JPS60141316A - Roll bending device - Google Patents

Abstract

PURPOSE:To perform rapidly the shape control of a rolling material by disposing a roll supporting chock housing slidably in the roll-axis direction and fitting a bending chock housing to the end part of roll axis and providing a bending cylinder to the space between the chock housings mentioned above. CONSTITUTION:Arms 2a are fixed in one body to each roll chock housing 2 used for supporting a work roll 1 to form its plane shape into an approximately channel shape, and each roll chock housing 2 is fitted slidably in the roll-axis direction to bending beams 4, 4 disposed between housings 3 through the outside grooves 2b of the arms 2a. A bending chock 6 provided with vertical bending cylinders 5 is fitted to each axial-end part of roll 1, to bring the pistons of cylinders 5 into contact with the upper and lower surfaces of the inside groove 2c of each arm 2a. By these mechanisms, the change of the stroke of bending cylinder 5 is not required even when the roll diameter is changed, and the housing is not influenced by the roll bending.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a rolling mill in which the rolls can be shifted in the axial direction. This invention relates to a roll bending device.

[Prior art] An example of a conventional rolling mill is explained with reference to Fig. 1.
is a housing, b is a block fixed to the housing window, C is a pair of upper and lower work rolls, d is a work roll C
The work roll axle box supporting the blocks b and b is fitted so as to be movable up and down between the blocks b, and e is a bending cylinder that also serves as a balance.

In such a rolling mill, as the diameter of the work roll C changes, the center position of the work roll C moves up and down, so the stroke of the bending cylinder e changes. For this reason, in such a rolling mill, the piston of the bending cylinder must be made long enough to allow bending even if the work roll diameter changes due to wear and the stroke changes, and the roll shaft box must be made long. When the piston moves in the direction of the roll axis lj, a bending action is applied to the piston. Therefore, there is a risk that the piston will become distorted and will not be able to apply a -1 minute pending force to the roll.In order to prevent the piston from becoming distorted, the piston may be damaged due to wear of the roll, and the axle box may come into contact with the block. There were problems such as contact with each other, making it impossible to control the shape of the rolled plate. Furthermore, since the roll pending force is transmitted to the housing a via the block b, there is a problem in that the housing a is elongated during rolling, which adversely affects the accuracy of the rolled plate thickness.

[Objective of the Invention 1] In view of the above circumstances, the present invention provides a roll in which the stroke of the bending cylinder does not change even if the roll diameter changes, and the influence of roll bending does not affect the housing. It was created for the purpose of providing bending equipment.

[Structure of the Invention] In the present invention, a first axle box is fitted into the bending beam disposed between the left and right housings so as to support the roll and move 4q in the roll axis direction. Fitting a second axle box onto the axle box of the roll or a bending member and roll that are fitted on a bending beam so as to be movable in the roll axis direction separately from the first axle box,
A bending cylinder for imparting roll bending to the roll is provided between the second axle box and the first axle box, or between the second axle box and the bending member.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 2 and 3 show an embodiment of the present invention, in which a work roll 1
An arm 2a extending to the outside of the rolling mill is integrally fixed to an axle box 2 which rotatably supports the rolling mill, so that the planar shape is approximately U-shaped, and it can be raised and lowered facing the window part of the housing 3. The axle box 2 is placed between the bending beams 4 and 4 provided in the
A bending shaft box is provided with a bending cylinder 5 which is fitted into the sliding O1i in the roll axis direction through the [outer side] 1112b provided on the work roll 2a, and is perpendicular to the shaft end of the work roll 1. 6 is fitted into the inner groove 20 in which the piston of the bending cylinder 5 is provided in the arm 2a.
abut against the upper and lower surfaces of the In the figure, 1 is a balance cylinder, and although not shown, at one end of the work roll 1,
An I''-le shift device is connected.

When rolling is performed, pressure oil is supplied to the bending cylinder 5 to impart a desired bending curve to the work roll 1, and the work is performed. Even if the diameter of the working wheel 1 changes due to roll wear etc., the bending beam 4 moves up and down with respect to the window part of the housing 3, and the relative positional relationship between the axle box 2.6 and the bending cylinder 5 does not change, so the bending There is no need to change the stroke of cylinder 5. Also, even if the work roll 1 is shifted in the axial direction, the axle box 2 slides against the bending beam 4, and the axle boxes 2, 6
Since they are integral, the bending cylinder 5 will not be twisted.

Furthermore, since the roll pending force is supported by the steering beam 4, it is not transmitted to the housing 3, and therefore no elongation occurs in the housing 3.

4 to 6 show another embodiment of the present invention, which differs from the previous embodiment in that the arm 2a of the axle box 2 is eliminated and a bending member 8 is provided.

In other words, the bending member 8 is connected to the bending beam 4.
The cylinder 5 is attached so that it can be opened freely in the direction of the roll axis and attached to the axle box 6. A roll shift device 10 is connected to the lever 9. In the figure, reference numeral 11 denotes a connecting member between the left and right bending beams 4.

Even with such a configuration, the relative positional relationship between the axle box 2.6 and the bending cylinder 5 does not change as in the previous embodiment, so there is no need to change the stroke of the bending cylinder 5, and the work roll 1 is aligned with the axis. Even if the bending cylinder 5 is shifted in this direction, the bending cylinder 5 will not be distorted, and the housing 3 will not be stretched.

In addition, in the embodiment of the present invention, the case where the bending cylinder is installed in the axle box has been explained, but it is also possible to install the bending cylinder in the arm or the bending member.
It goes without saying that the present invention may be implemented in any other manner, and that other modifications may be made without departing from the gist of the present invention.

[Effects of the Invention] As explained above, according to the a-ru bending and f-ing device of the present invention, the stroke of the bending cylinder does not change even if the roll diameter changes, so the piston can be made to the optimum length. Also, even if the rolls are shifted, the relative position between the bending axle box and the roll supporting axle box does not change, so the piston does not become distorted, and furthermore, the specified pending force of the O-ru is maintained at (=J, 9). Since the rolled material can be rolled along the guide of the housing and the shape of the rolled material can be quickly controlled, excellent effects such as improved product quality can be achieved.

[Brief explanation of the drawing]

FIG. 7 is a μ2 clear view of the conventional device, FIG. 2 is a schematic perspective view of an embodiment of the device of the present invention, FIG. 3 is a view taken in the direction of arrow ① in FIG. 2, and FIG. 4 is the device of the present invention. 5 is a schematic plan view of another embodiment, FIG. 5 is a view taken in the direction of arrow V in FIG. 4, and FIG. 6 is a schematic perspective view of the vicinity of the axle box and bending member in FIG. 4. In the figure, 1 is a work roll, 2 is an axle box, 2a is an arm, 3 is a housing, 4 is a bending beam, 5 is a bending cylinder, 6 is an axle box, 7 is a balance cylinder, and 8 is a bending member. Patent application: Ishikawajima-Harima Heavy Industries Co., Ltd. Procedural amendment (spontaneous) 1. Indication of the case 1980 Patent application No. 249214 2. Name of the invention Roll bending device 3. Person making the amendment Patent applicant Chiyoda, Tokyo 2-2-1 Otemachi, Ward (009) 4th Director, Ishikawajima Harima Heavy Industries Co., Ltd. Yahagi Daini Building, 3-5-3 Uchikanda, Chiyoda-ku, Tokyo, page 6, line 20 - page 7, line 1 1. No kink occurs or... ” will not cause any strain. Correct this. that's all

Claims (1)

[Claims] 1) A bending beam that is arranged to be movable up and down between the left and right housings, a first axle box that is fitted into the bending beam so as to support a roll and move in the roll axis direction; Is it fitted into the axle box and roll?
Alternatively, a bending member fitted to the bending beam so as to be movable in the roll axis direction separately from the first axle box, a second axle box fitted to the roll, the second axle box and the A roll bending device comprising: a first axle box or a second axle box and a bending cylinder provided between the bending member and imparting roll bending to the roll.