Rotary piston extruder head for 3d printer

A rotary piston extruder head for 3D printer, characterized in comprising a single housing, receiving a loading chamber and a special profile working chamber, in which a rotor (piston) moves, an eccentric shaft with a sliding cone fit located at the centre of the working chamber, with a rotor mounted on its eccentric;

• a three-sided rotor (piston) of a triangular shape having arc-shaped sides and a central fitment hole on one of butt ends of which an internal gear is located, the axis of the internal gear coinciding with the axis of the fitment hole;
• a hermetic front cover of the working chamber having a stationary gear, the axis of which coincides with the axis of the eccentric shaft;
• a hermetic back cover having an opening for the eccentric shaft and an area for fastening to the mounting frame;
• a mounting frame for mounting the extruder and a drive motor, as well as for fastening to a moving platform of a printer;
• an extruder tip connected to the housing, having a removable replaceable nozzle at an opposite end, as well as a built-in heat sensor and a built-in heating element;
• wherein the loading chamber, the working chamber and the extruder tip are connected by a flow channel passing therethrough and displaced from the centre of the eccentric shaft at a certain distance in the direction of rotor motion during extrusion;
• the working chamber is removable and can be made of different materials, and it is installed in a grooved cavity and fixed with a front cover;
• at least one heating element and a heat sensor are disposed within the housing.