This machine from Del Packaging can produce 60 to 600 lids/min, and uses a rotary timing valve to simplify operations and save money. The continuous rotary lid plugging area prevents spillage and enables a higher production rate with their multiple plunge head turret, which accommodates 6 to 24 heads.
Having a single rotating valve that supplies and control single or multiple devices at each work station provides a simple solution. Del Packaging Solutions, Cypress, Tex., uses a rotary timing valve (RTV), manufactured by Scott Rotary Seals, Hinsdale, N. Y., in their Continuous Lid Plugging System.
The stationary component of an RTV has the timing sequence machined into the sealing surface. As the rotating outlets pass through the timing sequence, flow is automatically turned on and off depending on their orientation. The timing pattern on the interface between the stationary and dynamic sections of the valve defines the circuit.
The angular relationship of the workstation ports to the slotting arrangement automatically provides the on/off control required. This replaces conventional methods, such as using cams, solenoid valves, and switches. If an external control is needed at only one station, the valve manufacturer can provide for the external control by installing another inlet port for the function and adjust the timing slot accordingly. This eliminates the need for multiple-station control devices and also channels all control through the RTV.
