The mold industry is a traditional, complex and competitive industry.Enterprises are troubled by tight construction periods, high-precision quality requirements and frequent personnel flow every day.Although automated inspection technology has achieved construction results in all walks of life, few people have done special research on the visual inspection of mold surface defects, because most of them involve casting processes, often accompanied by harsh working conditions, high temperature and high pressure, high humidity, large dust and more interference, it is difficult for precision inspection equipment to operate perfectly under such conditions. Therefore, the mold inspection methods of many casting companies are still mainly manual inspection.

Online detection of defects of casting molds refers to auxiliary testing equipment installed on the punching machine or around the mold. It can detect surface defects of the mold as soon as possible to determine whether the standards are met and prepare for the next round of production.In the actual production process of a certain structural part casting enterprise, after the product is demolded, residue may be produced and left on the surface of the mold. If the mold is directly used for a new round of production, it will cause surface defects in the next round of product and affect the pass rate.Manual inspection is adopted. Because the casting ambient temperature is high (the temperature around the mold is up to 70℃, and the ambient temperature can reach 50-60℃), it is a great test for inspection operators. It has low inspection efficiency and high labor intensity, resulting in a high turnover rate, which is not conducive to the modern development of casting production.YunKao Technology Co., Ltd. has proposed a feasible solution in combination with the applications of mechanical vision and equipment reliability protection over the years.

The automatic detection equipment developed and designed by this project can realize automatic detection of molds through the organic combination of motion systems, control systems and visual systems. A set of mold inspection processes can be completed within 15 seconds, and the inspection situation can be recorded online and fed back to the central control room, effectively improving the production efficiency and product quality of structural parts products.

Schematic diagram of the detection device

This device mainly consists of two parts, the motion system and the visual system.The motion system includes an X-axis motion module, a Y-axis motion module, a Z-axis motion module and a device support system; the vision system adopts the Cognex industrial vision system, and the camera is fixed to the front end of the Y-axis motion module of the motion system. The position of the visual system is controlled and converted through the motion system, collects the residue on the mold surface, and compares it with the standard image. The computer draws conclusions to realize the quality detection of the mold surface.