JPH0815601B2 - Equipment for manufacturing steel aggregate with sleeve holes - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention provides a steel material used as construction steel facilities, pipes and da penetrating the beam
To reduce the weight and cross-sectional performance.
The present invention relates to an apparatus for manufacturing an iron aggregate with a sleeve hole for producing an iron aggregate having a sleeve hole in order to improve .

[0002]

2. Description of the Related Art Conventionally, the following is generally known as this kind of steel aggregate.

As shown in FIG. 5, upper and lower angle members 2
A so-called lattice structure in which 0s are connected to each other by diagonally arranged lattice members 21 to form a sleeve hole 22 and the whole is formed in a truss shape.

As shown in FIG. 6, an H-shaped steel 23 formed by rolling or the like is cut into a substantially saw-tooth shape at a web 24 portion,
As shown in FIG. 7, a so-called honeycomb structure in which a substantially saw-toothed convex portion of the web 24 is welded to form a sleeve hole 22 and is integrally made of a steel aggregate.

[0005]

However, in the steel frame material, the number of parts is enormous, such as the upper and lower angle members 20 and the large number of lattice members 21, which makes the assembling work difficult. Therefore, it takes a lot of time to manufacture the steel aggregate, and the manufacturing cost also increases accordingly.

[0006] Further, although the steel aggregate can have a better cross-sectional performance than the above-mentioned steel aggregate, in the production, the manufacturing process of the H-section steel 23, that is, a web cutting process completely different from the production line. And a welding process is required, and the products cannot be manufactured by flowing them on the same production line.

Therefore, this steel aggregate also requires a lot of manufacturing time, resulting in a high manufacturing cost.

On the other hand, the demand for steel aggregates in recent years has increased significantly, and production is not in time. However, the steel aggregate having the sleeve holes is particularly difficult to manufacture as described above, and measures are taken to reduce the number of the sleeve holes so that the manufacturing is easy.

However, in reality, such a limited steel frame material with a sleeve hole cannot follow the trend of buildings in recent years, and it is the actual situation that it is difficult to cope with it.

The present invention was devised in view of the above-mentioned circumstances, and an object thereof is to make it possible to continuously and smoothly manufacture an iron aggregate with a sleeve hole, thereby reducing the manufacturing cost and the above-mentioned conventional method. An object of the present invention is to provide a steel aggregate manufacturing apparatus capable of improving the cross-sectional performance like the honeycomb structure.

[0011]

SUMMARY OF THE INVENTION The present invention is an apparatus for manufacturing an iron aggregate in which a plurality of sleeve holes are formed at predetermined intervals in the longitudinal direction of the web of the iron aggregate on a rolling line for producing the iron aggregate. a slit extending a predetermined distance in the longitudinal direction of the web in fusing to the steel material at a later stage of the intermediate mill web by gas cutting torch or the like of the web length in the rolling line
A slit forming portion provided at a predetermined interval in the hand direction, and a slit forming portion provided at both ends of the web of the steel aggregate in a subsequent stage.
Place both flanges inside the flange and the flange respectively.
Small rolls sandwiched from the outside are arranged facing each other in the web width direction
A pair of small rolls made by
A plurality of widening devices arranged in the rolling direction of the steel aggregate so as to gradually expand toward the latter stage of the line , and the iron
And a finishing device for rolling and shaping the aggregate .

Then, in the process of rolling and manufacturing the iron aggregate on the rolling line for producing the iron aggregate, a plurality of slits are provided at predetermined intervals in the longitudinal direction of the web of the iron aggregate, and the slits are enlarged to form sleeve holes. The steel aggregate with a sleeve hole can be produced by rolling it into rolling production.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for manufacturing a steel aggregate with a sleeve hole according to the present invention will be described below with reference to embodiments shown in the drawings.

In the steel aggregate manufacturing apparatus 1 (see FIG. 1), the web 5 of the steel aggregate 3 is cut by a gas cutting torch 6 or the like at a stage subsequent to the intermediate rolling mill 4 for the steel aggregate 3 in the rolling forming process. The slit forming portion 8 is provided with slits 7 extending at a predetermined distance in the longitudinal direction of the web 5 at predetermined intervals.

Further, in the subsequent stage of the slit forming portion 8, the flanges 9 and 9 at both ends of the web 5 in the steel frame 3 are vertically sandwiched, and the interval between the rolls facing each other is gradually increased so as to widen the web 5 in the web width direction. A web widening device 11 in which a plurality of pairs of small rolling rolls 10 are arranged in the rolling direction so as to be spread is provided.

Then, the web 5 is widened through the finishing device 12 that rolls and shapes the web in the latter stage of the web widening device 11, so that the slit 7 is enlarged to form the sleeve hole 1.
3 is configured to be manufactured.

That is, the plurality of small rolling rolls 10 in the web widening device 11 are arranged in two rows with both flanges 9, 9 sandwiched therebetween, and each row advances the steel aggregate 3 of the rolling line 2. It is arranged in a substantially V shape that gradually expands in the direction.

Each row of the plurality of small-sized rolling rolls 10 spreads in a substantially C-shape in the traveling direction of the steel aggregate 3, so that a tensile force is applied to both flanges 9 and 9 in a direction to widen the web 5. It is possible to add.

Next, the operation of the present invention will be described.

First, as shown in FIG. 2, a slit is formed in the web 5 of the roll-formed steel aggregate 3 on the rolling line 2 to form a slit 7 extending a predetermined distance in the longitudinal direction of the web 5. Provide a plurality at intervals.

Next, as shown in FIG. 3, on the rolling line 2 which is the subsequent stage of the slit forming portion 8, the width of the web 5 is expanded to both flanges 9 and 9 at both ends of the web 5 of the steel aggregate 3. Apply tensile force to.

By this pulling force, the web 5 is stretched outwardly of the flanges 9 and 9, and the web 5 is stretched to enlarge the slit 7 formed in the web 5 to enlarge the sleeve hole 13. And

As described above, according to the iron aggregate manufacturing apparatus 1 of the present invention, a plurality of sleeve holes 13 are formed at predetermined intervals in the longitudinal direction of the web 5 of the iron aggregate 3 on the rolling line 2 for producing the iron aggregate. The steel aggregate with a sleeve hole (see FIG. 4) can be integrally formed to improve the cross-sectional performance and can be manufactured on a rolling line.

[0024]

EFFECT OF THE INVENTION According to the present invention, the rolling process of the steel aggregate which is continuously performed by heating the vicinity of the slit by the torch on the rolling line for producing the steel aggregate makes it possible to smoothly move the steel aggregate in the longitudinal direction of the web. It is possible to easily form a plurality of sleeve holes at predetermined intervals.

Therefore, the cross-section performance can be improved by integrally forming the steel aggregate with a sleeve hole by rolling manufacturing. Further, since rolling can be performed continuously and smoothly, it is possible to inexpensively provide the steel aggregate with a sleeve hole.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a steel aggregate manufacturing apparatus of the present invention.

FIG. 2 is a schematic view showing a manufacturing process of a steel aggregate with a sleeve hole by the steel aggregate producing apparatus of the present invention.

FIG. 3 is a schematic view showing a manufacturing process of a steel aggregate with a sleeve hole by the steel aggregate producing apparatus of the present invention.

FIG. 4 is a schematic view showing a manufacturing process of a steel aggregate with a sleeve hole by the steel aggregate producing apparatus of the present invention.

FIG. 5 is a schematic front view showing a conventional steel aggregate.

FIG. 6 is a schematic front view showing a conventional steel aggregate.

FIG. 7 is a schematic view showing a manufacturing process of a conventional steel aggregate.

[Explanation of symbols]

1 ... Steel aggregate manufacturing device, 2 ... Rolling line, 3 ... Steel aggregate, 4 ... Intermediate rolling mill, 5 ... Web, 6 ... Cutting torch, 7 ... Slit, 8 ... Slit forming unit , 9 ……
Flange, 10 ... Small rolling roll, 11 ... Web widening device, 12 ... Finishing device, 13 ... Sleeve hole.

Continuation of front page (56) Reference JP-A-2-99201 (JP, A) JP-A-60-83702 (JP, A) JP-A-62-168601 (JP, A) JP-A-63-207404 (JP , A) JP-B-45-8337 (JP, B1) JP-B 1-22041 (JP, B2) JP-B 1-50482 (JP, B2)

Claims (1)

[Claims] 1. A manufacturing apparatus of a steel aggregate for forming a plurality of sleeve holes at a predetermined interval in a web longitudinal direction of the steel aggregate on a rolling line for producing the steel aggregate, the latter stage of an intermediate rolling mill in the rolling line. In the longitudinal direction of the web, a slit extending in the longitudinal direction of the web by a fusing with a gas cutting torch or the like is formed in the steel frame web.
A slit forming portion provided at a predetermined interval in the direction, and at both ends of the web of the steel aggregate at a stage subsequent to the slit forming portion.
Position both flanges inside the flange and the flange respectively.
The small rolls sandwiched from the outside are placed facing each other in the web width direction.
The small roll pair formed by location, pressure of the opposing distance is steel material
A plurality of widening devices arranged in the rolling direction of the steel aggregate so as to gradually expand toward the latter stage of the rolling line, and a finishing device for rolling and shaping the steel aggregate at the latter stage of the widening device, the slits are enlarged to form sleeve holes. An apparatus for manufacturing a steel aggregate with a sleeve hole, which is characterized by being formed.