JP3132401B2 - Welded section support device for welded 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 welding section support apparatus used in a welding section steel manufacturing process for welding and assembling a flange member and a web member to produce a welding H-section steel, a welding T-section steel or the like. .

[0002]

2. Description of the Related Art Generally, a production line for welded H-section steels comprises an uncoiler, a leveler, a high-frequency welding machine,
It is configured by arranging a roller straightening machine, cutting machine, etc.
As shown in the figure, the upper and lower flange materials F and the web material W unwound from the uncoiler are positioned at a welding machine position by a pair of upper and lower press-contact rolls 1, 1 and a pair of left and right welding support rolls 2, 2 to make a front view I. Along with combining in a letter shape,
After the joint between the flange material and the web material is heated by a high-frequency current, it is welded by electric resistance or the like while applying pressure by the pressure roller 1.

[0003] In such a production line of a welded H-section steel,
If the center of each joining member is not correctly guided and supported, the relative positional relationship between each flange material F and the web material W is shifted, and a serious defect called so-called center deviation occurs. for that reason,
Generally, the web material W is supported between the upper and lower press rolls 1 and 1 by the web support roll 2, and the flange material F is generally guided by the flange guide roll 3 'in front of the welding point due to space restrictions. However, in this guide method, although the web material W is supported at the welding point, the position change is small, but the flange material F is guided on the upstream side of the welding point.
It is difficult to guide the flange material to the center of welding due to the large bending and inclination of the material. Particularly, in the case of a narrow-width, thin-walled flange material, it is difficult to correctly guide the flange material to the welding center due to the low rigidity of the steel material.

[0004] In order to solve such problems, the present inventor has devised the following guide support device which can reliably and stably guide the flange material to the welding center even when the material has a large bend. And has already filed an application.

[0005] Welded section guide device for welded section steel
As shown in FIG. 6 (a), the web support rolls 2 are fitted to a pair of upper and lower flange guide rolls 50 that can guide the flange end face, respectively, and the middle of the flange guide rolls 50. Part is supported by a support bracket 52 via a bearing 51.
And the upper and lower flange guide rolls 50 are tightened with bolts and nuts 53 so that the flange guide roll 50 and the web support roll 2 can rotate integrally. Further, in another embodiment, a bearing is interposed between the flange guide roll 50 and the web support roll 2 so that the flange guide roll 50 and the web support roll 2 can be individually rotated.

[0006] Shaped steel guide and support device (Japanese Utility Model Laid-Open No. 4-125)
No. 089) [or guide support roll device for section steel (Japanese Utility Model Publication No. 6-5030)] As shown in FIG.
An eccentric support shaft 61 is protruded from a main support shaft 60 that rotatably supports the flange guide roll 6 on the eccentric support shaft 61.
2 is rotatably mounted and can be fixed with a nut 63 etc.
By rotating the eccentric support shaft 61 by the operation unit 64, the relative position between the web support position of the web support roll 2 and the flange end surface support position of the flange guide roll 62 can be changed. The web support roll 2 and the flange guide roll 62 are mounted on a fixed support 66 at a mounting shaft 65.

[0007]

However, the conventional apparatus having a fixed structure in which the above-mentioned flange guide roll is incorporated into the web support roll has the following problems.

A) Whenever the shape of the steel is changed, it is necessary to replace the flange guide roll according to the flange width each time, and the replacement operation is troublesome and time-consuming. Further, it is necessary to have many types of flange guide rolls corresponding to the flange width, which is expensive and requires a storage space.

B) In the type in which the web supporting roll and the flange guide roll rotate integrally, a difference in rotational peripheral speed occurs because the diameters of the two rolls are different, and the abutting portion of the flange guide roll is liable to be worn. Need to replace the flange guide roll. Also, when the web support roll is worn and refurbished, the diameter of the web support roll becomes smaller, so the diameter of the flange guide roll must be changed accordingly.

In the conventional apparatus having an adjustable structure in which the above-mentioned flange guide roll is attached to the web supporting roll via an eccentricity adjusting mechanism, the flange width change, the wear of the flange guide roll, and the remodeling of the web supporting roll are required. Although the position of the guide roll can be easily adjusted without replacing the flange guide roll, the drawbacks of the conventional device can be solved, but there are the following problems.

A) Since the structure is such that the flange guide roll is directly mounted on the web support roll, the range of adjusting the position of the flange guide roll is small, and several types of weld support devices must be prepared according to the flange width of the shaped steel. Costly and requires storage space.

B) In the case where the flange width is wide, the diameter of the web support roll must be increased, and the weight increases, and replacement work is troublesome.

C) Since the flange guide roll and the web support roll are integrated, when the web support roll is replaced, it is necessary to adjust the position of the flange guide roll again.

D) Since the flange guide roll and the web support roll are integrated and a reaction moment of the web material / flange material acts thereon, the support structure of the web support roll needs to have a strong structure. In the case of (1), there is a disadvantage that it is structurally weak against the reaction force moment.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to adjust the position of the flange guide roll due to the change of the flange width, the wear of the flange guide roll, and the remodeling of the web support roll. Can be easily performed without replacing the flange guide rolls, the position adjustment range of the flange guide rolls can be increased, and the web and the flange can be simultaneously guided and supported by one common supporting device. An object of the present invention is to provide a part support device.

[0016]

According to a first aspect of the present invention, there is provided a welding section support apparatus for a welded section steel, comprising: a pressing roll for pressing a flange material and a web material at a welding position in a welding section steel manufacturing process; In a welded section support device for a welded section steel provided with a web support roll for guiding and supporting a side surface of a material, as shown in FIGS. 1 and 2, a flange guide roll for guiding an end surface of a flange material is provided with respect to the web support roll. And a roll that can be independently driven and rotated, and provided on a support bracket of a web support roll via an eccentricity adjustment mechanism, and can be moved and adjusted in the width direction of the flange material, and can be fixed to the support bracket. I do. The eccentricity adjusting mechanism includes an eccentric shaft rotatably supported at an intermediate portion of the support bracket of the web support roll, and a fixing member capable of fixing the eccentric shaft to the support bracket at an arbitrary rotation position. A flange guide roll is rotatably mounted on a pair of upper and lower eccentric shaft portions, and is positioned above and below the web support roll.

The second welded section support device for welded section steel according to the present invention guides and supports a press roll for pressing a flange member and a web member and a side face of the web member at a weld position in a welding section steel manufacturing process. As shown in FIG. 5, in a welding section support device for a welded section provided with a web supporting roll, a flange guide roll for guiding an end face of a flange material is provided as a roll independently rotatable with respect to the web supporting roll. The slide bracket is provided on a support bracket of the web support roll via a slide adjustment mechanism, and is movable and adjustable in the width direction of the flange material and can be fixed to the support bracket.

The slide adjusting mechanism includes a slide member for mounting the mounting shaft of the flange guide roll on the support bracket of the web support roll so as to be slidable in the flange width direction, and a drive device such as a turnbuckle or a hydraulic cylinder for sliding the slide member. Constitute.

In the above configuration, when the flange width is changed, the flange guide roll is worn, and the position of the flange guide roll is adjusted in accordance with the cutting of the web support roll, the flange guide rolls positioned above and below the web support roll are eccentrically adjusted. It is moved in the flange width direction by a mechanism or a slide adjustment mechanism, and is fixed to the support bracket of the web support roll, so that the outer peripheral contact surface of the flange guide roll is positioned at the end face of the flange material. In this state, the web is guided by the web support roll, the end face of the flange material is guided by the flange guide roll in substantially the same vertical plane, and the web and the flange material are pressed by the pressure roll while the centers of the web and the flange material coincide with the welding center position. Is performed to produce a high-quality welded H-section steel having no center deviation.

Since the web supporting roll and the flange guide roll are independently driven and rotated, the flange guide roll does not slip with respect to the end surface of the flange material. Since the position of the flange guide roll in the flange width direction can be adjusted, there is no need to replace the flange guide roll for flange width change or the like. Since the flange guide roll is attached to the support bracket independently of the web support roll, the diameter of the flange guide roll can be increased, the amount of movement adjustment thereof can be increased, and the applicable flange width range can be widened. Further, a normal roll can be used as the web supporting roll. Furthermore, since the web support roll and the flange guide roll are mounted on the same support bracket, the support structure can be simplified, the support can be made stronger than the cantilever type, and replacement, maintenance and storage are possible at the same time. Become.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in the drawings. This is an example in which the present invention is applied to a welded H-section steel production line. FIGS. 1 to 4 show a first embodiment of a welded portion supporting apparatus according to the present invention, and FIG. 5 shows a second embodiment.

In FIG. 1, the welding portion supporting device is a pair of upper and lower flanges which press down the outer surfaces of the upper and lower flange members F of the H-section steel and press the high-frequency heated flange members F and the web member W in the same manner as in the prior art. The pressing rolls 1, 1 and the pressing rolls 1, 1
And a pair of left and right web supporting rolls 2 and 2 for guiding and supporting the upper and lower side surfaces of the web W from the left and right sides respectively in the same vertical plane as the pressure contact position by the welding, and guide the end surface of the flange material F in front of the welding point. Flange guide roll 3 '
And a high-frequency power supply 4 connected to the flange material F and the web material W via a power supply.

In such a welding part supporting apparatus, FIG.
In the first embodiment shown in FIG. 4, a flange guide roll 3 is provided on a support bracket 5 of a web support roll 2 via an eccentricity adjusting mechanism 6, and the flange guide rolls 3, 3 located above and below the web support roll 2 are used. Guide the upper and lower flange end faces at the welding point.

As shown in FIG. 2, the web supporting roll 2
Is a roll structure generally used in the related art, and is disposed in a pair of upper and lower portions at the tip of the support bracket 5, and is rotatably driven by supporting the mounting shaft 7 via a bearing 8. The support bracket 5 is a member whose base is bolted to a support base (not shown) or the like. Brackets 5b and 5c for attaching an eccentricity adjusting mechanism are newly provided above and below a central bracket 5a to which the web support roll 2 is attached. An eccentricity adjusting mechanism 6 is attached to an intermediate portion of such a support bracket 5, and a pair of upper and lower flange guide rolls 3 is attached to the eccentricity adjusting mechanism 6.

As shown in FIG. 2, the eccentricity adjusting mechanism 6 mainly includes an eccentric shaft 10 and a fixing ring 11 for fixing the eccentric shaft 10 to the support bracket 5. Eccentric shaft 10
Are an intermediate shaft portion 10a, an eccentric shaft portion 10b integrally provided above and below the intermediate shaft portion 10a, and an upper eccentric shaft portion 1
0b, and a supporting shaft 10d integrally provided on the lower surface of the lower eccentric shaft 10b. The intermediate shaft 10a, the operating shaft 10c.
Eccentric shaft portion 10b relative to the central axis L ₀ of the support shaft portion 10d
And by decentering the central axis L _E by a distance e.

The intermediate shaft portion 10a is disposed in the mounting hole of the central bracket 5a, and the flange guide rolls 3 are mounted on the upper and lower eccentric shaft portions 10b via bearings 12, respectively, so that the upper and lower eccentric shaft portions can be independently driven and rotated. The flange guide roll 3 is configured to have an L-shaped cross section from a roll body 3a having a narrow width and a body 3b, and has a central bracket 5a and upper and lower brackets 5b, 5b.
c so that it can be disposed close to the web support roll 2. The bearing 12 is sealed with an oil seal 14 with a spacer 13 interposed therebetween.

The eccentric shaft 10 has an intermediate shaft portion 10a supported by a central bracket 5a and an operating shaft portion 10c having a fixed ring 1
1, the support shaft 10d is supported by the lower bracket 5c, and by rotating the operating shaft 10c with a monkey spanner or the like, the eccentric shaft 10b is moved to the center axis L _0. And the flange end face contact position of the flange guide roll 3 is zero.
Ｅ2e (see FIG. 3).

In the illustrated example, the intermediate shaft portion 10a has a stepped bearing structure, and the load applied to the flange guide roll 3 is reduced by the central bracket 5a and the upper and lower brackets 5a.
b and 5c, the eccentric shaft 10b is entirely formed from the top to the bottom without the intermediate shaft portion 10a, and the central bracket 5a is large enough to allow the eccentric shaft 10b to rotate eccentrically with a margin. An opening having a diameter may be provided. In this case, the upper and lower brackets 5b and 5c receive a load applied to the flange guide roll 3. However, when several types of eccentric shafts 10 are required according to the flange width, the eccentric shafts 10 having different diameters are shared. It can be attached to the support bracket 5, which is more convenient.

The fixing ring 11 rotates the eccentric shaft 10 to adjust the position of the flange guide roll 3, and then fixes the eccentric shaft 10 to the upper bracket 5b by bolting. A bolt hole 21 through which a bolt 20 can be inserted is formed in the fixed ring 11 that rotates together with the eccentric shaft 10, and a female screw 22 is formed in the bracket 5b and bolted (see FIGS. 2 and 3). The same number of bolt holes 21 and female screws 22 may be provided on the concentric circles at the same pitch, but the eccentric shaft 10 can be rotated only by the angle of the pitch, so that the eccentric position of the flange guide roll 3 can be finely adjusted. Since fine adjustment cannot be performed, if fine adjustment is required, the numbers of the female screw 22 and the bolt holes 21 are made different so that fine adjustment can be performed.

More specifically, the fixing ring 11 is provided with an even number of slightly larger bolt holes 21, and the bracket 5 b is provided with more (or less) female screws 22 than the number of the bolt holes 21. The bolts 20 are inserted and fixed at the corresponding locations. As the number of the bolt holes 21 increases, the fine adjustment of the eccentricity can be finer. Further, it is desirable that the number of female screws 22 is one more (or less) than the bolt holes 21, but in this case, there is only one place on the circumference where the bolt holes 21 and the female screws 22 match. Stop bolt 2
If two 0s are required, the number of bolt holes 21 and the number of female screws 22 may be even. When the load of the flange guide roll 3 is received only by the upper and lower brackets 5b and 5c, it is advantageous to fix the fixing ring 11 with two bolts 20.

FIG. 4 shows a case where the bolt holes 21 are arranged in eight equal parts and the female screws 22 are arranged in nine equal parts. The bolts can be inserted and fixed at the position shown in FIG. By rotating the fixing ring 11 by 40 ° or 5 °, or at the position of ′, the bolt hole 21 and the female screw 22 are aligned, and the bolt can be bolted at one place. When the bolt holes 21 are equally divided into eight and the female screws 22 are equally divided into ten, two positions are matched by rotating by 36 °. Bolt hole 21 and female screw 2
By increasing the number of 2, fine adjustment can be made finely. The number of the bolt holes 21 and the internal threads 22 may be determined depending on the adjustment accuracy of the position of the flange guide roll 3.

The fixing member 11 has a substantially rectangular mounting hole 23 at the center thereof corresponding to the cross section of the operating shaft 10c so that the fixing member 11 can rotate integrally with the operating shaft 10c. The supporting bracket 5b is rotatably supported by the fitting step 11a (see FIG. 2). Further, the fixing member is not limited to the above-described structure, and may be any member that can fix the eccentric shaft 10 at an arbitrary rotation position.

In the above structure, (1) As shown in FIG. 2, the distance a from the welding center position to the flange end face is determined from the width of the flange material F and the thickness of the web material W of the welded H-section steel to be manufactured. The eccentric amount of the flange guide roll 3 is adjusted by rotating the eccentric shaft 10 by the operating shaft portion 10a based on the distance a, and the outer circumferential contact surface position of the flange guide roll 3 contacts the flange end surface, or Set so that there is a slight gap between the flange end face. Next, the fixing member 11 is attached to the upper bracket 5b by the bolt 20.
Fix with.

(2) The vertical pressing rolls 1 and 1 are moved up and down according to the web height of the welded H-section steel (normally, only the upper pressing roll 1 is moved up and down), and the support bracket 5 is moved to the web material W. The horizontal position is adjusted by appropriate means according to the thickness, and the vertical position of the support bracket 5 is adjusted so that the upper and lower flange guide rolls 3 and 3 are located at the positions of the upper and lower flange materials F of the welded H-section steel. For various web heights, a support bracket 5 in which a web support roll 2 and a flange guide roll 3 of dimensions corresponding to these are assembled is prepared, and these are appropriately selected.

In the above state, the web supporting roll 2
In the case where a mechanism for correcting the inclination of the flange material F is adopted for the pressing roll 1, the end face of the flange material F is guided by the flange guide roll 3 in substantially the same vertical plane. When the inclination of the material F is corrected and the center of the web W and the center of the flange material F coincide with the welding center position, pressure welding is performed by the pressure welding roll 1 to produce a high-quality welded H-section steel without center deviation. .

In the case of the welding portion support apparatus of the first embodiment, a) since the flange guide roll 3 can be driven and rotated independently of the web support roll 2, the flange guide roll 3 It is possible to reduce the wear of the outer peripheral surface of the flange guide roll 3 without slipping.

B) Since the position of the flange guide roll 3 in the width direction of the flange material can be adjusted, there is no need to exchange the flange guide roll for changing the flange width, abrasion of the flange guide roll, and remodeling of the web support roll. Since only the flange guide rolls need to be prepared, the number of flange guide rolls held can be reduced, and the cost and storage space can be significantly reduced. Further, since no replacement work is required, setup time and adjustment time can be greatly reduced.

C) Since the flange guide roll 3 is attached to the support bracket 5 independently of the web support roll 2,
The diameter of the flange guide roll 3 can be increased,
Also, the eccentricity of the eccentricity adjusting mechanism 6 can be increased,
The applicable flange width dimension range can be widened,
One weld support device can be applied to a wide range of sizes of welded H-sections.

D) A large-diameter driven roll can be used for the flange guide roll 3, so that the wear of the guide portion can be reduced and the strength of the bearing can be increased.
The web support roll 2 does not need to have a large diameter as in the related art, even if the flange width is wide.

E) Since the web support roll 2 and the flange guide roll 3 are mounted on the same support bracket 5, the support structure can be simplified and the support can be made stronger than in the cantilever type. When replacing the web support roll 2, the flange guide roll 3 must be removed from the structure, but the replacement, maintenance, and storage of the web support roll 2 and the flange guide roll 3 can be performed simultaneously.

Next, in the second embodiment shown in FIG. 5, a slide adjusting mechanism 30 is used instead of the eccentricity adjusting mechanism. The structure of the web support roll 2, the flange guide roll 3, and the support bracket 5 is the same as that of the first embodiment, and the flange guide roll 3 is moved forward and backward in the flange width direction by a pair of upper and lower turnbuckles 31 or the like.

A pair of upper and lower flange guide rolls 3 are rotatably mounted on a mounting shaft 32, and a mounting hole 33 of a central bracket 5a through which an intermediate portion of the mounting shaft 32 is inserted is long in a flange width direction corresponding to a reciprocating movement stroke. Hole. Similar long holes or long grooves 34 are formed in the upper and lower brackets 5b and 5c.
And a slide block 35 is mounted on the upper and lower portions of the mounting shaft 32 inserted therethrough, and a turnbuckle 3 is attached to the slide block 35 and the substrate of the support bracket 5.
1 are connected to each other. Upper and lower brackets 5b,
The slide guide 36 of the slide block 35 is attached to 5c.

In the second embodiment, by simply rotating the turnbuckle 31, the flanging guide roll 3 can be moved forward and backward to adjust the position and fix it at an arbitrary position. In addition, it is not limited to the turnbuckle 31,
A hydraulic cylinder or the like that can be fixed at an arbitrary position can be used. In the case of the second embodiment, it goes without saying that the same effects as those of the first embodiment can be obtained.

Although an example in which the present invention is applied to a production line for a welded H-section steel has been described above, it is needless to say that the present invention is not limited to this and can be applied to other welded steel sections.

[0045]

As described above, according to the present invention, the flange guide roll for guiding the end surface of the flange material is a roll separate from the web support roll, and the eccentricity adjustment mechanism or the slide adjustment mechanism is provided on the support bracket of the web support roll. As a result, the following effects can be obtained.

(1) The position of the flange guide roll can be easily adjusted without changing the flange guide roll without changing the flange width, wear of the flange guide roll, and remodeling of the web support roll. Since it is provided on the roll support bracket, the diameter of the flange guide roll can be increased, and the amount of movement can be increased. The support device allows it to be applied to a wide range of welded steel shapes. A usual roll can be used for the web support roll. As a result, the cost of the apparatus and the storage space can be significantly reduced, and the workability can be greatly improved.

(2) The web support roll and the flange guide roll are independently driven and rotated, eliminating slippage due to a difference in peripheral speed of the flange guide roll, reducing wear of the flange guide roll, and providing a large diameter for the flange guide roll. , The wear can be reduced, and the strength of the bearing can be increased. This makes it possible to stably guide the flange material over a long period of time, prevent eccentricity between the web material and the flange material, and produce a welded steel of high quality.

(3) Since the web support roll and the flange guide roll are mounted on the same support bracket, the support structure can be simplified, the support can be made stronger than the cantilever type, and the structure is relatively simple and inexpensive. In addition to providing a welded part supporting device, the welded steel can be stably guided and supported. Further, replacement, maintenance, and storage of the web support roll and the flange guide roll can be performed simultaneously.

[Brief description of the drawings]

FIG. 1 is a first embodiment of a welded section support device for welded steel according to the present invention, wherein (a) is a side view and (b) is a cross-sectional view.

FIG. 2 is a detailed partial cross-sectional view of the welding portion support device of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a schematic plan view showing a fine adjustment mechanism of an eccentric shaft fixing ring in the welding portion support device of FIG. 1;

5A and 5B show a second embodiment of a welded section support device for welded steel according to the present invention, wherein FIG. 5A is a partial sectional front view, and FIG. 5B is a partial transverse sectional view.

6A and 6B show a conventional welding portion support device, in which (a) is a device having a structure in which a flange guide roll is incorporated into a web support roll, and (b) is a structure in which the flange guide roll is attached to the web support roll via an eccentricity adjustment mechanism. Device.

7A and 7B are a conventional general welded portion support device, in which FIG. 7A is a side view and FIG. 7B is a transverse sectional view.

[Explanation of symbols]

 F ... Flange material W ... Web material 1 ... Pressing roll 2 ... Web support roll 3 ... Flange guide roll 4 ... High frequency power supply 5 ... Support bracket 6 ... Eccentricity adjustment mechanism 7 ... Mounting shaft 8 ... Bearing 9 ... Bearing fixing nut 10 ... Eccentric shaft 10a ... Intermediate shaft portion 10b ... Eccentric shaft portion 10c ... Working shaft portion 10d ... Support shaft portion 11 ... Fixing ring 12 ... Bearing 13 ... Spacer 14 ... Oil seal 20 ... Bolt 21 ... Bolt hole 22 ... Female screw 23 ... Mounting hole DESCRIPTION OF SYMBOLS 30 ... Slide adjustment mechanism 31 ... Turnbuckle 32 ... Mounting shaft 33 ... Mounting hole 34 ... Long hole or slot 35 ... Slide block 36 ... Slide guide

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23K 37/04 B23K 20/00 B23K 20/26 B21C 37/00

Claims (2)

(57) [Claims] An apparatus for supporting a welded section of a welded section comprising a pressure roll for pressing a flange material and a web material and a web support roll for guiding and supporting a side surface of a web material at a weld position in a welding section steel manufacturing process. A flange guide roll that guides the end surface of the flange material is a roll that can be independently driven and rotated with respect to the web support roll, and is provided on a support bracket of the web support roll via an eccentricity adjustment mechanism; A welded section support device for welded steel, wherein the apparatus can be adjusted to move in a direction and can be fixed to the support bracket. 2. An apparatus for supporting a welded section of a welded section, comprising: a press-contact roll for pressing a flange member and a web member at a weld position in a welding section steel manufacturing process; and a web support roll for guiding and supporting a side surface of the web member. A flange guide roll that guides the end surface of the flange material is a roll that can be independently driven and rotated with respect to the web support roll, and is provided on a support bracket of the web support roll via a slide adjustment mechanism; A welded section support device for welded steel, wherein the apparatus can be adjusted to move in a direction and can be fixed to the support bracket.