Lpkf Laser & Electronics Ag

Lpkf Laser & Electronics Se

Michael Jonathan Schwalme

Manuel Sieben

Tobias Jaus

Benjamin Knoll

Nasir Fitil

An apparatus for joining, in particular laser welding, two components, in particular plastics components, comprises&#x2014;two workpiece receptacles () for respectively holding the two components () to be connected, &#x2014;in each case one bearing element, preferably a bearing plate (), for each of the workpiece receptacles (), &#x2014;a clamping drive (SA) for at least one bearing element for feeding and bracing of the two components () held in the workpiece receptacles () during the joining process, &#x2014;a controller () for the clamping drive (SA) and in particular a laser welding device (LS), and&#x2014;a mechanically loose coupling between the clamping drive (SA) and bearing element () such that the two workpiece receptacles () are tiltable towards one another during feeding and bracing. Also disclosed is a method for operating such a joining apparatus during a joining process of two components () held in the workpiece receptacles (), in particular during a laser welding process.

Apparatus for joining, in particular laser welding, two components, and operating method for such a joining apparatus

A system for welding two parts to be joined made of thermoplastic synthetic materials along a weld seam by a laser operating with a laser beam having a beam direction within an operating field by a control method with control data corresponding to the weld-seam course to be produced, including a beam dimension in the region around its focus causing the welding, which is smaller in the joint plane than the target width of the weld seam to be produced, and is dependent upon the angle of incidence of the laser beam on the joint plane and/or upon the position of the focus relative to the joint plane, is displaced in a first movement component in a principal forward-feed direction along the track of the weld-seam to be produced, in a second, oscillating movement component superimposed over the former to cover the weld-seam width transversely to the principal forward-feed direction with an oscillation amplitude value, and is adjusted with a control method in its oscillation amplitude width in inverse dependence upon the beam dimension in the joint plane such that the width of the beam field covered by the laser beam in the transverse direction relative to the principal forward-feed direction corresponds to the target width of the weld seam.

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Fürth, Germany

Michael Jonathan Schwalme