Side guide plate centring control device and control method

Abstract

The invention discloses a side guide plate centring control device which comprises a position controller and a position encoder of a side guide plate. The side guide plate centring control device further comprises a pressure protection controller, a protection selector, a pressure sensor and a comparer. The invention further discloses a side guide plate centring control method. Based on side guide short stroke and strip steel deformation pressure protection control and other technologies, protection clamping force is set according to different steel kinds and thicknesses, the protection function is started before strip steel is deformed or a side guide plate is damaged, the side guide plate is completely opened immediately, then a clamping steering solenoid valve coil signal is powered on to continue clamping the strip steel, therefore, through the reciprocating movement of the short stroke of a hydraulic cylinder, the strip steel side loss defect and side guide plate damage can be reduced, the aim of protection is achieved, and the function of beating the strip steel for centring can be achieved.

Description

technical field [0001] The invention relates to side guide plate control technology, more specifically, to a side guide plate centering control device and a control method thereof. Background technique [0002] The existing centering function of the side guide plate is controlled by coded position feedback, and the given value of the clamping stroke of the side guide will add 10% to 15% margin on the basis of the strip width. Such as figure 1 As shown, the position controller generates a side guide clamping set value Pos(ref) according to the strip width and control needs, and the position set value Pos(ref) is set after the position encoder feedback of the side guide travel Subtract the position encoder feedback value Pos(act), and control the output of the reversing valve according to the result ΔPos, thereby controlling the action of the side guide cylinder. The problem with this control method is that it does not consider the pressure on the side guide device. When the...

AI Technical Summary

Problems solved by technology

The problem with this control method is that it does not consider the pressure on the side guide device. When the shape of the strip is not good or there is deviation, the above control has a high risk of damage to the side guide or edge damage of the strip: if If the strip is thicker, the side guide device after clamping will be hit or cut off by the running deviation strip; if the strip is thin or soft, the side guide after clamping will arch the passing strip so that Deformation of one side of strip steel causes new scratches and quality defects

Therefore, the side guide centering device cannot be used to solve the problem of strip deviation when the deviation of the strip is serious or the occasion with high quality requirements, which will lead to the uncontrollable deviation of the strip or the occurrence of scratch defects or overflow edge defects , the final product can only be sold at a reduced price or recoiled, which will have a direct impact on increasing the cost of the enterprise or reducing the profit of the enterprise

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