Originally, inspections were made with inspection equipment from other makers that used rule-based algorithms. As there were restrictions on alignment, large-scale equipment was needed to perform inspections. Further, in order to see all of a cap’s outside and underside, these devices came equipped with 14 cameras. For damage inspections of a cap’s interior, such equipment used X-rays.
There were three main problems with cap inspection equipment
When inspecting a cylindrical workpiece such as a milk cap, it used to be necessary to take images of the inside and outside of the workpiece from multiple directions with multiple cameras. However, by using a special lens, it is now possible to take images of the entire circumference with a single camera. This simplifies the layout of the vision system and speeds up the inspection process, as it eliminates the need to take images multiple times and rotate the workpiece. Furthermore, by using AI, automatic positioning, which was difficult with conventional rule-based algorithms, has been achieved, and the system has been downsized and made less costly.
Through these solutions, inspection equipment that used to cost 100 million yen or more per unit was reduced to 20 million yen or less.