom lifting mechanism and located under the forming cylinder body. And a fixed part of the top pulling and bearing mechanism is fixedly arranged at the top of the rack and is positioned on the outer side of the forming cylinder body. Complete force bearing on the sliding supporting mechanism is achieved by arranging the top pulling and bearing mechanism, so that the bottom lifting mechanism is not affected by external force, accurate and stable control over the downward movement size in the printing process is greatly improved, the service life is prolonged, meanwhile, the product quality and th