Tuesday, February 14, 2012

Steel Belt and Tracking 8: EPC / Edge Positioning Control

Edge positioning is controlled by difference in pressure supplied to these 2 cylinders.
When the belt goes straight, supplied pressure is constant.
On the other hand when the belt leans to either right or left direction, air cylinder pressure on the leaned side is increased by control circuit, moving the belt to the opposite side.

Air cylinders are required to be heat-resistive, anticorrosive, and others, depending on operating conditions.