| 摘要 |
<p>An articulated coupling for supplying electrical energy and cooling liquid to a welding gun, particularly to a welding gun operated by means of an industrial robot, comprises a hollow, conductive body (1) with a pair of tubular, conductive connectors (6, 7) with respective spherical heads (11, 13) arranged in sliding electrical contact with corresponding seats (4, 5) of complementary shape in the body (1). The two spherical heads (11, 13) are urged against their respective seats (4, 5) by means of two telescopically-interconnected, hollow pistons (17, 18) which are sealingly slidable in the body (1) and define between them a thrust chamber (23) connected to a compressed-air supply (25). <IMAGE></p> |
