Hydraulic pressing device and method for operating the same
AssigneeGustav Klauke GmbH
InventorEgbert Frenken
Life of this patent
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Abstract
The invention relates to a method for operating a hydraulic pressuring device with a stationary part (26) and a moving part (24), whereby the moving past (24) is moved relative to the stationary part (26) until a predetermined pressure is reached. In order to operate a hydraulic pressuring device of this type, for example a cable shoe (connecting) or riveting tool pressing device, whose handling is especially improved, the invention provides that moving part (24) returns automatically and completely to the initial position thereof when a predetermined pressure is reached.
Claims24
Hydraulic pressing device (2) comprising a stationary part (26) and a moving part (24), an inlet valve, an actuatable return valve (1) having an open position and a closed position, a return spring (10), and a hydraulic piston (9), the moving part (24) being moved relative to the stationary part (26) by means of the hydraulic piston (9) acted on by oil under pressure and being movable during a return stroke back into an initial position by means of the return spring (10), wherein the return stroke starts in dependence on a predetermined pressing pressure by actuation of the return valve (1), wherein the automatically actuating return valve (1) is maintained in the open position until the return stroke of the hydraulic piston (9) has been completed by the pressure of the oil during the return stroke.
Dependencies are inferred from the claim text.