| 摘要 |
<p>PURPOSE:To weld both members strongly by a method wherein a hole or a cavity is formed on a main member's side, a heating wire is coiled on the outer surface of the joining part on another member's side inserted into the above-mentioned hole or cavity to electrify the heating wire and the above-mentioned joining parts are heated and softened. CONSTITUTION:Into a main member 1 of thermoplastic resin is welded another heated member 2 of the same thermoplastic resin which takes the form of a bar, a projection or any legged cube. Then, on the main member's side is formed a cavity A tapering toward its depth while on said another member's side is formed a joining part 2A having a tapering peripheral surface which can be inserted in the cavity 1A. On the outer surface of this joining part 2A a heating bare wire 3 heated and raised in temperature by electrifying a heating resistance wire in advance is coiled spirally and tightly as both its terminals 3A, 3A are protruded, electrified and heated to melt the joining parts and weld both members.</p> |
