| 摘要 |
The invention relates to a device for welding a tubular lining of a wastewater pipe, comprising a retainer for the butting longitudinal edges (8, 9), which are intended to be welded, of a plastic panel (5) bent to form a pipe and comprising a welding apparatus (25). In order to create advantageous welding conditions, the retainer for the two butting longitudinal edges (8, 9) of the plastic panel (5) comprises a respective clamping apparatus (6, 7) for each longitudinal edge, comprising a stationary clamping bar (10) on the outside of the pipe and a movable clamping bar (11) connected to an actuating drive (12) on the inside of the pipe, the stationary clamping bars (10) are located across from each other with respect to the butt joint between the two longitudinal edges (8, 9) while leaving a gap (21) open, at least one of the two movable clamping bars (11) forms a stop (36) for a longitudinal edge (8) of the plastic panel (5) in a position against the associated stationary clamping bar (10), and a guide (22) along the gap (21) between the stationary clamping bars (10) is provided for the welding apparatus (25). |
