Optimization Analysis of Exposure Machine Light Source Layout and Heat Dissipation Structure Based on CFD Technology

Abstract

This paper presents a CFD-based optimization analysis of the light source layout and heat dissipation structure of PCB exposure machines. As the PCB manufacturing process becomes more advanced, exposure machines face issues such as uneven light sources and inadequate heat dissipation, affecting exposure quality and equipment stability. The study investigates the impact of light source layout on exposure uniformity and analyzes the cooling effect of the air-cooling system under different operating conditions. The results show that optimizing the light source layout significantly improves exposure uniformity, reduces light source overlap and dead zones, enhancing overall exposure performance. While the air-cooling system effectively reduces internal temperatures, high-load conditions lead to uneven temperature distribution, especially near the light source plate, affecting long-term operational stability. The paper proposes improvements to the airflow path and strength of the air-cooling system to further enhance temperature uniformity and equipment stability. This research provides valuable insights for the design and optimization of exposure machines in PCB manufacturing.