Patent ID: 11951666
Assignee: HUSKY INJECTION MOLDING SYSTEMS LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A pressure control system for an injection molding system, the pressure control system comprising:
a variable displacement pump;
a pump control valve;
a sensor configured to detect a hydraulic pressure within the pump control valve;
a controller configured to operate and control the pump control valve in response to a signal from the sensor;
a pump actuator configured to increase or reduce an output of the variable displacement pump; and
a variable pressure setpoint determined by the controller, wherein the variable pressure setpoint corresponds to a magnitude of the hydraulic pressure within the pump control valve, and wherein the pump control valve is configured to change the variable pressure setpoint based on a flowrate of hydraulic fluid coming out of the pump control valve; and wherein the variable pressure setpoint governs system pressure.