Patent ID: 7179073

Claim:
A controller for bypassing a pressure reducing valve in a blow-molding machine, comprising: a programmable cylinder, said programmable cylinder is operated by a fluid pressure and adjusts a relative position of a pin to a die; said pressure reducing valve, said pressure reducing valve controls said fluid pressure; an electrical circuit coupled to said pressure reducing valve, said electrical circuit regulates a cylinder pressure applied by said programmable cylinder to control said relative position of said pin to said die, said cylinder pressure is reduced during all time intervals except during a parison formation interval of a blow molding cycle, a microprocessor, said microprocessor regulates said cylinder pressure by said electrical circuit to apply said programmable cylinder to said relative position of said pin to said die by a profile/purge command, said profile/purge command initiates when an accumulator head opens to allow material to extrude from said accumulator head causing said microprocessor to transmit a series of pre-defined events to a head tooling positioning valve, said head tooling positioning valve signals said blow-molding machine to begin said parison formation interval, said parison formation interval signals a pressure reducing valve directional element to bypass said pressure reducing valve and allow full pressure to be supplied to said head tooling positioning valve, said head tooling positioning valve passes by pressure to a programmer cylinder circuit, said programmer cylinder controls movement to said pin and die assembly.