JPS6247082B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus used for width rolling of plate material,
To prevent buckling of plate materials, especially wide materials 1
It is an object of the present invention to provide a device capable of performing a large width reduction per pass.

Conventionally, since a width rolling mill is not equipped with a buckling prevention device, buckling and dot bones b occur in the rolled material a as shown in FIG. For this reason, the width return amount increases, and in order to obtain the target width, it is necessary to repeat a small width reduction amount that does not cause backling, or to roll the rolled material a larger than the target width.
This method involves rolling the sheet and cutting the ends in the width direction to the required width, which has problems such as a decrease in rolling efficiency due to an increase in the number of passes and a decrease in yield due to cutting of the sheet ends. Generally, the width reduction limit value at which buckling occurs sharply decreases as the plate width ratio (plate width/plate thickness) increases, that is, as the plate width becomes wider and the plate thickness becomes thinner, as shown in FIG. Particularly, before tentering rolling, during tentering rolling, and in finish rolling where an edger is used, because the plate thickness is thin and the plate width is wide, buckling occurs, causing the above-mentioned problems.

The present invention is designed to provide a large width reduction amount even when the plate width ratio is large, and the end pressing rolls are placed near the left and right vertical rolls so as to sandwich the widthwise ends of the material to be rolled from above and below. A guide arm provided therein is fixed to an axle box of the vertical roll, and the axle box is configured to be adjustable in rotation, and the end presser roll can be rotated around the axis of the vertical roll and fixed in position. A width rolling device characterized by
This is related to.

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

FIG. 3 shows an example of an edger, in which end presser rolls 4 and 5 are installed near the inner sides of the left and right vertical rolls 1 and 2 to press the widthwise ends of the rolled material 3 from above and below. , upper and lower housings 6 to support the rolled material 3 from above and below at the middle part in the width direction,
7 is provided with a buckling prevention device composed of intermediate press rolls 10 and 11 provided via roll stands 8 and 9, and each of the press rolls 4, 5, 10, and 11 is used to hold the plate of the material 3 to be rolled. The vertical spacing can be set according to the thickness.

4 to 6 show details of the end presser rolls 4 and 5, and show the upper and lower shaft boxes 1 of the vertical roll 1.
A guide arm 15 is fixed inside the rods 2 and 13 via a key 14, and a hydraulic cylinder 16 is provided inside the guide arm 15, and the lower end of the rod of the hydraulic cylinder 16 has a horizontal axis and rotates. Vertical roll 1
End press rolls 4 and 5 are installed via bearings 17, and are located near the rolling material 3 so as to sandwich the rolled material 3 from above and below.

The upper and lower axle boxes 12 and 13 are provided with upper and lower cartridges 19 that can run on the upper and lower housings 6 and 7 in the width direction of the rolled material 3 via wheels 18.
20 through a fixing ring 21 so that it can only rotate freely. Upper and lower cartridge 19,
20 is restricted from upward movement by a keeper plate 22.

A worm wheel 23 is provided on the outer peripheral surface of each of the upper and lower axle boxes 12 and 13, and meshes with a worm wheel 24 provided on the cartridge cartridges 19 and 20. The worm 24 is supported by the cartridges 19 and 20 by bearings 25, and the motor 2
6. It is designed to be rotationally driven via a reduction gear 27 and the like. The fitting surfaces of the worm 24 and the worm wheel 23 are lubricated with grease mist.

Bearings 28 and 29 are attached to the upper side of the upper axle box 12 and the lower side of the lower axle box 13.
A balance cylinder 31 is connected to a block 30 connecting between 8 and 29, and the balance cylinder 31 allows the upper and lower axle boxes 12 and 13 of the vertical roll 1 to be rotated freely relative to the upper and lower axle boxes 12 and 13 by the last bearing 32.
It is pressed against the screw-down screw 33 assembled through the screw. In the figure, numeral 34 indicates a coupling provided on the driving piston 35 of the vertical roll 1.

To perform etching, first set the interval between the vertical rolls 1 and 2 (width reduction position of the material to be rolled 3) using the reduction screw 33, and then use the hydraulic cylinder 1.
6, the vertical spacing of each presser roll 4, 5, 10, 11 is set according to the plate thickness.

Next, the motor 26 drives the upper and lower axle boxes 12 and 1 through the worm 24 and the worm wheel 23.
3 is rotated horizontally around the vertical rolls 1 and 2, and the end press rolls 4 and 5, which are integrally attached to the upper and lower shaft boxes 12 and 13, are placed on the downstream side of the line of the rolled material 3 (as shown in FIG. 7). It is rotated by a predetermined angle θ in the same direction as the rotational direction of the vertical rolls 1 and 2). As a result, a force in the F direction acts on the rolled material 3 (F is the force P applied to the end presser rolls 4 and 5 multiplied by the friction coefficient μ), and this F is applied to the rolled material 3. When broken down into plate width direction _F1 and plate length direction _F2 , _F1 works to prevent buckling. Therefore, the end pressing rolls 4 and 5 have the effect of suppressing the occurrence of dog bones caused by the edger and at the same time spreading the rolled material 3 in the width direction, thereby preventing the occurrence of buckling.

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

According to the above-described rolling apparatus of the present invention, the following excellent effects can be achieved.

(i) It is possible to prevent buckling of the rolled material during width reduction rolling, and therefore the reduction amount per pass can be increased, so the number of passes can be reduced and rolling efficiency can be improved. .

(ii) Since the target width can be obtained by width reduction, yield can be improved.

(ii) Effective for width reduction of wide and thin plate materials.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of dog balls and buckling that occur during width reduction rolling, Fig. 2 is a diagram showing the width reduction limit at which backling occurs, Fig. 3 is an explanatory front view of an edger equipped with a buckling prevention device, Fig. 4 is an explanatory front view showing the end presser roll and its mounting structure, Fig. 5 is a view taken along the - line in Fig. 4, Fig. 6 is a view taken along the - line in Fig. 5, and Fig. 7. FIG. 2 is an explanatory diagram of the operation of the end presser roll. 1 and 2 are vertical rolls, 3 is a material to be rolled, 4 and 5 are end press rolls, 6 and 7 are upper and lower housings, 12,
13 is an upper and lower shaft box, 15 is a guide arm, 16 is a hydraulic cylinder, 19 and 20 are upper and lower cartridges, 2
1 is a fixed ring, 23 is a worm wheel, 24
is a worm, 26 is a motor, 27 is a reducer, 33
indicates a reduction screw.

Claims (1)

[Claims] 1 At a position near the left and right vertical rolls, a guide arm equipped with an end presser roll is fixed to the axle box of the vertical roll so as to sandwich the widthwise end of the material to be rolled from above and below, and the axle box is rotated. 1. A width rolling device, which is configured to be adjustable, and wherein the end presser roll can be rotated around the axis of the vertical roll and fixed in position.