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Method for adjusting tail fixing angle of sheet coiling box

An angle adjustment, plate coil box technology, applied in image data processing, instruments, metal rolling, etc., can solve the hysteresis of adjustment, the timeliness and accuracy of on-site abnormal observation, and achieve the level of automation of production lines and production efficiency, improve stability, and avoid the risk of unwinding

Active Publication Date: 2020-10-09
河钢乐亭钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some limitations in this adjustment, such as the lag of adjustment and the timeliness and accuracy of observing abnormal problems on site.

Method used

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  • Method for adjusting tail fixing angle of sheet coiling box
  • Method for adjusting tail fixing angle of sheet coiling box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A method for adjusting the angle of the coil box tail, comprising the following steps:

[0043] 1. The coil box tailing sequence is over, and the coil box uncoiling sequence is suspended;

[0044] 2. The infrared camera detects the positive shape of the side of the steel coil, the system recognizes the shape of the steel coil, and calculates the actual tail angle value θ through graphic fitting 实际 =142°, where θ 实际 It is the angle of the circle center corresponding to the top of the steel coil cross center line to the top of the steel coil tail.

[0045] 3. The system calculates δθ, δθ=θ 实际 -θ 目标 =7°, where θ 目标 =135°, the allowable deviation range is ±15°.

[0046]4. At this time, δθ meets the requirements of [-15°, +15°].

[0047] 5. The coil box executes the unwinding sequence.

Embodiment 2

[0049] A method for adjusting the angle of the coil box tail, comprising the following steps:

[0050] 1. The coil box tailing sequence is over, and the coil box uncoiling sequence is suspended;

[0051] 2. The infrared camera detects the positive shape of the side of the steel coil, the system recognizes the shape of the steel coil, and calculates the actual tail angle value θ through graphic fitting 实际 =160°, where θ 实际 It is the angle of the circle center corresponding to the top of the steel coil cross center line to the top of the steel coil tail.

[0052] 3. The system calculates δθ, δθ=θ 实际 -θ 目标 =25°, where θ 目标 =135°, the allowable deviation range is ±15°.

[0053] 4. At this time, when δθ>+15°, the 1# cradle roller needs to drive the steel coil to rotate forward for a certain arc length l, and the central angle corresponding to the arc length l is θ=|θ 实际 -θ 目标 |=25°, the current calculated coil diameter obtained from the system is 1550mm, according to l=θπd / 3...

Embodiment 3

[0057] A method for adjusting the angle of the coil box tail, comprising the following steps:

[0058] 1. The coil box tailing sequence is over, and the coil box uncoiling sequence is suspended;

[0059] 2. The infrared camera detects the positive shape of the side of the steel coil, the system recognizes the shape of the steel coil, and calculates the actual tail angle value θ through graphic fitting 实际 =90°, where θ 实际 It is the angle of the circle center corresponding to the top of the steel coil cross center line to the top of the steel coil tail.

[0060] 3. The system calculates δθ, δθ=θ 实际 -θ 目标 =-45°, where θ 目标 =135°, the allowable deviation range is ±15°.

[0061] 4. At this time, when δθ实际 -θ 目标 |=45°, the current calculation roll diameter obtained from the system is 1620mm, according to l=θπd / 360, the adjustment rotation distance of 1# cradle roller can be calculated l=635.85mm, at this time, the negative rotation speed of 1# cradle roller is υ=- 0.5m / s.

...

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Abstract

The invention relates to a method for adjusting the tail fixing angle of a sheet coiling box, and belongs to the technical field of hot rolling. The technical scheme is: an infrared camera detects a positive shape of the side edge of a steel coil, a system recognizes the shape of the steel coil, and at the time, a 1# cradle roller drives the steel coil to rotate in a negative direction for a certain arc length; and after the 1# cradle roller is adjusted completely, the infrared camera re-detects the positive shape of the side edge of the steel coil, and an adjusted tail fixing angle value is recalculated through graph fitting to ensure that the steel coil can be uncoiled normally within the adjusted tail fixing angle range after steel coil adjustment. The method has the beneficial effectsthat by automatically correcting the steel coil tail fixing angle of the sheet coiling box, the uncoiling risk caused by the too high or too low tail fixing angle can be effectively avoided, the smooth performing of the steel coil uncoiling timing sequence of the sheet coiling box is ensured, the stability of the sheet coiling box operation is effectively improved, and the improvement of the automation level and production efficiency of a production line is realized.

Description

technical field [0001] The invention relates to a method for adjusting the tail angle of a coil box, which belongs to the technical field of hot rolling. Background technique [0002] In hot rolling mills, coil box is a common equipment. The intermediate billet is sent to the finishing mill through coil box forming and uncoiling process. The coil box has a good effect in reducing the temperature difference between the transverse direction and the head and tail of the intermediate billet, and removing the surface oxide scale. First of all, the intermediate blank needs to go through the process of coiling and uncoiling in the process of passing through the coil box. The fixed tail is the last link of the coil box coiling sequence. Tail control, after the tail is fixed, the tail of the steel coil needs to stop within a certain height range to ensure the smooth progress of the subsequent uncoiling sequence. However, affected by the material tracking accuracy of the intermediat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B15/00B21B38/02G06T7/70
CPCB21B15/00B21B38/02G06T7/70B21B2015/0057B21B2015/0064
Inventor 刘志卫李中华李杨吕耀强高燕马永乐
Owner 河钢乐亭钢铁有限公司