P-switch pilot operating air supply controller

摘要

There is provided a system of an individual section machine (IS) having a blow side with a mold and a blow head, and a blank side, the system includes a P-Switch valve in fluid communication with an EPVB of the IS machine and with the P-Switch valve configured to control a valve pilot air supply to a predetermined pilot valve. When the P-Switch valve is activated, the blow side mold is set to an OPEN position and the associated blow head is set to an UP position. With the P-Switch valve of the system activated, the blow side machinery cannot be overridden from the blank side of the IS machine.

主权项

1. A system to control operation of a blow head and blow mold in at least one section on the blow side of an IS machine when a defective container in a mold must be removed, the IS machine including a blank side with a blank side pilot air supply, and an EPVB having an operation valve and pilot valve coupled to one of the blow head and blow mold, the system comprising:
a pneumatic shut-off valve mounted on the blow side of the IS machine, with the pneumatic shut-off valve coupled to the EPVB and the blank side pilot air supply; and a piping network coupling the pneumatic shut-off valve to the pilot valve and to the blank side pilot air supply, with the pneumatic shut-off valve and piping network configured to prevent operation of the blow side mold and blow head from the blank side of the IS machine until the defective container is removed; and wherein activation of the pneumatic shut-off valve to prevent operation the blowside mold and blow head cuts off supply of pilot air to the pilot valve.