JPH04262802A - Manufacture of steel work material with sleeve and device therefor - Google Patents

Abstract

PURPOSE:To provide a manufacture of steel work material which can manufacture steel work material with sleeve continuously and smoothly, reduced in manufacturing cost and improved in cross sectional properties through integral forming. CONSTITUTION:On a rolling line 2 for manufacturing steel work material, plural slits 7 are provided on a web 5 of rolled steel work material 3 at a prescribed interval, then, tensile forces are given to both flanges 9, 9 at both ends of the web in the directions opposite to the web side and respectively to the reverse directions, the web 5 is extended in both flange directions to enlarge the slits 7 and to make sleeves 13. In this way, the sleeved steel work material 3 is manufactured by integral forming continuously and smoothly through a rolling process of steel work material 3 on the rolling line 2.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] This invention relates to a steel frame manufacturing method and apparatus for manufacturing steel frames used in construction, etc., particularly steel frames with sleeves formed to reduce weight. It is.

0002

BACKGROUND OF THE INVENTION Conventionally, as this type of steel frame material, the following are generally known.

[0003] As shown in Fig. 5, upper and lower angle members 20 are connected by a lattice member 21 disposed diagonally between the two angle members 20 to form a sleeve 22, and the whole is formed in a truss shape. It has a so-called lattice structure, which is made of steel frame material.

[0004] As shown in FIG. 6, an H-shaped steel 23 formed by rolling or the like is cut into a substantially sawtooth shape at the web 24, and as shown in FIG. The so-called honeycomb structure is made up of an integral steel frame material with the sleeve 22 welded to form the sleeve 22.

[0005]

[Problem to be Solved by the Invention] However, the steel frame material (2) requires an enormous number of parts, such as the upper and lower angle members 20 and a large number of lattice members 21, making assembly work difficult. Therefore, a lot of time is required to manufacture the steel frame material, and the manufacturing cost also increases accordingly.

[0006]Also, the steel frame material (①) can have a better cross-sectional performance than the steel frame material (③) described above, but during manufacturing, the manufacturing process of the H-section steel 23, that is, a completely different web from the production line. Cutting and welding processes are required, making it impossible to smoothly manufacture them on the same production line.

[0007] Therefore, this steel frame material (2) also requires a lot of manufacturing time, resulting in high manufacturing costs.

On the other hand, the demand for steel frame materials has increased so much in recent years that production cannot keep up with the demand. However, as mentioned above, it is particularly difficult to manufacture steel frames having sleeves, and measures such as reducing the number of sleeves are being taken to make manufacturing easier.

[0009] However, in reality, such limited sleeved steel frame materials cannot keep up with the recent building trends, and we are struggling to keep up with them.

[0010] This invention was devised in view of the above-mentioned circumstances, and its purpose is to enable the continuous and smooth production of steel frames with sleeves, thereby reducing the production cost, and at the same time eliminating the need for the conventional method described above. It is an object of the present invention to provide a method for manufacturing a steel frame material that can improve cross-sectional performance like a honeycomb structure, and an apparatus for manufacturing the same.

[0011]

[Means for Solving the Problems] According to the present invention, a cut is made in a web of a rolled steel frame on a rolling line for producing steel frames, and a predetermined distance is made in the longitudinal direction of the web. A plurality of extending slits are provided at predetermined intervals. Further, at the subsequent stage of this slit forming part, a tensile force is applied to both flanges at both ends of the web in the direction opposite to the web side and in the opposite directions, respectively, to stretch the web in the direction of both flanges, forming a web. The slits are expanded to form sleeves, and a plurality of sleeves are bored at predetermined intervals in the longitudinal direction of the web of the steel frame material.

[0012] During the rolling manufacturing process of steel frames on a rolling line for producing steel frames, a plurality of sleeves are bored at predetermined intervals in the longitudinal direction of the web of the steel frames. This allows continuous and smooth production by molding.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The method and apparatus for manufacturing a steel frame with a sleeve according to the present invention will be explained below with reference to an illustrative example.

First, a description will be given of the apparatus for producing steel frames with sleeves. On a rolling line for producing steel frames, a steel frame production apparatus 1 (Fig. 1) is a process in which the web 5 of the steel frame 3 is cut in the longitudinal direction by making an incision with a gas cutting torch 6 or the like in the subsequent stage of the rough processing section 4 for the steel frame 3 during the rolling forming process in the rolling line 2. A slit forming portion 8 is provided in which slits 7 extending a predetermined distance are provided at predetermined intervals.

Further, at the rear stage of the slit forming part 8, the flanges 9, 9 at both ends of the web 5 in the steel frame 3 are held, and the flanges 9, 9 are attached to the flanges 9, 9 in the direction opposite to the web 5 side. A web stretching section 11 is composed of a plurality of small rolling rolls 10 that apply tensile forces in opposite directions, and stretches the web 5 toward both flanges 9, 9.
It is equipped with

Then, the web 5 is stretched through the final processing section 12 after the web stretching section 11, so that the steel frame 3 having the sleeve 13 in which the slit 7 is enlarged is manufactured. It is configured.

Note that the web stretching section 11 in this embodiment
The plurality of small rolling rolls 10 have both flanges 9,
9 are arranged in two rows with the steel frames 9 sandwiched between them, and each row is arranged in a substantially V-shape that gradually widens in the direction of progress of the steel frame 3 of the rolling line 2.

Each row of the plurality of small rolling rolls 10 spreads out in a substantially V-shape in the direction of progress of the steel frame 3, so that it is applied to both flanges 9, 9 in the direction opposite to the web 5 side. Moreover, it is possible to apply tensile forces in opposite directions.

Steel frame manufacturing apparatus 1 having such a configuration
A sleeved steel frame material is manufactured using the manufacturing method of the present invention as described below.

First, as shown in FIG. 2, a cut is made in the web 5 of the rolled steel frame material 3 on the rolling line 2 to form a slit 7 extending a predetermined distance in the longitudinal direction of the web 5. Provide multiple at intervals.

Next, as shown in FIG. 3, on the rolling line 2 which is the latter stage of this slit forming part 8, a flange 9, 9 on both ends of the web 5 in the steel frame 3 is attached to the side opposite to the web 5 side. The tensile forces are applied in the opposite directions.

The web 5 is stretched in the direction of both flanges 9 by this tensile force, and by stretching the web 5, the slit 7 formed in the web 5 is enlarged to form the sleeve 13. .

As described above, according to the steel frame manufacturing method carried out by the steel frame manufacturing apparatus 1 of the present invention, on the rolling line 2 for manufacturing steel frames, the sleeve 13 is placed in a predetermined position in the longitudinal direction of the web 5 of the steel frame 3. A plurality of sleeved steel frames (see FIG. 4), which are drilled at intervals, can be formed into one piece to improve cross-sectional performance, and can be manufactured continuously and smoothly by rolling.

[0024]

[Effects of the Invention] According to the present invention, a plurality of sleeves are bored at predetermined intervals in the longitudinal direction of the web of the steel frame material during the rolling manufacturing process of the steel frame material that is continuously carried out on the rolling line for manufacturing the steel frame material. Can be done.

[0025] Therefore, by integrally forming the sleeved steel frame material by rolling, it is possible to obtain a material with good cross-sectional performance. Further, since it can be manufactured continuously and smoothly by rolling, the steel frame material with sleeves can be provided at low cost.

[Brief explanation of the drawing]

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

FIG. 2 is a schematic view showing the manufacturing process of a steel frame with a sleeve in the manufacturing method of the present invention using the steel frame manufacturing apparatus of the present invention.

FIG. 3 is a schematic view showing the manufacturing process of a steel frame with a sleeve in the manufacturing method of the present invention using the steel frame manufacturing apparatus of the present invention.

FIG. 4 is a schematic view showing the manufacturing process of a sleeved steel frame in the manufacturing method of the present invention using the steel frame manufacturing apparatus of the present invention.

FIG. 5 is a schematic front view showing a conventional steel frame material.

FIG. 6 is a schematic front view showing a conventional steel frame material.

FIG. 7 is a schematic diagram showing a conventional manufacturing process of steel frame materials.

[Explanation of symbols]

1... Steel frame manufacturing equipment, 2... Rolling line, 3... Steel frame material, 4
... rough processing section, 5 ... web, 6 ... cutting torch, 7 ... slit, 8 ... slit forming section, 9 ... flange, 10 ... small rolling roll, 11 ... web stretching section, 12 ... final processing section, 13 ... sleeve.

Claims (2)

[Claims] Claim 1: By cutting a web of rolled-formed steel frame material on a rolling line, a plurality of slits extending a predetermined distance in the longitudinal direction of the web are provided at predetermined intervals, and the slit forming portion is On the rolling line, which is the latter stage, a tensile force is applied to both flanges at both ends of the web in the steel frame material in a direction opposite to the web side and in opposite directions, and this tensile force causes the web to is stretched toward both flanges, and
By stretching this web, the slits formed in the web are enlarged to form a sleeve, and on the rolling line for manufacturing the steel frame material, the sleeve is stretched at a predetermined interval in the longitudinal direction of the steel frame web. A method for manufacturing a steel frame material with a sleeve, characterized by drilling multiple holes in the sleeve. 2. A steel frame manufacturing device for drilling a plurality of sleeves at predetermined intervals in the longitudinal direction of a web of steel frames on a rolling line for manufacturing steel frames, wherein the steel frames are rolled and formed during the rolling process on the rolling line. A slit forming section that provides slits extending a predetermined distance in the longitudinal direction of the web at predetermined intervals by making incisions in the web of the steel frame material with a gas cutting torch or the like at a subsequent stage of the rough machining section for the steel frame material, and this slit forming section. At the latter stage, a plurality of small rolling rolls are used to sandwich both flanges at both ends of the web of the steel frame material and apply a tensile force to both flanges in a direction opposite to the web side and in opposite directions. , a web stretching section that stretches the web in the direction of both the flanges, and the sleeve is formed by enlarging the slit by stretching the web through a final processing section after the web stretching section. An apparatus for manufacturing a steel frame material with a sleeve, characterized in that a steel frame material having a sleeve is manufactured.