JPS6222684B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in cross-roll rolling mills.

The present applicant has proposed a method for controlling the thickness distribution in the width direction of a rolled product by rolling with crossed rolls, as disclosed in JP-A-55-64908 and JP-A-55.
-We have already proposed what is shown in Publication No. 153605. These rolling machines have an upper roll and a lower roll.
The lines can be intersected at desired angles with respect to lines perpendicular to the rolling direction. Regarding the cross mechanism, the present applicant has disclosed the specifications of Japanese Patent Application Laid-Open No. 153606/1983, Japanese Patent Application No. 32612/1983, and Japanese Patent Application No. 32613/1983
131004 and Japanese Unexamined Patent Publication No. 131005). In these proposals, the roll jocks of the upper roll and lower roll are moved by the same amount in opposite directions on the driving side and the working side by means of a jack provided on the housing or a pedestal attached to the housing, either directly or indirectly. The rolls are rotated around a vertical axis passing through the center of the rolling mill, so that the upper and lower rolls cross each other.

Figure 1 shows an example of the roll cross mechanism of a four-high rolling mill proposed in Japanese Patent Application No. 55-32613. In the figure, 1 is a rolled plate, 2 and 2' are upper and lower work rolls, ′ is the upper and lower backup roll,
4 is a reduction screw, 5 and 5' are roll bending devices, 6 and 7 are upper roll jocks, 6' and 7' are lower roll jocks, 8 is a housing, and 9 is a chute. Plate, 10 is a hydraulic pressure reduction cylinder, 13
a, 13b, 13c, 13d are upper roll jacks, 13a', 13b', 13c', 13d' are lower roll jacks, 15 is a liner for adjusting the pass line, 2
1 is the top beam, 21' is the bottom beam, 22
22' indicates an upper cross beam, and 22' indicates a lower cross beam. This proposed roll cross mechanism uses lower roll jacks 13a', 13b', 13c', 13
d' and these jacks press the lower roll jocks 6', 7' via the lower cross beam 22', thereby performing the cross operation of the rolls. However, in the proposed cross-type rolling mill equipped with the roll cross mechanism, the liner 15 for adjusting the pass line is sandwiched between the lower roll chock 7' and the bottom beam 21', so the roll cross operation is repeated. However, there are drawbacks such as the liner 15 slipping and being worn out.

The present invention was proposed for the purpose of providing a cross roll rolling mill equipped with a roll cross mechanism that eliminates the drawbacks of the roll cross mechanism proposed above. , in a cross roll rolling mill in which a pass line adjustment liner is disposed between the bottom beam, a slide base is horizontally movably interposed between the pass line adjustment liner and the bottom beam, and during roll cross operation. This invention relates to a cross-roll rolling mill characterized in that it is constructed so that a lower back up roll chock, a liner for pass line adjustment, and a slide base are moved simultaneously and integrally.

The present invention will be explained in detail below using the embodiment shown in FIG. 2, and only the differences from the proposed embodiment shown in FIG. 1 will be explained. That is, in the present invention, a pass line adjustment liner 15 and a slide base 14 are disposed between the lower back up roll yoke 7' and the bottom beam 21' as shown in the figure.
In addition, the lower cross beam 22', which is driven by the lower roll jacks 13a', 13b', 13c', and 13d' that operate during the cross roll operation, moves between the lower back up roll chock 7' and the slide base 14.
The shape and dimensions of the slide base 14 are set so that it comes into contact with both members at the same time and moves both members together. Also, slide base 1
An appropriate gap is provided between the housing 8 and the housing 8 so that the housing 4 can be moved horizontally.

In the present invention, as described above, the pass line adjustment liner 15 and the slide base 14 are placed between the lower back up roll yoke 7' and the bottom beam, and the pass line adjustment liner 15 is attached to the lower back up roll yoke 7'. The lower back up roll yoke 7', the pass line adjustment liner 15, and the slide base move integrally at the same time to perform the cross operation. Therefore, no relative slippage occurs between these members. Therefore, even if the roll cross operation is repeated, there is no fear that the pass line adjustment liner 15 will shift or wear out, and the rolls will always be set at the required cross angle.

Next, another embodiment of the present invention shown in FIG.
This example differs from the example shown in FIG. 2 in that jacks 13e' and 13f' for pressing the slide base 14 are provided as shown, but the same effect is achieved. In this example,
Jackets 13a', 13b', 13e' and Jackets 1
3c', 13d', and 13f' are moved mechanically or electrically to horizontally move the lower back up roll yoke 7' and the slide base 14 by the same distance at the same time.

Since the cross roll rolling mill of the present invention has the above-described configuration and operation, according to the present invention, even if the cross operation of the rolls is repeated,
Since the pass line adjustment liner does not shift or wear out, a practical effect can be achieved in that the roll can always be set at the required cross angle.

[Brief explanation of the drawing]

FIG. 1 is a side view of a cross-roll rolling mill previously proposed by the applicant, FIG. 2 is a schematic illustration of one embodiment of the present invention, and FIG. 3 is a schematic illustration of another embodiment of the present invention. FIG. 7': Lower backup roll check, 14:
Slide base, 15: liner for path line adjustment, 21': bottom beam, 22': cross beam.

Claims (1)

[Claims] 1. In a cross roll rolling mill in which a pass line adjustment liner is disposed between the lower back up roll chock of the cross roll rolling machine and the bottom beam, a slide base is installed between the pass line adjustment liner and the bottom beam. Interposed so that it can be moved horizontally,
A cross roll rolling mill characterized in that the lower back up roll chock, liner for pass line adjustment, and slide base are simultaneously moved integrally during roll cross operation.