JPS6026602B2 - Rolling method and device using multi-high rolling mill - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rolling method and apparatus using a multi-high rolling mill.

In recent years, strict requirements have been placed on the accuracy of the shape of plates produced by rolling mills, and a method has been developed in which roll crossing is performed in a multi-high rolling mill to change the roll crown of the work rolls to improve the shape of the plates. However, in conventional roll crossing, rattan boxes attached to both ends of a roll such as a backing roll that performs roll crossing are formed so as to move on a circular trajectory drawn with the center of the body length of the roll as the center of rotation. As a result, the backing roll etc. are given a head slant when viewed from above, which has the disadvantage that the pattern provided by the roll crossing is limited to one.

Therefore, even if it is necessary to apply the effect of roll crossing to a portion other than the intersection of the roll crossings in the width direction of the rolled material, it has not been possible to do so. In addition, some roll crowns are not changed by roll crossing, but instead use a combination of roll pending action and a method in which intermediate rolls are moved in and out of the track line direction by an appropriate amount. There are drawbacks such as unbalanced status.

The present invention was made for the purpose of eliminating the above-mentioned drawbacks of the conventional means, and includes supporting the front and rear parts of the body of the intermediate roll by necessary means, and interposing the intermediate roll between the work roll and the backing roll. In a multi-high rolling mill, an intermediate roll that intersects with a work roll is supported before and after a required position in the axial direction of the body by necessary means, and the end of the intermediate roll that contacts the work roll is supported in a plane parallel to the plate material and in the flow direction of the plate material. The roll crown of the work roll is brought into a desired state by moving the intermediate roll in a direction parallel to the work roll and bending the intermediate roll using the support portion of the intermediate roll body as a fulcrum, thereby rolling the plate material.

Embodiments of the present invention will be described below with reference to the drawings. In the figure, 1 is a work roll, 2 is an intermediate roll, and 3 is a backing roll.

Intermediate roll chocks 5 are iron-fixed to both shaft ends of the intermediate roll 2 via bearings 4, while a screw block 7 and a cylinder block 8 are attached to the inner side of the housing 6.
is installed.

A worm wheel 10 driven by the worm 9 is iron-loaded inside the screw block 7, and the worm wheel 10 rotates but does not move in the thrust direction using bearings attached to the screw block 7 on its front and rear surfaces. 11 and the slip-off prevention lid 12. Worm wheel 10
A screw shaft 14 is fixed to the hole through a spline key 13, and the screw shaft 14 passes through the slip-off prevention lid 12, and one end thereof is connected to a spherical pressure receiver provided on one side of the intermediate roll chock 5. 15. Further, the threaded portion of the screw shaft 14 is screwed into the female thread of the slip-off prevention lid 12. Furthermore, although not shown, each worm 9 is connected to an appropriate drive device via an intermediate shaft or the like. cylinder block 8
A piston 18 to which a rod 17 is fixed is slidably arranged in a cylinder 16 provided in the cylinder 16, and the tip of the rod 17 is placed in a spherical pressure receiver 19 provided on the pond side of the intermediate roll chock 5. are doing. Further, the marking lines of the screw shaft 14 and the rod 17 are formed parallel to the traveling direction of the plate material. The intermediate roll chock 5 is formed so that the flat surfaces of the pressure receivers 15, 19 that are in contact with the intermediate roll chock 5 can be moved in a direction perpendicular to the plane of the paper as viewed in FIG. Support rolls 20, 2 that can rotate in contact with the surface of the intermediate roll 2 are provided before and after the intermediate roll 2.
1 is disposed, and the support rolls 20 and 21 can be moved in the axial direction of the intermediate roll 2 by appropriate means. When giving the required roll crown to the upper and lower work rolls 20, 21,
is moved in the axial direction to position it at a desired position, and then a drive device (not shown) is driven to rotate the worm 9 and worm wheel 10, and the screw shaft 14 is moved in and out of the screw block 7. The roll chock 5 is moved in a direction parallel to the flow direction of the plate material.

Further, pressure oil is supplied to the cylinder 16 side so as to synchronize with the movement of the screw shaft 14, and the intermediate roll chock 5 is held between the screw shaft 14 and the rod 17 so as to be slidable in the vertical direction. When the intermediate roll chock 5 is moved in a direction parallel to the flow direction of the plate material, the upper and lower intermediate rolls 2 and 2 are supported by support rolls 20 and 21, respectively, so the intermediate roll chock 5 and The space between the support rolls 20 and 21 is bent in a direction parallel to the traveling direction of the plate material, and the vertical space between the work roll 1 and the intermediate roll 2 changes depending on the curved shape of the intermediate roll 2. The roll crown of the work roll 1 can be brought into the required state.

When it is necessary to change the roll crown of the work roll 1, the support rolls 20 and 21 are moved in the direction of the sea bream line to change the supporting position of the intermediate roll 2, and the screw shaft 14 is used to change the intermediate roll crown.

Change the control chock 5 to a direction parallel to the flow direction of the plate material,
Thus, the roll crown of the work roll can be changed to any desired state. FIG. 6 shows another embodiment of the present invention, in which the support rolls 20 and 21 are not separated into two on each side as shown in FIG. 5, but are made into one roll.

Even with such a configuration, the roll crown of the work roll 1 can be changed arbitrarily by replacing the body length of the support roll with a support roll of a predetermined length. FIGS. 7 and 8 show other embodiments of the intermediate roll chock of the present invention, and the difference from the intermediate roll chock described above is that the spherical pressure receiving part is removed, and the screw shaft 14 is attached to the intermediate roll chock 5.
The rod 17 of the cylinder 16 is attached to the cylindrical seat 22 with a concave inner surface, and the cylindrical seat 23 with a convex outer surface is attached to the inside of the cylindrical seat 22, and the flat part inside the cylindrical seat 23 and the side surface of the intermediate roll chock 5 are This is the point where the liner 24 is inserted in between. Even with such a configuration, the required roll crown can be given to the work roll in the same manner as described above. Note that the intermediate roll choke 5 is the tip of the screw koji 14 and the liner 2.
It slides on four sides, and the cylindrical seat is for maintaining alignment of the intermediate roll. Also, in the drawings, the same reference numerals as those shown in FIGS. 3 and 4 indicate the same components. Note that the present invention is not limited to the above-mentioned embodiments, and the intermediate rolls shown in FIGS.
The support range of the intermediate roll can be changed by a set of support rolls, and the bending range of the intermediate roll can also be changed;
It can be used in both a 4-high rolling mill and a 6-high rolling mill, and instead of the pressure cylinder and worm reducer arranged to sandwich the intermediate roll chock, pressure cylinders may be placed on both sides of the intermediate roll chock. Of course, it is also possible to arrange worm reducers on both sides of the roll chock.

According to the rolling method and device using a multi-high rolling mill of the present invention,
Since both ends of the intermediate roll are moved in a plane parallel to the plate material and in a direction parallel to the flow direction of the plate material using the required position in the axial direction of the intermediate roll arm as a fulcrum, various bulging effects can be achieved as described below. .

1. The work roll crown can be rolled into various shapes, so shape control is easy and highly flexible, and plates with various cross-sectional shapes can be obtained as required.

In particular, shape control is much easier and more flexible than a moxibustion type rolling mill in which both ends of the intermediate roll are fixed and the crown of the work roll is controlled by applying a bend to the body of the intermediate roll. 2. Since a fulcrum is provided on the intermediate roll and no fulcrum is provided on the work roll, the work roll is not damaged and the product quality can be improved.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of the rolling method and bag straightening using the multi-high rolling mill of the present invention, Fig. 2 is a plan view of the intermediate roll portion in Fig. 1, and Fig. 3 is an enlarged cross section of the intermediate roll chock portion in Fig. 2. 4 is a view taken along the W-W direction in FIG. 3, FIG. 5 is an explanatory diagram of the case where the work roll is bent, FIG. FIG. 7 is an explanatory diagram of another embodiment of the intermediate roll chock portion, and FIG. 8 is a view taken from the direction of the arrow in FIG. 7. 1 is a work roll, 2 is an intermediate roll, 3 is a backup roll, 5
is an intermediate roll chock, 6 is a housing, 7 is a screw block, 8 is a cylinder block, 14 is a screw shaft, 20,
21 indicates a support role. Figure 1 Figure 2 Figure 5 Figure 6 Figure 7 Figure 8 Ship diagram dimensions

Claims (1)

[Scope of Claims] 1. In a multi-high rolling mill in which an intermediate roll is interposed between a work roll and a backing roll, the intermediate roll in contact with the work roll is supported before and after a required position in the axial direction of the body by a required means, and By moving the end of the intermediate roll in contact with the work roll in a plane parallel to the plate material and in a direction parallel to the flow direction of the plate material, and bending the intermediate roll using the support part of the intermediate roll body as a fulcrum, the work roll can be bent. A rolling method characterized by rolling a plate material with a roll crown in a required state. 2. In a multi-high rolling mill in which an intermediate roll is interposed between a work roll and a backing roll, the roll chocks provided at both ends of the intermediate roll in contact with the work roll are placed in both directions parallel to the plate material and in the flow direction of the plate material. A device for moving the intermediate roll in a direction parallel to the work roll is provided with support rolls that can be moved in the axial direction of the intermediate roll and serve as a fulcrum when bending the intermediate roll, before and after the intermediate roll that is in contact with the work roll. Characteristic rolling equipment.