JPH0475081B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a width rolling mill that is capable of width reduction of thin materials and is capable of good width reduction even when the inclination of the rolling line changes. be.

[Prior Art] Conventionally, width reduction of a rolled material is generally performed by a width rolling mill installed near a roughing mill on the upstream side of a rolling line. However, if width reduction is performed on the upstream side of the rolling line, edge drops occur at the edges of the material due to the thickness reduction performed on the downstream side of the rolling line, deteriorating the cross-sectional shape of the plate, and furthermore, the target plate width of the rolled product may not be achieved. There were problems such as an increase in the error in the width of the plate and a decrease in the accuracy of the plate width. Therefore, in recent years, consideration has been given to performing width reduction between finishing stands on the downstream side of the rolling line to improve the plate cross-sectional shape and plate width accuracy.

[Problems to be Solved by the Invention] However, when width reduction is performed by installing an edger between finishing stands, the thickness of the material has become thinner due to thickness reduction on the upstream side. There is a risk of buckling of the material, and a looper that can swing up and down is installed between the finishing stands to push up the strip and control its tension, so the looper roll The inclination of the rolling line changes depending on the position, and therefore a width rolling mill in which the inclination of the vertical rolls is fixed to the rolling line has the problem that width reduction cannot be performed satisfactorily.

In view of the above-mentioned circumstances, the present invention has been made with the object of making it possible to prevent buckling even during width reduction of thin materials and to enable width reduction to be performed satisfactorily even when the inclination of the rolling line changes. This is what I did.

[Means for Solving the Problems] In the present invention, a roll support that is equipped with a vertical roll for reducing the width of the strip end and is tiltable in the longitudinal direction of the strip is provided with a vertical roll that presses the vicinity of the strip end. The upper and lower presser rolls are installed.

[Function] Therefore, in the present invention, the vertical rolls are tilted perpendicularly to the rolling line, the upper and lower presser rolls are also adjusted to have an inclination corresponding to the rolling line, and the strip is held vertically by the upper and lower presser rolls. The width is rolled down by rolls.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.

1 to 3 show an embodiment of the present invention.

A frame body 1 equipped with cylindrical frames 2 whose axes extend in the width direction of the strip S on both sides in the width direction of the strip S.
A horizontal shaft 4 is fitted into a bush 3 fitted in the cylindrical frame 2 so as to be rotatable and movable back and forth in the axial direction, and a yoke 5 is fixed to the strip end side of the horizontal shaft 4. A vertical shaft 6 is fixed to the yoke, a vertical roll 8 is rotatably fitted to the vertical shaft 6 via a bearing 7, and vertical hydraulic cylinders 9 and 10 are installed above and below the tip of the strip end of the yoke 5. Attach the brackets 11 and 12 to the lower and upper ends of the piston rods of the hydraulic cylinders 9 and 10,
Upper and lower press rolls 13 and 14 are rotatably attached to the brackets 11 and 12 parallel to the horizontal shaft 4.

A hollow portion is provided at the rear of the horizontal shaft 4, a piston rod 15 is fitted into the hollow portion, and the rear end of the piston rod 15 is fixed to a boss 16 at the rear end of the cylindrical frame 2, so that it can be freely rotated at a desired position within the cylindrical frame 2. A worm wheel 17 is disposed so as not to move in the axial direction of the horizontal shaft 4, and the horizontal shaft 4 is fitted into the worm wheel 17, and a key 18 is interposed between the horizontal shaft 4 and the worm wheel 17. The rotation of the wheel 17 is transmitted to the horizontal shaft 4, and a vertical shaft 21 is fitted through a bearing 20 to a frame 19 fixed to the outside of the cylindrical frame 2, and a worm 22 is fixed to the vertical shaft 21. The worm 22 is engaged with the worm wheel 17, and the output shaft of the drive device 23 is connected to the vertical shaft 21.

As shown in FIG. 3, the width rolling mill 24 having the above configuration is disposed at a predetermined position near the looper 27 between the finishing stands 25 and 26. In addition, in FIG. 1, 28 is a piston, and 29 and 30 are oil chambers.

When width rolling is performed using the width rolling mill 24, the driving device 23 is driven to rotate the horizontal shaft 4 by a predetermined angle via the worm 22 and the worm wheel 17, so that the axis l of the vertical roll 8 is aligned with the rolling line. Adjust the inclination of the vertical roll 8 so that it is vertical. If the inclination of the vertical roll 8 is adjusted, the upper and lower presser rolls 1
3 and 14 are also adjusted to predetermined positions.

Once the positions of the vertical roll 8 and the upper and lower presser rolls 13, 14 are adjusted, pressurized oil is supplied to the oil chamber 29 to move the horizontal shaft 4 toward the strip S, and the gap between the left and right vertical rolls 8, 8 is removed from the strip S. The fluid pressure cylinder 9,
10 lowers and raises the upper and lower press rolls 13 and 14 to clamp the ends of the strip S.
When the strip S is fed in this state, the strip S is rolled down to a predetermined width by the left and right vertical rolls 8, 8. Also, since the ends of the strip S are held between the upper and lower press rolls 13 and 14, the width reduction force is supported by the upper and lower press rolls 13 and 14, and the width reduction force is not transmitted to the center of the strip S. Even if the strip S is thin, buckling will not occur in the strip S.
Furthermore, since the axis l of the vertical roll 8 is perpendicular to the rolling line, stripping will not occur between the strip end and the outer periphery of the vertical roll 8 during width reduction, and therefore the strip end will not be damaged or The outer periphery of the vertical roll 8 will not be scratched.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] According to the width rolling mill of the present invention, the ends of the strip are held between the upper and lower press rolls to perform the width reduction, so there is no risk of buckling even if the strip is thin, and the rolling Even if the inclination of the line changes, the vertical roll can be rolled perpendicularly to the rolling line for width rolling, so good width rolling can be performed.Furthermore, the inclination of the upper and lower presser rolls can be changed integrally with the vertical roll. Therefore, there is no need for a tilting device for the upper and lower presser rolls, and various excellent effects can be achieved, such as the device being smaller and the equipment cost being lower.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of one embodiment of the vertical rolling mill of the present invention, Fig. 2 is a view taken in the direction of the arrow in Fig. 1, and Fig. 3 shows the vertical rolling mill of Fig. 1 arranged between finishing stands. FIG. In the figure, 2 is a cylindrical frame, 4 is a horizontal axis, 5 is a yoke, 8 is a vertical roll, 9 and 10 are fluid pressure cylinders,
13 is an upper presser roll, 14 is a lower presser roll, 15
is the piston rod, 17 is the worm wheel, 2
3 is a drive device, and 24 is a width rolling mill.

Claims (1)

[Claims] 1. A width characterized in that a roll supporter is equipped with a vertical roll for reducing the width of the strip end and is tiltable in the longitudinal direction of the strip, and a vertically movable presser roll that presses the vicinity of the strip end is attached to the roll support. rolling machine.