Push cylinder type hydraulic screw press

Abstract

The invention provides a push cylinder type hydraulic screw press which comprises a machine frame, wherein a rotatable screw is arranged on the machine frame; the screw and a nut are matched with each other to form a screw pair; the nut is arranged in one sliding block; the screw is also coaxially connected with a flywheel fixedly; the flywheel is connected with a brake; a high-pressure oil cylinder is also arranged on the machine frame; the piston rod of the high-pressure oil cylinder is connected with the sliding block; and the high-pressure oil cylinder is provided with an upper oil port and a lower oil port. The push cylinder type hydraulic screw press adopts a hydraulic energy accumulator for accumulating energy, and has the advantages that mechanical kinetic energy loss caused by attrition slipping of an attrition press is avoided; the defects of complex mechanical structure and high manufacturing cost of a clutch screw press are overcome; the manufacture cost and the use cost are low; the operation is simple; the maintenance is convenient; and the energy saving effect is obvious.

Description

technical field [0001] The invention relates to a screw press, in particular to a hydraulic screw press. Background technique [0002] The screw press relies on the rotation of the flywheel screw to drive the slider to move up and down to achieve forging and return. When working, the flywheel is driven by the motor to accelerate the rotation to store energy. At the same time, the helical pair composed of the screw and the nut pushes the slider to move downward. When the slider touches the workpiece, the flywheel is forced to decelerate, and the stored rotational kinetic energy is transformed into an impact. Yes, the workpiece is hit by the slider to deform it, then the flywheel screw reverses, and the slider returns. [0003] Existing screw presses mainly include double-disc friction screw presses, electric screw presses, and clutch screw presses in three forms. The double-disc friction press drives the flywheel to rotate through the combination of the friction disc and th...

AI Technical Summary

Problems solved by technology

Since the flywheel and the screw are separated, the inertial load of the screw and the driven plate is small, so the clutch screw press can provide twice the effective energy of the existing screw press when the speed drop of the flywheel is 12.5% ​​and the slider passes through the driving stroke of 100mm. , its energy-saving effect is quite obvious, but due to its complex structure, high process requirements, high cost, difficult maintenance and other defects, it is difficult to industrialize large-tonnage presses.

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