JPS6236762B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rolling mill that can produce rolled products with uniform strip width edges and can significantly improve yield.

Conventionally, rolled plates were rolled to the desired thickness using a rolling mill, but since both width edges of the rolled plate were not restrained during rolling, edge drop and edge elongation phenomena occurred at both width edges of the rolled plate. Therefore, after rolling, the width ends of both sheets are cut off using a side trimmer, but this is not preferable from the viewpoint of yield.

The present invention relates to a rolling mill made in view of the above-mentioned circumstances, in which plastic restraint plates are respectively disposed between both ends of opposing work rolls, and tension is generated at the outlet end and the inlet end of these plastic restraint plates. The present invention is characterized in that it includes a moving cylinder that connects the cylinders and moves the plastic restraining plate in the width direction of the work roll.

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

1 is a housing; 2 and 3 are facing work rolls in which an axle box is supported in the housing 1 so as to be movable up and down; 4 and 5 are back up rolls in which the axle box is supported in the housing 1 in a movable manner; 6 and 7 1 is a universal joint that connects the shafts of the work rolls 2 and 3 and the drive shafts 8 and 9, and 10 is a rolling plate.

Plastic restraining plates 11, 1 made of plastically deformable material
A guide member 13 is disposed between both ends of the opposing work rolls 2 and 3, respectively, and a guide member 13 is installed in the same direction as the axial direction of the work rolls 2 and 3 at a place that does not interfere with the rolling line on the exit and entry sides. and 14, two support stands 15 are slidably attached to the guide member 13 to support the cylinder 16 rotatably in the same direction as the rolling line, and the guide member 14 is also provided with a Two support stands 17 are slidably mounted to support the cylinders 18 so as to be rotatable in the same direction as the rolling line. Further, the inlet ends of the plastic restraint plates 11 and 12 are connected with pins to the piston rod tips of the cylinders 16, and the outlet ends of the plastic restraint plates 11 and 12 are connected with pins to the piston rod tips of the cylinders 18, so that the cylinders 16 and 18 are Plastic restraint plates 11, 12
Cylinders 21 and 22 are rotatably attached via brackets to swivel tables 19 and 20 which are rotatably disposed outside both ends of the work roll 3 so as to be able to generate appropriate tension.
The tip of the piston rod 22 is plastically restrained by plates 11 and 1.
2 so that the plastic restraint plates 11 and 12 can be moved together with the cylinders 16 and 18 in the axial direction along the work roll 3 by the cylinders 21 and 22.

When setting the gap between the work rolls 2 and 3, plastic restraint plates 11 and 12 are set between the work rolls 2 and 3, and these work rolls 2 and 3 roll the material to a desired thickness. At that time, the plastic restraint plates 11 and 12 are held by the cylinder 16 so that they do not come out on the exit side, and tension is generated to exceed the rolling limit, so that the plastic restraint plates 11 and 12 slip between the work rolls 2 and 3. to be in a state of being Next, the cylinders 21 and 22 adjust the interval between the plastic restraining plates 11 and 12 according to the set plate width, and rolling is performed. During this adjustment, cylinder 1
6 and 18 slide along guide members 13 and 14.

By rolling as described above, the rolled plate 1
0 is constrained to the set plate width by the plastic restraint plates 11 and 12 during rolling. Therefore, it is possible to produce rolled products with uniform plate width edges, which means that the trimming allowance can be reduced and the cost can be greatly reduced. Yield can be improved.

When changing to a thin plate, the distance between the work rolls 2 and 3 is narrowed to make the plastic restraint plates 11 and 12 to the desired thickness, and the plastic restraint plates 11 and 12 are held and rolled by cylinders 16 and 18, and these plastic restraint plates 11 and 12 are attached to the work rolls. 2,
cylinders 21 and 22.
Rolling is performed after adjusting the spacing.

In addition, when changing to a thick plate, the work roll 2 is appropriately raised as shown in FIGS. 3A to 3B,
In this state, operate the cylinders 16 and 18 so that the thick parts of the plastic restraint plates 11 and 12 are located on the upper surface of the work roll 3, and then set the work roll 2 as shown by the solid line from the imaginary line in FIG. 3C. The plastic restraining plates 11, 12 are rolled to a desired thickness by descending to the spacing, and the cylinders 16, 18 hold the plastic restraining plates 11, 12 in a sliding state between the work rolls 2, 3. cylinder 21,
22, the interval between the plastic restraint plates 11 and 12 is adjusted and rolling is started.

The present invention is not limited to the illustrated and described embodiments; for example, it is possible to provide a moving device for the cylinders 16 and 18 to operate in synchronization with the cylinders 21 and 22, and to move the plastic restraint plate in the longitudinal direction. It is optional to use shapes with different thicknesses or shapes with a uniform required thickness, and it goes without saying that various changes can be made without departing from the gist of the present invention.

As described above, according to the rolling mill of the present invention, (i) Can prevent camber.

(ii) Edge drop can be significantly reduced.

(iii) It is possible to produce rolled products with uniform strip width edges, that is, the trimming allowance can be reduced and the yield can be significantly improved.

(iv) It is advantageous because the plate width and thickness can be easily adjusted to the required values by remote control.

Demonstrates excellent effects such as

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the rolling mill of the present invention seen from the entry side, Fig. 2 is a view in the direction of Fig. 1, Fig. 3 is A,
B and C are explanatory diagrams showing the case where plate thickness is set in the rolling mill of the present invention. 2, 3...Work roll, 10...Rolled plate, 1
1, 12... Plastic restraint plate, 13, 14... Guide member, 16, 18, 21, 22... Cylinder.

Claims (1)

[Claims] 1 Placing plastic restraint plates between both ends of the opposing work rolls, connecting tension generating cylinders to the exit and entry ends of these plastic restraint plates, and moving the plastic restraint plates in the width direction of the work rolls. A rolling mill characterized by being equipped with a moving cylinder for rolling.