Slide block quick return hydraulic system of quick forging hydraulic press

By using the combination of hydraulic proportional servo valve and energy accumulator in the hydraulic press, the problem of long reaction beat during rapid return of the hydraulic press is solved, high-precision position control and fast return of the hydraulic press are achieved, and the controllability and forging frequency of the hydraulic press are improved.

CN222679446UActive Publication Date: 2025-03-28HUZHOU MACHINE TOOL WORKS
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Patent Information

Application Number
CN202421400924.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-03-28
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

During the rapid return journey, the reaction beat of existing hydraulic presses is long, resulting in low forging frequency, unable to quickly cut off or connect oil circuits, and low position control accuracy.

Method used

A slider fast return hydraulic system for fast forging hydraulic press is designed, using a combination of a hydraulic-controlled proportional servo valve and a first accumulator. Through the control of the hydraulic-controlled proportional servo valve, the oil circuit can be quickly cut off or connected, and the second accumulator can provide backhaul power to achieve a fast return.

Benefits of technology

It improves the controllability of the hydraulic press, realizes rapid cutting or connecting the oil circuit, accurately controls the hydraulic press action, improves position control accuracy, and enhances the return speed and response frequency during fast forging.

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Abstract

The utility model discloses a sliding block quick return hydraulic system of a quick forging hydraulic press, which comprises a hydraulic power mechanism, a sliding block, a main oil cylinder and a jacking cylinder, and is characterized in that the main oil cylinder is provided with a pressing oil way and a return oil way. And the controllability of the hydraulic machine is better. Due to the fact that the hydraulic control proportional servo valve is high in reaction speed, the hydraulic control proportional servo valve is controlled to be switched on and switched off, an oil way can be rapidly switched off or switched on, actions of the hydraulic machine can be accurately controlled, moving parts of the hydraulic machine can accurately stop at needed positions for multiple times, and it can be guaranteed that the position control precision is high when the hydraulic machine conducts fast forging. And 2, the second energy accumulator is used as a spring, so that the oil in the energy accumulator does not need to be supplemented for multiple times, the energy accumulator only needs to be filled with the oil once, the oil can be discharged to the return stroke oil way for multiple times under the condition of not considering leakage, and the quick return stroke of the quick forging hydraulic press is realized.
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