Hydraulic screwup control device and method of skin-pass mill

Abstract

The invention provides a control device and method for hydraulic pressure on a skin pass machine. The control device is composed of a hydraulic pump station and a hydraulic control valve table; the hydraulic pump station is equipped with 2 high-pressure pumps and 3 medium-pressure pumps; the high-pressure pump and the medium-pressure pump The inlet side is connected to the suction pipe in series through a stop valve and damping throat, and the outlet side is equipped with a check valve, overflow valve, filter, stop valve and pressure switch. The hydraulic control valve table includes a dynamic control adjustment circuit for the upper cylinder, a quick opening or closing control circuit for the upper cylinder, and a rod cavity control circuit for the upper cylinder. The high-pressure oil pipeline of the hydraulic control valve table is connected to the oil circuit of the high-pressure pump station to form a dynamic control adjustment of the upper cylinder; the medium-pressure oil pipeline of the hydraulic control valve table to quickly open and quickly close the circuit is connected to the medium-pressure pump station to form a pressure upper cylinder Quick action. The invention can save a hydraulic pump, correspondingly reduce the working energy consumption of the hydraulic pump and related hydraulic components, and reduce the consumption of spare parts and the operation cost of the skin-passing machine.

Description

technical field [0001] The invention belongs to the technical field of cold rolling process equipment, and in particular relates to a hydraulic pressing control device and a control method for a cold rolling mill. Background technique [0002] The main function of the cold rolling mill is to realize the strip shape and performance control, which is an important link in the strip production process. The hydraulic pressing control device of the skin pass mill is an important part of the work of the skin pass mill, and its working performance has a great influence on the production process of the strip steel. The design of the hydraulic pressure control device of the cold calendering machine is relatively complicated. The hydraulic pressure control device is controlled by a hydraulic pump in a pump station. When the pressure cylinder is quickly opened or closed, the use of low pressure and large flow can meet the requirements. During the production process The medium-pressure ...

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Problems solved by technology

The design of the hydraulic pressure control device of the cold calendering machine is relatively complicated. The hydraulic pressure control device is controlled by a hydraulic pump in a pump station. When the pressure cylinder is quickly opened or closed, the use of low pressure and large flow can meet the requirements. During the production process The medium-pressure upper cylinder uses high pressure and small flow rate. Because it is controlled by a high-pressure pump station, unnecessary energy waste is caused by the pump station during work.

And due to the complicated design of the hydraulic pressure control device, the system design cost is high

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