P-Switch Pilot Operating Air Supply Controller
AssigneeEmhart Glass S.A.
InventorsLance Hudson Miller, Sten Bergsten, Ame Stenholm, Eliseo Angelo Di Nitto, Nils-Goran Akerberg
Life of this patent
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Abstract
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.
Claims14
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 P-Switch valve mounted on the blow side of the IS machine, with the P-Switch valve coupled to the EPVB and the blank side pilot air supply;
- and
- a piping network coupling the P-Switch valve to the pilot valve and to the blank side pilot air supply, with the P-Switch 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.
A method for controlling an IS machine when a defective container in a mold must be removed, the IS machine including at least one section having a blow side and a blank side, with the IS machine including an EPVB for controlling operation of a select blow head and blow mold, the method comprising:
- removing a blow side operating valve, blow side low pressure manifold, and a blow side exhaust manifold, each coupled to the blow head and blow mold;
- and
- installing a piping network on the IS machine, with the piping network in fluid communication with a blow side P-Switch valve, the EPVB, and a blank side pilot air supply, the piping network and blow side P-Switch valve configured to prevent operation of the blow mold and blow head from the blank side of the IS machine until the defective container is removed.
Dependencies are inferred from the claim text.