Conformal printing device for curved-surface circuits

A conformal printing device for curved-surface circuit, comprising:

• a device body comprising a stand and a support plate movable with respect to the stand;
• a print-head module mounted on the support plate, comprising a piezoelectric nozzle and an airflow assisting structure for applying an assisted airflow to guide charged jet ejected from the nozzle to be precisely printed onto a curved-surface base material below the nozzle;
• a motion module mounted on the device body, for making a tangent of a surface, on which a printing position of the curved-surface base material to be printed is located, be always perpendicular to a jet ejected from the nozzle, ensuring that the print-head module moves following the curved-surface shape and realizing conformal printing circuits on any complex curved surfaces,
• wherein the airflow assisting structure comprises a gas buffer chamber and a structure body disposed below the gas buffer chamber,
• the structure body is formed with a conical chamber, a gas tube connected to the conical chamber and an air outlet formed at a lower end of the gas tube therein,
• an upper end of the conical chamber is connected to the gas buffer chamber, the conical chamber and the gas tube are coaxially disposed around the nozzle so as to form a space for gas flowing between an outer wall of the nozzle and an inner wall of the conical chamber and the gas tube,
• an outlet of the nozzle is coaxially disposed with the air outlet and located above the air outlet.