Problem description：

In the production of automobile lamps and lanterns, the automobile lamp shell is mostly made of polymer materials such as PC and PMMA, which are easy to generate static electricity due to friction during injection molding and handling, and then absorb dust, fiber and other impurities. This will not only reduce the light transmittance of the lamp, resulting in uneven light irradiation, but also interfere with the subsequent coating and gluing processes-for example, residual impurities will cause coating leakage and poor sealing, which will eventually lead to a sudden drop in the product qualification rate and increase the rework cost, which has become a key production problem.

Solution

An automobile lamp enterprise introduced cyclone nozzle to solve this problem and used it in the lamp body pretreatment process. The nozzle is made of stainless steel, resistant to high pressure and wear, and can be adapted to automated production lines. For complex structures such as curved surfaces of headlights and multi-cavity taillights, by adjusting the installation angle and spray distance of the static eliminator, the lamp body can be fully covered without clean dead corners. After application, the single lamp treatment takes only 2-3 seconds, which is suitable for high-efficiency production rhythm. The cleanliness of the lamp body reaches more than 95%, the coating defect rate is reduced from 25% to 8%, and the coating defect rate is reduced from 18% to 5%, thus greatly improving the product qualification rate and production efficiency.