JPH052403B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a roll shift device for a rolling mill.

[Prior Art] Making the work rolls, intermediate rolls, etc. of a rolling mill shiftable in the axial direction and adjusting the shift position is effective in controlling the thickness of the rolled material in the width direction, and also in controlling the thickness of the work rolls. It is extremely effective in preventing uneven wear.

In a conventional roll shift device, a movable body connected to an end of a roll to be shifted and a moving mechanism for moving this movable body are completely separate. For example, a movable body is connected to the end of the roll, and a hydraulic cylinder as a moving mechanism is simply interposed between the movable body and the housing of the rolling mill. The hydraulic cylinder and the movable body are arranged in series along the axial direction. For this reason, the roll shift device itself becomes large, especially in the axial direction of the rolls, which is disadvantageous in terms of space.
Furthermore, it is not possible to provide such a large roll shift device at the end of the roll where the roll rearrangement work is to be performed, and the location of the device is inevitably located at the other end of the roll. There was a restriction as mentioned above.

[Problems to be Solved by the Invention] The present invention has a configuration in which a movable body connected to the end of the roll and a moving mechanism for moving the movable body are intensively combined, so that the device itself can be improved. Particularly small in the axial direction of the roll,
It is an object of the present invention to provide a roll shift device for a rolling mill that is advantageous in terms of space and can be installed also at the end of the roll on the side where the rolls are changed.

[Means for Solving the Problems] A roll shift device for a rolling mill according to the present invention includes a shift arm that protrudes in the rolling line direction at an end of a roll shaft box, and a shift arm that is mounted on the housing side of the rolling mill. a movable cylinder movable along the roll axis direction is disposed close to the tip of the shift arm, a connecting body capable of engaging with the tip of the shift arm is provided on the outer side of the movable cylinder, and a cylinder of the movable cylinder A rod having a piston in the middle that is fitted from the roll axis direction is passed through the chamber, and
It has a structure in which both ends of the rod are held.

[Operation] Therefore, by moving the movable cylinder using hydraulic pressure, the roll can be shifted in the axial direction.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a shift arm 3 that protrudes in the rolling line direction is provided at the end of the axle box 2 of the roll 1, and a shift arm 3 that projects in the rolling line direction is provided on the rolling mill housing 4 side. A movable cylinder 5 movable in the axial direction of the roll 1 at an opposing position is provided as a movable body, and the movement of the movable cylinder 5 is controlled by protrusions 6 provided above and below itself, and protrusions 6 provided on the housing 4 side. and a guide body 8 having a guide groove 7 that fits therein.

A groove 9 is provided on the outer periphery of the movable cylinder 5, and a connecting body 10 is fitted into the groove 9. The connecting body 10 is made up of a combination of structural members 10a and 10b, and has a second
As shown in the figure, it has a square frame shape. Also, the connecting body 10
The rod of the cylinder 11 attached to the movable cylinder 5 is connected to the component 10b of the cylinder 1.
The connecting body 10 is configured to be able to move in the left-right direction in the figure, that is, in the direction of the rolling line, by the expansion and contraction movement of one rod.

A notch 12 is provided on the outside of the connecting body 10 at a location facing the tip of the shift arm 3.
The notch 12 forms a fitting part for the tip of the shift arm 3 together with a part of the groove 9 of the movable cylinder 5, and when the connecting body 10 moves to the left,
As shown in FIG. 1, it fits into the tip of the shift arm 3 to connect the shift arm 3 and the movable cylinder 5.

A piston 14 is slidably fitted into a cylinder chamber formed in the movable cylinder 5.
4 protrudes from both ends of the movable cylinder 5, and one end of the rod 13 is placed on the housing 4 side.
Further, the other ends of the rods 13 are fixedly supported by the bent portions 15 of the guide body 8, respectively. Further, by supplying pressure fluid from the outside to chambers 16 and 17 formed on both sides of the piston 14, the movable cylinder 5 is configured to be able to move in the axial direction of the roll 1.

In such a configuration, the movable cylinder 5, which is a component of a moving mechanism for moving the roll 1, is used as it is as the movable body connected to the end of the axle box 2 of the roll 1. By connecting the movable cylinder 5 to the shift arm 3 on the roll 1 side by the coupling body 10 and reciprocating the movable cylinder 5, the roll 1 can be appropriately shifted in its axial direction.

By the way, in the above, since there is a gap between the movable cylinder 5 and the guide body 8 to allow the movement of the movable cylinder 5, the movable cylinder 5 has a tendency to move in the circumferential direction when moving in the axial direction. A force is generated. This force is larger as the gap is larger, and an unreasonable force is applied to the rod 13 accordingly. However, in the present invention, since both ends of the rod 13 are loosely connected, the rod 13 is bent, galled, and the rod 13 is not bent.
Seizure between 3 and movable cylinder 5, movable cylinder 5
This prevents packing wear, etc., and allows the roll 1 to be shifted safely and stably.

[Effects of the Invention] As explained above, according to the roll shift device for a rolling mill of the present invention, the shift arm provided at the end of the roll shaft box is connected to the outer side of the movable cylinder,
Since the piston side of the movable cylinder is fixed,
The roll axis dimension can be reduced, and as a result,
It is advantageous in terms of space and can provide excellent effects such as being able to be installed at the end of the roll on the side where the roll changeover work is performed.

[Brief explanation of drawings]

FIG. 1 is a cutaway plan view of the apparatus of the present invention, and FIG. 2 is a view taken along the - arrow in FIG. 1 is a roll, 3 is a shift arm, 4 is a housing, 5 is a movable cylinder, 10 is a connecting body, 13 is a rod, and 14 is a piston.

Claims (1)

[Claims] 1. A shift arm is provided at the end of the roll shaft box, a movable cylinder movable in the roll axis direction is arranged close to the tip of the shift arm on the rolling mill housing side, and the shift arm is disposed on the outside of the movable cylinder. A connecting body capable of engaging with the tip of the arm is provided, and a piston is fitted into the movable cylinder, and a rod of the piston protrudes from both ends of the movable cylinder, and both ends of the rod are held. A roll shift device for a rolling mill.