JPS6152914A - Rolling mill - Google Patents

Abstract

PURPOSE:To make a maintenance and inspection works easier by providing a guide frame movably vertically for a housing and by engaging a roll journal box movably in the axial core direction for the guide frame, etc. CONSTITUTION:Guide frames 6, 7 are provided movably vertically for housings 4, 5 and journal boxes 2, 3 are movable in the axial core direction by engaging with the grooves 9, 10 of guide frames 6, 7. A shifting cylinder 12 is also provided on a connecting frame 11 and a roll 1 is shifted in the axial core direction with the motion thereof. A bending cylinder 13 is also arranged respectively on the guide frames 6, 7. With said mechanism a roll exchanging work is easily performed with the motion of the shifting cylinder 12 after removing an engaging member 8 from the frame 7. Due to the shifting device, journal boxes 2, 3 and roll 1 being pulled out as a one body, the maintenance and inspection works are made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rolling mill whose rolls can be shifted in the axial direction.

[Conventional technology]

In recent years, rolling mills have been developed in which the work rolls can be shifted in the axial direction in order to eliminate step wear on the rolls and to better control the shape of the rolled material. In such a conventional shift rolling mill, as shown in FIG. 5, the shaft box (b) supporting one work roll (α) is
- An arm (d) is provided so as to protrude further outward in the roll axis direction from the housing (C), and a shift cylinder (torque) attached to the bracket (g) fixed to the housing (C) is attached to the arm (d). ) and engage the shift cylinder (7'
) is generally used to shift the work roll (0) in the axial direction via the arm (d) and the axle box (6).

[Problem that the invention seeks to solve]

However, in such conventional rolling mills, the shift cylinder and platen (e), etc.
), maintenance and inspection are difficult.
In addition, if these are installed on the working side, it is inconvenient to replace the rolls, and if they are installed on the blade drive side, it is difficult to attach and remove spindle rests, etc., and when replacing the rolls, it is difficult to replace the rolls. (6) had to be removed from the shift cylinder (1), making the work extremely troublesome.

[Means for solving problems]

In the present invention, a roll axle box is movably engaged in the roll axis direction with a guide frame that is provided to be movable up and down with respect to the housing, and a shift device is provided between the one axle box and the axle box side guide frame. In addition, a bedding device is installed on at least one of the axle box and the guide frame.

[For production]

Therefore, when replacing the rolls, the shift device is pulled out of the housing together with the axle box.

〔Example〕

The present invention will be described in detail below with reference to the drawings. In Figures 1 and 2, (1) is a roll that can be soft in the axial direction, (2) and (3) are the rolls of the roll (1). axle box,
(41+5.1 is the housing, drive side axle box (2
) is provided so that it can be raised and lowered relative to the housing (4) via the guide frame [6) +6), and one working axle box (
3) with respect to the housing (5).
It is provided so that it can be raised and lowered via the locking member (7) and can be attached and detached via the locking member (8). The guide frame (61 (6) and (knife) are provided with a guide groove (91 (
The IOJ is recessed, and the guide groove (91 (101) has an axle box (
2) (3+ is slidably engaged. Also, a connecting frame circle is provided between the outer ends of the guide frame (71 (71), a soft cylinder (1) is installed on the connecting frame αυ, and The rod end of the 77 ton cylinder (121) is connected to the end face of the axle box (3) so that the roll (1) can be shifted in the axial direction by the operation of the shift cylinder α.Furthermore, the guide frame (6) (61 and (71(7)
benzo ink cylinders (13) are provided at the top and bottom of the
Each of the pedding cylinders α9 is connected to a roll axle box or similar guide frame located above and below the roll (1).
61(7).

In such a configuration, when the roll (1) is shifted in the axial direction, the axle box (21 (3)) and each guide frame (6) (force and The roll (1) is moved by sliding.

When replacing the roll (1), after removing the locking member (8) from the guide frame (7), pull out the roll (1) from the housing (4) (51) every time the axle box (2) (31) is removed. At this time, the shift cylinder (12) is integrated with the axle box (3), and is also integrated with the guide frame (7) (force) via the connection frame αυ, so the roll (1
) When the guide frame (7) is pulled out, it is simultaneously pulled out together with the connecting frame (11), etc.

Therefore, the work when pulling out the roll (1) is performed in the same way as in the case of a rolling mill without a shift device, so the roll replacement work can be easily performed, and furthermore, the maintenance and inspection of the shift cylinder (121) is also easy. becomes.

3 and 4 show other embodiments of the present invention,
The bending cylinder U is installed on the axle box (2) (31 side), and the guide frame (61 (7)) is installed in the guide groove (9) of the guide frame (61 (7)).
It is made to abut on the upper and lower surfaces of the Qo1 section.

In the figure (14J is a balance cylinder.

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.

〔Effect of the invention〕

As explained above, according to the rolling mill of the present invention, the shift device and the axle box are integrated so that the shift device can be pulled out of the housing at the same time when replacing rolls. This provides an excellent effect in that maintenance and inspection work can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing the main parts of the rolling mill of the present invention.
The figures are a view taken along the ■-■ arrow in FIG. 1, FIG. 3 is a schematic plan view showing another embodiment of the present invention, and FIG. 4 is a view taken along the ■-■ arrow in FIG.
FIG. 5 is an explanatory diagram of a conventional example. (1) is a roll, (2) (3) is an axle box, (4) (5
1 is the housing, (6) (7) is the guide frame, (
9) α0) is the guide groove, (12) is the soft cylinder, α
indicates a bending cylinder. Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1) In a rolling mill in which the rolls can be shifted in the axial direction, the roll axle box is movably engaged in the axial direction with a guide frame provided movably up and down with respect to the housing, and the one axle box A rolling mill characterized in that a shift device is provided between the axle box and the axle box side guide frame, and a bending device is further provided on at least one of the axle box and the guide frame.