Three-dimensional printing head with adjustable printing angle

A three-dimensional (“3D”) printing system, comprising:

• an extruding system including a feed pipe coupled to a printing material source and a nozzle coupled to the feed pipe, the nozzle having a longitudinal axis along which printing material is extruded during a printing process to form at least a portion of a 3D printed object, wherein the nozzle is configured to extrude printing material fed thereto by way of the feed pipe at a printing angle, the printing angle being defined by the angle between the longitudinal axis and the top surface of a layer of printing material being printed;
• a curing system including a plurality of curing components configured to cure the printed material at an adjustable curing angle after the printed material has been extruded from the nozzle;
• and
• a positioning system including a platform configured to support the extruding system and the curing system and a platform rotating subsystem configured to rotate the platform during the printing process, the platform having a fixed portion and a rotating portion that rotates with respect to the fixed portion, wherein rotating the rotating portion of the platform adjusts the printing angle and also adjusts movement of the curing system, wherein the fixed portion of the platform includes an end plate and the rotating portion of the platform includes a bracket proximate the end plate, the bracket being configured to rotate with the rotating portion and to interact with the end plate, wherein the end plate includes multiple sets of angle setting holes and the bracket includes a single set of angle setting bumps, and wherein the single set of angle setting bumps is configured to rotate and lock into place with different sets of the angle setting holes when the rotating portion rotates to different rotational positions.

A three-dimensional (“3D”) printing system, comprising:

• an extruding system including a feed pipe coupled to a printing material source and a nozzle coupled to the feed pipe, the nozzle having a longitudinal axis along which printing material is extruded during a printing process to form at least a portion of a 3D printed object, wherein the nozzle is configured to extrude printing material fed thereto by way of the feed pipe at a printing angle, the printing angle being defined by the angle between the longitudinal axis and the top surface of a layer of printing material being printed;
• a curing system including a plurality of curing components configured to cure the printed material after the printed material has been extruded from the nozzle;
• and
• a positioning system including a platform configured to support the extruding system and a platform rotating subsystem configured to rotate the platform during the printing process, the platform having a fixed portion including an end plate having multiple sets of angle setting holes and a rotating portion including a bracket proximate the end plate that rotates with respect to the fixed portion, the bracket having a single set of angle setting bumps, wherein rotating the rotating portion of the platform adjusts the printing angle and rotates the bracket to interact with the end plate by rotating the single set of angle setting bumps to lock into place with different sets of the angle setting holes.