JPS6033822A - Method and device for shifting roll in roll leveler - Google Patents

Abstract

PURPOSE:To improve the durability of a roll and its operating efficiency by using the roll while shifting it in its axial direction for preventing the roll from generating defects and dispersing the defects. CONSTITUTION:When a defect such as roll wear generates a little in the surface of a leveling roll 2, a cylinder 10 is extended as shown by the imaginary line to move a holding frame 9, which holds a roll chock 7 through a bracket 12, along a supporting bed 8. The leveling roll 2 is shifted in the axial direction in a state of being mounted on a backup roll 3. By performing properly said operation at every pass, a defect generating in the roll 2 is dispersed uniformly in its axial direction; then the durability of roll 2 is improved, and the frequency of roll replacement is reduced.

Description

[Detailed description of the invention] The present invention relates to a shifting method and device.

Generally, in order to straighten the strip,
As shown in FIG. 1, a roller leveler is used in which a plurality of leveling rolls (2) are arranged to alternately hold the IJ knob (1) from its upper and lower surfaces. Each leveling roll (2) is supported by a split backup roll (3) so as to provide reinforcement and flexible life.

However, since these roller levelers are provided with a split backup roll (3), as shown in FIG. Roll defects (4) such as indentations caused by scale and foreign matter biting, and convex protrusions caused by improper selection occur, and these defects (4) are transferred to the strip (1), resulting in so-called roll defects that impair product quality. Conventionally, when such a defect (4) occurred on the leveling roll (2), it was frequently replaced with a new roll, and the old roll was polished in the meantime. In addition to being troublesome to replace the rolls, the roller leveler must be stopped when replacing the rolls, resulting in a decrease in operating efficiency.Moreover, a large number of spare rolls are required, which is economically disadvantageous.

In view of these circumstances, the present invention aims to extend the life of the roll by appropriately shifting the roll in the axial direction, thereby preventing roll defects and dispersing them, thereby increasing the operating rate. This aims to achieve the following: reduction in the number of spare rolls, high quality S), IJ knob straightening, etc.

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

Figure 6 shows one end of the lower side of a roller leveler similar to that shown in Figure 1 (B).
), each backup roll (3) supporting a wedge mechanism (
5) etc., the holding frame (9) is shown arranged on the base frame (6) so that the pressing force on the leveling roll (2) can be adjusted. It is placed on the pedestal (8) provided at the end of the intervening base frame (6), and the holding frame (9)
Connect the bracket 0 fixed to the horizontal cylinder OD installed on the base frame (6), and
Due to the expansion and contraction movement of the bracket 1112. Holding frame (9)
, so that the leveling roll (2) can be shifted in the axial direction via the axle box (7).

Therefore, if a slight defect such as abrasion on the surface of the leveling roll f21 occurs, the cylinder 001 is extended, for example, as shown by the imaginary line, and the holding frame (9) that holds the axle box (7) is attached via the bracket (121). is moved along the pedestal (8), and the leveling roll (2) is shifted in the axial direction while riding on the backup roll (3).

By performing this operation appropriately for each pass, defects occurring on the leveling roll (2) can be made uniform in the roll axis direction, extending the life of the leveling roll (2) and reducing the need for roll replacement. .

FIG. 4 shows a second embodiment of the device of the present invention, in which the intermediate part is attached to the base frame (6) or (d) to the lower part of the pedestal (8) by means of a pin (141). of,
It is connected to the bracket (12) fixed to the holding frame (9) of the axle box (7) at a pitch θ, and the lower end of the lever αD is connected to the horizontal cylinder θQ by a pin.

When such a system is adopted, when the cylinder aα is extended or contracted, the lever 01) rotates about the pin 041, so that the leveling roll (2) is shifted in the axial direction along an arcuate trajectory while being raised. It is possible.

Therefore, during shifting, the leveling roll (2) does not slide against the backup roll (3), thereby preventing scratches. In addition, if a long hole (field) as shown by the imaginary line is provided in the connecting part of the lever θ]) to the pin (13), the leveling roll (2) can be moved in the axial direction as shown in Fig. 3. It can only be moved.

FIGS. 5 and 6 show a sixth embodiment of the device of the present invention, in which a lifting and lowering 7 cylinder (161 The end of the axle box (7) is engaged with the lifting guide (17 (L)) of the guide block 0η so that it can rise and fall freely, and the guide block 0η is attached to the horizontal guide θ■ attached to the mark α on the housing.
horizontally movably engaged with the guide block 0η
The body of a horizontal cylinder (goods) in which the rod protrudes on both sides is fitted, and both ends of the rod are fixed to both end surfaces of the horizontal guide OI.

In this case, if only the horizontal cylinder (A) is operated, the guide block αη, which is integrated with the body of the horizontal cylinder (A), will slide along the horizontal guide α1, similar to that shown in Fig. 3. The leveling roll (2) can be shifted linearly. On the other hand, if the lifting cylinder (IIil is extended, the horizontal cylinder QO is operated, and the eyebrow lowering cylinder 06) is contracted, the axle box (7) will move up and down along the lifting guide (17a) of the guide block 0η, so the leveling Once the roll (2) is separated from the backup roll (3), it moves in the axial direction, and then it moves back to the backup roll (3).
3) A linear steric transfer tangent to 3) is obtained. Of course, if the lifting cylinder 061 and the horizontal cylinder (A) are operated in conjunction with each other, the leveling roll (2) can be moved as shown in FIG.
) can be shifted in an arc.

In the case of the sixth embodiment, a screw rod may be used instead of the cylinder (A), and the lifting cylinder α
A worm jack may be used in place of Q, and a link may be used in place of the lifting cylinder Q61, although it will no longer be possible to move up and down in a straight line.

FIG. 7 shows a fourth embodiment of the device of the present invention, in which the connections between the axle box (7) and the guide block 07), the guide block 07) and the horizontal guide 09 shown in FIG.
In addition, the vertical cylinder 061 and the horizontal cylinder □□□ are installed oppositely. That is, an elevating guide o4 is attached to the housing QIO, a horizontal guide (17b) is provided to the guide block 07) that engages with the elevating guide 09', and a horizontal guide (17b) is provided to the elevating cylinder Qfil, the guide block 0η and the base frame (6). It has a configuration in which the horizontal cylinder Q■ is placed between the holding frame (9) and the holding frame (9).

Even with such a system, the same effects as in the third embodiment can be obtained.

FIGS. 8 and 9 show a fifth embodiment of the device of the present invention, in which a holding frame (9) and a base frame (6) are opposed to each other through spherical bearings Q3, respectively. A so-called trouble mechanism is constructed by connecting a horizontal cylinder 0 (1) between the arranged links ff111 +29 and (2).

In the case of this system, the leveling roll (2) can be raised and lowered by the expansion and contraction movement of the cylinder 001, and further the leveling roll f21 can be shifted in the entire axial direction by the method shown in FIG. 3 or the like. However, when shifting in the axial direction, the trouble mechanism swings by the spherical bearing 123+ as shown in FIG.

The fifth embodiment shows a leveling roll (2) supported by an axle box (7) with a multi-divided structure, and the other embodiments show a leveling roll (2) supported by an axle box (7) with an integrated structure (a leveling roll (2) supported by force).
This means that generally in roller levelers, split axle boxes and integrated axle boxes are used depending on whether they are large or small, and the present invention can be adopted for any roller leveler. are doing. Further, in each of the embodiments described above, the lower part of the roller leveler has been described, but it goes without saying that the same can be applied to the upper part.

By the way, in addition to the method in which the leveling roll (2) is directly supported by the backup roll (3) as shown in Fig. 1 (B), the roller leveler also has a method in which the leveling roll (2) is supported via an intermediate roll. Backup roll (3)
There is also a so-called bHi system in which the roller leveler is supported by a 6Hi system, but in such a 6Hi system roller leveler, similar effects can be obtained by adopting each of the embodiments described above for the intermediate roll.

In place of the lift cylinder aQ1 and the shift cylinder (to), a binion rack or a screw nut may be used, and a member that maintains the distance between the left and right roll axle boxes may be used.

As explained above, according to the present invention, (1) Defects such as wear scratches occurring on the rolls supported by the split support rolls can be dispersed in the roll axis direction, thereby extending the lifespan of the rolls. extend.

(11) From the above item (1), since the number of roll replacements is reduced, the number of spare rolls can be reduced.

The downtime of the drawing roller leveler is shortened, improving the operating rate.

IIψ Roll polishing time is reduced It can produce excellent effects such as

[Brief explanation of drawings]

Figure 1 (B) is an explanatory diagram showing the outline of the roller repeller, Figure 2 is an explanatory diagram corresponding to the ■-n direction arrow view of Figures 1 (5) and (B), and Figure 3 is the first part of the device of the present invention.
FIG. 4 is a partial front view showing the second embodiment, FIG. 5 is a partial side view showing the sixth embodiment, and FIG.
The figures are a view from the ■-V+ arrow in FIG. 5, FIG. 7 is a partial side view showing the fourth embodiment, and FIG. 8 is a schematic side view showing the fifth embodiment.
FIG. 9 is a view from the ■-■ arrow in FIG. 8. (1) Stritz, (2)...Leveling roll,
(3)...Backup roll, (6)...Base frame, (7)...Axle box, (9)...Holding frame,
θ (g)...Horizontal cylinder, +I11...Lever, 0
ri...Bracket, α...Lifting cylinder, a7)
...Guide block, wire...housing.

Claims (1)

[Claims] 1) A roll shifting method in a roller leveler, which comprises linearly moving a roll supported by a support roll in an axial direction. 2) A method for shifting rolls in a roller leveler, characterized in that the roll supported by the support roll is once separated from the support roll, moved in the axial direction, and then brought into contact with the support roll. 3) A roll shift method for a roller leveler, characterized in that the roll supported by the support roll is moved away from the support roll and brought into contact with it again, in association with an operation of moving the roll in the axial direction. 4) A roll shift device for a roller leveler, characterized in that the roller leveler is provided with a device for moving a roll supported by a support roll in the axial direction. 5) A roll shift device for a roller leveler, comprising a device for moving a roll supported by a support roll in the axial direction and a device for raising and lowering the roll. 6) A roll shift device for a toss roller leveler, characterized in that the roller leveler is equipped with a device that simultaneously moves the roll supported by the support roll in the axial direction and in the vertical direction.