JP2835883B2 - 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. In other words, the present invention relates to a method for manufacturing a structure having a large number of openings having a large opening area and a substantially wire mesh shape, having a large number of openings having a large number of uniform waves and a large number of expanded and inclined wavy shapes. Such a structure is focused on the light weight, non-slip function, air permeability, and decorativeness of the pattern of the expanded metal part. For example, it is used as a scaffold or other building material at a building site, as a general fence, or as a sound absorbing material. It is being used in a wide variety of applications, such as for holding and holding materials, and as various other structural materials.

[0002]

2. Description of the Related Art FIGS. 7 and 8 are a schematic plan view and an explanatory front view of a conventional structure having such an expanded metal portion, for example, a scaffold plate. As shown in these drawings, the expanded metal part 1 is rarely used alone as a conventional one. In most cases, the expanded metal part 1 is used by assembling it with a reinforcing part 2 such as a frame part having a predetermined cross-sectional shape for reinforcement or mounting. Have been. And such a structure 3 was manufactured by joining the expanded metal part 1 and the reinforcement part 2 prepared individually, for example, by welding A or the like. In addition, 4 in the figure is a cloth, and the cloth 4 is joined by welding A or the like between them for further reinforcement.
A plurality of them are arranged at predetermined intervals along the width direction of the expanded metal part 1.

[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 separately prepared expanded metal part 1 and reinforcing part 2 are used, the number of unit members, that is, the number of parts becomes plural, and these are joined by welding A or the like. The production was cumbersome, time consuming and inefficient. Second,
There was also a problem in strength. In other words, since the structure 3 is formed by joining the expanded metal portion 1 and the reinforcing portion 2 by welding A or the like, there is inevitably a strength problem in the joining portion of the welding A or the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has been made to solve the above-mentioned problems of the prior art. A slit is formed in a part of a metal flat plate in a zigzag shape and then expanded. By forming the expanded metal portion and forming a predetermined reinforcing portion on at least a part of the remaining portion, the expanded metal portion, which is firstly easy to manufacture and secondly excellent in strength, is formed. It is an object of the present invention to propose a method for manufacturing a structure having the same.

[0005]

The technical means of the present invention for achieving this object is as follows. That is, the method for manufacturing the structure having the expanded metal portion includes the following flat plate preparing step, slit forming step, expanded metal part forming step, reinforcing part forming step, and the like.

[0006] In the flat plate preparation step, a metal flat plate having a predetermined length and width is prepared. In the slit forming step, a large number of slits are formed in a predetermined area of the flat plate in either a vertical or horizontal direction. In the expanded metal portion forming step, an expanded metal portion is formed in the predetermined area of the flat plate by expanding the flat plate in a direction perpendicular to the slit direction, and the expanded metal portion has a large number of inclined wave shapes. None A large number of openings of uniform shape are provided. In the reinforcing portion forming step, a reinforcing portion having a predetermined cross-sectional shape is formed along the slit direction on at least a part of the remaining area where the expanded metal portion is not formed in the flat plate.

[0007]

The present invention comprises the above means and operates as follows. In this manufacturing method, a structure having an expanded metal part is manufactured by following a flat plate preparing step, a slit forming step, an expanded metal part forming step, and a reinforcing part forming step. That is, after forming a large number of slits in a predetermined area in a predetermined area of the prepared metal flat plate, the expanded metal portion is formed by expanding in a direction perpendicular to the slit, and at least a part of the remaining area of the flat plate is formed. The structure is manufactured by forming a predetermined reinforcing portion on the substrate. Then, the following first and second cases are obtained.

First, the structure is formed by forming a slit, expanding, and forming a reinforcing portion. In other words, the expanded metal part, reinforcement part, etc.
Since it is integrally formed as a part and does not require joining by welding or the like, the manufacture of the structure is simplified and facilitated. Second, the structure is also excellent in strength because it is similarly formed integrally and does not require joining such as welding.

[0009]

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 a structure having an expanded metal part will be described in the order of a flat plate preparation step, a slit forming step, an expanded metal part forming step, and a reinforcing part forming step.

The flat plate preparation step is as follows. FIG.
FIG. 3 is a perspective view showing a flat plate 5, a slit 6 and the like in a flat plate preparing step and a slit forming step for explaining an embodiment of the present invention. As shown in FIG. 1, in this flat plate preparation step, a metal flat plate 5 having a predetermined length L and a width W is prepared. The flat plate 5 is expanded later as described later, and a metal such as aluminum or steel is used as a material thereof.

The slit forming step is as follows.
As shown in FIG. 1, in the slit forming step, a large number of slits 6 are formed in a predetermined shape on a part of the flat plate 5 in a vertical or horizontal W direction. That is, the blade corresponding to the size of the opening in the expanded metal portion described later reciprocates vertically, for example, one after another with respect to the flat plate 5 prepared in the above-described flat plate preparation step, so that the fine slit-shaped slit 6 is formed, for example, vertically. A large number are alternately formed at the center of the flat plate 5 along the L direction. In the illustrated example, the formation area of the slit 6 is formed at one position in the vertical L direction and at the center, but may be formed in the horizontal W direction, for example, or may be formed in the side part or the like. Alternatively, it may be formed at a plurality of locations with an interval instead of at one location.

The expanded metal part forming step is as follows. FIG. 2 shows the expanded metal portions 7 and 7 in the expanded metal portion forming step and the reinforcing portion forming step.
It is a perspective view which shows the reinforcement part 8 grade. FIG. 3 is an explanatory front view showing the expanded metal portion 7, the reinforcing portion 8, and the like. In the expanded metal part forming step, the flat plate 5 (see FIG. 1)
By expanding the entirety in a direction perpendicular to the direction of the slit 6, an expanded metal part 7 is formed in a part of the predetermined area of the flat plate 5. The expanded metal part 7 has a large number of inclined wavy shapes and a large number of openings 9 having a uniform shape. That is, the whole of the flat plate 5 prepared in the above-described flat plate preparing step and having the slit 6 formed in the slit forming step is in a direction perpendicular to the direction of the slit 6.
In the expanding direction, that is, in the illustrated example, in the lateral W direction, by applying a force to the left and right to apply a pulling force so as to separate them,
Each slit 6 of the flat plate 5 is pulled in the lateral W direction, expanded, expanded, and expanded, so that the area becomes the expanded metal portion 7. That is, the expanded metal part 7
The slit 6 is formed in the predetermined area where the slit 6 is formed in the above-described slit forming step.
One portion is formed at the center along the direction.

FIG. 6 is a perspective view of a main part of the expanded metal portion 7 formed as described above. Referring to FIG. 6, the expanded metal portion 7 is in the state of the original flat plate 5 due to the expansion. A wave shape is formed by a large number of bond portions 10 which are developed and inclined from the plane in and connected to each of the strand portions 11 via the bond portions 10. By these means, each slit 6 is formed as an aggregate of a large number of openings 13 of a uniform shape spread in a substantially parallelogram shape or the like, and is not woven but has a substantially wire mesh shape.

The reinforcing portion forming step is as follows. As shown in FIG. 2, in the flat plate 5 (see FIG. 1), at least a part of the slit 6, that is, the remaining area where the expanded metal part 7 is not formed, is provided with a reinforcing part 8 having a predetermined sectional shape along the direction of the slit 6. It is formed. That is, in the illustrated example, the remaining area where the slit is not formed in the above-described slit forming step and the remaining area where the expanded metal part 7 is not formed in the above-described expanded metal part forming step, that is, the central part of the flat plate 5 is excluded. Reinforcing portions 8 such as frame portions having a predetermined cross-sectional shape on both left and right sides
Is formed by bending or the like in the direction of the slit 6, that is, in the illustrated example, in the longitudinal L direction. In the illustrated example, the reinforcing portion 8 has a cross-sectional shape formed by bending a total of two channels on both sides of the expanded metal portion 7.
The position, number, shape, and the like of the reinforcing portions 8 are not limited to these, and various other types are possible. For example, one piece may be formed at only one of the right and left sides or only at the center. A cylinder, a substantially rectangular cylinder, or other various cross-sectional shapes may be used. Further, the reinforcing portion 8 is not formed on the entire remaining area where the expanded metal portion 7 is not formed as in the illustrated example.
At least one may be formed only in a part thereof. That is, the reinforcing portion 8 may be formed only in a part of the remaining area where the expanded metal portion 7 is not formed, regardless of the illustrated example, and the other area may be left as the flat plate 5. The reinforcing portion 8 functions not only for reinforcing, but also for attaching to a column or the like, or for connecting with each other by interposing a coupling means such as a bolt.

In this way, a structure 12 such as a scaffold plate, which is made of metal and is integrally formed with the expanded metal portion 7, the reinforcing portion 8, and the like, is manufactured. The present invention is as described above. Therefore, it becomes as follows.

In this manufacturing method, the structure 12 having the expanded metal part 7 is manufactured by following a flat plate preparation step, a slit forming step, an expanded metal part forming step, and a reinforcing part forming step. That is, in the illustrated example, the vertical L
After a large number of slits 6 are formed in a zigzag manner in the direction, the expanded metal portion 7 is formed by expanding the slits 6 in a direction perpendicular to the slits 6 in the horizontal W direction in the illustrated example. At the same time, a predetermined reinforcing portion 8 is formed on at least a part of the remaining area of the flat plate 5 and on both the right and left sides in the illustrated example, whereby the structure 12 is manufactured. Then, the following first and second cases are obtained.

First, the structure 12 is formed by forming the slit 6, expanding, and forming the reinforcing portion 8. That is, the expanded metal portion 7 and the reinforcing portion 8 such as the frame portion are integrally formed as a single unit member / part, so that joining by welding A or the like (see FIG. 8) is not required as in this type of conventional example. In addition, the manufacture of the structure 12 is simplified and facilitated. Secondly, similarly, the expanded metal portion 7, the reinforcing portion 8 such as the frame portion and the like are integrally formed, and the joining such as welding A is not required unlike the conventional example of this kind. I have.

The present invention is as described above. Next, modifications thereof will be described below. First, the inclination of the connection edge 13 will be described. As shown in FIGS. 2 and 3, the reinforcing portion 8 is configured such that the connection edge 13, which is a boundary surface with the expanded metal portion 7, has substantially the same angle as the inclination angle α of the bond portion 10 of the expanded metal portion 7, for example, the same angle. It is inclined to α. In the illustrated example, the slits 6 formed in the slit forming step are formed symmetrically with respect to a center portion in the horizontal W direction, and the bond portion 10 is symmetrically formed with the original flat plate 5 with respect to the center portion. The connecting edges 13 of the left and right reinforcing portions 8 are also inclined symmetrically by the same angle α from the plane in the state shown in FIG. As described above, since the two angles α coincide with each other, in this structure 12, the unreasonable force is not applied to the bond portion 10 of the connection side portion 14 of the expanded metal portion 7 near the connection edge 13 of the reinforcing portion 8. The occurrence of torsion and bending is prevented. That is, FIG. 5 is a front explanatory view showing another example of the expanded metal portion 7, the reinforcing portion 8, and the like. In the example shown in FIG. 5, the connection edge 13 of the reinforcing portion 8 is different from the example of FIG. Are not inclined and are formed substantially at right angles to the entire expanded metal portion 7. In the case of the connection edge portion 13 as shown in FIG. 5, the connection side portion 1 of the bond portion 10 of the expanded metal portion 7 near the connection edge portion 13 is formed.
About 4, an excessive force is applied to cause twisting and bending,
Anxiety arises in strength as compared to other parts. In contrast, FIG.
As described above, the connection edge 1 of the reinforcing portion 8 is
Such anxiety is resolved by inclining 3 as predetermined.

Second, the formation of a waveform on the connection edge 13 will be described. FIG. 4 is a perspective view showing a main part of a modified example of the reinforcing portion 8 and the like. In the example shown in the figure, the connection edge 13 of the reinforcing portion 8 to the expanded metal portion 7 is formed into a substantially same wave shape as that formed by the strand portion 11 of the expanded metal portion 7 by narrowing or the like. Is formed. Since the corrugations are formed in this manner, the connection edge 1
The irregular shape of the expanded metal portion 7 near 3 is prevented. That is, if such a corrugated shape is not formed on the connection edge 13, that is, if the portion corresponding to the connection edge 13 is formed in a flat plate shape from the beginning, the following is performed. That is, in this case, the length L of the flat plate 5 is unchanged during expansion in the expanded metal portion forming step, whereas the corresponding length of the expanded metal portion 7 is reduced as compared with the length L of the flat plate 5. Due to the above, the connection side 14 side of the expanded metal part 7 is not expanded sufficiently,
The opening is insufficient, and the wavy shape and the opening 9 having a uniform shape are not formed. On the other hand, as shown in FIG.
As described above, such a concern is eliminated by forming a predetermined corrugation at a position corresponding to the connection edge 13 of the reinforcing portion 8. The connecting edge 13 of the reinforcing portion 8
In order to form a predetermined corrugation, the corrugation may be formed in advance before expansion, or when reinforcing portions 8 are formed on both sides of the expanded metal portion 7 as shown in the illustrated embodiment, for example, both ends to be used during expansion may be used. By forming such a waveform on the chuck member that holds the connection edge 13, the expansion and the waveform formation on the connection edge 13 may be performed simultaneously.

Third, as in the illustrated embodiment described above, in the case of the structure 12 in which the reinforcing portion 8 such as a frame portion is integrally formed on both sides of the expanded metal portion 7, the structure is appropriately provided for reinforcement. It is also conceivable to interpose a plurality of cloths at intervals, for example, in the lateral W direction between the reinforcing portions 8 (FIG. 7, FIG.
See FIG. 8).

[0021]

As described above, according to the method for manufacturing a structure having an expanded metal part according to the present invention, a slit is formed in a part of a flat metal plate, and then the expanded metal part is expanded. The following effects are exhibited by forming the predetermined reinforcing portion on at least a part of the remaining portion.

First, it is easy to manufacture, and is excellent in terms of time and efficiency. That is, this structure is formed by forming a slit, expanding, and forming a reinforcing portion, and is integrally formed with a single unit member, that is, one component. Therefore, joining by welding or the like, that is, assembling processing is unnecessary, and its manufacture is simple. Easier, shorter time and higher efficiency. Second, it is also excellent in strength. That is, this structure 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.

As described above, the effects exhibited by the present invention are remarkably large, for example, the problems existing in this kind of prior art are eliminated.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing an expanded metal portion, a reinforcing portion, and the like in the expanded metal portion forming step and the reinforcing portion forming step.

FIG. 3 is an explanatory front view showing the expanded metal portion, a reinforcing portion, and the like.

FIG. 4 is a perspective view showing a main part of a modified example of the reinforcing portion and the like.

FIG. 5 is an explanatory front view showing another example of the expanded metal portion, the reinforcing portion, and the like.

FIG. 6 is a perspective view of a main part of an expanded metal part.

FIG. 7 is a schematic plan view showing a conventional structure having an expanded metal part.

FIG. 8 is an explanatory front view of the structure.

[Explanation of symbols]

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

Claims (1)

(57) [Claims] 1. A flat plate preparation step of preparing a metal flat plate having predetermined lengths and widths, and forming a large number of slits in a certain predetermined area of the flat plate in either a vertical or horizontal direction. And forming the expanded metal portion in the predetermined area of the flat plate by expanding the flat plate in a direction perpendicular to the slit direction. An expanded metal part forming step comprising a number of openings of a uniform shape, and a reinforcing part having a predetermined cross-sectional shape along the slit direction with respect to at least a part of the remaining area where the expanded metal part is not formed in the flat plate. Forming a reinforcing portion, and a reinforcing portion forming step.