JPH0584402U - Rolling stand - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a rolling stand in which central shape control of rolled material, edge shape control of rolled material, and general, local modification of the quarter portion can be reasonably performed. Especially. [Structure] The contours 5a, 5b, 6a, 6b are controlled by the axial movement of the intermediate rolls 5, 6 to control the shape of the central portion of the rolled material, and the rolled material is produced by the roll bending action of the intermediate rolls 5, 6 and the small diameter work rolls 1, 2. Due to the shape control of the end portions and the horizontal bending action of the small-diameter work rolls 1 and 2, local correction of the rolled material that cannot be controlled by the former two is performed, while the horizontal movement blocks 9 and 10 and the support rollers 25 and 26 are It is characterized in that excellent plate shape control is performed by adjusting the relative positional relationship and the roll bending force of the small diameter work rolls 1, 2.

Description

[Detailed description of the device]       [0001]     [Industrial applications]   The present invention relates to an improvement of a rolling stand.       [0002]     [Prior art and its problems]   As a pair of upper and lower intermediate rolls, axially rolls with the same curved uneven profile A six-high rolling stand that can be moved and adjusted in the direction is disclosed in Japanese Patent Laid-Open No. 57-91807. Has been done. In this way, a curved uneven contour is formed on the intermediate roll, and it moves in the axial direction. The rolling mill, which is only adjusted, cannot correct the quadratic curve component of the plate crown. , It is difficult to remove high-order curve components or composite elongation.   On the other hand, the effect of work roll bending or intermediate roll bending is Although it is mainly for the plate edge, it has a higher-order curve component and And axially moving and adjusting the roll having the same curved uneven profile as described above. When used in combination with, it is possible to remove up to the quadratic curve of the plate crown. It dramatically improves your sex.   Also, like other conventional rolling stands, simply follow the rolling direction and simply move the work roll. With a structure that prevents the work roll from bending by shifting horizontally, the work roll diameter is extremely small. If the diameter is small, there is a problem such as vibration, which makes it unusable.       [0003]   As means for solving such a problem, it is disclosed in Japanese Patent Publication No. 46-6176. Una multiple roll stand has been proposed. This is the upper and lower work roll body length The side support device is installed from one direction in the horizontal direction of The stand has an economic problem that the initial cost increases drastically, and the structure Is complicated and difficult to maintain, especially when using work rolls with widely different diameters. It is difficult to use, and the side with the supporting device has a space for supplying the coolant for roll cooling. However, there are issues such as limited       [0004]   Also, in multi-stage rolling mills with shape control function, split backup rolls And the bearing members of this split backup roll are installed beside each roll, Fluid pressure that moves the bearing member toward the rolls that are appropriately displaced in the direction along the line A cylinder is provided for each bearing member, and the piston position or pressure of the fluid pressure cylinder is set. Alternatively, a rolling mill that controls the shape by providing a sensor that detects both is proposed. Has been done. (See, for example, JP-A-57-165104)   With this rolling mill, the effect of being able to correct higher-order plate crowns is recognized. However, a large number of split backup rolls are arranged over the entire width of the rolled material. Therefore, there is a disadvantage that the roll mark is transferred to the rolled material, and the structure is complicated. Becomes Further, the offset position is constant, for example, the rolling direction changes in the forward and reverse directions. It is difficult to control by changing the rolling conditions such as time. At the installed location, it is necessary to secure a sufficient coolant supply space for roll cooling. There is a problem left.       [0005]   Roll bending operation for work rolls and intermediate rolls in a multi-stage rolling mill It has been proposed to provide a means for imparting. (For example, JP-A-58-119 (See Japanese Patent No. 407)   In such a rolling mill, the quadratic curve component of the plate crown is corrected by the intermediate roll. Positive, the effect of correcting the plate edge by the roll bending action is recognized, but small Diameter cannot be rolled by work rolls, and the ability to correct higher-order components of the plate crown is inadequate. There is an inconvenience that the foot and the compound elongation cannot be corrected.       [0006]   The object of the present invention is to provide a relative positional relationship between the horizontal moving block and the support roller, and And the excellent plate shape control function by adjusting the bending force of the small diameter work roll. Plate claw by adjusting axial movement of an intermediate roll with expected and curved uneven profile The correction function of the quadratic curve component of the roll shape control of the central part of the rolled material, the intermediate roll, and And / or high-order curve of plate crown by roll bending of small diameter work roll The control of the edge of the rolled material by the correction of the composition, and the horizontal deflection of the small diameter work roll, Economy of rolling stands that can be obtained without local correction of quarter parts It is intended to be provided.       [0007]     [Means for Solving the Problems]   The structure of the present invention, which solves the problems of the prior art, has a pair of small-diameter work in the vertical direction. Multi-stage rolling with rolls 1, 2, intermediate rolls 5, 6, reinforcing rolls 15, 16 In the stand, both of the intermediate rolls 5 and 6 have the same curved contour, , The mounting positions are displaced 180 ° from each other so as to be symmetrical with respect to the upper and lower points. Can slide axially via intermediate roll chocks 3 and 4 that support intermediate rolls 5 and 6. And the intermediate rolls 5 and 6 can be bent in the vertical direction. Work rolls supported by the pair of upper and lower small-diameter work rolls 1, 2 Horizontally moving blocks 9 and 10 that hold the chocks 7 and 8 from both sides in the rolling direction The work rolls 1 and 2 are configured to be movable and adjustable, and the small-diameter work rolls 1 and 2 are vertically moved. It is configured so that it can also perform the bending action of The long end has a support rod that holds these in the rolling direction from the outside of both edges of the rolled material. Rollers 25 and 26 are arranged, and the support rollers 25 and 26 are moved and adjusted in the rolling direction. It is structured so that it can be obtained.       [0008]     【Example】   Next, details of the embodiments of the present invention will be described with reference to the drawings.   1 is a front view of each roll arrangement, FIG. 2 is a side view of FIG. 1, FIG. 3 is a side view, and FIG. 1A-A sectional view, FIG. 5 and FIG. 6 show that the work roll is switched to a small diameter or a large diameter. FIG. 3 is a partially cutaway plan view of a main part showing a state of a support roller for a mushroom.       [0009]   The roll assembly configuration will be described with reference to FIGS. The work rolls 1 and 2 are arranged above and below which are supported by the intermediate roll chocks 3 and 4. It is arranged between the intermediate rolls 5 and 6, and in the standard state, The axis is on a vertical axis plane that passes through the axes of the upper and lower intermediate rolls 5 and 6.       [0010]   Both ends of the small-diameter work rolls 1 and 2 are attached to work roll chocks 7 and 8, respectively. The work roll chocks 7 and 8 are supported in the rolling direction of the rolled material from both sides. It is configured to be movable and can also perform vertical bending action. It is configured as follows. And, water is attached to one end of the small-diameter work rolls 1 and 2. The lock member 11 provided on the flat movement blocks 9 and 10 is engaged to form a retaining structure. Is made. In the figure, 12 is a rolling stand housing, and 13 and 14 are the horizontal movements. This is a hydraulic motor that operates blocks 9 and 10.       [0011]   15 and 16 are reinforcing rolls supported by reinforcing roll chocks 17 and 18. The central axes of the reinforcing rolls 15 and 16 are vertical axes passing through the axial centers of the intermediate rolls 5 and 6. It is on a plane. In the drawing, 19 is a reduction cylinder, 20 is the small diameter work rolls 1, 2, And pass line adjusting devices 21, 22, 22 used when replacing the intermediate rolls 5, 6. 23 and 24 are intermediate roll benders.       [0012]   Further, the upper and lower intermediate rolls 5 and 6 are curved as shown in FIG. The concave contours 5a and 6a and the convex contours 5b and 6b that are continuous with the concave contours 5a and 6a are formed. The mounting positions of 5 and 6 are arranged symmetrically with respect to the upper and lower points, which are displaced from each other by 180 °. It Also, the intermediate rolls 5 and 6 can be axially moved and adjusted in directions opposite to each other. Therefore, the above-mentioned intermediate roll chocks 3 and 4 are replaced with intermediate roll benders 21 and 22. , 23, 24 are slidably arranged, and intermediate roll chocks 3, 4 are provided with cylinders (shown in the figure). (Abbreviation) is attached to adjust the movement.       [0013]   Further, the present invention is such that the small-diameter work rolls 1 and 2 are clamped at both ends of the long-length body from both sides. Support rollers 25 and 26 are provided, and the support rollers 25 and 26 are Provided on the support bridges 28, 29 passed to the rolling stand housing 12. Supported by respective hydraulic cylinders 27, and the support rollers 25 and 26 are rolled. It is designed so that it can move horizontally along the direction. This support roller 25,2 As shown in FIG. 5, 6 is a rolling reaction force when the small-diameter work rolls 1 and 2 have a small diameter, and an intermediate force. The drive torque received from the roll causes a large amount of bending, so the support Horizontal force is applied to the ends of the small-diameter work rolls 1 and 2 by either of the roller rollers 25 and 26. By adjusting the deflection, as shown in FIG. 6, when the small diameter work rolls 1 and 2 have large diameters, Since the bending due to the acting force or the reaction force is small, the support rollers 25 and 26 are retracted. It is something to keep.       [0014]     [Effect of the device]   As described above, according to the configuration of the present invention, the following effects can be obtained. (A) Horizontal movement block of small-diameter work roll and small-diameter work roll body end support roller By interacting with the machine, it can respond to changes in rolling conditions such as reversing the rolling direction, and A small diameter work roll can be set at the cutting position and small diameter rolling is possible. Therefore, an excellent plate shape control function can be exhibited. In addition, the middle with a curved uneven contour By adjusting the quadratic curve component of the plate crown by adjusting the axial movement of the roll, The shape control of the central part of the Control of the rolling mill end by the correction of the higher-order curve component of the plate crown by Quarter part that cannot be removed by the former two due to the horizontal bending action of the small diameter work roll A local revision of may be reasonably possible. (B) In addition to the small-diameter work roll mechanism, the intermediate roll with curved uneven contour Axial movement adjustment, organic combination with large crown control by adjusting bending force Therefore, the plate crown correction effect can be maximized, and in particular, compound elongation can be corrected. It becomes Noh. (C) No need for a lateral intermediate roll and a large number of split support rolls as in the prior art Yes, the structure can be simplified and the cost can be greatly reduced. Roller for rolling material caused by uneven wear of lateral intermediate roll There is no black transcription. (D) Supports that are clamped only from the long end of the work roll from the outside of both edges of the rolled material Since there is a trawler and no support roller continuously provided as in the prior art, There is no space limitation for supplying coolant for roll cooling.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of each roll arrangement. FIG. 2 is a side view of FIG. FIG. 3 is a side view. FIG. 4 is a cross-sectional view taken along the line AA of FIG. FIG. 5 is a partially cutaway plan view of a main part showing a state of a support roller when a work roll is switched to a small diameter or a large diameter. FIG. 6 is a partially cutaway plan view of a main part showing a state of a support roller when a work roll is switched to a small diameter or a large diameter. [Explanation of Codes] 1 work roll 2 work roll 5 intermediate roll 6 intermediate roll 5a concave contour 6a concave contour 5b convex contour 6b convex contour 7 work roll metal chock 8 work roll metal chock 9 horizontal movement block 10 horizontal movement block 11 lock member 12 Rolling stand housing 15 Reinforcing roll 16 Reinforcing roll 25 Support roller 26 Support roller 27 Hydraulic cylinder 28 Support bridge 29 Support bridge

Claims (1)

[Claims for utility model registration] A pair of small-diameter work rolls (1) in the vertical direction,
(2), intermediate rolls (5), (6), reinforcing rolls (1
In the multi-stage rolling stand having 5) and (16), the two intermediate rolls (5) and (6) have the same curved contours, and their mounting positions are shifted 180 ° from each other to move up and down. Intermediate roll chock (3), which is provided in point symmetry and supports both intermediate rolls (5) and (6),
It is arranged so as to be slidable in the axial direction via (4), and the intermediate rolls (5) and (6) are configured to be capable of vertical roll bending, and the pair of upper and lower work rolls (1), (2) The work roll chocks (7) and (8) supporting them are configured to be movable and adjusted in the rolling direction by horizontal moving blocks (9) and (10) that sandwich the work roll chocks (7) and (8) from both sides. (1) and (2) are configured so that they can also perform a bending action in the vertical direction.
Support rollers (25) and (26) for sandwiching these in the rolling direction from the outer sides of both ends of the rolled material are arranged, and the support rollers (25) and (26) can be moved and adjusted in the rolling direction. A rolling stand characterized by being hardened.