Abstract:

To meet the specific requirement of spectacle lens manufacturing， a flexible zoom?molding device was proposed to realize the production of spectacles with different diopters on a molding system. This might further reduce the mold cost and the time for mold change. The UG static simulation module was used to simulate the metal diaphragm， and the equivalent stress diagrams were obtained at different set pressures. According to the simulation parameters of the metal diaphragm， the hydraulic pressure of the hydraulic station in the subsequent experiment was set reasonably. To perform the follow?up experimental verification with an injection?molding machine， pressures were input to the hydraulic cavity through the hydraulic station. The lens thickness was measured using a laser measurement instrument. The variance value of the lens thickness was calculated and compared under the same scheme and average value of the lens thickness with different schemes data. The results indicated that the hydraulic pressure of the hydraulic station was affected by the dimensional stability of the injection?molded spectacles. The influence of hydraulic pressure of the hydraulic station on the power of the spectacle lens could be characterized by the thickness of the spectacle lens.

Key words: flexible zoom, metal diaphragm, curvature, hydraulic cavity, glasses