Near-control zero-adjustment method of roll gap of straightening machine in uncoiling area of hot rolling and flattening line and system thereof

Abstract

The invention discloses a near-control zero-adjustment method of a roll gap of a straightening machine in an uncoiling area of a hot rolling and flattening line and a system thereof. The method comprises the following steps: (1), inputting a thickness value of a sample rod; (2), saving as a roll gap zero clearing value; (3), starting a zero adjustment button; (4), saving as a zero adjustment mode; (5), starting zero adjustment monitoring; (6), selecting a zero adjustment mode; (7), starting a straightening machine working mode; (8), setting the roll gap to be a zero adjustment setting value; (9), starting a roll gap adjuster; (10), driving an oil cylinder of the straightening machine to be pressed down; (11), enabling an actual roll gap value of a roll gap closed-loop controller to be equal to the sum of a pressed actual roll gap value and oil cylinder position offset; (12), enabling the pressure of the oil cylinder of the straightening machine to reach the zero adjustment setting value; and (13), enabling the pressed actual roll gap value to be equal to the roll gap zero clearing value. According to the near-control zero-adjustment method applied to the roll gap of the straightening machine in the uncoiling area of the hot rolling and flattening line and the system thereof, the defects that the size is large, the sight is shielded, the wiring project is large, the input / output module cost is high and the operation interface cannot be changed in a fixed field near-control operation box of the existing flattening line uncoiling area are overcome.

Description

technical field [0001] The invention relates to a zero-adjustment technology for a roll gap of a straightener in the uncoiling area of ​​a hot-rolled leveling line, and more specifically, to a near-control zero-adjustment method and system for a roll gap of a leveler in the uncoiling area of ​​a hot-rolled leveling line. Background technique [0002] In iron and steel enterprises at home and abroad, the uncoiling area of ​​the leveling line is mainly composed of feeding trolleys, height alignment equipment, support arms, uncoilers, deep bending rolls, openers, entrance pinch rolls, straightening machines and other equipment. The purpose is to Put the steel coil on the feeding trolley on the uncoiler, and then use the opening device to pass the strip head into the entrance pinch roller and straightener to complete the opening strip threading action. With the improvement of automation and intelligent control technology, the feeding and threading control in the uncoiling area h...

AI Technical Summary

Problems solved by technology

[0005] 1) The volume of the operation box is large, the equipment of the automatic operation line is compact, the layout of the operation box is relatively difficult, and it is easy to block the sight of the operators in the main control room;

[0006] 2) There are many operation buttons and switches on the operation box, the amount of cables is relatively large, and the engineering volume of wiring is correspondingly high;

[0007] 3) There are many IO modules in the PLC, and the operation buttons of the close control operation box of the traditional operation line occupy about 1 / 3 of the IO points of the PLC;

[0008] 4) Pay attention to the weak status display of manual operation. If a more complete status display is required, an operation panel such as OP needs to be added, which will increase the cost and increase the volume of the operation box;

[0009] 5) It is almost impossible to expand the function. Once the design, manufacture and installation of the remote control operation box are completed, it needs to be replaced if it needs to be expanded.

[0013] 1) Poor precision of zero adjustment: During traditional zero adjustment operation, the zero adjustment of the roll gap is monitored by the position of the oil cylinder, and the operator needs to manually press down the roll gap of the leveler. The zero-adjustment rod is damaged (such as: deformation, crushing);

[0014] 2) The zero-adjustment operation requires high requirements and the process is cumbersome: in the traditional zero-adjustment operation, the operator is at a fixed operating position on site, and has to manually operate the button and observe the actual roll gap of the straightening machine, which cannot realize the effective zero-adjustment process. Monitoring and real-time intervention;

[0015] 3) Low efficiency of zero-adjustment operation: During traditional zero-adjustment operation, the roll gap value of the straightener needs to be manually measured and confirmed by the operator on site with a feeler gauge multiple times, which is not only dangerous, but also has low efficiency of zero-adjustment operation;

[0016] 4) High intensity of zero-adjustment operation: During traditional zero-adjustment operations, the operator needs to program the buttons to adjust the position of the roll gap of the straightener, and use a feeler gauge to manually measure and confirm multiple times on site; when manually measuring the roll gap, it is necessary to Measure the roll gap data of four points at the entrance and exit of the working side of the straightener, and the entrance and exit of the transmission side, and operate the button to adjust the roll gap data of the four points until the roll gap data of the four points meet the benchmark requirements, so The work intensity of the zero adjustment operation process of the straightening machine is relatively high

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