Hydraulic ejector operating mechanism
AssigneeMaschinenfabrik and Giesserei Netstal AG
InventorEdwin Ruegg
Life of this patent
Estimating the term…
Abstract
The ejector operating mechanism includes an ejector cylinder and an ejector piston, with the ejector piston extending through an adjusting bush and being fixedly connected thereto. An internally threaded sleeve is mounted in the cylinder for movement axially thereof while being fixed against rotation, and abutments engage with the sleeve to limit the axial movement thereof. The adjusting bush is threadedly engaged in this sleeve whereby the axial position of the sleeve relative to the bush can be varied by rotating the ejector piston, to determine the stroke of the ejector piston.
Claims7
In a hydraulic operating mechanism operably connected to a mold for ejecting a workpiece from a mold, including an ejector cylinder, the improvement comprising, in combination, an ejector piston movable axially of said cylinder;
- an externally threaded adjusting bush;
- said piston extending through said adjusting bush and being fixedly connected thereto;
- an internally threaded sleeve mounted in said cylinder for movement axially thereof;
- means fixing said internally threaded sleeve against rotation;
- and abutment means operable to limit axial movement of said sleeve;
- said adjusting bush being threadedly engaged in said sleeve, whereby the axial position of said sleeve relative to said adjusting bush can be varied by rotating said ejector piston to determine the stroke of said ejector piston.
In a hydraulic operating mechanism operably connected to a mold for ejecting a workpiece from a mold, including an ejector cylinder, the improvement comprising, in combination, an ejector piston movable axially of said cylinder;
- an externally threaded adjusting bush;
- said piston extending through said adjusting bush and being fixedly connected thereto;
- an internally threaded sleeve mounted in said cylinder for movement axially thereof;
- means fixing said internally threaded sleeve against rotation;
- abutment means operable to limit axial movement of said sleeve;
- said adjusting bush being threadedly engaged in said sleeve, whereby the axial position of said sleeve relative to said adjusting bush can be varied by rotating said ejector piston to determine the stroke of said ejector piston;
- and a stuffing box secured on said cylinder with the interposition of a taperes sleeve;
- said ejector piston having a diametrically enlarged head at an operating end;
- said stuffing box being engageable with said piston head to limit the stroke of said ejector piston in one direction, and said tapered sleeve being engageable with said internally threaded sleeve to limit the stroke of the ejector piston in the opposite direction.
Dependencies are inferred from the claim text.