JP2879173B2 - Method of manufacturing structure having expanded metal part - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for manufacturing a structure having an expanded metal part. That is, a method of manufacturing a structure having an expanded metal portion, which is formed into a corrugated shape by a large number of expanded and inclined bond portions and strand portions, has a large number of openings of a uniform shape, and has a large opening area and a substantially wire mesh shape. It is about. Such a structure is focused on the lightweight property of the expanded metal part, the anti-slip function, the air permeability, the decorative property of the pattern, and the like. For example, as a scaffold plate or other building material at a building site, as a general fence, It is being used for a wide range of applications, such as for holding and holding sound absorbing materials and other various structural materials.

[0002]

2. Description of the Related Art FIGS. 7 and 8 are schematic plan views and front explanatory views of a conventional structure, such as a scaffold, for explaining a conventional method of manufacturing a structure having an expanded metal portion. As shown in these drawings, the expanded metal part 1 is rarely used as a single unit in the related art, and in most cases, is used by being assembled to a frame part 2 having a predetermined cross-sectional shape for reinforcement, mounting, and the like. .
And such a structure 3 was manufactured by joining the separately prepared expanded metal part 1 and the frame part 2 by welding A etc., for example. In the drawing, reference numeral 4 denotes a cloth, which is joined by welding A or the like between them for further reinforcement. A plurality of cloths are arranged at predetermined intervals along the width direction of the expanded metal part 1. Have been.

[0003]

However, the following problem has been pointed out in the conventional method of manufacturing the structure 3 having the expanded metal portion 1. First,
Manufacturing was troublesome, and there were problems in terms of time, efficiency, and the like.
That is, since the expanded metal part 1 and the frame part 2 which are individually prepared are used in manufacturing, the number of unit members, that is, the number of parts becomes plural, and these are joined by welding A or the like. The processing, that is, the production was troublesome and time-consuming, and the efficiency was poor. Second, there was a problem in strength. That is, in the structure 3 manufactured in this manner, the expanded metal part 1 and the frame part 2 are joined by welding A or the like. there were.

The present invention has been made in view of the above circumstances, and has been made to solve the above-described problems of the conventional example. In this invention, a predetermined metal frame and a flat plate which are integrally formed are prepared.
After the slits are formed in the shape of a strip, by expanding the flat plate portion to form an expanded metal portion, firstly, manufacturing is facilitated, and secondly, the expanded metal portion, which is also excellent in strength, is formed. It is an object of the present invention to propose a method for manufacturing a structure having the same. Further, since the connection edge of the frame portion is inclined at substantially the same angle as the bond portion of the expanded metal portion, thirdly, in addition to the above, twisting of the bond portion near the connection edge is prevented,
Further, since the connection edge of the frame portion is formed in substantially the same wave shape as the expanded metal portion, fourthly, in addition to the above, the expanded metal portion near the connection edge can be prevented from being irregular in shape. Another object of the present invention is to propose a method of manufacturing a structure having a portion.

[0005]

The technical means of the present invention for achieving this object is as follows. First, claim 1 is as follows. That is, the manufacturing method of the structure having the expanded metal portion includes the following base material preparing step,
It has a slit forming step, a structure forming step, and the like.

In the base material preparing step, a frame portion having a predetermined length and formed in a predetermined cross-sectional shape, and a flat plate portion integrally formed with the frame portion and having substantially the same length and a constant width are provided. A metal substrate is prepared. In the slit forming step, a large number of slits are formed in the flat plate portion in a zigzag manner along the length direction of the frame portion.
Thereafter, in the structure forming step, the flat plate portion is expanded in a direction perpendicular to the length direction of the frame portion, so that the flat plate portion is corrugated by a number of inclined bond portions and strand portions. None, molded as an expanded metal part with multiple openings of uniform shape.

[0007] Claim 2 is as follows. That is, the manufacturing method of the structure having the expanded metal part is the same as that of the first aspect.
The frame portion prepared in the base material preparation step,
The connection edge portion with the flat plate portion is tilted at substantially the same angle as the tilt angle of the bond portion of the expanded metal portion expanded afterwards in the structure forming step. In the structure forming step, the connection edge of the frame portion and the bond portion of the expanded metal portion have substantially the same inclination angle.

[0008] Claim 3 is as follows. That is, in the method of manufacturing a structure having the expanded metal portion, in addition to the method described in claim 1 or claim 2, further, in the base material preparing step or the structure forming step, the connection edge of the frame portion is formed. Are formed in almost the same wave shape as the expanded metal part to be formed.

[0009]

The present invention comprises the above means and operates as follows. First, in the manufacturing method of the first aspect, a structure having an expanded metal portion is manufactured by following a base material preparing step, a slit forming step, and a structure forming step.

That is, a base material having a predetermined frame portion and a flat plate portion integrally formed of metal is prepared, and a large number of slits are formed in the length direction of the flat plate portion in a zigzag manner. The flat portion is formed as an expanded metal portion. Well there,
According to the manufacturing method of the structure having the expanded metal part, the following first and second cases are obtained.

First, the structure is formed simply by expanding after slit formation. That is, the frame portion, the flat plate portion, and the expanded metal portion are integrally formed as a single unit member and component, and joining by welding or the like is not required, so that manufacturing of the structure is simplified and facilitated. Secondly, the structure manufactured by this manufacturing method is also excellent in strength because it is similarly formed integrally and does not require joining such as welding.

Further, in addition to the above, in the manufacturing method of claim 2,
In the base material preparing step, the connection edge of the frame portion is inclined at substantially the same angle as the bond portion of the expanded metal portion, and thirdly, the bond portion of the expanded metal portion near the connection edge is not allowed. The generation of torsion is prevented without applying a large force.

[0013] In addition to the above, in the manufacturing method of claim 3,
In the base material preparation step or the structure forming step, the connection edge of the frame portion is formed in substantially the same wavy shape as the expanded metal portion. Further, fourthly, the expanded metal portion near the connection edge is also formed. It is expanded uniformly and its shape is prevented from being irregular.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings. First, a method of manufacturing the structure having the expanded metal portion will be described in the order of the base material preparing step, the slit forming step, and the structure forming step.

The base material preparation step is as follows. FIG.
FIG. 1 is a perspective explanatory view showing a frame portion 5, a flat plate portion 6, and the like in a base material preparing step and a slit forming step described later, which are used for describing an example of the present invention. As shown in FIG. 1, in the base material preparing step, a frame portion 5 having a predetermined length L and formed in a predetermined cross-sectional shape, and a frame portion integrally formed with the frame portion 5 are provided.
A flat plate portion 6 having substantially the same length L as the drum portion 5, for example, having the same length L and having a constant width W, and subsequently expanded;
Is prepared. Metals such as aluminum and steel are used as the material of the base material 7. For example, by extruding an aluminum material or bending a thin steel plate,
A base material 7 such as the frame portion 5 is prepared. Frame part 5
In the illustrated example, a total of two cross-sections are formed on both sides of the flat plate portion 6 and bent in a channel shape, but the position, number, shape, and the like of the frame portion 5 are not limited thereto. There are many other possibilities. For example, one plate may be formed on only one of the left and right sides or only the center of the flat plate portion 6, or may be formed in a substantially cylindrical shape, a substantially rectangular tube shape, or other various cross-sectional shapes. Is also good. The frame portion 5 functions not only for reinforcement, but also for attachment to a column or the like, or for connection between them by interposing a coupling means such as a bolt.

The slit forming step is as follows.
As shown in FIG. 1, in the slit forming step, a large number of slits 8 are formed in the flat plate 6 along the length L direction of the frame 5 in a zigzag manner. That is, the blade corresponding to the size of the opening in the expanded metal portion described later reciprocates up and down, for example, one after another with respect to the flat plate portion 6 of the base material 7 prepared in the above-described base material preparation step, thereby forming a fine cut-like shape. Many slits 8 are alternately formed along the length L direction.

The structure forming step is as follows. FIG. 2 is an explanatory front view showing a structure 9, for example, a frame portion 5, an expanded metal portion 10, and the like of a scaffold plate formed in a structure forming step of the embodiment. FIG. 3 is a perspective view showing an example of the main part. In the structure forming step, the flat plate portion 6 (see FIG. 1) is expanded in the width W direction perpendicular to the length L direction of the frame portion 5, so that the flat plate portion 6 is formed into a large number of inclined bond portions. 11 and the strand portion 12 (see FIGS. 5 and 6) are formed into an expanded metal portion 10 having a corrugated shape and having a large number of openings 13 having a uniform shape. That is, for the base material 7 prepared in the above-described base material preparation step and formed with the slits 8 in the slit forming step, for example, a tensile force is applied so as to separate the two frame parts 5 to the left and right in the width W direction. The portion 6, that is, each slit 8 thereof, is pulled in the width W direction, expanded, expanded, and expanded, so that the flat plate portion 6 becomes the expanded metal portion 10. FIG. 5 is a schematic plan view of the expanded metal part 10 formed as described above, and FIG. 6 is a perspective view of the main part. As shown in these drawings,
The expanded metal portion 10 has a corrugated shape formed by a large number of bond portions 11 and the strand portions 12 connected via the bond portions 11, which are developed and inclined from the plane in the state of the original flat plate portion 6 by the expansion. With these, the slits 8 are formed as an aggregate of a large number of openings 13 having a uniform shape spread in a substantially parallelogram shape or the like, and are not woven but have a substantially wire mesh shape. Thus, the structure 9 in which the expanded metal part 10 is integrally formed along the edge in the length L direction of the frame part 5 is manufactured.

As shown in FIGS. 1 and 2, the frame portion 5 prepared in the base material preparing step has a connecting edge portion 14 serving as a boundary surface with the flat plate portion 6 in the structure forming step. The inclination angle α of the bond portion 11 of the expanded metal portion 10 expanded after the fact is substantially the same, for example, the same angle α.
It is inclined to. Therefore, in the structure forming step, the connection edge portion 14 of the frame portion 5 and the expanded metal portion 10
And the bond portion 11 has a tilt angle α substantially equal to that of the bond portion 11.
In the illustrated example, the slit 8 formed in the slit forming step is formed symmetrically with respect to the center in the width W direction, and the bond portion 11 is symmetrically formed with the original flat plate with respect to the center. 6 (see FIG. 1), the connecting edges 14 of the left and right frame portions 5 are correspondingly symmetrically inclined at the same angle α from the plane in the state of FIG.
Become inclined.

Next, as shown in FIG. 3, in the base material preparing step or the structure forming step, the connecting edge portion 14 of the frame portion 5 is connected to the expanded metal portion 10 to be formed.
Are formed in a substantially same wave shape as the wave shape formed by the strand portion 12 of FIG. That is, in the base material preparation step, the connection edge portion 14 is narrowed down to a predetermined corrugated shape, or in the structure forming step, a tensile force is applied so as to separate the two frame portions 5 to the left and right in the width W direction. For example, by forming such a waveform on both chuck members sandwiching the connection edges 14 of both the frame portions 5 when expanding, the expansion of the flat plate portion 6 and the formation of the waveform on the connection edges 14 are prevented. You may make it perform simultaneously.

The present invention has been described above. Therefore, it becomes as follows. First, in this manufacturing method,
By following the base material preparation step, the slit forming step, and the structure forming step, the structure 9 having the expanded metal part 10 is manufactured.

That is, a base material 7 having a predetermined frame portion 5 and a flat plate portion 6 made of metal and integrally formed was prepared, and a large number of slits 8 were formed in a zigzag manner in the length L direction of the flat plate portion 6. Thereafter, the flat plate portion 6 is formed as an expanded metal portion 10 by expanding in the width W direction perpendicular to this. The structure 9 is manufactured in this way, and the frame 5 and the expanded metal 10 are integrally formed. Therefore, this expanded metal part 10
According to the manufacturing method of the structure 9 having
It becomes like.

First, the structure 9 is formed simply by expanding after the slit 8 is formed. In other words, in this manufacturing method, the frame portion 5, the flat plate portion 6, and the expanded metal portion 10 are integrally formed as one unit member / part, and are formed by welding A or the like as in this type of conventional manufacturing method. Since the joining (see FIG. 8) is unnecessary, the manufacture of the structure 9 is simplified and facilitated. Secondly, similarly, since the frame portion 5 and the expanded metal portion 10 are integrally formed, and joining such as welding A is not required as in the conventional manufacturing method of this type, the structure 9 manufactured by this manufacturing method is Excellent in strength.

Further, in addition to the above, as shown in FIG. 2 and the like in the base material preparation step, the connection edge portion 14 of the frame portion 5
In the case of being inclined at substantially the same angle α as the bond part 11 of the expanded metal part 10, the following is performed. That is, thirdly, since the two angles α coincide with each other as described above, the structure 9 manufactured by this manufacturing method has the expanded metal portion 1 near the connection edge portion 14 of the frame portion 5.
The undesired force is not applied to the bond portion 11 of the zero connection side portion 15 and the occurrence of twisting and bending is prevented. That is, FIG.
Is a front view of another example of the frame portion 5 and the expanded metal portion 10. In the example shown in FIG. 4, the connection edge 14 of the frame portion 5 is inclined differently from the example of FIG. However, it is formed substantially at right angles to the entire expanded metal part 10. In the case of the connection edge portion 14 as shown in FIG. 4, an excessive force is applied to the connection side portion 15 of the bond portion 11 of the expanded metal portion 10 near the connection edge portion 14, and torsion and bending occur. Anxiety arises in strength as compared to other parts. On the other hand, as shown in FIG. 2 and the like, such anxiety is solved by inclining the connection edge portion 14 of the frame portion 5 as described above, as described above.

Further, in addition to the above, in the base material preparation step or the structure forming step, as shown in FIG. 3, the connection edge portion 14 of the frame portion 5 is formed in substantially the same wave shape as the expanded metal portion 10. If you do the following: That is, fourthly, the structure 9 manufactured by this manufacturing method
In the first embodiment, the expanded metal portion 10 near the connection edge 14 of the frame portion 5 is also expanded uniformly, thereby preventing irregular shapes. That is, if such a corrugated shape is not formed on the connection edge portion 14 and the connection edge portion 14 has a flat plate shape, the length L of the frame portion 5 does not change during the expansion in the structure forming step. On the other hand, because the length of the expanded metal portion 10 is smaller than the length L of the flat plate portion 6, the expanded metal portion 10
Is not expanded sufficiently, the opening is insufficient, and the wavy shape and the opening 13 having a uniform shape are not formed. On the other hand, as shown in FIG. 3, by forming a predetermined wave shape on the connection edge portion 14 of the frame portion 5 as described above, such a concern is eliminated.

As in the illustrated embodiment described above,
In the case of the structure 9 in which the frame portions 5 are integrally formed on both sides of the expanded metal portion 10, a plurality of cloths are interposed at appropriate intervals for reinforcement in the width W direction between the frame portions 5 or the like. (See FIGS. 7 and 8).

[0026]

According to the method of manufacturing a structure having an expanded metal portion according to the first aspect of the present invention, as described above, a predetermined metal integrally formed frame portion and a flat plate portion are prepared. After the slits are formed, the flat plate portion is expanded to form the expanded metal portion, so that the following effects are exhibited.

First, the manufacturing is facilitated, and it is excellent in terms of time and effect. That is, according to this manufacturing method,
The structure is formed simply by expanding, and the unit member, that is, the number of components is one, and is integrally formed. No joining or assembling by welding or the like is required, and its manufacture is simplified and the time is shortened. Efficiency is improved. Second, it is also excellent in strength. That is, the structure manufactured by this manufacturing method is integrally formed with one unit member, that is, the number of parts is one, there is no joint such as welding, and the structure is strong, and there is no concern about strength.

In addition to the above, in the method for manufacturing a structure having an expanded metal part according to the second aspect, the connection edge of the frame part is inclined at substantially the same angle as the bond part of the expanded metal part. The following effects are further exhibited. That is, third, the structure manufactured by this manufacturing method is prevented from twisting in the bond portion of the expanded metal portion near the connection edge, and is excellent in strength from this aspect as well.

In addition to the above, in the method for manufacturing a structure having an expanded metal part according to claim 3, the connection edge of the frame part is formed in substantially the same wave shape as the expanded metal part. In addition, the following effects are exhibited. Fourth, in the structure manufactured by this manufacturing method, the expanded metal portion near the connection edge is also expanded uniformly, the wave shape and the irregular shape of the opening are prevented, and the strength surface and the like are also excellent from this surface. ing. As described above, the effects exhibited by the present invention are remarkable and large, for example, the problems existing in this type of conventional example are eliminated.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view illustrating an embodiment of a method of manufacturing a structure having an expanded metal portion according to the present invention, showing a frame portion, a flat plate portion, and the like in a base material preparing step and a slit forming step. .

FIG. 2 is a front explanatory view showing a frame portion, an expanded metal portion, and the like of a structure formed in a structure forming step for the description of the embodiment.

FIG. 3 is a perspective view showing an example of a main part of a frame portion and an expanded metal portion for the description of the embodiment.

FIG. 4 is an explanatory front view showing another side of the frame portion and the expanded metal portion for the description of the embodiment.

FIG. 5 is a schematic plan view of an expanded metal part for explaining the embodiment.

FIG. 6 is a perspective view of a main part of an expanded metal part for the description of the embodiment.

FIG. 7 is a schematic plan view of a manufactured structure for explaining a method of manufacturing a structure having a conventional expanded metal part.

FIG. 8 is an explanatory front view of a manufactured structure for explaining the manufacturing method of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Expanded metal part 2 Frame part 3 Structure 4 Cross 5 Frame part 6 Flat plate part 7 Base material 8 Slit 9 Structure 10 Expanded metal part 11 Bond part 12 Strand part 13 Opening 14 Connection edge part 15 Connection side part A welding L length W width α angle

Claims (3)

(57) [Claims] 1. A metal base having a frame portion having a predetermined length and formed in a predetermined cross-sectional shape, and a flat plate portion formed integrally with the frame portion and having substantially the same length and a constant width. A base material preparing step of preparing a material, a slit forming step of forming a large number of slits in a zigzag shape along the length direction of the frame portion with respect to the flat plate portion, By expanding in the direction perpendicular to the length direction, the flat plate portion is formed as an expanded metal portion having a large number of openings having a uniform shape in a wavy shape with a large number of inclined bond portions and strand portions, A method for manufacturing a structure having an expanded metal part, comprising: a structure forming step. 2. The frame portion prepared in the base material preparing step, wherein a connection edge portion with the flat plate portion has an inclination angle of a bond portion of the expanded metal portion which is post-expanded in the structure forming step. 2. The structure according to claim 1, wherein the connecting edge portion of the frame portion and the bonding portion of the expanded metal portion have substantially the same inclination angle in the structure forming step. Of manufacturing a structure having an expanded metal part. 3. The method according to claim 1, wherein, in the base material preparing step or the structure forming step, a connection edge of the frame portion is formed in substantially the same wave shape as the expanded metal portion to be formed. A method for producing a structure having an expanded metal part according to claim 1 or 2.