Patent ID: 10864750

Abstract:
Herein described is a machine (100) for the ink-jet printing of three-dimensional objects (A), comprising: a plurality of spindles individually suitable to carry and drive an object (A) to be printed in rotation around a pre-set rotational axis of the spindle, and a first support and displacement system suitable to displace the spindles in succession along a pre-set loop path, stopping them one after the other in a plurality of operating stations; wherein said operating stations comprise: at least one input station (150) wherein the spindle receives an object (A) to be printed, a plurality of printing stations wherein the object (A) is ink-jet printed, and at least one output station wherein the printed object (A) is removed from the spindle; wherein each printing station comprises: a printing unit suitable for the ink-jet printing of the object (A) carried by the spindle found in the printing station, and a second support and displacement system suitable to vary the relative position of said printing unit with respect to the spindle found in the printing station; and wherein said printing unit comprises at least: one or more ink-jet printer heads, an ink tank, an ink pump suitable to transfer the ink from the tank to the printer heads, a vacuum pump suitable to create depression in the printer heads, and an electronic apparatus for controlling and commanding the ink pump, the vacuum pump and the printer heads.