| 摘要 |
<p>A plastic pipe part 1 is pushed across a head part 3 of a sealing sleeve 4, being supported by a support 8, thereby providing the plastic pipe part with a widened end 7. Subsequently the widened end is surrounded by an outer mould 11 with three successive widenings 12, 14, 15 and by means of a fluid pressure in the interior of the widened end 7 sealed by the head part 3, the widened end is provided with three socket end widenings 28, 22, 29.</p><p>After removal of the support 8, the end portion of the socket end is inwardly rebent around the head part 3, thus forming a groove chamber 5 retaining the head part 3 of sealing sleeve 4. Pushing the plastic pipe part across the head part is facilitated by applying a fluid pressure.</p><p>An apparatus for performing this method comprises an outer mould 5 with three successive mould widenings 12, 14, 15, a first mandrel 20, a second mandrel 21, a third mandrel 30, a fourth mandrel 31, a rebending member 26 and a supply conduit 10 for supplying a fluid under pressure in the space between outer mould 11 and the mandrels 30, 20, 21.</p> |
