Importance

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Abstract

Disclosed are a 3D printing apparatus and a 3D printing method. The apparatus includes: a material extrusion portion, including a material accommodation chamber and an extrusion outlet in communication with the material accommodation chamber, where the material accommodation chamber is configured to accommodate a molten material, and the extrusion outlet is configured to extrude the molten material to a current printing layer; and a switch assembly, coupled to the extrusion outlet, where the switch assembly is configured to perform on-off control on an area at which the extrusion outlet is located, so as to form a plurality of sub-extrusion outlets with continuously adjustable widths.

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First Claim