Touch switches are widely used in various industries such as audio and video products, digital products, remote controls, communication products, household appliances, medical devices, fitness equipment, etc. They are one of the important electronic components for the development of the electronic information industry. The quality of the tactile switch directly affects the lifespan and reliability of the product. Therefore, conducting visual inspection on it is a very important step. In the production process, domestic defect detection often relies on the visual inspection of workers. Due to the large number of inspection items, small product size, and high requirements for dimensional accuracy, it is easy for operators to experience visual fatigue, resulting in false or missed detections, making it difficult to improve the speed and quality of subsequent sorting processes.