| 摘要 |
<p>PURPOSE:To joint melted surfaces firmly without leaving bubbles between them when a branch saddle is welded to a synthetic resin pipe by touching and sliding the melted surfaces to each other or by bonding the melted surfaces under pressure touching and detaching them to and from each other several times. CONSTITUTION:When a branch saddle B is welded to a synthetic resin pipe A, the branch saddle B retained at a holder 4 is approached to the synthetic resin pipe A by operating a lever handle 6, they are heated and welded concurrently through a hot platen C between both bonding surfaces, then the hot platen C is removed to push the branch saddle B to the synthetic resin pipe A. Then, the holder 4 is buried in a cavity 31 against compression of a coil spring 34, the projection 311 of the cavity 31 and the projection 41 of the holder 4 are touched and detached to move in the diametric direction, the melted surfaces of the pipe A and the saddle B are fitted to each other and further they are compressed to be bonded firmly with each other.</p> |
