JPS62244501A - Rolling stand - Google Patents

Abstract

PURPOSE:To improve a shape control characteristic by providing intermediate rolls having curved contours vertically point symmetrically and making combination use of the horizontal deflection adjustment of work rolls, the axial movement adjustment of the intermediate rolls, etc. CONSTITUTION:The upper and lower intermediate rolls 5, 6 are formed with the curved recessing contours 5a, 6a and the projecting contours 5b, 6b continuous therewith and are disposed vertically point symmetrically by displacing the mounting positions 180 deg.. Intermediate roll chocks 3, 4 are made adjustable in movement by means of cylinders. The work rolls 1, 2 are displaced from the axial central plane of the intermediate rolls 5, 6 and are supported by divided supporting rolls 9, 10. The correction at the ends of a rolling material and the overall local correction thereof are thus executed by the axial movement of the intermediate rolls 5, 6, and the bending effect and horizontal deflection effect of the work rolls 1, 2 of the above-mentioned mechanism, by which the shape control characteristic is improved.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention comprises a reinforcing roll, an intermediate roll with a curved profile whose movement can be adjusted in the axial direction, and a work roll whose horizontal deflection can be adjusted. or/and relates to a new rolling stand in which the work rolls are capable of roll bending.

[Conventional technology]

A six-high rolling stand in which a pair of upper and lower intermediate rolls having the same curved profile are moved and adjusted in the axial direction is disclosed in Japanese Patent Laid-Open No. 57-91807.

In this way, forming a curved profile on the intermediate roll and adjusting the movement in the axial direction only has the effect of correcting the quadratic curve component of the sheet crown, and it is not possible to remove higher order curve components or combine It is difficult to remove elongation.

On the other hand, the effect of work roll bending, or intermediate roll bending knobs, is primarily on the sheet edges, but has a higher order curved component, and therefore rolls with the same curved profile as mentioned above. If used in conjunction with adjusting the movement in the axial direction, it becomes possible to remove from the quadratic curve component to the higher order curve component of the plate crown, and shape controllability is dramatically improved.

On the other hand, as a rolling mill that uses small-diameter work rolls to reduce rolling reaction force and rolling torque, and has excellent shape controllability,
The upper and lower work rolls, which are displaced from the axial plane formed by the axes of the upper and lower reinforcing rolls, are each supported by split support rolls via horizontal intermediate rolls, and the support of this split support roll is supported by the contact surface of the support bridge, and the support The position of the contact surface for the body is variable according to the bending line extending symmetrically with respect to the center of the support bridge, and the horizontal deflection of the work roll is adjusted by the mechanism described in (B). , is known as Japanese Patent Publication No. 46-6176.

In this multi-stage rolling stud, the rate at which the horizontal deflection of the work roll is converted into vertical deflection is approximately 1710 to 17
20, and the absolute amount of local deformation that occurs internally in the width direction of the plate is small, so the shape correction effect is sufficiently demonstrated, but the correction amount is necessary to correct the plate end shape and improve edge drop. Quantitatively insufficient.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and solves the problems of the prior art by simple and rational means, and improves the secondary structure of the plate crown by adjusting the axial movement of an intermediate roll having a curved profile. Control the shape of the center of the rolled material by modifying the curved components; control the edges of the rolled material by modifying the higher-order curved components of the plate crown using the roll bending knobs of intermediate rolls and/or work rolls; It is an object of the present invention to provide a rolling stand that can perform fine local corrections of the overall rolled material that cannot be removed by the first two methods through the action of deflection.

[Structure of the invention]

The structure of the present invention that solves the problems of the prior art includes a pair of work rolls and an intermediate roll, respectively, in the vertical direction.

In a multi-stage rolling stand having reinforcing rolls, a pair of upper and lower intermediate rolls have the same curved profile, are installed symmetrically with respect to each other by 180 degrees, and are symmetrically arranged in the axial direction. It is configured to be slidable, and a pair of upper and lower work rolls are arranged on the middle four wheels and the upper and lower work rolls. is displaced from a common axial plane passing perpendicularly through the axes of the lO strong rolls, and the roll cylinder of the work roll is held in the horizontal direction by split support rollers via a horizontal intermediate roll;
The support of the split support roller is supported on the contact surface of the support bridge and is configured to be variable according to a bending line extending symmetrically with respect to the center of the support bridge, and the support body of the split support roller is configured to be variable according to a bending line extending symmetrically with respect to the center of the support bridge, and the support body of the split support roller is configured to be variable according to a bending line extending symmetrically with respect to the center of the support bridge, and The shape of the rolled material is controlled by adjusting the horizontal deflection of the work roll, adjusting the axial movement of the intermediate roll, and using the roll bending action of the work roll and/or the intermediate roll. It is characterized by the following.

〔Example〕

A detailed description of the invention using intermediate roll bending is provided with reference to the drawings.

FIG. 1 is a side view, and FIG. 2 is a front view of the roll arrangement.

FIG. 3 is an enlarged longitudinal sectional front view, and FIG. 4 is a cross-sectional view of the lower roll set.

In FIGS. 2 and 3, small-diameter work rolls 1 and 2 that correspond to each other vertically are supported perpendicularly to intermediate rolls 5°6 disposed above and below that are supported by intermediate roll chocks 3°4. The axes of the work rolls 1 and 2 are displaced from a vertical axis plane passing through the axes of the upper and lower intermediate rolls 5 and 6.

In the direction of this displacement, both work rolls 1, 2 are supported by support rollers 9, 10 divided into a large number of parts via a small-diameter horizontal intermediate roll 7.8. In addition, the work roll 1,
2゜Horizontal intermediate roll 7.8 and split support roller 9.10
are rotatably supported, and the work rolls 1 and 2 are supported on a support rod 11, and each divided support opening-ra 9.
10 is an axle box having a keyed sliding shaft 12.13 at one end]
4.15 is supported.

Each axle box 14 above. Each sliding shaft 12.13 provided in Iri
The outer end faces of the rollers rest against cylinders 10.20 for the split support roller extrusion 17, which are integrated in support bridges 17.18 of the rolling stand housing 16.

21 and 22 are reinforcing rolls supported by reinforcing roll chocks 23 and 24, and the center axes of the reinforcing rolls 21 and 22 are on a vertical axis plane passing through the axes of the intermediate rolls 5 and 6.

In the figure, 25 is a reduction cylinder, and 26 and 27 are reinforcing roll balance cylinders, which are used when replacing work rolls and intermediate rolls. 28.29.30.31 are intermediate roll bending cylinders.

In addition, 32.33 in the figure is a mounting bracket for the split support roller axle box, 34.35.43 is a projector block, and 36 is
Pass line adjustment device used when replacing work rolls and intermediate rolls, 37 and 38 are claws for supporting work rolls.

39, 40, 41, and 42 are chocks outside the intermediate roll.

Furthermore, in the present invention, the upper and lower intermediate rolls 5 and 6 have a curved concave contour 5a, as is clear from FIGS.
6a and convex contours 5b and 13b connected thereto, and the mounting positions of the rain intermediate rolls 5 and 6 are arranged symmetrically with respect to the upper and lower points displaced by 1800 degrees from each other. In addition, in order to adjust the axial movement of the intermediate rolls 5 and 6 in mutually opposite directions, the intermediate roll inner chocks 3 and 4 are slid to the intermediate roll outer chocks 39, 40, 41, and 42. A cylinder (not shown) is attached to the chuck 3.4 in the intermediate roll to adjust the movement.

Note that it is also easily possible to add work roll bending.

〔effect〕

Since the present invention is configured as described above, the following effects can be obtained.

(a) By adjusting the axial movement of an intermediate roll having a curved profile, the plate shape can be effectively controlled over the entire width of the rolled material.

(b) The shape of the end plate of the rolled material can be corrected and controlled by the roll bedding action of the intermediate roll and the tall work roll.

(c) Due to the horizontal deflection of the work rolls, fine local corrections can be effectively made over the entire rolled material.

(d) A rolling stand with a very wide range of shape control properties due to the organic combination of the axial shift of the intermediate roll with a curved profile, the horizontal deflection effect of the work roll, and the roll bedding effect of the intermediate roll and/or the work roll. will provide.

(c) It is easy to correct the plate shape during operation.

(f) A rolling stud having small diameter work rolls and capable of stable operation can be provided.

[Brief explanation of drawings]

FIG. 1 is a side view, and FIG. 2 is a front view of the roll arrangement. FIG. 3 is an enlarged vertical cross-sectional view, and FIG. 4 is a cross-sectional view of the lower roll set. 1.2 Work roll, 3.4 Chock in intermediate roll. 5.6 Intermediate opening h g 511. (ia-1!-',
1 contour, 5b, 6h convex contour, 7.8 horizontal intermediate rule, 9.10 split roller. +] Support・＼・んl；、Ifl Rolling stand housing? 17.18 Support bridge, 19.20
Cylinder, 21.22 Reinforcement roll, 2e, 27-
? In +f+low-nod balance sirileg, 28.29
．． 30.31 Intermediate Roll Benzo Bean Ring. Figure 1 Figure 2

Claims (1)

[Scope of Claims] (a) A multi-stage rolling stand having a pair of work rolls, an intermediate roll, and a reinforcing roll in the vertical direction, (b) a pair of upper and lower intermediate rolls having the same curved outline; In addition, the mounting positions are shifted by 180 degrees to each other so that the upper and lower points are symmetrical, and the upper and lower work rolls are configured to be slidable in the axial direction. is displaced from a common axial plane passing vertically through the axis of the work roll, and the roll cylinder of the work roll is held in the horizontal direction by a split support roller via a horizontal intermediate roll, and the support of the split support roller is supported on the contact surface of the support bridge and is configured to be variable according to a bending line extending symmetrically with respect to the center of the support bridge, (d) capable of roll bending the intermediate roll and/or the work roll. The shape of the rolled material is controlled by adjusting the horizontal deflection of the work roll, adjusting the axial movement of the intermediate roll, and using the roll bending action of the work roll and/or the intermediate roll. Features a rolling stand.