JPS62197203A - Edge forming device for metallic sheet - Google Patents

Abstract

PURPOSE:To improve the end face shape of a rolling material and to improve the accuracy of a sheet width by mating the end face of a rolled down sheet material with the end face of work rolls for rolling a metallic sheet and bringing disk-shaped rolls into press contact with the end face of the sheet material thereby restraining the axial flow of the sheet material. CONSTITUTION:An upper pulling roll stand 7 having grooved pulling rolls 15, 16 at the top end is freely axially movably attached to an upper journal box 4 by means of an upper hole 12 and supporting bolts 13. A lower pressing roll stand 8 having grooved pressing rolls 19, 20 has the disk roll 22 which is fitted into the grooves of the rolls 15, 16, 19, 20. Stand is freely rotatably tightened by a pulling adjusting device 10 and is fixed to the stand 7 by set screws 11. The disk roll 22 presses the end face of the sheet material 3 coinciding with the end face of the work roll 1 by a pressing adjusting device 9 mounted to the upper journal box. The end face on the opposite side of the sheet material 3 is pressed by the similar mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling device and an edge forming device for rolling and forming a plate having a rectangular width end.

[Prior Art] When a plate is flat-rolled by a rolling mill, edge drops occur at the widthwise ends of the plate a as shown in Figure 4 (a) due to the bending and flatness of the rolls. Since it is not constrained, a radial flow occurs and the edge drop becomes large. In addition, the quality of the product deteriorates, such as a decrease in sheet width accuracy and a deterioration in the shape of the sheet width edge, which causes problems such as a decrease in yield.

For this reason, it has been conventional practice to raise the edge of the plate in the process before final flat rolling using a barrel end taper, a hole, or an edger (edge up), and then perform flat rolling to reduce edge drop. .

[Problems to be Solved by the Invention] However, even if the width of the plate is reduced using the above-mentioned edger for the purpose of reducing edge drop or improving the width accuracy of the plate, a flat rolling machine for thinning the plate cannot be used. If this is applied, a large width return occurs, resulting in edge drops at the width ends of the plate a and a decrease in plate width accuracy, as shown in FIG. 4(b).

FIG. 5 compares the state of change in sheet width when flat rolling is continuously performed after edgering with the result of full-pass flat rolling. It is clear that even if edgers are applied with width reduction amounts of 1E, 2E, and 3E, when flat rolling is repeated, a width return Is of 28.3S occurs so as to approach the result of all-pass flat rolling.

In addition, width reduction of such a thin plate is carried out with tension applied to the plate to prevent buckling, but there is a limit to the amount of width reduction due to buckling, and it is difficult to reduce the width by too much. Therefore, the width end portion of plate a remains with edge drops and sag as shown in FIG. 4(a).

The present invention has been made in view of these conventional problems, and an object of the present invention is to provide a rolling apparatus capable of precisely forming even a thin plate into a rectangular shape.

[Means for solving the problems] The present invention attempts to solve the above technical problems, and
In a rolling device that performs rolling by aligning the body end face of the work roll with the vicinity of the width end face of the plate, the width end is such that a disc-shaped roll is pressed or supported on the width end face of the plate in the rolling part of the work roll. This invention relates to a metal plate edge forming device characterized by being provided with a restraint device.

[Function] Therefore, in the present invention, a rectangular plate can be rolled by reliably restraining the radial flow in the width direction of the plate by the disk-shaped roll immediately below the rolling part.

[Example] An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an example of the present invention, in which the upper and lower work rolls 1 and 2 are shifted to opposite sides in the axial direction, and one of the body ends of the upper and lower work rolls 1 and 2 is aligned with the width of the plate 3. In a rolling apparatus adapted to perform rolling according to the end surface, a width end restraining device 6.6' is provided between the shaft boxes 4 and 5 and 4' and 5' at the shaft ends of the upper and lower work rolls 1.2. ing.

Regarding one of the width end restraining devices 6, this device 6 has an upper pulling roll mount 7 and a lower pressing roll mount 8. It is attached to the upper axle box 4 so that its position can be adjusted in the axial direction, and the pull roll mount 1 is attached to the pressing roll mount 8 by a traction adjustment device 10 so that its position can be adjusted in the roll axis direction, so that the relative position can be adjusted. It can be changed.

The two frames 7 and 8 mentioned above can be fixed together with fixing screws 11. Furthermore, the pulling roll mount 7 is suspended and supported by an elongated hole 12 and a support bolt 13 so as to be movable in the roll axis direction with respect to the upper axle box 4.

A pulling roll 15, 1B having a groove 14 on the outer periphery is located at the front and rear positions in the direction of movement of the plate 3 at the tip of the pulling roll mount 7.
is horizontally rotatably mounted via a vertical shaft 17, and on the press roll pedestal 8 at a position outside the pull rolls 15 and 16 is a press roll 19. having a groove 18 on its outer periphery. 20 is rotatably mounted via a vertical shaft 21, and the rolls 15.16, 19.20 cause a disc roll 22 with a required diameter to move into the groove 14.1.
It is horizontally rotatably pressed and supported from four locations on the outer periphery via 8.

The disc roll 22 is pressed and supported in the vicinity of the body end face 23 of the upper work roll 1 while being in contact with the outer circumferential upper surface of the lower work roll 2 .

Further, the width end restraining device 6' is configured in the same manner as the device 6 in point symmetry, so a detailed explanation will be omitted and the same components will be indicated by adding a dash (') to the reference numerals. ing.

During rolling, the upper and lower work rolls 1° are rotated so that the roll body end surfaces 23, 23' on the axle box 4, 5' side to which the width end restraining devices 6, 6' are attached are aligned with the width ends of the plate 3. In the state where the axial position of 2 is shifted and adjusted, the attraction adjustment device 10.
10' pulls the pulling rolls 15, 16° 15', 16'
After the disc rolls 22, 22' are firmly supported between the work rolls 19, 20 and 19', 20', the outer periphery of the disc rolls 22, 22' is adjusted by the pressing adjustment device 9.9'. body end surfaces 23, 23'
6. The plate 3 is supported so as to be pressed toward the same direction, and the plate 3 is rolled in this state.

At this time, the plate 3 tries to extend in the longitudinal direction and the width direction by rolling down, but the disc roll 22
, 22', it cannot extend, and therefore all of it extends in the longitudinal direction. Also, by shifting the upper and lower crawlers 1 and 2, the body end surfaces 23 and 23
Since rolling is carried out so that the ' is aligned with the widthwise end of the board 3, bending of the roll can be suppressed and edge drops at the ends of the board 3 can also be prevented.

As mentioned above, the disc rolls 22, 22' effectively suppress the width flow in the width direction of the plate immediately below the rolling part, thereby achieving a rectangular shape as shown in Fig. 4 G'k> with high width dimension accuracy. The plate 3 can be rolled. Therefore, it is possible to improve product quality and yield.

Note that the present invention is not limited to the above-mentioned embodiments, and the width end restraint device may be mounted on a shift block other than the roll axle box to improve operability during roll conversion, or may be mounted on a bar shifter. In the case of a system, the adjustment device may be placed on a bar and adjusted by itself, the drive system of the adjustment device that performs pushing and pulling can be selected from various methods, and it is not limited to the roll shift system, etc. It goes without saying that various changes may be made without departing from the spirit of the invention.

[Effects of the Invention] As described above, according to the metal sheet edge forming apparatus of the present invention, the width end surface of the sheet is held down by the disk-shaped roll of the width end restraining device immediately below the rolling of the work roll. , it is possible to reliably restrict the width flow in the width direction of the plate without buckling the plate, and it is possible to produce an excellent effect of rolling a high-quality rectangular plate with high width dimensional accuracy.

[Brief explanation of drawings]

FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing one embodiment of the present invention.
Figure 3 is a side view of Figure 1, Figure 4 is a line diagram showing the shape of the rolled plate, Figure 5 is an explanatory line showing width return due to flat rolling after width reduction. It is a diagram. 1 is the upper work roll, 2 is the lower work roll, 3 is the plate, 4
．． 4' and 5.5' are axle boxes, 6 and 6' are width end restraint devices, 7.7' is a pull roll mount, 8.8' is a push roll mount, 9 and 9' are a push adjustment device, and 10 .10' is the attraction adjustment device, i1. i i' is a fixing screw, 13.13' is a support bolt, 15.16.15', 16' are pulling rolls, 19, 20.19', 20' are pressing rolls, 2
2.22' is a disc roll, and 23.23' is an end face of the body. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd. -〇-

Claims (1)

[Claims] 1) In a rolling machine that performs rolling by aligning the body end face of the work roll with the vicinity of the width end face of the plate, the width is such that a disc-shaped crawl is pressed and supported against the width end face of the plate in the rolling part of the work roll. A metal plate edge forming device characterized by being provided with an edge restraint device.