Capacitance control system for pneumatic punch press feeders

摘要

An improved multi-stroke control system for a pneumatically operated feeder for punch presses and the like; such system including means to charge and discharge a pneumatic capacitance. The pneumatic capacitance is adapted to be charged in response to the initiation of a first operative cycle of the feeder and to be discharged in response to the completion of said first cycle; said discharge being adapted to initiate a second operative cycle of said feeder. Once triggered the feeder may execute a number of successive operative cycles, the particular number being dependent on the effective volume of said pneumatic capacitance.