A brief analysis of the application of machine vision in laser marking

Machine vision usually refers to the process in which a machine automatically obtains an image of interest, then processes the image, and takes further "actions" after obtaining abstract information. In layman's terms, machine vision is to give machines the ability to "see", so that the machine can recognize and understand what it wants to see, and determine the location of the target it sees. Through cameras and computers, it frees the human eye and allows the machine to automatically measure and identify targets.

With the advancement of production technology, laser marking machines are facing new requirements and challenges. The area of ​​the devices that need to be marked is getting smaller and smaller, and the accuracy requirements are getting higher and higher. The representative one is IC (integrated circuit) technology in microelectronics technology. Its integration level is getting higher and higher, the speed is getting faster, and the volume is getting smaller and smaller. SMD devices have gradually developed into mainstream IC products, and their appearance is characterized by miniaturization. The application of laser marking machines in the semiconductor industry is mainly for marking the surface of IC chips, marking the manufacturer, model, production batch and other information on the surface of the IC chip.

The marking machines on the market now usually mark fixed areas, and the equipment is basically not equipped with a visual observation system, let alone a fine-tuning function during the marking process. After the computer sets the marking content, the device needs to be placed within the marking area, and sometimes manual adjustment is required. This method has very low accuracy and is only suitable for applications in industries that are not sensitive to mark position deviations, such as the production number of beverage bottles, the number of light rail tickets, and personalized markings on the back cover of mobile phones.

After using machine vision, it can not only clearly mark information on the chip surface, but also has dynamic adaptability, and can automatically correct the chip orientation error to ensure marking accuracy. In addition, the application of machine vision in laser marking equipment can not only improve the quality of the equipment, but also increase the marking speed to meet the needs of the rapid development of the modern semiconductor industry.

Machine vision is applied to production equipment and is one of the key technologies for automated production. It can improve production efficiency, improve product quality, and reduce production costs. At present, machine vision is developing rapidly. With the progress of society, machine vision will gradually develop and improve and be applied to more fields.