| 摘要 |
<p>The head (1) has a support (2) in which a stripping tool (B) is mounted. The support delimits an outlet opening (4) through which the tool acts. A series of movable elements (11) extends parallelly next to each other over a periphery of the support. The movable elements are elastically stressed in extension with respect to the support for forming a shape and height adjustable projecting confinement barrier between retracted and extreme outlet positions. The tool delimits a suction chamber communicating with exterior of the support via air intake passages (27).</p> |
