METHOD AND DEVICE FOR WELDING TWO THERMOPLASTIC PARTS TO BE JOINED ALONG A WELD SEAM BY MEANS OF A LASER

摘要

A system for welding two thermoplastic parts (8, 9) to be joined along a weld layer (3) by laser operation with a laser beam (2), the laser laser beam (2) Is controlled in its beam direction (R) in the work area (A) by a control method using corresponding control data, - in the connection plane (F) in the area around its own focus (W) of the laser beam (2) on the connection plane (F) and / or the position of the focus (f) relative to the connection plane (F) In particular the beam diameter d, which is moved in the first linear moving component of the main advancing direction H along the path of the weld layer S to be produced, and the oscillation width width OAW, In order to cover the transverse weld layer width (B) with respect to the major advancing direction (H) having the first linear moving component The width of the beam area passing by the laser beam 2 in the transverse direction with respect to the main advancing direction H coincides with the target width B of the weld layer S, (OAW), depending on the beam dimension in the connection plane F, preferably the beam diameter d, in a manner that makes it possible to set the beam width d in a certain way.