Based on the traditional six-bar toggle mechanisms, this study is focused on the design of two types of cam-link mechanisms. Six-bar toggle mechanisms are simple, and they have an extreme mechanical advantage in toggle position so that they are widely used in plastic forming machines. Cam-crank-slider and cam-double-slider linkage are the two types mechanisms that we concerned. And we find the difference between these mechanisms for kinematic and dynamic performance. The benefit of cam-link mechanisms compares to linkage mechanisms is more precision points. We can synthesize the curve profile with the demand for forming acceleration or stroke. Because we need interpret the kinematic characteristic of toggle mechanisms by using several boundaries condition of different curves. This study selects two kinds from foregoing curve for the model.