FIELD: engines and pumps, electrical engineering.
SUBSTANCE: injection assembly incorporates a hollow motor made up of the rotor and fixed part. The hydraulic cylinder has the first cylindrical wall linked to the hollow motor rotor and the second cylindrical wall linked to the hollow motor fixed part. The piston arranged to slide along the cylindrical wall inner surfaces. Note that the piston features the first end face part in contact with the first cylindrical wall and the second end face part in contact with the second cylindrical wall. A set of splines is arranged along the piston central part. A splined insert rigidly linked to the rotor. The channel to feed hydraulic liquid is arranged so that to allow the piston forward motion. The piston, forced by the liquid, slides along the splined insert and rotates, moved by splines, with the hollow motor cut in.
EFFECT: production of compact injection assembly with higher accuracy of screw mounting in its adjustment to ensure high injection capacity.
102 cl, 13 dwg
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