Macro-micro composite 3D printing shaft type receiving device

The utility model discloses a macro-micro composite 3D printing shaft type receiving device. The receiving device comprises a base; the large reduction ratio transmission mechanism is arranged on the top surface of the base; the conductive slip ring is detachably connected to the top surface of the base and is in transmission fit with the large-reduction-ratio transmission mechanism; the receiving shaft comprises a heat-resisting rod body, one end of the heat-resisting rod body is in transmission fit with the conductive slip ring, the other end of the heat-resisting rod body is fixedly sleeved with a metal pipe, a heating rod is arranged in the metal pipe, an end cover is installed at the end, away from the heat-resisting rod body, of the metal pipe, and a wire of the heating rod extends out of the metal pipe and is electrically connected with the conductive slip ring; a temperature measuring assembly; the utility model discloses a 3D printer electrostatic spinning high-voltage power supply cathode. According