|The Coco™ Module, a product of five years of research and development, employs a simple linear motion to synchronize the opening and closing of the fluid valves in such a manner that they cannot overlap in the open position. Regardless of operator error or malfunction of other components, flawless valve sequencing is certain. This is how it works.Once the sensor confirms that both metering cylinders are filled, the Coco™air cylinder is energized to retract the cam pusher. As the pusher retracts (Frame A), it cams the lower flipper 90 degrees to close the inlet valves, and then continues its travel to cam the upper flipper to open the outlet valves.
The same signal that triggers the opening of the outlet valves energizes the main air cylinder to advance, pressing the metering pistons into their respective cylinders, thereby forcing the fluid components to flow simultaneously from the cylinders through the coco outlet valves. Following completion the dispense cycle, Coco™ extends its pusher (Frame B) to close the outlet valves and open the inlet valves, allowing the metering cylinders to refill.
Once both metering cylinders are filled, the Coco™ air cylinder is energized to retract the cam pusher. As the pusher retracts (Frame A), it cams the lower flipper 90 degrees to close the inlet valves and then continues its travel to cam the upper flipper to open the outlet valves.
Note that it is impossible for the inlet or outlet valves to open until after the opposite valves close. Coco™cannot make a mistake. The product is secure from ratio error due to valve overlap.
Coco™ valve sequencing has also eliminated a maze of fluid valves, actuators, control valves, and tubing otherwise required to route fluid components through a metering system. Now, a single modular assembly suffices in CD dispensers.
|Mechanically Actuated Ball Valves control the flow of the resin. The Coco™ synchronized flow of the base and catalyst components is further assured by a common mechanical linkage between the two inlet valves and the two outlet valves; one cannot open or close without the other. The valves are actuated 90° to fully open or fully close. Wide 1/2” valves and passages readily exhaust particles likely to interfere with check valves.Coco™ valve bodies are stainless steel investment castings, and the balls are hardened steel ujder an electroless nickel plating. The valves are rated at 3,500 psi.