HYDRAULIC DRIVE OF INJECTION MACHINE MOVABLE PLATE, FOR EXAMPLE, OF AUTOMATIC INJECTION MACHINE Russian patent published in 2008 - IPC F15B11/24 F15B11/42 F15B11/44 

FIELD: mechanics.

SUBSTANCE: hydraulic drive is designed to move the injection machine movable plate, for example, of the automatic injection machine. The hydraulic drive incorporates a hydraulic cylinder with the rod and communicating via check valve, with the pressure line communicating with one of inlet channels of three-position hydraulic distributor valve and control slide valve with its outlet channels communicating with the control spaced of the said three-position hydraulic distributor valve communicating, in a neutral position, the hydraulic cylinder spaces with hydraulic discharge line communicating with the second channels of the said three-position distributor valve and slide valve. The latter both valves are incorporated with one circuit. The hydraulic cylinder rod and communicates with the three-position distributor valve via a check valve, with the control space communicating with one of the outlet hydraulic lines of the control slide valve and with one of the control spaces of the three-position hydraulic distributor valve.

EFFECT: higher unification of the hydraulic drive and simpler drive completing.

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