Hot-Rolled Coiler Side Guide Control Using Spark Recognition
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Solution Overview
Problem
Existing coiling equipment for hot rolled strips faces challenges in maintaining symmetrical and moderate pressure on side guides, leading to edge damage, jamming, wear, and coil misalignment due to inadequate control of side guide opening, which indirect control methods fail to address effectively.
Innovation Solution
A control method for hot mill coiler side guides based on spark recognition, using an industrial camera to analyze sparks from friction and adjust side guide openings dynamically, employing position and pressure control methods to maintain the strip's centerline and reduce wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controlled opening of side guides is too small, then the strip is prevented from deviating, but serious strip edge damage or steel jamming occurs
Solution Approach 1:
The side guide opening is dynamically adjusted during the coiling process based on real-time strip position detection. The system transitions from static preset openings to dynamic adaptive control, allowing the opening to vary according to actual strip conditions while maintaining reliable positioning and preventing edge damage
Solution Approach 2:
A feedback control system using laser detectors and industrial cameras continuously monitors strip position and provides real-time information to the control system. This feedback enables automatic adjustment of side guide openings to maintain optimal positioning without causing edge damage or jamming
2Reliability
If the controlled opening of side guides is too small, then strip positioning is improved, but localized wear of side guides occurs shortening service cycle
Solution Approach 1:
The side guide opening is dynamically adjusted during the coiling process based on real-time strip position detection. The system transitions from static preset openings to dynamic adaptive control, allowing the opening to vary according to actual strip conditions while maintaining reliable positioning and preventing edge damage
Solution Approach 2:
The control system changes the opening parameter of side guides dynamically during operation. By adjusting the opening size based on real-time feedback, the system maintains optimal positioning accuracy while reducing excessive contact pressure that causes localized wear, thereby extending side guide service life
3Duration of action of stationary object
If the controlled opening of side guides is too large, then wear is reduced, but coil towers and coil edge misalignment occur
Solution Approach 1:
The side guide opening is dynamically adjusted during the coiling process based on real-time strip position detection. The system transitions from static preset openings to dynamic adaptive control, allowing the opening to vary according to actual strip conditions while maintaining reliable positioning and preventing edge damage
Solution Approach 2:
A feedback control system using laser detectors and industrial cameras continuously monitors strip position and provides real-time information to the control system. This feedback enables automatic adjustment of side guide openings to maintain optimal positioning without causing edge damage or jamming
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method effectively keeps the hot rolled strip centered, reduces side guide wear, and prevents coil defects by dynamically adjusting side guide positions and pressures based on real-time spark analysis, ensuring optimal coiling quality.
Implementation Method 1
the sparks come from friction between the unilateral side guide and the hot rolled strip
Data Source
Figure 1~2
Figure 3
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AI summary
The present invention discloses a control method of hot mill coiler side guides based on spark recognition, where the side guides are adjusted according to the width of sparks from the friction between the hot rolled strip (20) and the side guides (11). An industrial camera (9) is provided obliquely above the side guides (11), and a detection system implements a real-time analysis on the images taken by the industrial camera and determines the magnitude of sparks generated on either side of the side guides according to the spark width. For each unilateral side guide, it is adjusted according to the spark width MS corresponding to that side guide (11). For said unilateral side guide (11), the deviation of the single-side spark width ΔMS is obtained according to ΔMS = MS -Maim. The position adjustment magnitude ΔWS of the unilateral side guide (11) can be obtained according to formula (I). And the pressure adjustment magnitude ΔPS of the unilateral side guide (11) can be obtained according to formula (II). This method allows the hot rolled strip (20) always in the relative center of the steel coil, reduces the wear of the side guides (11), avoids various defects of the steel coil, and makes the steel coil in good shape.