Material tube material weight calculating method of material tube piston extrusion type 3D printer

The invention relates to the technical field of 3D printers, in particular to a material tube material weight calculating method of a material tube piston extrusion type 3D printer. An upper limit sensor is arranged at the upper end of the moving Z-axis direction of a material rod fixing device, and a material rod limiting sensor is arranged on the material rod fixing device; the material weight in a material tube can be accurately calculated based on the printing manner of the piston extrusion type 3D printer, semi-automatic material return can be achieved, the situation that the material rod fixing device is located at a zero position is guaranteed, and the material weight in the material tube can be continuously calculated; and semi-automatic feeding can be achieved, the situation that the material rod fixing device is located at the zero position is guaranteed, the material weight in the material tube can be continuously calculated, and a model file can be split and printed according to the material weigh