JPS6064714A - Variable caliber type edger roll - Google Patents

Abstract

PURPOSE:To control an excessive reaction for a flanged roll due to a rolling material and to protect a caliber-adjusting mechanism by slanting a roll axis in the vertical plane which is parallel to the advancing direction of the rolling material. CONSTITUTION:When a rolling reaction detected by a load meter 21 exceeds a previously set load-difference, supporting rails 16 are projected into a housing 15 by actuating cylinders 17 to slant a roll axis 1. When the roll axis 1 is slanted, a force for pressing a rolling material S downward is produced by the composition of motion vectors in the advancing direction of rolling material S and the rotational direction of roll axis 1. The force acts in the direction of pressing the material S against a flange part 1', then the action of an excessive rolling reaction on a flanged roll 6 is avoided. Accordingly, the excessive action of rolling reaction on a worm-screw mechanism 11 i.e. a caliber-dimension adjusting mechanism of flanged roll 6, is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an edger roll, and more particularly to an improvement in a variable caliber edger roll.

During blooming rolling, thick plate rolling, or rough rolling for hot steel strip rolling, medium reduction is performed using a vertical scale breaker (VSB), i, or edger roll in order to adjust the width of the entire rolled material to the desired width. However, during this width reduction, rolling is performed on caliber rolls for the purpose of large reduction. By the way, when the thickness of the rolled material changes, the caliber mentioned above also needs to be changed accordingly.
For example, a roll has been proposed as Utility Model Publication No. 52-1881. However, as for this edger roll, if the sliding part of one of the movable flange parts that constitutes the caliber wears out during long-term use and a gap is formed in this part,
Product defects may occur due to the rolled material being bitten during rolling, or impressions caused by part of the sliding corner of the movable flange on the side edges of the rolled material.
Excessive rolling load during rolling on the rolls, as well as excessive rolling reaction force due to the one-sided floating phenomenon of the rolled material that occurs when the shape of the edge of the rolled material is uneven above and below, act on the caliber adjustment mechanism. However, in order to protect the caliber adjustment mechanism from this rolling load, the mechanism of this part has to be stiff.

The present invention has been made in view of the above-mentioned points, and is characterized in that in an edger roll formed with a pair of flanges, one of the flanges is formed on a roll shaft rotatably supported. The other flange is fitted into this flange so as to be movable and rotatable in the direction of the roll axis, and the roll axis is tilted in a vertical plane parallel to the direction in which the entire rolled material travels. This lies in the fact that

The edger roll according to the present invention will be explained below based on the illustrated embodiments, but this is not intended to limit the present invention and may be freely modified without departing from the technical idea of the present invention. It is something.

For ease of explanation, the figure shows one of a pair of left and right rolls across the pass line, and the roll shaft 1 formed by the flange 1' can be rotated by the upper shaft box 2 at its lower end. The upper end thereof is attached via a slidable bearing 4 to an axle box 5 fitted into the movable frame 3 so as to be slidable in the axial direction. A flange roll 6 is fitted onto the roll shaft 1 through a key 7 so as to be freely raised and lowered along the axis of the roll shaft 1 so as to face the flange 1'. It is rotatably supported via a bearing 8. The axle box 5 is slidably inserted into the movable frame 3, and is connected to a worm screw mechanism 11 driven by an electric motor IO mounted on a base 9 provided on the movable frame 3. Screw shaft 1 to be rotated
Although not shown in Fig. 2, the screw shaft 1 is always brought into contact with the push plate 5' by a roll balancer.
In other words, the axle box 5
A collar roll 6, which is pivotably supported, is raised and lowered along the axis of a roll shaft l. The axle box 2 that pivotally supports the roll shaft 1 has an inner cavity 1 of a receiving metal fitting 14 whose outer surface is formed into an arc shape and which is fitted into a lower moving frame 13 that moves inside the housing 15.
4' to enable tilting of the roll shaft l in a vertical plane parallel to the direction in which the rolled material travels. The upper moving frame 3 is supported by a support rail 16 embedded in the inner surface of the housing 15, and this support rail 16 is supported by a cylinder 1 provided in the housing 15 at the back thereof.
7, the movable frame 3, in other words, the roll axis 1' is tilted.

The moving frame 3 and the lower moving frame 13 are connected to a conventionally known lowering mechanism provided in the housings 1 and 5, and have a worm 17 moved by an electric motor (not shown). The worm wheel 18 that engages with the worm wheel 18 and the threaded shaft 19 that is screwed into the worm wheel 18 are connected via a rolling mill 20i to roll down the rolled material S in the width direction.

In addition, 21 in the figure is a universal load meter 22 which detects the entire rolling reaction force acting on the collar roll 6 inserted between the screw shaft 12 and the push plate 5' of the axle box 5, and a universal load meter 22 which transmits the entire rotation to the roll. spindle teal.

In the edger roll having the above-described configuration, the rotational force of rolling is transmitted to the roll shaft l via the universal spindle 22', the rotation is transmitted to the collar roll 6 via the keys 7 to 11'', and the rotational force is transmitted to the collar roll 6 via the key 7 to 11'', The supported collar roll 6 rotates integrally with the roll shaft 1.

When the caliber dimensions are completely changed depending on the thickness H of the rolled material S, when the electric motor on the base 9 is fully activated, the screw shaft 12 rotates in the worm screw mechanism 11 and is transmitted to the push plate 5' of the axle box 5. The axle box 5 is designed to move up and down the entire inner surface of the movable frame 3, and has a caliber dimension corresponding to the thickness H of the rolled material S, and a lowering mechanism provided in the housing 15 moves the movable frame 3 and the lower part. Frame 13
The rolled material is moved in the entire width direction and rolled down in the width direction.

Now, the rolling reaction force detected by the load cell 21 interposed between the screw shaft 12 and the press 15' is compared with the detection value of the load cells 21 provided on both sides in the traveling direction of the rolled material S. , and/or when a preset load difference is exceeded, the cylinder 17 provided in the housing 15 is selectively actuated, the support rail 16 is projected into the housing 15, and the moving frame 3 is pressed, and the roll Axis 1? ! -Tilting. For example, if the rolled material S is now moving in the direction of the arrow in FIG. The supporting axle box 5 and the moving frame 3 are pressed, and the receiving metal fitting 14 of the lower moving frame 13 receives the axle box 2 that supports the roll shaft 1.
The roll shaft 1 rotates along the arcuate surface of its outer periphery, and the axis of the roll shaft 1 is tilted in a vertical plane parallel to the traveling direction of the rolled material S. When the roll shaft l tilts, a force that presses the rolled material downward is generated due to the combination of the motion vectors of the traveling direction of the rolled material S and the rotational direction of the roll shaft L, and the rolled material s'20-le axis 1 Flange part 1' formed in
The tsuba roll 6 acts in the direction of pressing against the
It is possible to prevent an excessive rolling reaction force from acting on the worm screw mechanism 11 which is a caliber size adjustment mechanism of the collar roll 6.

As is clear from the above, in the edger roll according to the present invention, the roll axis can be set in the direction of movement of the rolled material in a vertical plane parallel to the direction of movement of the rolled material, or in the direction opposite to the direction of movement of the rolled material. By tilting the mechanism, the excessive rolling reaction force against the collar roll caused by the rolled material can be completely suppressed.The Sica River adjustment mechanism can be fully protected, and its structure can also be made relatively simple. However, the effect it produces is great.

[Brief explanation of drawings]

FIG. 1 is a partially sectional front view of an edger roll according to the present invention, and FIG. 2 is a partially sectional side view thereof. In the figure, 1 is a roll axis, λ5 is an axle box, 3 is a moving frame, 6 is a collar roll, 13 is a lower moving frame, 15 is a housing, and 16 is a support rail. Patent applicant Yoshiyuki Kaji, agent of Kobe Steel, Ltd.

Claims (1)

[Claims] In the edger roll formed by a pair of flanges,
One flange is formed on a roll shaft that is rotatably supported,
The other flange is fitted into this flange so as to be movable and rotatable in the direction of the roll axis, and the roll axis is tilted in a vertical plane parallel to the traveling direction of the rolled material. Variable caliber type Exger roll.