JP3172435B2 - Flange lift-up device for welded H-section steel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flange lift-up device for a welded H-section steel, and more particularly to a welding H-section steel straightening apparatus for correcting a squareness defect and a bend of an umbrella during online transmission. The present invention relates to a flange lift-up device.

[0002]

2. Description of the Related Art Welded H-section steels are widely used for construction and structural purposes, and are manufactured by welding two upper and lower flanges made of flat steel and a web made of flat steel by high frequency resistance welding. The squareness defect (a, b) as shown in the cross-sectional view of FIG. 4 is caused by variations in verticality and horizontality of the web and flange during welding, variations in welding current, and variations in preheating temperature. And umbrella bending (c) often occur. FIG. 4 also shows the tolerance of the squareness T defined in JIS G 3353.

[0003] If there is such a shape defect, it becomes unsuitable for use in buildings and structures. In addition, if the degree of the shape defect is large, it will be difficult to pass materials such as shears in downstream processes. Need to correct within the difference. Therefore, there has been a demand for the development of a device capable of efficiently correcting the squareness failure and umbrella bending with a sufficient correction ability.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a flange lift-up apparatus for a welded H-section steel capable of efficiently correcting a squareness failure and umbrella bending of the welded H-section steel with a sufficient straightening ability. And

[0005]

According to a first aspect of the present invention, there is provided an expanding roller which is rotatably abutted from the inner surface to both ends of the width of the upper and lower flanges. A total of four sets of lift units, each of which integrates the lateral escape restraint rollers that freely contact with the corresponding upper, lower, left and right ends of the flange, and are provided for each set of lift units in accordance with an external lift command. A motor for lifting the lift unit of the set by a specified amount.

According to a second aspect of the present invention, the first aspect further comprises:
The gist of the present invention is to have a vertical escape restraint roller that rolls and abuts on the outer surfaces of the upper and lower flanges before and after the lift unit. In a third aspect of the present invention, in the first or second aspect,
The gist is that the lift command is feedback information from downstream. A fourth invention is directed to the first, second,
In any one of the third inventions, the gist of the present invention is that the spreading roller further has a shape and / or an arrangement form capable of contacting only the inner ridge of the flange width end face.

[0007] A fifth aspect of the present invention is characterized in that in any one of the first to fourth aspects of the present invention, a cylinder is used instead of the motor.

[0008]

FIG. 1 is a block diagram of the present invention.
In FIG. 1, 1 is a welded H-section steel, 2 is the direction of passing material, 3 is a web, 4 is a flange, 5 is an expanding roller, 6 is a lateral escape restraining roller, 7 is a vertical escape restraining roller, and 8 is a lift unit. , 9 are motors and S is a lift command.

According to the present invention, the expanding roller 5 is provided so as to rollably contact the both ends of the upper and lower flanges 4 from the inner surface.
Are arranged. It is necessary to provide at least one expanding roller 5 at each of the upper, lower, left and right sides of the flange 4. This allows
A vertical spreading force is applied to the upper and lower flanges 4 (in FIG. 1, the left side is the front side with respect to the web 3 and the right side is the other side).
Can be secured independently of the action point.

It is preferable that the expanding force is applied within the same cross section perpendicular to the direction 2 of the passing material. Therefore, when the expanding rollers 5 correspond to the ends of the upper, lower, left and right flanges 4 one by one, It is good to arrange in this same cross section. Before and after the spreading roller 5 (the upstream side in the direction 2 of the passing material is defined as the front side, and the downstream side is defined as the rear side), the lateral escape restraining rollers 6 are arranged so as to rollably contact with the upper, lower, left and right flange end faces. You. It is desirable to provide at least one lateral escape restraint roller 6 before and after the expanding roller 5. As a result, a lateral restraining force can be applied to the upper and lower flanges 4 in balance with the lateral component force generated by the expanding force (in general, unevenness in the vertical and horizontal directions) applied independently from the left and right. Can be prevented from escaping laterally.

Further, a set of the expanding roller 5 and the lateral escape restraining roller 6 which are in contact with the same end located on the upper, lower, left and right sides of the flange 4 is incorporated in a frame independent from each other in the upper, lower, left and right to form a lift unit 8. , Each lift unit 8
The motor 9 is connected one-to-one with the motor 9, the upper left and right lift units 8 are lifted up,
The lower left and right lift units 8 are lifted down.

The lift-up amount and the lift-down amount (collectively referred to as lift amount) are given by the value of the squareness T or the amount obtained by adding the return of elastic deformation to the plastic deformation capable of correcting the amount of umbrella bending. . The lift amount can be designated, for example, by giving the current position recognition function to each of the upper, lower, left, and right motors 9 individually, and giving a lift command S to indicate the movement amount (motor rotation speed) from the current position.

The motor 9 can be either an electric motor or a hydraulic motor, and a cylinder can be used instead of the motor. When a cylinder is used, the amount of movement from the current position can be specified by the amount of stroke. In the above configuration, each of the rollers (5, 6) is in rolling contact with the welded H-section steel 1 and does not hinder the passage of the welded H-section steel 1.

Spaces are respectively provided above the upper flange and below the lower flange to which the expanding roller 5 abuts from the inner surface to apply the expanding force, so that the expanding force corresponding to the amount of expansion required for correction is provided. Due to their free application, the device according to the invention has a sufficient corrective capacity. Therefore, according to the present invention, during the passing of the welded H-section steel, the expanding force on the upper, lower, left and right flange ends is individually applied with a large degree of freedom while restraining the escape of the material in the horizontal and vertical directions. Therefore, it is possible to efficiently correct the squareness failure and umbrella bending of the welded H-section steel with sufficient correcting ability.

According to the present invention, furthermore, the lift unit 8
Before and after, longitudinal escape restraint rollers 7 are arranged so as to rollably contact the outer surfaces of the upper and lower flanges 4. It is desirable to provide at least one longitudinal escape restraint roller 7 before and after the lift unit 8. Thereby, a fulcrum for restraining the escape of the welded H-section steel 1 in the vertical direction can be secured before and after the point of action of the expanding force formed by the expanding roller 5, and the correcting ability can be further enhanced.

It is preferable that the lift amount is fed back from a downstream side. For example, the lift amount is fed back downstream of a place where the device according to the present invention is disposed by using a laser distance meter or the like. A perpendicularity shape sensor (not shown) configured to detect inclination from horizontal is provided, and individually sent to the upper, lower, left and right motors 9 based on information on the perpendicularity of the upper and lower flanges obtained from the shape sensor. What is necessary is just to generate the lift command S to be performed.

FIG. 2 is a cross-sectional view showing a preferred contact form of the spreading roller. In FIG. 2, reference numeral 4C denotes an inner ridge of the end face of the flange width, and the same members as those in FIG. In the present invention, when the expanding roller 5 is brought into contact with both ends of the width of the flange 4 from the inner surface, a pressing flaw may be generated on the inner surface of the flange 4 by the roller end of the expanding roller 5. for,
The expanding roller 5 is tapered and its tapered side is arranged toward the web surface (see FIG. 2A), and / or the rotating shafts of the upper and lower expanding rollers 5 on the same web surface side are arranged to open outward. By doing so (see FIG. 2B), it is desirable to limit the point of application of the expanding force (the contact point of the expanding roller 5) to the inner ridge 4C on the flange width end surface.

[0018]

EXAMPLE An apparatus according to the present invention was provided downstream of a welding joint line of a welded H-section steel to correct a squareness defect and an umbrella bend. FIG. 3 is a side view of a main part of the embodiment of the present invention. 3, reference numeral 10 denotes an outer frame, 11 denotes an inner frame, 12 denotes a pass line, 13 denotes an upper flange outer surface, 14 denotes a worm, and 15 denotes a handle. The same members as those in FIG. I do.

In the present embodiment, the expanding roller 5 to be brought into contact with the end of the flange from the inner surface has a roll diameter of 40 mmφ, and one roller at each of the upper, lower, left and right sides, and an outer opening angle of 4 ° in the form shown in FIG.
70 mm before and after each spreading roller 5
At each point, a lateral escape restraint roller 6 with a roller diameter of 52 mm
A total of two lift units 8 were provided, and these were integrated with the expanding rollers to form a total of four sets of upper, lower, left and right lift units 8. The lift unit 8 is attached to the inner frame 11 for the upper part and to the outer frame 10 for the lower part so as to be vertically slidable. The inner frame 11 was incorporated in the outer frame 10 so as to be able to slide up and down.

An electric motor 9 is provided corresponding to each set of the lift units 8 to lift (up or down) them in the direction of expansion in accordance with an external lift command.
Further, a shape sensor composed of a laser distance meter is provided downstream of the flange lift-up device, and the lift command is generated from the shape sensing information obtained there and fed back to the motor 9.

Further, a total of four rollers are provided at each of the front and rear ends of the front and rear section of about 430 mm centering on the upper and lower expanding rollers 5, and the roller diameter is four.
A vertical escape restraint roller 7 having a diameter of 80 to 90 mm was attached to the inner frame 11 for the upper part and to the outer frame 10 for the lower part. Although not a requirement of the present invention because it is a conventional technique, a worm 14 and a handle 15 (not shown in the lower part of FIG. 4) for presetting the vertical and horizontal roller intervals in response to a change in product dimensions. And with.

Using the flange lift-up device arranged as described above, the squareness of the welded H-beam after welding was corrected and the umbrella was corrected. As a result, the squareness with a tolerance within 1 mm was continuously and high. The accuracy can be ensured, and the usefulness of the present invention has been proved.

[0023]

As described above, according to the present invention,
A remarkable effect is obtained that a flange lift-up device for a welded H-section steel that can efficiently correct the perpendicularity failure and umbrella bending of the welded H-section steel with sufficient correction ability.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of the present invention.

FIG. 2 is a cross-sectional view showing a preferred contact form of the spreading roller.

FIG. 3 is a side view of a main part of the embodiment of the present invention.

FIG. 4 is a cross-sectional view showing poor squareness (a, b) and umbrella bending (c) of a welded H-section steel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welded H-section steel 2 Direction of passing material 3 Web 4 Flange 4C Inner ridge of flange width end face 5 Expanding roller 6 Lateral escape restraint roller 7 Vertical escape restraint roller 8 Lift unit 9 Motor 10 Outer frame 11 Inner frame 12 Pass line 13 Upper flange outer surface 14 Warm 15 Handle S Lift command T Squareness

Claims (5)

(57) [Claims] 1. An expanding roller which rolls in contact with both ends of the width of the upper and lower flanges from the inner surface, and a lateral escape restraint roller which rolls in contact with the upper, lower, left and right flange end surfaces before and after the expanding roller. A total of four sets of lift units that are integrated with those corresponding to the upper, lower, left, and right ends, and each set of lift units is provided for each set and lifts the set of lift units by a specified amount in accordance with an external lift command. A welded H-section steel flange lift-up device comprising a motor. 2. The flange lift-up device for welded H-section steel according to claim 1, further comprising a vertical run-out restraining roller that rollably contacts the outer surfaces of the upper and lower flanges before and after the lift unit. 3. The flange lift-up device for a welded H-section steel according to claim 1, wherein the lift command is further feedback information from downstream. 4. The welded H-shape according to claim 1, wherein the spreading roller further has a shape capable of abutting only on the inner ridge of the flange width end face and / or has an arrangement form. Steel flange lift-up device. 5. A cylinder as a substitute for the motor.
The flange lift-up device for a welded H-section steel according to any one of claims 1 to 4.