JP2851479B2 - Rolling mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling mill provided with a roll cloth device and a sleeve roll type backup roll.

[0002]

2. Description of the Related Art FIG. 3 shows the concept of an example of a conventional cross-roll type rolling mill.
Further, the backup roll 21 is rotated up and down around a central portion in the roll axis direction to cross each other, and the cross angle is adjusted to control the sheet crown of the rolled material S.

FIG. 4 shows a backup roll of an example of a conventional sleeve roll type rolling mill in which a backup roll is broken.
The backup roll 10 is provided with a center eccentric portion 2, an intermediate eccentric portion 3, and a both-end eccentric portion 4, and is provided with a roll support shaft 1 that rotates and is divided into five in the axial direction.
4, the outer rings rotatably fitted via the rolling bearings 5, that is, the split rolls 7, 8, 9 and the respective split rolls 7, 8, 9 are stored, and according to the rotation of the work roll 11, And a sleeve 6 that rotates together with the division rolls 7, 8, 9.

FIG. 5 shows eccentric portions 2, 3, 4 with respect to the axis C1 of the roll support shaft 1 in each split roll shown in FIG.
6 shows the eccentric state of the centers C2, C3, and C4 and the rotation locus of each of the divided rolls 7, 8, and 9, and the crown pattern of the work roll 11 at each rotation angle is as shown in FIG.

The roll support shaft 1 is rotated at an appropriate angle to lower the work roll 11, thereby controlling the shape of the rolled material S.

[0006]

Among the above-mentioned prior arts, the conventional cross-roll type rolling mill shown in FIG. 3 employs a conventional cross roll type rolling mill. By adjusting the gap, it is possible to control the sheet crown such as simple middle elongation or end elongation of the rolled material, but there is a problem that the composite elongation in which middle elongation, intermediate elongation, end elongation and the like are mixed cannot be controlled.

Further, in the sleeve roll type rolling mill described with reference to FIGS. 4 to 6, it is possible to control the composite elongation by forming V, W, ∧, and M-shaped crowns on the work roll. If the amount of eccentricity of each split roll is excessively large in order to enlarge the crown pattern, the load borne by each rolling bearing increases, and the life of the rolling bearing and the sleeve decreases.

According to the present invention, the above disadvantages can be solved.
It is another object of the present invention to provide a rolling machine having high rolling efficiency and capable of improving rolling quality .

[0009]

As a configuration for solving the problems SUMMARY OF THE INVENTION The rolling mill of the present invention, on the, when the cross each other in a plane parallel the axis of the lower work roll in the rolling plate surface
Both the adjustable This cross angle, a rolling mill comprising a roll cross device for rolling the metal sheet between the work rolls and directly circumferential contact with at least one of said work roll, the roll in the axial direction The rolls are divided into at least three pieces, and the plurality of rolls are eccentrically mounted on one roll support shaft capable of adjusting the rotation angle, and are rotatably mounted. The sleeve roll type backup roll stored in the sleeve
Arranging the backup roll with respect to the rolled plate surface.
The cross angle of the tool is adjustable .

[0010]

According to the rolling mill of the present invention, when rolling a metal plate, the roll supporting shaft of a sleeve roll type backup roll directly in contact with a work roll is rotated by an appropriate angle to be lowered. the crown pattern is formed on the work roll by, further on, by cross each other lower work rolls, by adjusting the cross angle, with the addition of V-shaped crown to the crown pattern, the sleeve roll bar
Adjust the cross angle of the backup roll to the rolled plate surface
Thus , an optimum crown pattern is formed on the work roll, and the plate crown and complicated plate shape defects such as complex elongation are simultaneously controlled.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be specifically described below with reference to the drawings. The same members and parts as those of the prior art device are denoted by the same reference numerals, and redundant description will be omitted.

[0012] FIG. 1, roll cross device and a sleeve Russia
Cutaway side view showing a main part of the rolling mill of the present invention provided with the Lumpur type backup roll, FIG. 2 is a cutaway front view of FIG.

In these figures, reference numeral 12 denotes upper and lower work roll chocks, which support the upper and lower work rolls 11, respectively.

The axes of the upper and lower work rolls 11 are arranged to cross each other in a plane parallel to the plate surface of the rolled plate material.

Reference numeral 13 denotes an upper and lower backup roll chock, which supports the roll support shafts 1 of the upper and lower backup rolls 10 which are in direct contact with the work roll 11, respectively.

In this embodiment, the backup roll 10
Similarly, the work rolls 11 are arranged so that their axes cross each other.

The work roll chock 12 and the backup roll chock 13 are provided on both inner sides of the housing 20.
Each of the crossheads 14 slidably buried in the line direction is fitted slidably in the up-down direction.

Reference numeral 15 denotes a hydraulic cylinder, which is fixedly provided on both outer sides of the housing 20 and has a rod 16
Each penetrating through the housing 20
It is connected to.

Reference numeral 17 denotes a worm wheel fitted to each of the upper and lower roll support shafts 1, and reference numeral 18 denotes a worm which is rotated by a driving device (not shown).

The backup roll 10 is provided with a central eccentric portion 2, an intermediate eccentric portion 3 and an eccentric portion 4 at both ends, and the roll support shaft 1 is rotated in the same manner as the conventional device shown in FIG. An outer ring or split rolls 7, 8, 9 rotatably fitted to the respective eccentric portions 2, 3, 4 via rolling bearings 5, respectively;
9 is accommodated, and the sleeve 6 rotates together with the divided rolls 7, 8, 9 according to the rotation of the work roll 11. 7 is a center split roll, 8 is an intermediate split roll,
Reference numeral 9 denotes a roll divided at both ends. Sleeve 6 is a work roll
Directly in contact with 11.

Next, the operation of the present apparatus will be described. When rolling the rolled material S, the upper and lower work rolls 11 having their axes crossed with each other are driven and rotated, and the roll support shaft 1 of the upper and lower backup rolls 10 is rotated at an appropriate angle by the worm 18 and the worm wheel 17. Thus, a crown pattern is formed on each of the upper and lower work rolls 11.

If the V-shaped crown of the crown pattern is insufficient, the upper and lower work rolls 11 and the backup roll 10 are further crossed vertically by a hydraulic cylinder 15 around the center in the axial direction. Is adjusted to control plate shape defects such as a plate crown and a composite elongation of the rolled material S. Moreover, such control smells
The backup roll 10 directly to the work roll 11
Crawled by a plurality of split rolls 7 to 9
The propagation of the pattern to the work roll 11 is no longer attenuated.
High efficiency to control plate shape defects
Up roll 10 stores a plurality of divided rolls 7 to 9
Has a sleeve 6 directly in contact with the work roll 11
Therefore, the striped shape caused by the boundary between the divided rolls 7 to 9
Is transferred to the rolled sheet surface via the work roll 11.
Are prevented from appearing, and therefore,
No high quality rolling can be performed.

As another embodiment of the present invention, a sleeve roll type backup roll may be arranged on only one of the upper and lower sides.

[0024]

Although several embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, but may be variously modified within the technical idea of the present invention. is there.

[0026]

Rolling mill of the present invention as described above, according to the present invention, the word
Roll cloth device for giving V-shaped crown to crawl
And the sleeve is directly in contact with the work roll and V, W,
ス リ ー ブ By installing a sleeve roll type backup roll that gives each M-shaped crown pattern,
V, W, ∧, M-shaped crown patterns added to the rune
To obtain a variety of crown patterns,
It is possible to simultaneously control a plate crown and a complicated plate shape defect such as a composite elongation. And back to the work roll
Since the sleeve of the up roll was directly in contact with the sleeve,
V given according to the eccentricity of a plurality of rolls in the
W, ∧, M-shaped crown pattern for work roll
High propagation efficiency improves rolling efficiency,
The boundary between multiple rolls of the backup roll
This prevents the striped marks that cause the
The quality of the product to be rolled can be improved.

Further, the plate shape can be sufficiently controlled without increasing the amount of eccentricity of each split roll, and the life of the rolling bearing supporting each split roll can be extended.

[Brief description of the drawings]

FIG. 1 is a cutaway side view showing a main part of a rolling mill according to one embodiment of the present invention.

FIG. 2 is a cutaway front view of the rolling mill of FIG.

FIG. 3 is a side view showing the concept of an example of a conventional cross-roll type rolling mill.

FIG. 4 is a cutaway front view showing a main part of an example of a conventional sleeve roll type rolling mill.

FIG. 5 is an explanatory diagram showing an eccentric state of each split roll of FIG.

FIG. 6 is an explanatory view showing a crown pattern in the conventional sleeve type rolling mill shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roll support shaft 2 Central eccentric part 3 Intermediate eccentric part 4 Both ends eccentric part 5 Rolling bearing 6 Sleeve 7 Central division roll 8 Intermediate division roll 9 Both ends division roll 10 Backup roll 11 Work roll 12 Work roll chock 13 Backup roll chock 14 Cross head 15 Hydraulic pressure Cylinder 16 Rod part 17 Worm wheel 18 Worm 20 Housing S Rolled material

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuo Kajihara 4-2-2 Kanon Shinmachi, Nishi-ku, Hiroshima City Inside the Hiroshima Research Laboratory, Sanishi Heavy Industries, Ltd. (72) Inventor Kazuo Morimoto 4-622 Kannon Shinmachi, Nishi-ku, Hiroshima City No. 3 Hiroshima R & D Co., Ltd. (72) Inventor: Kaoru Kaneko, Kashima-cho, Kashima-gun, Ibaraki 3rd, Kashima Works, Sumitomo Metal Industries, Ltd. (72) Inventor, Shunji Kamada, Kajima-cho, Kashima-cho, Ibaraki No. 3 Sumitomo Metal Industries, Ltd., Kashima Works (72) Inventor Tadashi Koga, Kashima-cho, Ibaraki Pref., 3rd, Kashima-cho, Kashima-cho (72) Inventor Yuji Kaga, Kashima-cho, Kashima-gun, Ibaraki, 3 Address Sumitomo Metal Industries Co., Ltd. Kashima Works (56) References JP 50-125553 (JP, A) (58) Field (Int.Cl. ^6, DB name) B21B 1 / 22,13 / 14,31 / 16,37 / 00

Claims (1)

(57) [Claims] 1. A top, the cross angle causes cross each other the axis of the lower work roll in a plane parallel to the rolled sheet surface
As adjustable, a rolling mill comprising a roll cross device for rolling the metal sheet between the work rolls, and,
Directly circumferential contact with at least one of the work rolls is divided into at least three rolls in the axial direction, it is decentered respectively plurality several roles for the roll support shaft of the rotation angle adjustable one A sleeve roll- type backup roll, which is rotatably mounted with the plurality of rolls and all the rolls are housed in a single sleeve, is provided.
Adjust the cross angle of the backup roll with respect to the
A rolling mill characterized by the possibility of knots .