| 摘要 |
It comprises a support (3), an ultrasonic transducer (1), a sonotrode (2), a nozzle (4), at an end part of said sonotrode, and a melting chamber (5) in communication with a deposition outlet (4a) trough a discharging channel (6a) wherein: an internal channel (6) extends through the sonotrode (2) allowing a loose passage of plastic material in solid state; said internal channel (6) extends along a section with a progressive reduction of its clearance area through a truncated conical section providing said discharging channel (6a) and containing said melting chamber (5); several longitudinal profiles or ribs (10), located as a cone generator and angularly offset are protruding from the interior wall of the conical section of the melting chamber (5), having a multifaceted end (11) facing and opposed to an entrance to said melting chamber (5). |
