JPS6046816A - Method and equipment for shifting roll of roller leveler - Google Patents

Abstract

PURPOSE:To disperse an abrasion of a roll, and to extend a life of the roll by separating the roll which contacts to an intermediate roll of a roller leveler of a 6Hi system, from the intermediate roll, and thereafter, moving the intermediate roll in the axial core direction. CONSTITUTION:In a roller leveler of a 6Hi system constituted so that a leveling roll 2 is supported by a backup roll 4 through an intermediate roll 3, if a roll abrasion is generated even a little in the intermediate roll 3, the leveling roll 2 is separated from the intermediate roll 3 by expanding a lifting cylinder 12, and thereafter, the intermediate roll is shifted in the axial core direction by expansion and contraction of a shifting cylinder 13, and a relative position of the intermediate roll 3 and other roll is shifted suitably. In this case, it can also be executed that the intermediate roll 3 is further separated from a backup roll 5 and shifted by operating a cyliner 9. Said operation is executed at a suitable interval, and a roll abrasiion generated in the intermediate roll 3 is dispersed uniformly in the axial core direction, by which a life of the intermediate roll 3 and the leveling roll 2 can be extended.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll shifting method and apparatus for a 6Hi type roller leveler.

Conventionally, as shown in FIGS. 1A and 1B, a plurality of leveling rolls 2 are arranged so as to alternately sandwich the strip 1 from the upper and lower surfaces thereof, and in order to give an arbitrary pressure distribution to the leveling rolls 2, A 16Hi type roller leveler is known in which a leveling roll 2 is supported via an intermediate roll 3 by a backup roll 4 whose pushing force is variable.

However, since these roller levelers are provided with a backup roll 4, roll wear and roll marks occur on the intermediate roll 3, and furthermore, this oil wear and the like is transmitted through the leveling roll 2 and causes stripping. 1, causing deterioration in product quality.

Conventionally, when this type of roll wear occurred on the intermediate roll 3, it was frequently replaced with a new roll and the old roll was polished in between, which made the roll replacement work troublesome and required roll replacement. At times, the entire roller leveler must be stopped, resulting in a reduction in operating efficiency, and also requiring a large number of spare rolls, which is economically disadvantageous.

In view of these circumstances, the present invention was made in order to provide a roller leveler in which the intermediate roll is shifted in the axial direction at appropriate intervals to prevent roll wear caused by the backup roll from being transferred to the product.

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

Figure 2 shows an embodiment of the present invention, and Figure 1 (A)
It is a diagram corresponding to the ■-■ arrow view of FIG.

A mocking mechanism 15 is provided between the axle box 5 that supports the backup roll 4 and the top frame 6, and the backup roll 4 is
is pressed against the leveling roll 2 via the intermediate roll 3, and an axial guide 8 is fixed to the shaft box γ of the intermediate roll 3, and an elevating cylinder 9 installed on the top frame 6 is connected to the guide 8. Similarly, an axial guide 11 is fixed to the axle box 10 of the leveling roll 2, and the top frame 6 is attached to the guide 11.
The rod ends of the lifting cylinders 12 installed in the housings are slidably engaged with each other, and the shift cylinders 13 and 14 attached to the housings are connected to each of the axle boxes 7 and 10.

With this configuration, if a slight amount of roll wear occurs on the intermediate roll 3, the leveling roll 2 is lowered and separated from the intermediate roll 3 by extending the cylinder 12 (see Fig. 3). By expanding and contracting the shift cylinder 13, the intermediate roll 3 is shifted in the axial direction, thereby appropriately shifting the relative positions of the intermediate roll 3, the leveling roll 2, and the backup roll 4.

At this time, as shown in FIG. 4, the intermediate roll 3 may be lowered by the operation of the cylinder 9 and shifted further away from the backup roll 4. Incidentally, when the intermediate roll 3 is shifted, the guide 8 of the axle box 7 and the rod end of the cylinder 9 slide. Thereafter, the cylinder 12 is contracted to return the leveling roll 2 to its original position.

By performing this operation for each pass as appropriate, roll wear occurring on the intermediate roll 3 can be uniformly distributed in the axial direction, thereby extending the life of the intermediate roll 3 and even the leveling roll 2. This reduces the number of roll changes and improves product quality.

In addition, in the above, since the leveling roll two-shaft box 10 is also provided with a guide 11 that can slide on the rod end of the lifting cylinder 12, by expanding and contracting the cylinder 14,
An operation may be performed to shift the leveling roll 2 in the opposite direction to the intermediate roll 3.

5- FIG. 5 shows another embodiment of the present invention, in which the cylinder 1 has the axis of the backup roll 4 in the top frame 6.
6, and the backup roll 4 is pressed against the leveling roll 2 via the intermediate roll 3 by the cylinder 16. In this roller leveler, a shift cylinder 13 is connected to the axle box 3 of the intermediate roll 3. be.

In the case of this method, the cylinder 16 is contracted and the backup roll 4 is separated from the intermediate roll 3 (
(see Fig. 6), the intermediate roll 3 is moved by the shift cylinder 13.
to shift in the axial direction. Of course, similarly to the embodiment described above, the shift cylinder 14 may be connected to the shaft 10 of the leveling roll 2 to shift the leveling roll 2 as well.

In addition, although the above embodiment describes the upper half of the roller leveler, the same procedure can be applied to the lower half, and the thickness of each roll diameter may be adopted as appropriate other than in the embodiment. 6- It goes without saying that the roll may be further moved through several stages by the required stroke.

As explained above, according to the present invention, (1) roll abrasion scratches and the like occurring on the intermediate roll can be dispersed in the roll axis direction;
Extends roll life.

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

(b) Since the stop time of the roller leveler is shortened, the operating rate is improved.

(f) Roll polishing time is reduced.

(V) High-quality boards without roll marks can be straightened.

It can produce excellent effects such as

[Brief explanation of the drawing]

Fig. 1 (A) and (B) are both schematic diagrams showing a 6[]i type roller leveler, and Fig. 2 is a II- of Fig. 1 (Δ).
An explanatory view of the roller leveler of the present invention corresponding to the IT arrow view, Figs. 3 and 4 are explanatory views showing the operating state of Fig. 2, and Fig. 5 is an explanatory view of another embodiment of the present invention. , FIG. 6 is an explanatory diagram of the operation of FIG. 5. 2... Leveling roll, 3... Intermediate roll, 4...
...Backup roll, 13...Shift cylinder. Patent application Hitoshi Kawajima Harima Heavy Industries Co., Ltd. 81

Claims (1)

[Claims] 1) In an eHi type roller leveler in which a leveling roll is supported by a backup roll via an intermediate roll, after at least one roll in contact with the intermediate roll is separated from the intermediate roll, the intermediate roll is A roll shift method for a roller leveler characterized by moving the roller in the axial direction. 2) In a 6 Hi type roller leveler in which the leveling roll is supported by a backup roll via a middle 110-roll, it is possible to move the middle roll in the axial direction with the middle roll in contact with another roll. Features Roll shift method of roller leveler. 3) A 6 Hi type roller leveler in which the leveling roll is supported by a backup roll via an intermediate roll, characterized in that a means for moving the intermediate roll in the axial direction is provided. Shift device.