Rolling device and rolling method of short stacking material

Abstract

The invention provides a rolling device and rolling method of a short stacking material. The rolling of the short stacking material can be reliably carried out in order to prevent the reduction of the production efficiency and to prevent the damage caused by the deflector roller of the rolling mill. A front end reel of the mill bar provided with a connection part used to connect a pre-guiding material and a short stacking material is hung on the reeling scroll from the rolling road side, and a rear end reel of the above mentioned mill bar is hung on the above mentioned unreeling scroll from the rolling road side. When the length of the above mentioned of the short stacking material is shorter than the interval of the above mentioned unreeling scroll and the above mentioned reeling scroll, the rolling of the short stacking material can be carried out under the condition of the contact between the working roller and the short stacking material. When the length of the above mentioned short stacking material is longer than the interval of the above mentioned unreeling scroll and the above mentioned reeling scroll, the front end of the above mentioned rolling material is hung on the reeling scroll. After the rear end of the above mentioned rolling material is hung on the unreeling scroll, on one side, the above mentioned deflector roller can be used to support the rolling material, on the other side, the working roller can be used to roll the short stacking material.

Description

technical field [0001] The present invention relates to a rolling device capable of rolling a short-sized rolled material and a rolling method for a short-sized rolled material. Background technique [0002] As is well known, in plate rolling, two-stage, four-stage, six-stage rolling mills, or 12-stage, 20-stage coil rolling mills for plates are used depending on the situation. As rolling mills for plates, there are general 2-stage, 4-stage, and 6-stage rolling mills, and cluster-type multi-stage rolling mills in which intermediate rolls supporting the work rolls and backup rolls supporting the intermediate rolls fan out like bunches of grapes. [0003] An example of a cluster type multistage rolling mill is shown in JP-A-2010-89113. [0004] Then consider using such a multi-stage rolling mill to roll short yards of rolled products. In addition, the "short yard" mentioned here is a typical example where the length (initial length) of the rolled material is shorter than the...

AI Technical Summary

Problems solved by technology

[0012] In order to avoid such damage, it is also possible to take measures such as winding non-woven fabrics on each roller, or hardening the surface of the rollers, but the current situation is that reliable effects cannot be expected.

In addition, it is possible to avoid damage to the rolls by avoiding the connection portion passing through the rolls, but if the connection portion does not pass through the deflection rolls, guide rolls, etc., the non-rolled portion of the rolled material will become large, which will cause a decrease in productivity. a reason for

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