JP2542134B2 - H-section steel straightness straightening device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for correcting the squareness of H-section steel.

[0002]

2. Description of the Related Art H-section steel is generally formed by hot rolling by a universal mill having upper and lower horizontal rolls and a vertical roll, then cut to a predetermined length, and cooled by a cooling bed. . And
After that, warping and bending are corrected by a roller straightening machine or the like.

However, the rolled H-shaped steel has a non-uniform flange thickness due to the axial movement of the rolls due to wear and rattling of the upper and lower horizontal rolls during rolling, elastic deformation, or the like. May be. or,
A temperature difference occurs due to a difference in temperature between the inner surface and the outer surface of the flange, a difference in cooling conditions in the cooling process, or a difference in thickness between the flange and the joint between the web and the flange. As a result, as shown in FIGS. In many cases, the flange of the H-section steel after cooling is deformed so that it is not perpendicular to the web.

When the flange is deformed in this way, it cannot be straightened by an ordinary roller straightening machine, and special means such as press straightening and heat straightening are required, but all of these works are done by the operator. Depends on skill and intuition. Therefore, it is a big problem in terms of productivity and quality.

Conventionally, there is a means for pushing the outer surface of the flange 8 inward with the pushing roll 4 (Japanese Patent Publication No. 55-30923) as a means for correcting the squareness of the H-section steel online. ~ Although it is effective in correcting the bending deformation of the flange 8 as shown in Fig. 9, it is not effective in correcting the inclined deformation of the flange 8 as shown in Figs. 5 and 6. Another method is disclosed in JP-A-63-1925.
There is a method as shown in No. 17 (FIG. 4). In this method, the upper and lower surfaces of the web 9 are constrained by the constraining rolls 5 when being pushed in by the pushing rolls 4. The restraint roll 5 is movable in the vertical direction so as to correspond to the thickness of the web 9, but cannot be moved in the horizontal direction.

[0006]

When the squareness of the flange 8 is corrected by such a conventional technique, the restraining roll 5 cannot be moved in the left-right direction, so that its position is on the flange 8 having any inclination angle. In order to be compatible, it is set at a position apart from a corner portion 10 which is a connecting portion between the flange 8 and the web 9. That is, when the pushing roll 4 pushes the flange 8, the restraining roll 5 restrains the web 9 at a position away from the corner 10. As a result, when the flange 8 is pushed in, a shape defect is likely to occur between the portion constrained by the constraining roll 5 and the corner 10.

The present invention has been devised in view of these problems, and provides a device which can correct the flange 8 without causing a defective shape of the web 9 and has a simple structure and can be miniaturized. Is the task.

[0008]

[Means for Solving the Problems]
Rotate while holding both ends of the web 9 of the H-section steel 1 from above and below
Restraint roll 5 mounted rotatably to roll, and H type
Rotate to rotate while pressing the outer surface of the flange 8 of steel 1.
The indenting roll 4 that is freely attached to both rolls 4,
The axis of rotation of 5 is imaginary perpendicular to the pass line of H-section steel 1.
Straightness of H-section steel located in a single plane
The apparatus main body frame 2, push roll 4, and configured to have a restraining roll 5, second chocks 15 which is a support chocks and the moving mechanism 6,.

The body frame 2 is the width of the H-section steel 1 in the width direction of the web.
It is movable in the left-right direction, which is the direction, and is provided in a pair facing left and right. The pushing roll 4 is the body frame 2
It is assembled so that it can be tilted and displaced . Restraint roll 5
Is a support chock that is attached and fixed to the body frame 2.
It is rotatably supported by a certain second chock 15 . Then, the moving mechanism 6 includes the restraint roll 5 of the second chock 15.
A web of H-section steel 1 is provided with the restraint roll 5 provided on the shaft supporting portion.
Lead screw type structure that displaces in the lateral direction, which is the width direction
Has become .

[0010]

The operation of the present invention will be described below.

First, the H-shaped steel 1 is provided between the pair of body frames 2.
To enter. At this time, the pair of main body frames 2 is moved in the left-right direction corresponding to the width of the H-shaped steel 1. Next, the restraint roll 5 is moved to a position as close as possible to the corner 10 of the H-shaped steel 1 by the moving mechanism 6 and the position (corner 10 of the web 9) is restrained.

This restraint location differs depending on the inclination angle of the H-shaped steel flange 8. In the case of normal straightening, the body frame 2 is moved according to the web height and flange thickness of the H-shaped steel as the material to be straightened, and the position of the pushing roll 4 is determined.
Then, after setting the position of the web restraint roll, the H-section steel is passed. When the degree of deviation of the squareness is particularly large, after the web 9 is restrained, the pushing roll 4 is moved to press the outer surface of the flange 8 to correct the inclination of the flange 8.

By correcting the flange 8, it becomes possible to move the restraining roll 5 to the corner portion 10,
Therefore, the restraining roll 5 is positioned at the corner portion 10 by driving the moving mechanism 6 again.

With the pressing roll 4 straightening the flange 8 and the restraining roll 5 positioned at the corner 10, the H-section steel 1 is conveyed, whereby the squareness of the H-section steel 1 flange 8 is continuously changed. It is something to be corrected. H transported continuously
Since the corners 10 of the shaped steel 1 are constrained, there is no deformation between the constrained portions of the web 9 and the corners 10, which has been a problem in the past.

A second lever for rotatably supporting the restraining roll 5.
The knock 15 is directly attached and fixed to the body frame 2.
Therefore, the functional part that holds the restraint roll 5 rotatably
Can be constructed with sufficiently high mechanical rigidity, which
The strong and stable restraint of the H-section steel 1 to the web 9 by
You can exert your power.

A moving mechanism 6 for moving the restraining roll 5
Of the second chock 15 attached to the body frame 2.
Provided with a feed screw type configuration on the 5-axis support part of the restraint roll
So, the functional part that moves the body frame 2 left and right
There is no risk of interference with the
And, more importantly, restraint law
The moving force for the rule 5 is directly applied to the rotation axis of the restraint roll 5.
Therefore, the restraint roll 5 is strongly and stably left and right.
Can be moved to the
Positioning at the corner 10 of the H-section steel 1 in a truly and stable manner
Can be.

[0017]

1 to 3 show an embodiment of the present invention.

The main body frames 2 are provided so as to face each other on the left and right, and each main body frame 2 is provided with two side plates facing each other.
It consists of 11. The horizontal movement of the main body frame 2 is achieved by a cylinder (not shown).

The pushing roll 4 tilts with respect to the main body frame 2.
First attached to tilting frame 7 assembled as possible
The tilting frame 7 is pivotally supported by the chock 14
Is tilted and displaced by expanding and contracting a rod of a cylinder of a tilting mechanism 3 which is constituted by a cylinder or the like assembled to a fixed block 12 fixed to the main body frame 2 . This
The tilting mechanism 3 of the
By tilting the roll 4, the push roll 4 is desired.
Set the corrective angle posture.

The tilting frame 7 is U-shaped, and its rear end is connected to the tilting mechanism 3 and the first chock 14 is attached to the tip end thereof in a vertically opposed position. The push roll 4 is rotatably assembled to the pair of first chocks 14.

The moving mechanism 6 is a shaft support of a second chock 15 fixed to a fixed base 13 fixedly assembled to the main body frame 2.
It is provided on the functional part and fixed to the second chock 15
A guide 21, a shaft 22 slidably mounted on the guide 21, a first bearing 23 mounted on the tip of the shaft 22 so that the constraining roll 5 can rotate, and a second bearing 24 on the second chock 15. via rotatably with screwed assembly to the shaft 22 the rear end in the threaded portion 20 together with the grapple shore sprockets 18
It is composed of a rotary screw 19 having.

The rotational force of the motor 16 is transmitted to the rotary screw 19 via the chain 17, and the rotary screw 19 is rotated to rotate the shaft 22 and the restraining roll 5 rotatably attached to the shaft 22.
To move left and right. The movement of the shaft 22 is smoothly achieved by the action of the guide 21.

By reversing the rotation direction of the motor 16, the moving direction of the shaft 22 (restraint roll 5) is changed. By the function of the moving mechanism 6, the gap g between the restraining roll 5 and the pushing roll 4 can be freely set, that is, the restraining roll 5 can be freely positioned at the corner 10 of the H-section steel web 9. .

[0024]

As described above, according to the present invention, since the restraint rolls can be moved in the left and right directions, the corner portions of the web can be restrained, and therefore, deformation around the corner portions of the web during flange straightening can be suppressed. You can In addition, since the corners can be restrained by the restraining rolls, the straightening effect is enhanced, so that the amount of pressing the flange required for the straightening can be reduced, and thus damage to the outer surface of the flange caused by the pressing of the flange can be suppressed.

A second cho that rotatably supports the restraining roll.
Since the lock is directly fixed to the body frame,
The mechanical rigidity of the shaft support function
Made possible, which made it strong and stable against H-section steel
It can exert the web restraint force, and
The moving mechanism is used for the function of supporting the restraint roll of the second chock.
Since it is provided with a feed screw method, other left and right movement function parts
Extremely compact without any risk of interference
The restraint roll can be made into an H-shaped steel
You can position it strongly and stably at the corners of
This enables strong and stable flange right angle correction.
be able to.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a view on arrow AA in FIG.

3 is a view taken along the line BB in FIG.

FIG. 4 is a front view showing a conventional technique.

5 to 9 are partial front views showing the inclination of the H-shaped steel flange.

[Explanation of symbols]

1; H-shaped steel 2; Body frame
3; Tilt mechanism 4; Pushing roll 5; Restraint roll
6; moving mechanism 7; tilting frame 8; flange
9; Web 10; Corner 11; Side plate
12; Fixed block 13; Fixed base 14; First chock
15; Second chock 16; Motor 17; Chain
18; Sprocket 19; Rotating screw 20; Thread
21; Guide 22; Shaft 23; First bearing
24; Second bearing

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minor Fukuda 1 Fukuda Mizusaki Kawasaki-dori, Kurashiki City, Okayama Prefecture (No house number) Inside the Mizushima Works, Kawasaki Steel Co., Ltd. (56) Reference JP-A-64-48621 A) Japanese Unexamined Patent Publication No. 1-99722 (JP, A) Actually unfolded 2-22211 (JP, U)

Claims (1)

(57) [Claims] 1. The upper and lower ends of the web (9) of the H- section steel (1) are placed vertically.
Constraints that are rotatably assembled to rotate while restraining
The outer surface of the roll (5) and the flange (8) of the H-section steel (1)
Pushing that is rotatably assembled to rotate while pressing
Roll (4) and the rotation axis of both rolls (4) and (5)
Virtual flat single plane perpendicular to the pass line of the H-section steel (1)
For H-section steel straightness straightening device positioned in the plane
And the body frame with the pushing roll (4) attached.
(2) A support that rotatably supports the restraint roll (5).
A second chock (15), which is a chock, is provided and the second chock is
Of the restraint roll on the restraint roll (5) of the lock (15).
Movement of the feed screw method that displaces the tool (5) in the web width direction.
An H-section steel straightness straightening device provided with a mechanism (6) .