| 摘要 |
In a method for fastening an elastic sealing ring on the outer side of a pipe, a base portion of the seal is applied against the circumferential surface of the pipe, and a clamping strap (1) is fed from a supply (2) and placed under tension round the outer face of the base portion. The clamping strap (1) is secured to the pipe by spot welding in at least two welding spots, the spot-welding operation being carried out with the material of the sealing ring located between the clamping strap (1) and the pipe, the clamping strap (1) tightened on and welded to the pipe being separated from the supply (2) when making the last welding spot, at a location adjacent thereto. A device for fastening the sealing ring on the outer side of the pipe comprises, in addition to the clamping-strap supply (2), a movable means (3) for feeding the clamping strap (1) from the supply (2) to the pipe; a means (8) for applying the strap (1) on the base portion of the sealing ring; a means (18) for spot-welding the clamping strap (1) to the pipe; means (3, 4) for separating the clamping strap (1) from the supply (2); and a friction-exerting mechanism (4) for gripping and exerting a braking action on the clamping strap (1). |
