| 摘要 |
Device for the formation of elongate sealing projections in plastic tubes which comprises a moulding ring 6, 3 subdivided into two sets of radially movable segments 6, 3 and an axially displaceable guide ring 2 having oblique surfaces 17 in relation to the segments 6, 3. The angle of inclination in relation to the axis of the guide ring 2 of the oblique surfaces 17 in a first group of segments 6 is greater than the angle formed by the oblique surfaces of a second group of segments 3.
|
