JPS5893505A - 12-stages rolling mill - Google Patents

Abstract

PURPOSE:To permit lateral adjustment of intermediate rolls during rolling by using one body type driving rolls for upper, lower central supporting rolls, and split type rolls for the other supporting rolls, forming tapered relief in the end parts on mutually the opposite sides of upper, lower intermediate rolls and making the same movable in their axial directions. CONSTITUTION:Two pieces of intermediate rolls 15, 16 are provided respectively behind a pair of work rolls 13, 14 of 12-stages rolling mills, and three pieces of supporting rolls 17, 18 are provided behind the rolls 15, 16. The upper, lower central supporting rolls 17a, 18a are supported respectively at two places by means of bearings 19, 20, and roll shafts 21, 22 are connected by means of couplings 23 to electric motor. On the other hand, the other supporting rolls 17b, 18b support respective split rolls 24 by means of saddles 25. Tapered relief 27 is formed in the end prts on mutually the opposite sides of the rolls 15, 16 and the rolls 15, 16 are made movable in their axial direction.

Description

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

The above-mentioned 12-high rolling mill has two intermediate rolls and three support rolls behind each of a pair of work rolls, one of which serves as a drive roll, and the support roll is rigid. In order to increase the efficiency, all of the products are split rolls. ′ −For this reason, lateral adjustment (
When adjusting the roll position in the roll axis direction,
A strong thrust force is required during rolling, and it is virtually impossible to control the shape of the rolled material during rolling. 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-type rolls, and the ends of the upper and lower intermediate rolls are opposite to each other. By forming a taper relief on the part and providing this intermediate roll so that it can move in the roll axis direction, it is possible to make lateral adjustment of the intermediate roll even during rolling, and the shape of the rolled material can be modified quickly and over a wide range.
The purpose is to provide a corrugated rolling mill.

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 5.6 are supported by the upper and lower roll housings 4.2, 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. And 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 the male thread formed at the upper end of the support column 3.
2, an upper roll housing 4 integrally connected to the worm wheel 11 so as to be relatively rotatable is raised and lowered.

The upper and lower roll groups 5 and 6 each include the work roll 1
3, 14 and two intermediate rolls 15.16 and 15.・Three support rolls supporting 16.
18, and by raising and lowering the upper roll housing 4 by the electric motor 7, the work rolls 13 and 14 are
A gap is set between the two. Among the support rolls 17, 18, the central support rolls 17a, 18a are supported by bearings 19, 20 at two locations, respectively, and the roll shafts 21, 22 are coupled to an electric motor (not shown) via a coupling 23. Rolling mill type, exit side support roll 17b
, 18b, each divided roll 24 is supported by a saddle 25 to increase the rigidity of the roller.

Further, the bearing 20 is fixed on a hydraulic cylinder 26, and by raising and lowering the lower central support roll 18a,
Plate thickness can be controlled by finely adjusting the gap between the work rolls 13 and 14.

In addition, taber reliefs 27 are formed at mutually opposite ends of each intermediate roll 15, 16, and are provided so as to be lateral adjustable, so that the amount of bending of the work rolls 13, 14 can be finely adjusted to 28 shapes can be controlled.

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 IJ and IJ-7 formed at mutually opposite ends can be moved in the roll axis direction. It is a provision. In other words, since the intermediate roll is not driven, it can be operated with a small thrust force during rolling, and the shape of the rolled material can be quickly and widely modified by lateral adjustment during rolling, as well as the operation of lateral adjustment. The device also has the advantage of being small in size.

[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 II and nn of FIG. 1, respectively. 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 with a pair of intermediate 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 split rolls. A 12-high rolling mill characterized in that taper reliefs are formed at opposite ends of the frontage rolls, and the intermediate rolls are movable in the axial direction.