Research of Multi-Point Temperature Control Method in the Heating System of 3D Glass Hot Bending Machine

3D glass hot bending machine is widely used to produce 3D glass. The heating system is its one of key components. The uniformity of surface temperature distribution of the heating plate in the heating system decides the quality of 3D glass products. At present, the heating system of 3D glass hot bending machine mainly uses single-point temperature control method to adjust the system temperature. However, the single-point temperature control method cannot guarantee the uniformity of surface temperature distribution of the heating plate. In this research, multi-point temperature control method was proposed and the simulation model was established by ABAQUS. The control effect of single-point control method and multi-point temperature control method were compared though simulations and experiments. The results show that the multi-point temperature control method can reduce the surface temperature difference of the heating plate and achieve temperature uniformity so as to improve the quality of 3D glass products.