Injection molding system having a digital displacement pump
AssigneeHusky Injection Molding Systems Ltd.
InventorsSrdjan Mucibabic, Max Changchun Huang
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Abstract
Injection molding system (20, 220, 320, 420) having hydraulic circuit (50, 250, 350, 450) for motivating hydraulic actuator (36, 38) comprising: pump motor (52); and digital displacement pump (54, 354A, 354B, 454A, 454B) having: piston assemblies (102A, 102B, 102C, 102D) actuatable by pump motor (52), piston assembly including: pair of inlet and outlets operable to be individually opened and closed at selective rate independently of actuation of each piston assembly; at least one hydraulic actuator (36, 38) operably coupled on each of rod side (64, 66) and cylinder side (58, 74) to first subset of the plurality of piston assemblies (102B, 102D) and second subset of the plurality of piston assemblies (102A, 102C), respectively.
Claims19
An injection molding system (20, 220, 320, 420) having a hydraulic circuit (50, 250, 350, 450) for motivating at least one hydraulic actuator (36, 38), the injection molding system (20, 220, 320, 420) comprising:
- a pump motor (52);
- and
- at least one digital displacement pump (54, 354A, 354B, 454A, 454B), the at least one digital displacement pump (54, 354A, 354B, 454A, 454B) having:
- a plurality of piston assemblies (102A, 102B, 102C, 102D) being actuatable by the pump motor (52), each piston assembly of the plurality of piston assemblies (102A, 102B, 102C, 102D) including:
- a pair of inlet and outlets (108A and 112A, 108B and 112B, 108C and 112C, 108D and 112D) that are operable to be individually opened and closed at a selective rate independently of actuation of the each piston assembly of the plurality of piston assemblies (102A, 102B, 102C, 102D);
- the at least one hydraulic actuator (36, 38) being operably coupled on each of a rod side (64, 66) and a cylinder side (58, 74) to a first subset of the plurality of piston assemblies (102B, 102D) and a second subset of the plurality of piston assemblies (102A, 102C), respectively.
Dependencies are inferred from the claim text.