JPS6238043B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a 12-high rolling mill.

The above 12-high rolling mill has two intermediate rolls and three support rolls behind each of a pair of work rolls, and conventionally, the four intermediate rolls serve as drive rolls. All support rolls are split rolls to increase rigidity.

For this reason, when performing lateral adjustment (adjustment of the roll position in the roll axis direction) by attaching a taper relief to the intermediate roll, a strong thrust force is required during rolling, which effectively changes the shape of the rolled material during rolling. I couldn't control it. That is, lateral adjustment can only be performed before rolling, and even if the shape of the rolled material is measured, it is not possible to take effective measures to correct the shape.

The present invention has been made in view of the above-mentioned conventional drawbacks, and the upper and lower center support rolls are integrated drive rolls, while the other support rolls are split rolls.
In addition, by forming taper reliefs at opposite ends of the upper and lower intermediate rolls and providing the intermediate rolls so as to be movable in the roll axis direction, lateral adjustment of the intermediate rolls is possible even during rolling,
The objective is to provide a 12-high rolling mill that can quickly and widely modify the shape of rolled materials.

Next, the present invention will be explained with reference to the drawings which are one embodiment.

In the figure, reference numeral 1 indicates a 12-high rolling mill according to the present invention, in which an upper roll housing 4 is provided so as to be slidable using four pillars 3 erected on a lower roll housing 2 as guides. The upper and lower roll groups 5 and 6 are supported by the upper and lower roll housings 4 and 2, and an electric motor 7 for rolling down is provided on the upper roll housing 4, and this electric motor 7 drives a worm 8 and a worm wheel 9. Furthermore, a worm wheel 11 is driven via a shaft 10 and a worm (not shown). A female thread is formed in the center of the worm wheel 11, and the female thread is screwed into a male thread formed at the upper end of the support column 3, and is integrally connected to the worm wheel 11 through a thrust bearing 12 so as to be relatively rotatable. The upper roll housing 4 is raised and lowered.

The upper and lower roll groups 5 and 6 are two intermediate rolls 1 that support work rolls 13 and 14, respectively.
5, 16 and 3 supporting intermediate rolls 15, 16
The upper roll housing 4 is raised and lowered by an electric motor 7 to set a gap between the work rolls 13 and 14. Among the support rolls 17 and 18, the central support rolls 17a and 18a are supported by bearings 19 and 20 at two locations, respectively, and the roll shafts 21 and 22 are coupled to an electric motor (not shown) via coupling rings 23, while rolling The support rolls 17b and 18b on the inlet and outlet sides are each divided roll 24.
is supported by a saddle 25 to increase the rigidity of the roller.

Furthermore, the bearing 20 is fixed on a hydraulic cylinder 26, and by raising and lowering the lower center support roll 18a, the gap between the work rolls 13 and 14 can be finely adjusted, thereby making it possible to control the plate thickness.

Further, a taper relief 27 is formed at the opposite ends of each of the intermediate rolls 15 and 16.
The work rolls 13 and 14 are provided so that they can be adjusted laterally, and the amount of bending of the work rolls 13 and 14 can be finely adjusted to improve the rolling material 28.
It is now possible to control the shape of

As is clear from the above description, according to the present invention, the upper and lower center support rolls are used as drive rolls, and the upper and lower intermediate rolls having tapered reliefs formed at opposite ends thereof are provided movably in the roll axis direction. . In other words, since the intermediate roll is not driven,
It is now possible to operate with a small thrust force during rolling, and the shape of the rolled material can be modified quickly and over a wide range by lateral adjustment during rolling, and the actuating device for lateral adjustment can also be made smaller. ing.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a 12-high rolling mill according to the present invention, and FIGS. 2 and 3 are a sectional view taken along the - line in FIG. 1 and a sectional view taken along the - line. 1... 12-high rolling mill, 13, 14... Work roll, 15, 16... Intermediate roll, 17 (a,
b), 18 (a, b)...Support roll, 27...
Taper relief.

Claims (1)

[Claims] 1 In a 12-high rolling mill that has two intermediate rolls behind each of a pair of work rolls and three support rolls behind the intermediate rolls, the upper and lower center support rolls are integrated drive rolls, while the other support rolls are A 12-high rolling mill characterized in that the rolls are split rolls, tapered reliefs are formed at mutually opposite ends of the upper and lower intermediate rolls, and the intermediate rolls are movable in the axial direction.