Method of managing cylinders in a rolling facility and installation for implementing same
A technology for rolling mills and rolls is applied in the field of replacing rolling mill rolls, which can solve problems such as large investment costs and achieve the effect of large operation adaptability.
Inactive Publication Date: 2008-12-31
SIEMENS VAI METALS TECHNOLOGIES GMBH & CO
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- Description
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- Application Information
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Problems solved by technology
Such a large number of roll chocks represents a large investment cost for devices according to the prior art
Method used
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Embodiment Construction
[0062] figure 1 and 2 represent a preferred embodiment of the roll changing device according to the invention of a rolling mill installation.
[0063] refer to figure 1 , a metal sheet M to be rolled moves along the rolling axis A in the moving direction indicated by the arrow F1. M enters in figure 1 The rolling mill 2 on the right comes, for example, from a coil arranged upstream of the rolling mill 2, from figure 1 Going out on the left, for example at the exit it is coiled on the shaft of a coiler arranged downstream of the rolling mill 2 .
[0064] In the illustrated example, the rolling mill 2 consists of three rolling stands 10a, 10b, and 10c, all of which are identical to each other. The three rolling mill stands are arranged in series along the rolling axis A with an interval e.
[0065] In general, each rolling mill stand 10 comprises a stand made of two columns 11 and 12, connected together by a connecting beam 13, between which the sheet metal M to be rolled p...
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The invention relates to a method for the in-line replacement of cylinders in a rolling mill, consisting in: moving a carriage close to a cage; actuating displacement means with which the carriage is equipped such as to extract the used chock-fitted cylinders in order to position same on a replacement chassis of the carriage; moving the carriage away from the cage; moving a shuttle device, which is provided with a first empty exchange chassis and a second exchange chassis bearing new chockless cylinders, to a first position in which the first exchange chassis is aligned with the replacement chassis of the carriage; actuating the displacement means of the carriage in order to transfer the used chock-fitted cylinders of the replacement chassis to the first exchange chassis; aligning the first exchange chassis of the shuttle device with a chock extraction device in order to detach the chocks from the used cylinders; aligning the two exchange chassis of the shuttle device with the chock extraction device in order to couple the chocks to the new cylinders positioned in the second exchange chassis; moving the shuttle device to a second position in which the second exchange chassis is aligned with the replacement chassis of the carriage; actuating the displacement means of the carriage in order to slide the new fitted cylinders from the second exchange chassis to the replacement chassis; moving the carriage forward; and actuating the cylinder displacement means in order to insert new fitted cylinders from the replacement chassis in the associated cage.
Description
technical field [0001] The invention relates to the field of methods and devices for changing rolls of a rolling mill. Background technique [0002] In the operation of rolling mills, the aging and deterioration of the work rolls in contact with the rolled product, or the aging of other rolls and intermediate rolls, or also, though less significant, the aging of the spare rolls can lead to the production of defective rolled products or the risk of injuring the roll itself. [0003] Also, when switching production types, it may be necessary to exchange a pair of rolls with another pair of rolls with different roughness or different hardness. [0004] This is why rolling mill installations often have to be stopped for changing one or more pairs of rolls. In general, in the following, reference will be made to the replacement of worn rolls with new rolls, taking into account not only wear but also other reasons that prompt the replacement of rolls. [0005] Each end of a rol...
Claims
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IPC IPC(8): B21B31/10
CPCB21B31/10B21B31/103
Inventor B·罗西格纽克斯
Owner SIEMENS VAI METALS TECHNOLOGIES GMBH & CO