| 摘要 |
<p>The device (1) has a transport channel (2) comprising an inlet opening (4) and a blow-in opening (11). A chamber (9), an outlet (10) and blow-out openings (15) are connected to the transport channel at a predetermined distance downstream of the blow-in opening. A switchover device switches over between suctioning of a drawing mandrel (5) and blowing of the drawing mandrel. The chamber, the outlet and the blow-out openings are closable by a valve element (16) and exhibit changeable blow-out resistance. The valve element is displaceable parallel to a flow direction through the transport channel.</p> |
