A rolling mill roll changing device and a method for centering the roll changing track

Abstract

The invention discloses a rolling mill roll changing device, comprising a base, a translation table and a PLC. The base is provided with a translation rail for left and right movement of the translation table. The translation table is provided with a first roll changing rail for placing to-be-changed work rolls, and a second roll changing rail for placing new work rolls. A rolling mill is providedwith a third roll changing rail capable of aligning with the first roll changing rail or the second roll changing rail. The translation table is provided with a first sensing block and a second sensing block in sequence from left to right. The base is provided with a first proximity switch, a second proximity switch, a third proximity switch and a fourth proximity switch from left to right in sequence. The first proximity switch, the second proximity switch, the third proximity switch and the fourth proximity switch are electrically connected with the PLC. The invention also discloses a method for alignment of a roll changing rail. The Rolling mill roll changing device and the method for alignment of a roll changing rail can rapidly align the roll changing rail on the translation table and the roll changing rail on the rolling mill, and aligning precision is high.

Description

technical field [0001] The invention relates to the field of strip rolling, in particular to a roll changing device for a rolling mill and a method for centering a roll changing track. Background technique [0002] In the strip rolling process, because the rolling mill is put into use for a long time, the work rolls on it are easy to wear, and when the work rolls are severely worn, it is necessary to replace the work rolls to be replaced with new work rolls. [0003] At present, there are two ways to replace the work rolls of the rolling mill. One way is to use the roll change trolley to take out the work rolls to be replaced, then hoist the new work rolls to the roll change trolley, and then load them into the rolling mill. The roll method needs to hoist the new work roll to the appropriate position of the roll change trolley, so the operation time is longer; the other roll change method is that the roll change trolley is equipped with the work roll to be replaced and the n...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two ways to replace the work rolls of the rolling mill. One way is to use the roll change trolley to take out the work rolls to be replaced, then hoist the new work rolls to the roll change trolley, and then load them into the rolling mill. The roll method needs to hoist the new work roll to the appropriate position of the roll change trolley, so the operation time is longer; the other roll change method is that the roll change trolley is equipped with the work roll to be replaced and the new work roll respectively. There are two types of roll change tracks for rolls. Before roll change, hoist the new work roll to one roll change track of the roll change trolley in advance, and then unload the work roll to be replaced from the rolling mill to another roll change track, and then move The roll changing trolley aligns the roll changing track where the new work roll is located with the roll changing track on the rolling mill, and finally puts the new roll into the rolling mill. This roll changing method also has some problems, such as the roll changing track on the roll changing trolley It is difficult to align with the roll changing track on the rolling mill, and there are large errors in the alignment, so it will also lead to a longer roll changing operation time

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