Development of Toggle Clamp Mechanism of All Electric Driven Plastic Injection Molding Machine

The toggle mechanism has many advantages as a clamp mechanism of all electric driven plastic injection molding machine. Four-point type and five-point type of toggle mechanism are mainly used for this purpose. In this paper, a new systematic determining process of each geometric dimension of toggle mechanism will be shown instead of conventional process based on trial and error. And in this study of searching optimum geometric dimensions, a new idea of five-point type toggle mechanism was innovated and named RDP five-point type toggle mechanism. This RDP five-point toggle mechanism realized more compact size and faster motion comparing with conventional toggle mechanism.