Bumper type accelerated ejectors have the same application as pin type accelerated ejectors. They accelerate some pins faster than others to give a push to one side of the molded part. However, bumper type units are used to accelerate the entire upper ejector assembly in a dual ejector assembly mold. The ejector pins in the upper assembly unit are accelerated faster than the pins in the lower ejector assembly. A minimum of four accelerated ejector units are normally used in this application.
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