JPH04238637A - Production of structural body having expanded metal part and structural body having expanded metal part - Google Patents

Abstract

PURPOSE:Firstly to eliminate the need for welding, etc., and to facilitate production as this structural body can be molded simply by forming slits and expanding, secondly to obtain the structural body which is excellent in terms of strength as this body is integrally molded, thirdly to prevent the generation of twists in the expanded metal part near connecting edges, and fourthly to obtain the structural body which is prevented of the nonuniformity in shape. CONSTITUTION:A base material 7 having integrally molded frame parts 5 made of a metal and a flat plate part 6 is prepd. After the many slits 8 are formed zigzag in the longitudinal L direction of the flat plate part 6, the base material is expanded in the direction perpendicular thereof, by which the flat plat part 6 is formed as the expanded metal part. Further, the connecting edges 14 of the flame parts 5 are properly previously inclined at approximately the same angle as the angle of the bond parts of the expanded metal part or are formed to nearly the same waveform shape as the waveform shape of the expanded metal part.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a structure having an expanded metal part, and a structure having an expanded metal part. In other words, a structure having a large number of openings with a wave shape and a uniform shape formed by a large number of expanded and inclined bond parts and strand parts, and an expanded metal part with a large opening area and a substantially wire mesh shape;
and its manufacturing method. Such structures are attracting attention because of the lightness of the expanded metal part, anti-slip function, breathability, decorativeness of patterns, etc., and are used, for example, as scaffolding boards and other construction materials at construction sites, as general fences, and as sound absorbers. It is being used for a wide range of purposes, including for holding and holding materials, and as a variety of other structural materials.

0002

2. Description of the Related Art FIGS. 7 and 8 are a schematic plan view and a front view of a conventional structure having expanded metal parts of this type, such as a scaffold board. As shown in these drawings, the expanded metal part 1 has rarely been used alone, and in most cases, it is assembled into a frame part 2 having a predetermined cross-sectional shape for reinforcement, mounting, etc. Such a structure 3 was manufactured by joining the expanded metal part 1 and the frame part 2, which were prepared separately, by, for example, welding A or the like. In addition, 4 in the figure is a cross, and this cross 4 is joined by welding A etc. between these for further reinforcement, and a plurality of crosses are arranged along the width direction of the expanded metal part 1 at a predetermined interval. has been done.

0003

However, the following problems have been pointed out in the conventional structure 3 having the expanded metal portion 1 and the manufacturing method thereof. First, it is troublesome to manufacture, and there are problems in terms of time, efficiency, etc. That is, since the expanded metal part 1 and the frame part 2, which are each prepared separately, are used, there are a plurality of unit members, that is, a plurality of parts, and these are joined by welding A, etc., so this structure 3 can be assembled easily. Its production was troublesome, time consuming, and inefficient. Secondly, there was also a problem in terms of strength. That is, since this structure 3 is formed by joining the expanded metal part 1 and the frame part 2 by welding A or the like, there is inevitably concern about the strength of the joints such as welding A.

[0004] The present invention has been made in view of the above-mentioned circumstances to solve the problems of the conventional example.
After forming slits in a chiselled shape, the flat plate part is expanded to form an expanded metal part.
It is an object of the present invention to propose a method for manufacturing a structure having an expanded metal part and a structure having an expanded metal part that is easy to manufacture and secondly has excellent strength. Furthermore, since the connection edge of the frame part is inclined at approximately the same angle as the bond part of the expanded metal part, thirdly, in addition to the above, twisting of the bond part near the connection edge is prevented, and the frame part Fourthly, in addition to the above, the connection edge of the structure is formed in substantially the same wave shape as the expanded metal part, thereby preventing irregular shapes of the expanded metal part near the connection edge. The purpose is also to propose manufacturing methods.

[0005]

[Means for Solving the Problems] The technical means of the present invention to achieve this object are as follows. First, claim 1 is as follows. That is, this method of manufacturing a structure having an expanded metal part includes the following steps of preparing a base material, forming a slit, forming a structure, and the like.

[0006] In the base material preparation step, the base material has a frame portion having a predetermined length and a predetermined cross-sectional shape, and a flat plate portion integrally formed with the frame portion and having approximately the same length and a constant width. A metal base material is prepared. In the slit forming step, a large number of slits are formed in the flat plate portion in a staggered manner along the length direction of the frame portion. After that, in the structure forming process, the flat plate part is expanded in a direction perpendicular to the length direction of the frame part, so that the flat plate part has a uniform wave shape with a large number of inclined bond parts and strand parts. Molded as an expanded metal part with a number of shaped openings.

Claim 2 is as follows. That is, in addition to the above-described aspects of claim 1, the method for manufacturing a structure having an expanded metal part further provides that the frame part prepared in the base material preparation step has a connecting edge with the flat plate part. The inclination angle is approximately the same as the inclination angle of the bond part of the expanded metal part which is expanded after the process of forming the structure. 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.

Claim 3 is as follows. That is, in addition to the above-described aspects of claim 1 or 2, the method for manufacturing a structure having an expanded metal part further includes the step of forming a connecting edge of the frame part in the base material preparation step or the structure molding step. , it is formed into a wave shape that is almost the same as the expanded metal part to be molded.

Claim 4 is as follows. That is, the structure having the expanded metal portion is made of metal, and the expanded metal portion is integrally molded along the longitudinal edge of a frame portion having a predetermined length and a predetermined cross-sectional shape.

0010

[Operation] Since the present invention is comprised of such means, it operates as follows. First, in the manufacturing method of claim 1, a structure having an expanded metal part is manufactured by following the steps of preparing a base material, forming a slit, and forming a structure. That is, a base material having a predetermined frame part and a flat plate part integrally formed of metal is prepared, a large number of slits are formed in the lengthwise direction of the flat plate part, and then the slits are expanded in a direction perpendicular to the slits. As a result, the flat plate part is formed as an expanded metal part. The structure according to claim 4 is manufactured in this manner, and the frame portion and the expanded metal portion are integrally molded. Therefore, the first and second steps are as follows.

First, this structure can be formed by simply expanding after forming the slit. In other words, the frame portion, flat plate portion, and expanded metal portion are integrally molded as one unit member/component, and there is no need for joining by welding or the like, so manufacturing of the structure is simplified. Secondly, it is also integrally molded and does not require welding or other joining.
This structure also has excellent strength.

In addition to the above, in the manufacturing method of claim 2, the connecting edge of the frame portion is inclined at substantially the same angle as the bonding portion of the expanded metal portion in the base material preparation step, so that, thirdly, Unreasonable force is not applied to the bond portion of the expanded metal portion near the connection edge, and twisting is prevented from occurring.

In addition to the above, in the manufacturing method according to claim 3, in the base material preparation step or the structure forming step, the connecting edge of the frame portion is formed into a wave shape substantially the same as that of the expanded metal portion. Furthermore, fourthly, the expanded metal portion near the connection edge is also expanded uniformly, thereby preventing irregularities in shape.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below based on embodiments shown in the drawings. First, a method for manufacturing a structure having an expanded metal portion will be explained in the order of a base material preparation step, a slit formation step, and a structure molding step.

The base material preparation process is as follows. Figure 1
FIG. 2 is a perspective explanatory view showing a frame portion 5, a flat plate portion 6, etc. in a base material preparation step and a slit forming step to be described later, for explaining an embodiment of the present invention. As shown in FIG. 1, in the base material preparation step, a frame portion 5 having a predetermined length L and a predetermined cross-sectional shape, and a frame portion 5 integrally molded with the frame portion 5 are prepared.
a flat plate part 6 having substantially the same length L, for example, exactly the same as the arm part 5, and a constant width W, which is expanded after the fact;
A metal base material 7 is prepared. Metals such as aluminum and steel are used as the material for the base material 7. For example, by extruding aluminum material or bending a thin steel plate,
A base material 7 such as a frame portion 5 is prepared. In the illustrated example, the frame portion 5 has a cross-sectional shape in which a total of two channels are bent on both sides of the flat plate portion 6, but the position, number, shape, etc. of the frame portion 5 are limited to this. For example, one piece may be formed only on either the left or right side of the flat plate part 6, or only in the center, or it may have a substantially cylindrical shape, a substantially rectangular cylindrical shape, or other various shapes. It is also possible to use one having a cross-sectional shape of . This frame portion 5 is used not only for reinforcement, but also for attachment to pillars, etc.
In addition, by interposing coupling means such as bolts, they function as mutual connections, etc.

The slit forming process 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 part 6 in a staggered manner along the length L direction of the frame part 5. In other words, a blade corresponding to the size of the opening in the expanded metal part, which will be described later, is reciprocated up and down one after another on the flat plate part 6 of the base material 7 prepared in the base material preparation step described above, thereby forming fine cuts in the form of fine cuts. A large number of slits 8 are formed alternately along the length L direction.

The structure forming process is as follows. FIG. 2 is an explanatory front view showing the structure 9 molded in the structure molding process of the same example, such as the frame portion 5 of the scaffolding board, the expanded metal portion 10, and the like. FIG. 3 is a perspective view showing an example of the main part. In the structure forming process, by expanding the flat plate part 6 (see FIG. 1) in the width W direction perpendicular to the length L direction of the frame part 5, the flat plate part 6 is formed into a large number of inclined bond parts 11. and strand part 1
2 (see FIGS. 5 and 6), it is formed into an expanded metal part 10 having a wave shape and having a large number of uniformly shaped openings 13. That is, the base material 7 prepared in the above-mentioned base material preparation step and in which the slits 8 were formed in the slit forming step is made into a flat plate by applying a tensile force, for example, so as to separate both frame portions 5 from side to side in the width W direction. The portion 6, that is, each of its slits 8, is pulled in the width W direction, expanded and expanded, and the flat plate portion 6 becomes an expanded metal portion 10. FIG. 5 is a schematic plan view of the expanded metal part 10 formed in this manner, and FIG. 6 is a perspective view of the essential parts. As shown in these drawings, the expanded metal part 10 is expanded to form the original flat plate part 6.
A wavy shape is formed by a large number of bond parts 11 which are developed and tilted from the plane in the state, and a strand part 12 connected through the bond parts 11. As a result, the slit 8 is formed as an assembly of a large number of uniformly shaped openings 13 expanded into a substantially parallelogram shape, and has a substantially wire mesh shape although it is not woven. In this way, the structure 9 in which the expanded metal part 10 is integrally molded along the edge of the frame part 5 in the length L direction is manufactured.

As shown in FIGS. 1 and 2, in the frame portion 5 prepared in the base material preparation step, the connecting edge 14, which is the interface with the flat plate portion 6, is The inclination angle α of the bond portion 11 of the expanded metal portion 10 is substantially the same, for example, the same angle α. Therefore, in the structure forming process, the connection edge 14 of the frame portion 5 and the bond portion 11 of the expanded metal portion 10 have substantially the same inclination angle α. In the illustrated example, the slits 8 formed in the slit forming step are formed symmetrically with respect to the central portion in the width W direction, and the bond portions 11 are symmetrically formed with the original flat plate portion 6 with respect to the central portion as a boundary. They are each inclined at the same angle α from the plane in the state shown in FIG.

Next, as shown in FIG. 3, in the base material preparation step or structure molding step, the connecting edge 14 of the frame portion 5 is formed by the strand portion 12 of the expanded metal portion 10 to be molded. The wave shape is approximately the same as the wave shape. That is, in the base material preparation process, the connecting edge 14 is narrowed into a predetermined wave shape, or in the structure forming process, a tensile force is applied to separate both frame parts 5 from side to side in the width W direction, and the flat plate part 6 is When expanding, for example, by forming such a waveform on both chuck members that clamp the connection edge 14 of both frame parts 5, the expansion of the flat plate part 6 and the formation of a waveform on the connection edge 14 can be prevented. They may be performed at the same time.

The present invention has been described above. Therefore, it becomes as follows.

First, in this manufacturing method, the structure 9 having the expanded metal portion 10 is manufactured through a base material preparation step, a slit forming step, and a structure molding step. That is, a base material 7 having a predetermined frame part 5 and a flat plate part 6 integrally formed of metal is prepared, and a large number of slits 8 are formed in a staggered manner in the length L direction of the flat plate part 6. By expanding in the width W direction perpendicular to the flat plate part 6
is formed as an expanded metal part 10. The structure 9 is manufactured in this manner, and the frame portion 5 and the expanded metal portion 10 are integrally molded. So the next step is
, like the second one.

First, the structure 9 can be formed by simply expanding the slit 8 after forming it. In other words, the frame portion 5, flat plate portion 6, and expanded metal portion 10 are integrally molded as one unit member/component.
Joining by welding A, etc. as in the conventional example of this type (see Fig. 8)
Since this is not necessary, manufacturing of the structure 9 is simplified. Second, similarly, the frame part 5 and the expanded metal part 10
This structure 9 also has excellent strength because it is integrally molded and does not require joining such as welding A as in conventional examples of this type.

In addition to the above, in the base material preparation process, FIG.
When the connection edge 14 of the frame part 5 is inclined at substantially the same angle α as the bond part 11 of the expanded metal part 10, as shown in FIG. In other words, thirdly, since both angles α match in this way, this structure 9 has a bond portion 11 of the connection side portion 15 of the expanded metal portion 10 near the connection edge 14 of the frame portion 5.
This prevents twisting and bending from occurring without applying excessive force. In other words, FIG. 4 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 different from the example shown in FIG. Non-slanted expanded metal part 10
It is formed approximately at right angles to the whole. In the case of the connection edge 14 as shown in FIG. 4, the connection side 15 of the bond part 11 of the expanded metal part 10 near the connection edge
Unreasonable force is applied to the parts, causing them to twist and bend, causing concerns about their strength compared to other parts. On the other hand, as shown in FIG. 2, etc., such concerns can be eliminated by making the connection edge 14 of the frame portion 5 slope in a predetermined manner as described above.

Furthermore, in addition to the above, in the case where the connecting edge 14 of the frame portion 5 is formed into substantially the same wave shape as the expanded metal portion 10 as shown in FIG. 3 in the base material preparation step or the structure molding step. becomes as follows. In other words, fourthly, this structure 9 has a connecting edge 1 of the frame part 5.
The expanded metal portion 10 near 4 is also expanded uniformly, and irregularities in shape are prevented. In other words, if such a wave shape is not formed on the connecting edge 14 and the connecting edge 14 has a flat plate shape, the length L of the frame portion 5 will remain unchanged during expansion in the structure forming process. However, due to the length of the expanded metal part 10 being shortened compared to the length L of the flat plate part 6, the connecting side part 15 side of the expanded metal part 10 is not sufficiently expanded, resulting in insufficient opening and other problems. A uniform wave shape and an opening 13 are not formed. In contrast, Figure 3
As shown in FIG. 2, such concerns can be eliminated by forming a predetermined wave shape on the connecting edge 14 of the frame portion 5 as described above.

Furthermore, in the case of the structure 9 in which the frame parts 5 are integrally molded on both sides of the expanded metal part 10 as in the illustrated embodiment described above, a plurality of crosses are installed at appropriate intervals for reinforcement. It is also conceivable to interpose it in the width W direction between the frame parts 5 (see FIGS. 7 and 8).

[0026]

Effects of the Invention As explained above, the method for manufacturing a structure having an expanded metal part according to claim 1 of the present invention includes preparing a predetermined integrally formed metal frame part and a flat plate part, After forming a slit, the flat plate part is expanded to form an expanded metal part, and the structure having an expanded metal part according to claim 4 is manufactured in this way, and the frame part and the expanded metal part are integrally molded. By doing so, the following effects are achieved.

First, it is easy to manufacture and is excellent in terms of time and efficiency. In other words, this structure can be formed by simply expanding it, and is integrally molded with only one unit member, that is, one part, and there is no need for joining or assembly by welding, etc., simplifying the manufacturing process and shortening the time. efficiency is improved. Second, it has excellent strength. That is, this structure is made of one unit member, that is, one part, and is integrally molded, and there are no joints such as welding, so it is strong, and there is no concern about its strength.

In addition to the above, in the method for manufacturing a structure having an expanded metal portion according to claim 2, the connection edge of the frame portion is inclined at substantially the same angle as the bond portion of the expanded metal portion, so that Demonstrates the following effects. Thirdly, this structure prevents the occurrence of twisting in the bond portion of the expanded metal portion near the connection edge, and is excellent in strength from this point of view as well.

In addition to the above, in the method for manufacturing a structure having an expanded metal portion according to claim 3, the connection edge of the frame portion is formed in substantially the same wave shape as the expanded metal portion, so that in addition to the above, Demonstrates the following effects. That is, fourthly, in this structure, the expanded metal portion near the connection edge is also expanded uniformly, preventing undulations and uneven shapes of the openings, and from this point of view as well, the structure is excellent in terms of strength and the like.

[0030] As described above, the effects of the present invention are remarkable, such as eliminating the problems that existed in this type of conventional example.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory view showing a frame portion, a flat plate portion, etc. in a base material preparation step and a slit forming step, for explaining an embodiment of a structure having an expanded metal portion and a manufacturing method thereof according to the present invention; be.

FIG. 2 is an explanatory front view showing the frame portion, expanded metal portion, etc. of the structure molded in the same structure molding process.

FIG. 3 is a perspective view showing an example of essential parts of the frame portion and expanded metal portion.

FIG. 4 is an explanatory front view showing the other side of the frame portion and expanded metal portion.

FIG. 5 is a schematic plan view of the expanded metal part.

FIG. 6 is a perspective view of essential parts of the 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 same structure.

[Explanation 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 15 Connection side part A Welding L Length W Width α Angle

Claims (4)

[Claims] 1. A metal base having a frame portion having a predetermined length and a predetermined cross-sectional shape, and a flat plate portion integrally molded with the frame portion and having approximately the same length and a constant width. a base material preparation step of preparing a material, a slit forming step of forming a large number of slits in the flat plate part in a staggered manner along the length direction of the frame part, and then a step of forming the flat plate part into the frame part. By expanding in a direction perpendicular to the length direction, the flat plate part is formed into an expanded metal part having a wavy shape with a large number of inclined bond parts and a strand part and having a large number of uniformly shaped openings. 1. A method for manufacturing a structure having an expanded metal part, comprising the steps of: forming a structure; 2. The frame portion prepared in the base material preparation step has a connecting edge with the flat plate portion that has an inclination angle of the bond portion of the expanded metal portion expanded afterward in the structure forming step. , are inclined at substantially the same angle, and in the structure forming step, the connecting edge of the frame portion and the bonding portion of the expanded metal portion have substantially the same inclination angle. A method of manufacturing a structure having an expanded metal part. 3. A claim characterized in that, in the base material preparation step or the structure molding step, the connecting edge of the frame portion is formed into a wave shape that is substantially the same as the expanded metal portion to be molded. A method for manufacturing a structure having an expanded metal portion according to claim 1 or claim 2. 4. A structure having an expanded metal portion, characterized in that the expanded metal portion is integrally molded along a longitudinal edge of a frame portion having a predetermined length and a predetermined cross-sectional shape. .