| 摘要 |
A welding machine for butt welding of plastic profiles is outfitted with profile clamping units (2, 3) capable of sliding in relation to each other, and a heat reflector (15) which can be introduced between the front surface of two profiles to be welded, whereby the clamping units (2, 3) comprise weld boundary blades (2b, 2f, 3b, 3f) aligned parallel to the profile front surface and mounted on the profiles. In order to enhance welding efficiently and produce precisely coordinated weld joints, the clamping units (2,3) are designed to accommodate two superimposed profiles (U, O), and feature in addition to the external boundary blades (2b, 2f, 3b, 3f ) an intermediate boundary blades (5, 6) insertable between the profiles (U, O), yielding elastically in the clamping direction of the profiles and moving along with the clamping units (2,3) in the direction of displacement. Fig. 1. |
