Hydraulic protection device for presses
OwnerAnatoly Sergeevich Grigorenko, Jury Antonovich Moroz +1inventors
InventorsAnatoly Sergeevich Grigorenko, Jury Antonovich Moroz, Vladimir Vladislavovich Landyshev
Life of this patent
Estimating the term…
Abstract
Hydraulic overload protection device for a press comprises a housing receiving therein a piston defining with this housing a space communicating via a check valve with a supply source and via a relief valve with a drain. This space additionally communicates with the drain via a line including an adjustable relief valve and a device for disconnecting the said space from the drain, when the movable member of the press, carrying a die, has been driven through the maximum length of its stroke. The disclosed protection device offers fine adjustment of the pressing or stamping effort and prolongs the service life of dies.
Claims2
A hydraulic overload protection device for a press, adapted to protect this press from overloads upon the movable member of this press, carrying thereon a die, having been driven through the maximum length of the stroke thereof, comprising:
- a hollow housing;
- a piston accommodated within this hollow housing;
- a space defined within said hollow housing by said piston, communicating via a check valve with a source of working liquid and also communicating via a pressure relief valve with a drain, characterized in that said space is additionally communicated with the drain via a line including an adjustable pressure relief valve and a device for disconnecting the said space from the drain upon the movable member of the press, carrying thereon the die, having been driven through the maximum length of its stroke.
Dependencies are inferred from the claim text.