JPS6247602B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an edger provided between rolling mill stands.

Generally, a method of reducing the width of the strip by installing an edger between the stands of a finishing mill or the like has not been practiced in the past. This is due to the fact that, especially in finishing mills, the strip is so thin that it tends to buckle, making it impossible to achieve sufficient width reduction.

The present invention was made in view of these points.
By providing a vertical rolling mill between the rolling mill stands, arranging a looper, and providing a roll height adjustment device that adjusts the height position of the vertical roll according to the height position of the looper, the width can be increased. This invention relates to an edger between stands designed to prevent buckling of the strip due to reduction rolling and to increase the amount of width reduction.

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show an example of the present invention, in which a vertical rolling mill 5 for width reduction rolling of a strip 4 is installed between rolling mill stands 3 and 3' consisting of a rolling roll 1 and a backing roll 2. In addition, a looper 7 is provided on the upstream side of the strip line of the vertical rolling mill 5 to apply tension to the strip 4 via a looper roll 6.

The vertical rolling mill 5 is supported on a base plate 9 that moves in the width direction of the strip 4 by driving a positioning shaft 8, as shown in FIG. The vertical rolling mill 5 includes a chock support device 10 that supports the base plate 9 so as to be slidable in the width direction of the strip 4;
A vertical roll 12 attached to the chock support device 10 via a chock 11, supported by a guide 13 at an outer position of the chock support device 10,
Further, a fine adjustment cylinder 14 is provided for finely adjusting the position of the vertical roll 12 in the strip width direction via the chock support device 10.

Further, the vertical position of the vertical roll 12 can be adjusted by moving the chock supporting device 10 up and down along the guide member 16 to the upper position of the chock supporting device 10 on the supporting member 15 fixed on the base plate 9. A roll height adjusting cylinder 17 is provided for adjusting the roll height. Further, the roll height adjustment cylinder 17 can be automatically operated via the control device 20 in response to an angle signal 19 from an angle detector 18 provided at the rotation base of the looper 7 shown in FIG. ing.

According to the above structure, width reduction is performed by the vertical rolling mill 5 between the rolling mill stands 3 and 3' with the looper 7 raised to apply tension to the strip 4. Width reduction can be performed with a large amount of reduction while preventing buckling, thereby making it possible to increase the amount of width reduction adjustment, improve edge drop, rectify the edge of the plate, and improve the plate crown. Further, since the height position of the vertical roll 12 is adjusted by the roll height adjustment cylinder 17 according to the height variation of the strip 4 caused by the looper 7, the height position of the vertical roll 12 is adjusted by the height variation of the strip 4. 4 prevents the occurrence of tension fluctuations due to slipping, making it possible to stably apply tension and thereby stabilize the width reduction. On the other hand, since the height of the vertical roll 12 is adjusted in response to variations in the height of the strip 4, the length of the vertical roll 12 may be short. However, in this embodiment, due to a delay in the response of the height adjustment of the vertical roll 12 to sudden changes in the height of the strip 4, the vertical roll 1
In order to prevent the strip 4 from coming off the roll 2, the length of the vertical roll 12 is made to have a margin greater than the height variation of the strip 4.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the looper may be disposed downstream of the strip line of the vertical rolling mill, and the vertical rolls may be driven by a motor through a drive device. Although the width adjustment of the vertical roll is configured to be performed at the same time as the entrance guide (not shown), it is possible to adjust the width of the vertical roll and the entrance guide using separate width adjustment devices. What you can do,
It goes without saying that various rolling methods and the like of the vertical rolling mill may be adopted, and that various other changes may be made without departing from the gist of the present invention.

According to the inter-stand edger of the present invention described above, the following excellent effects can be achieved.

() Since tension is applied to the strip to lower the width, it is possible to perform a large width reduction.Therefore, (i) the width reduction adjustment amount can be expanded.

(ii) Edge drop can be improved.

(iii) It is possible to make the ends of the strip width rectangular.

(iv) The plate crown can be improved.

() Since the height position of the vertical roll is adjusted according to the height position of the looper, it is possible to prevent the strip from slipping against the vertical roll due to changes in the height of the strip due to the looper, and to reduce the tension. It is possible to achieve stable addition and thereby stabilize the width reduction.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view showing an example of the present invention, and FIG. 2 is an explanatory view of FIG. 1 viewed from the - direction. 3 and 3' are rolling mill stands, 4 is a strip,
5 is a vertical rolling mill, 7 is a looper, 10 is a chock support device, 12 is a vertical roll, 16 is a guide member, 17
is a roll height adjustment cylinder, 18 is an angle detector,
20 indicates a control device.

Claims (1)

[Claims] 1. A vertical rolling mill is provided between the rolling mill stands, and a looper is provided, and the height position of the vertical roll of the vertical rolling mill is set in accordance with the height position of the looper. An inter-stand edger characterized by being provided with an adjustable roll height adjustment device.