Press pump-controlled hydraulic system and its control method

Abstract

The invention relates to a pump control hydraulic system of a press, which includes a power module, a one-way throttling module, a pressure temperature detection module, an oil supplement back pressure module, a safety overflow module, an actuator module, a displacement detection module and various The hydraulic valve block connected between components, the power module is connected to the upper surface of the hydraulic valve block, the one-way throttling module is connected to the left surface of the hydraulic valve block, and the pressure and temperature detection module is connected to the left and right surfaces of the hydraulic valve block. The oil back pressure module is connected to the right surface and the upper surface of the hydraulic valve block, the safety overflow module is connected to the right surface of the hydraulic valve block, the actuator module and the displacement detection module are connected to the rear surface of the hydraulic valve block, and based on this, a a method of control. The invention adopts an integrated non-pipeline connection mode and relies on oil replenishment and back pressure accumulators to improve system integration, reduce energy consumption, solve the problem of unbalanced oil in pump-controlled asymmetric cylinders, and ensure high reliability of the system sex.

Description

technical field [0001] The invention belongs to press technology, and in particular relates to a press pump control hydraulic system and a control method thereof. Background technique [0002] The existing hydraulic control system of the press has two typical hydraulic control systems, one is the valve-controlled hydraulic system of the press, and the other is the pump-controlled hydraulic system of the press. [0003] The valve-controlled hydraulic system of the press requires precise hydraulic servo valves, which have high requirements on the quality of the working medium, so the system itself has poor anti-pollution ability, resulting in inconvenience in later maintenance; its hydraulic power components, actuators, control components, and hydraulic accessories Relying on pipeline connection, so the degree of integration is low, and the installed area is large; the large overflow loss of the valve-controlled hydraulic system itself leads to serious waste of energy and seri...

AI Technical Summary

Problems solved by technology

The invention adopts an integrated non-pipeline connection mode and relies on oil replenishment and back pressure accumulators to improve system integration, reduce energy consumption, solve the problem of unbalanced oil in pump-controlled asymmetric cylinders, and ensure high reliability of the system sex

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