| 摘要 |
<p>The machine comprises a sonotrode (1), a matrix (4) of tubes (5) supplying the yarns (10) on a support sheet (7) for welding rolls of loops at the surface of said sheet. The matrix (4) is guided between slides (6) parallel to the longitudinal axes of the tubes (5) and perpendicularly to the surface on which the vibrations of the sonotrode (1) are applied. A drive mechanism (13, 14, 15) brings periodically the ends of the tubes (5) through which the yarns come out against the sonotrode (1) by pressing the base of a roll of loops and the support sheet (7) against the sonotrode for causing the welding therebetween.</p> |
