高精度封帽机的视觉识别对位方法
High-Precision Alignment Structure Design of the Fully Automated Cap Sealer

针对不同透镜类型的TO (Transmitter Optical)管帽，为了提高焊接产品的同轴精度，设计了一款高精度封帽机焊接系统，其应用视觉对位系统，采用直接识别方法和间接识别方法两种高效率的视觉识别对位方法精准得到TO管帽透镜中心和TO管座芯片发光点的偏差值，反馈于高精度XY对位平台进行定位补偿，再进行预压放电焊接，从而提高产品的同轴精度，使得产品的性能得到进一步提高。
In order to improve the coaxiality of the welding products, for different types of TO (Transmitter Optical) lens cap, the fully automated cap sealer uses a high-precision alignment structure design, which two methods of efficient visual alignment method. The “direct identification method” and “in-direct identification method” obtain accurately the deviation value about lens center of TO cap and the chip markers of the TO header. Then, the high-precision XY alignment stage uses this deviation value for positioning compensation. And the equipment carries out pre-pressure discharge welding, so as to improve the coaxial accuracy of the product and further improve the performance of the product.