The motor drives movable jaw assembly do reciprocating motion according to the desired trajectory under the action of belt and pulley. The angle between toggle plate and movable jaw increases when movable jaw moves up and the movable jaw closes to the fixed jaw. The materials are crushed in this process. The angle between toggle plate and movable jaw decreases when movable jaw moves down and movable jaw moves away from fixed jaw under the action of the tension rod and spring, then products after being crushed are discharged from the discharge opening.