Crossbeam press multi-hydraulic cushion synchronous control system

Abstract

The invention relates to a crossbeam press multi-hydraulic cushion synchronous control system which comprises a plurality of groups of hydraulic cushions, a hydraulic cushion cylinder and an ejector cylinder, wherein the hydraulic cushions are connected with the hydraulic cushion cylinder and the ejector cylinder, the hydraulic cushion cylinder is connected onto a low-pressure return oil pipe by a hydraulic cushion control valve group which is connected with a control oil pipe, a retreat cavity oil inlet of the ejector cylinder is connected with the hydraulic cushion control valve group and a J-shaped electromagnetic directional valve, an ejector cavity oil way of the ejector cylinder is connected with the low-pressure return oil pipe by a safety overflowing valve, and the crossbeam press multi-hydraulic cushion synchronous control system is characterized in that the ejector cavity oil way of the ejector cylinder is further connected with a one-way valve and a synchronous cylinder which controls the hydraulic cushions to be synchronously ejected and retreated. The crossbeam press multi-hydraulic cushion synchronous control system has the advantages of being capable of ensuring that the multiple hydraulic cushions can be synchronously ejected and retreated, controlling a mold core in a mold to stably work, avoiding blocking of the mold core, improving the press forming precision and pass percent of a car crossbeam, and being convenient to debug and simple to maintain.

Description

technical field [0001] The invention belongs to the technical field of forging machinery manufacturing, and in particular relates to a multi-hydraulic pad synchronous control system of a beam press. Background technique [0002] The automobile chassis is an important automobile component that supports and installs the automobile engine and its components and assemblies, receives the power of the engine, and makes the automobile move to ensure normal driving. At present, the hydraulic presses used in the automobile industry have various forms according to the pressing process requirements, and the hydraulic presses for automobile longitudinal beams can realize the functions of stretching, bending and shaping of U-shaped longitudinal beams. The automobile longitudinal beam pressed by this press is obtained by pressing and bending the longitudinal beam plate after punching with a thickness of 4-12mm, a width of 300-600mm, and a length of 6-12m, and then shaping it. Therefore, t...

AI Technical Summary

Problems solved by technology

This method is difficult to debug, it is difficult to realize simultaneous jacking and retracting of multiple hydraulic cushions, the accuracy is poor, and it needs to be readjusted after a period of use.

In addition, another structure is that each hydraulic pad is equipped with a separate power source, and the flow rate is adjusted through a throttle valve. The effect of synchronous jacking and retreat is not good, and it also needs to be adjusted every once in a while. The technical level is higher, and the effect cannot meet the user's approval

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