To protect sensitive electronic components from contaminants seeping in and to ensure safe and reliable operation, the components’ housing must be sealed hermetically. Using a laser source as a tool provides high welding speeds and produces fine welding seams with narrow welding radiuses. The advantage of precision laser welding is the contactless application of the laser’s energy, which avoids stressing the housing either thermally or mechanically. For example, to create the welding seam, the package to be welded is moved under a pulsed laser source causing the laser spots to overlap each other. This is ideal when the welding process is relatively simple, and the laser spot size is proportionate to the welding width.
For a consistently high welding quality, the size and spacing of the laser pulse overlap must remain constant; even at high speeds, and with complex geometries. PI’s motion solutions enable synchronization of the laser pulse overlaps and energy in line with the defined motion path.