| 摘要 |
Device for selectively depositing molten plastic materials. It comprises a support (3), an ultrasonic transducer (1), a sonotrode (2), a nozzle (4), integral 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 towards the melting chamber (5);
€¢ the melting chamber (5) comprises an inlet opening (5a) and an outlet opening (5b) having a smaller cross section allowing contact with said plastic material of the inner walls of the melting chamber (5); and
€¢ the melting chamber (5) is placed at the end part of said sonotrode and in communication with the internal channel (6) through the inlet opening (5a) and with discharging channel (6a) through the outlet opening (5b). |
