A synchronous control system of electro-hydraulic servo servo for slider balance 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 balance synchronization control device for the slider of the bending machine in the prior art mainly adopts the synchronous control of the mechanical torsion axis, or adopts the electro-hydraulic servo control. At present, the mechanical torsion axis synchronization control device used in the balance synchronization control device of the bending machine has poor anti-eccentric load capacity and low control accuracy, and is only suitable for hydraulic bending machines with small and medium loads, and the mechanical torsion axis is synchronously bent. When bending wide plates by machine, the bending angle and bending straightness cannot achieve good results; the electro-hydraulic servo control device has strong eccentric load resistance and hig...

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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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