JPS5937338Y2 - Welded section steel flange correction device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flange inclination correction device for press-fitting a web material and a flange material at right angles in a welding machine for a section steel such as an H section steel or a T section steel.

In the process of welding H-section steel, T-section steel, etc. with a welding machine, the web material is erected in the width direction, and the 7-lunge materials are horizontally assembled on both upper and lower ends or one end of this web material, and then fed into a pressure welding roll. I try to do welding such as high frequency electric welding.

However, during this pressure welding process, there may be problems such as when the vertical centers of the pressure welding rolls do not match, when the approach angle of the flange material is not constant, or because of the influence of the lateral pushing force of the welding contact tip, etc. Perpendicularity between the lumber and the flange material may not be maintained.

For this reason, conventionally, as shown in Fig. 1, pressure welding low JvR
The flange material F is horizontally straightened by moving it to a position left and right away from the center of the web material W, or it is straightened using a straightening machine after welding.

However, in such conventional means, a lot of time is required to adjust the roll position, and a quantitative correlation between the adjustment allowance and the squareness is difficult to grasp.

Furthermore, there is also a risk that dimensional or shape defects may occur as a result of adjustment.

Further, the use of a straightening machine has the disadvantage that equipment costs and maintenance costs increase.

It is an object of the present invention to provide a roller adjusting means that can eliminate the various drawbacks of the conventional means, and also to obtain a flange inclination correction device suitable for carrying out the single-stage adjustment.

The technical gist of the present invention is that the angle of the flange material can be adjusted without changing the roll center of the pressure roll.
The adjustment effect is produced by changing only the pressure welding angle, and the feature is that the support mechanism for the pressure roll has a tiltable structure as schematically shown in Figure 2. .

As shown in FIG. 6, the configuration of the present invention is as follows: left and right rollers rotatably support a shaft 11 of a pressure roll 1 (hereinafter referred to as a roll).
The main parts are a pair of screw struts 2 and a fixing base 3 on which the screw struts 2 are erected.

A spherical bearing 21 is mounted inside the body at the supported end of the roll shaft 11 and controls a part of the shaft.The spherical bearing 21 is held at the upper part of the screw support 2, and when the roll shaft 11 is supported, the roll 1 and is rotatably supported.

The screw support 2 is installed on the fixed base 3, and a threaded portion 22 is screwed into the lower part of the screw support, which is screwed into the inner thread of a screw sleeve 31 buried in the fixed base 3. As the threaded sleeve 31 rotates, the threaded support 2
It is designed to move up and down in the vertical direction.

A worm gear 32 is integrally formed on the outer periphery of the threaded sleeve 31, and a worm shaft 33 is screwed into the worm gear.
is inserted horizontally into the fixed base 3.

Although the vertical adjustment structure of the screw column 2 is provided separately, both the left and right sides have exactly the same structure, and these can be adjusted independently.
Alternatively, adjustment operations can be made in conjunction with each other in opposite directions.

In addition, since the support shaft of this device receives a pressure load, a square screw is used as the thread form of the support, and a bearing bow 1v34 is interposed between the screw sleeve 31 and the fixed base 3 to tighten the screw. It is preferable to ensure smooth rotation of the sleeve 31.

In the device of the present invention, the screw support 2 supporting the roll shaft can be adjusted and moved up and down while remaining vertical.
Since the roll shaft support part of the screw strut is in a spherical bottom state, the roll shaft 11 is tilted by adjusting the support height of the screw strut 2 as shown in FIG. 1 can be tilted.

For example, when one of the supports 2b is raised by a distance t from the reference height, and at the same time the other support 2a is lowered by a distance t from the reference height, the roll shaft 11 is inclined by an angle β, and therefore the roll axis 11 is tilted by an angle β. /I/1 will also be tilted by an angle β.

Next, the operation of this device will be explained.

Now, if the flange of the section steel after welding is welded in a state in which the flange is tilted upward to the right by an angle α as shown in FIG. The screw strut 2b is raised by t, and at the same time, the other screw strut 2a is lowered by t.

As a result, the roll axis 11 is tilted by an angle β, and the roll 1
is also tilted to the left by an angle β (Fig. 7).

The pressure welding performed by the roll 1 in an inclined position restricts the entry of the flange material, and prevents the flange from collapsing in the shaped steel after welding (FIG. 4).

As shown in Fig. 5, the relationship between the amount of change in flange inclination △α and the amount of change in tilt angle △β corresponds to a nearly straight line, so it is possible to measure the value of flange inclination after welding. The angle required for tilting can be obtained by

Also, the angle △α△β mentioned above is not an angle but tan
The same effect can be obtained by treating it as α and tanβ.

Further, it is also possible to simultaneously raise and lower the screw supports 2a and 2b to adjust the roll height due to roll wear or the like.

According to the device of the present invention, continuous adjustment is possible without stopping the welding line, and the support mechanism can be tilted without moving the pressure contact point, so the quality of the weld is not affected. Pressure welds without causing flange collapse.

In addition, it allows effective squareness adjustment in a short adjustment time, and it is easy to quantitatively understand the adjustment allowance, which is effective in improving the quality of welded sections, and the increase in equipment costs is extremely small. Finish.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional surface angle correction means in the H-section steel welding process. FIG. 2 is an explanatory diagram similar to FIG. 1 according to the present invention. 3 and 4 are explanatory diagrams of the correction process in the means of the present invention. FIG. 5 is a diagram showing the relationship between the flange inclination angle and the roll inclination angle. FIG. 6 is a front sectional view of the device of the present invention. FIG. 7 is a front sectional view showing an embodiment of the present device during roll tilting. 1: Pressure welding low/L=, 11 Niroll shaft, 2: Threaded support, 21: Spherical bearing, 22: Threaded part, 3: Fixing base,
31: Threaded sleeve, 32: Worm gear, 33: Worm shaft, 34: Bearing ball.

Claims (1)

[Scope of utility model registration request] In a welding machine that manufactures shaped steel by high-frequency electric welding, etc. by horizontally assembling flange materials on both upper and lower edges of a web material that is transferred in an upright position in the width direction, a roll that presses the flange material against the web material is integrally fixed. A roll shaft that supports a roll shaft, and a spherical bearing that rotatably and swingably supports both ends of the roll shaft is held at the upper end, and a threaded portion is screwed into the lower end, and the shaft itself is erected as a bearing support. a pair of threaded struts, a rotatable internal threaded sleeve that vertically supports the threaded portion of the threaded struts and holds each threaded strut so that they can be raised and lowered separately; and a fixing base that rotatably holds the internal threaded sleeves. , an internally threaded sleeve rotation mechanism, and the rotation of the internally threaded sleeve changes the height of the threaded support to change the support angle of the roll shaft, thereby changing the pressure welding engagement angle of the pressure welding roll in the roll axis direction. A flange inclination correction device for a welded section steel, characterized in that the intersecting angle of a flange material with respect to a web material is corrected by changing the angle.