JPS61132209A - Roll device for rolling mill - Google Patents

Abstract

PURPOSE:To improve a rolling mill in space and handling workability by finishing a roll itself with a shifting mechanism. CONSTITUTION:Cylinder chambers 3a, 3b are formed at both ends of a roll barrel 2 in recessed forms, and roll shafts 4a, 4b are slidably inserted into the chambers 3a, 3b so that they function as pistons, and the axial ends of shafts 4a, 4b are supported by bearing boxes 5a, 5b respectively. Further, the bearing boxes 5a, 5b are connected together and fixed by means 6, 6, and the barrel 2 and the shafts 4a, 4b are fixed together through keys 15 to be rotatable in one body, to form a roll device 1, which is mounted on the housing 10a, 10b of a mill through the beams 6, 6. The barrel 2 is moved in its axial direction to set it at an optical shifting position, by charging and discharging a pressurized oil, from/to a pressurized-oil supplying device to/from the chambers 3a, 3b through rotary joints 8a, 8b and oil passages 7a, 7b provided to the shafts 4a, 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a roll device for a rolling mill (2) equipped with a roll having a shift mechanism.

[Conventional technology]

In recent years, rolling mills have been developed in which the work rolls can be shifted in a fine direction in order to eliminate step wear on the rolls and to better control the shape of the rolled material, such as edge drop. In such a conventional shift rolling mill, as shown in FIG. A bracket (el is fixed to the cylinder c+, and a shift cylinder (f) is attached to the bracket (gl), and the rod end of the shift cylinder V+ is attached to the arm (dl).
The arm (dl) is engaged by the telescopic movement of the shift cylinder (fi).

A common method is to shift the work roll (α) in a narrow direction (-shift) through an axle box <b).

[Problem that the invention seeks to solve]

However, in the case of such a conventional shift rolling mill, the bracket (e) supporting the shift cylinder (-) and the shift cylinder σ) protrude around the nozzle (C). There were problems in terms of space and ease of handling, and there was also the problem of having to remove the shift cylinder V1, bracket, etc. each time the roll was replaced.

The present invention improves the space and handling workability by providing the roll itself with a shifter groove, and also makes it easier to replace the roll.

[Means for solving problems]

The present invention has cylinder chambers recessed from the end face of the roll parel at the axial center positions of both ends of the roll parel, and a roll shaft is slidable (=inserted) into each cylinder chamber.
The shaft end of each roll shaft is supported by an axle box, and the two axle boxes are connected by a beam to unload the structure.

[For production]

Therefore, by supplying fluid to the cylinder chamber, the roll pallet is moved down in the fine direction without moving the position of the axle box.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in Fig. 1, a cylinder chamber (3α) C3b) is recessed at the axial center position of both ends of the roll parel (2) and has a required depth and diameter from the end face of the roll parel (2).
A roll shaft (4α) (4b) is slidably inserted into each cylinder chamber (3α) C3b) so as to function as a piston, and each roll shaft (4α) C44)
The shaft ends of the shaft boxes (5α) and (5b) are respectively supported by the shaft boxes (5α) and (5b), and the front and rear surfaces of the shaft boxes (5α and 5b) are connected and fixed by a beam (61 (61+2), and the roll shaft (4α)C4b) (= means pressure oil passage (7α) (1) that leads from the shaft end to the cylinder chamber (3α) (3b) (1)
A pressure oil supply device (not shown) is introduced into the pressure oil passage (7α)C7h) via a rotary joint (8α)Cab) at the shaft end of the roll shaft (4cL) (4A). connection). The roll parel (2) and the roll shaft (4α) C4b) are integrated (key α51 (or spline) (=therefore, engaged) so that they can rotate once. (9) indicates a sealing member.

When the roll device (1) having such a configuration is installed in a rolling mill for convenient use (= means a beam (61) connecting the axle boxes (5α×5h) to the rolling mill housing (10α)
Attach it to the window section (10, 6). αυ is a clamping tool.

Therefore, in the roll device (1) of the present invention (-, the rotary joint (8α) (8b),
The cylinder chamber (3α) (
3b) By supplying and discharging the bending force inside the roll pallet (2), the roll pallet (2) is moved in the fine direction, so that an arbitrary shift position can be obtained between the position indicated by the dashed-dotted line and the position indicated by the dashed-double-dotted line. be able to.

At this time, the position of the axle box (5α) C56) in the fine direction is fixed by the beam (61 (61)), so even if it is used as a work roll of a four-high rolling mill as shown in Figure 2,
As shown in Fig. 3, it is easy to install a bending device (1) even when used as a support roll such as an intermediate roll and a backing roll of a multi-high rolling mill. In addition, in Figure 2.3, u
3) shows the backup roll, and Fig. 3 (= α← shows the work roll.

In addition, in the above, the roll device (1) (= does not have a shift cylinder that is actually raised to the outside of the housing (10a) (lOb) as in the conventional case, so the area around the nozzle is simplified and the space is saved. It is advantageous in terms of handling and workability.Furthermore, when changing rolls, the clamp tool αυ
After separating the beam (6) (61) from the housing (1
0α) (10,6), it can be collected all in one piece, making it convenient to perform the work easily and quickly.

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

As explained above, according to the rolling mill roll device of the present invention, the shift mechanism is mounted on the roll itself, so when used with the rolling mill housing (= installed), the surroundings of the housing are simplified and the space is reduced. , it is improved in terms of handling workability (=, it is easy to change rolls,
Excellent effects such as these can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a cutaway plan view of a roll device for a rolling mill according to the present invention, FIGS. 2 and 3 are explanatory diagrams showing an example of use of the roll device for a rolling mill according to the present invention, and FIG. 4 is a conventional shift rolling mill. FIG. (2) is the roll parel, (3α) C3b) is the cylinder chamber, C4 (L) C4b) is the roll shaft, (5α) (5
b) shows the axle box, and (6) shows the beam.

Claims (1)

[Claims] 1) Cylinder chambers are recessed from the end face of the roll parel at the axial center positions of both ends of the roll parel, and a roll shaft is slidably inserted into each cylinder chamber, and the shaft end of each roll shaft is A roll device for a rolling mill, characterized in that the roll device is supported by an axle box, and the two axle boxes are further connected by a beam.