Sliding block balance electro-hydraulic servo synchronous control system of bending machine

Abstract

The invention discloses a sliding block balance electro-hydraulic servo synchronous control system of a bending machine. An oil tank is connected with a filter; the filter is connected with a quantitative hydraulic pump; the shaft end of the quantitative hydraulic pump is connected with a motor; the pump port of the quantitative hydraulic pump is connected with an inlet pipe of a diverter valve; and the system further comprises two electromagnetic speed regulating valves connected with two oil outlets of the diverter valve, first and second flow meters mounted on two branch oil pipes, two electromagnetic reversing valves mounted on two branches, hydraulic cylinders mounted at the two sides of the upper side of a sliding block, grating ruler displacement sensors arranged at the two sides of the sliding block, a programmable logic controller PLC with a PID adjusting function, a power supply and the like. The system is reasonable in design and simple in assembly and regulation, can realize synchronous vertical movement of the two ends of the sliding block, is excellent in balance, and has the characteristics of strong unbalance loading resistance and high control precision.

Description

technical field [0001] The invention relates to the technical field of bending machines, in particular to a sliding block balance electro-hydraulic servo synchronous control system of a bending machine. Background technique [0002] The prior art slider balance synchronous control device of bending machine mainly adopts mechanical torsion axis synchronous control, or adopts electro-hydraulic servo control. At present, the mechanical torsion axis synchronous control device used in the balance synchronous control device of the bending machine slider has poor anti-eccentric load capability and low control accuracy, and is only suitable for hydraulic bending machines with small and medium loads, and the mechanical torsion axis synchronous bending When machine bending wide plates, the bending angle and bending straightness cannot achieve good results; the electro-hydraulic servo control device has strong anti-eccentric load capability and high control accuracy, but due to the use...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electro-hydraulic servo synchronous control system for the slider balance of a bending machine, so as to solve the anti-eccentric load capability of the mechanical torsion axis synchronous control in the existing hydraulic bending machine slider balance synchronous control device Poor, low control accuracy, and the problems of complex structure and high manufacturing cost in general electro-hydraulic servo control

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