JP2015045174A - Wire net - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for making a welding wire net of a JIS G 3551 equivalent device in a further lightweight way.SOLUTION: The wire net is made by using a twisted polygonal cross-sectional metal wire material instead of a round cross-sectional metal wire material. The length between opposed angles of the polygonal cross-sectional metal wire material is almost equal to a cross-sectional diameter of the substituting round cross-sectional metal wire material. A twist is also added to the polygonal cross-sectional metal wire material to endure even against stress from multi-directions. Thus, weight reduction in the welding wire net becomes possible in response to the ratio of the cross-sectional area of the round cross-sectional metal wire material and the cross-sectional area of the polygonal cross-sectional metal wire material.

Description

  The present invention relates to a wire mesh, particularly a welded wire mesh structure that is lightweight and has the same strength as the conventional one.

  “Welding wire mesh” refers to a wire mesh in which iron wires are arranged orthogonally and their intersections are electrically resistance welded to form a lattice shape. These welded wire meshes are often used as construction sites and bird and animal damage prevention fences, and are often handled at Sunday goods stores.

  A conventional welded wire mesh shown in JIS G 3551 (Non-Patent Document 1) or the like has been created by combining “round iron wires” in a cross-beam shape.

  FIG. 1 is a diagram showing a round iron wire used when creating a conventional welded wire mesh. 2 is a front view of a conventional welded wire mesh, and FIG. 3 is a perspective view of the conventional welded wire mesh shown in FIG.

  “Round iron wire” means an iron wire having a circular cross-sectional shape (definition defined in Non-Patent Document 1). In the present specification, when describing the configuration of the present invention and the configuration of the conventional product, the “round iron wire” is referred to as a round cross-section metal wire 100.

  In the conventional welded wire mesh, the round cross-section metal wire 100 is used for the vertical lines 101a, 101b, 101c, 101d and the horizontal lines 102a, 102b, 102c, 102d. This is because the production of the round cross-section metal wire 100 requires less man-hours, and as a result, the price of the welded wire mesh can be reduced. And the location (welding point) where the vertical lines 101a, 101b, 101c, 101d and the horizontal lines 102a, 102b, 102c, 102d intersect is fixed by electric welding.

  According to JIS G 3551, among the reinforcing bars constituting the reinforcing bar lattice in the wire mesh, the “vertical line” is perpendicular to the iron wire or bar wire in the production direction (machine feed direction), and the horizontal line is perpendicular to the production direction (machine feed direction). Defined as directional wire or bar. However, it should be noted that in this specification, the iron wires constituting the wire mesh are defined as “vertical lines” that are arranged in any one direction, and the iron wires in the direction perpendicular to the vertical lines are defined as “horizontal lines”.

  When actually manufacturing a welded wire mesh, a large number of welding points exist in one welded wire mesh. For this reason, a welding machine capable of welding a large number of welding points existing in one welded wire mesh at a time, such as a pneumatic multi-spot welding machine, is used. With these manufacturing devices, the number of units manufactured per unit time has been dramatically improved, and it has become possible to widely use welded wire mesh in the field of building foundations and the like.

  Non-Patent Document 1 also recognizes the use of “deformed iron wire” instead of “round iron wire”. The “deformed iron wire” in this document is an iron wire in which two or more rows of protrusions (ribs) or indentations (indents) are regularly arranged on the surface. By using this “deformed iron wire”, it is expected to improve adhesion to concrete in the building field.

  In this way, mass production is possible by creating a welded wire mesh using a round iron wire or “deformed iron wire” with excellent mass productivity, and it has become possible to provide an inexpensive basic rebar and bird and animal damage prevention fence. .

JIS G 3551

  However, it is not possible to reduce the weight sufficiently by simply combining round iron wires. In Japan, aging is progressing, and in the field of construction and agricultural materials, it is required to be lightweight while maintaining sufficient strength. Therefore, it is preferable to provide a welded wire mesh that is equivalent and lightweight in terms of the standard and strength described above.

  Further, the “deformed iron wire” defined in JIS G 3551 is more expensive than the round iron wire, and there is a limit to reducing the price. Therefore, when importance is attached to the adhesion to concrete, a welded wire mesh using such a “deformed iron wire” which requires such man-hours is used, which is not preferable.

  An object of the present invention is to provide a method for making a welded wire mesh equivalent to JIS G 3551 lighter.

  Another object of the present invention is to provide a method for producing a low-cost welded wire mesh that has high adhesion to concrete without using a “deformed iron wire”.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  A typical wire mesh according to the present invention has two or more horizontal lines including the first horizontal line and two or more vertical lines including the first vertical line arranged orthogonally, and the intersections thereof are fixed to form a lattice. The first horizontal line is a polygonal cross-section metal wire having a polygonal cross section and twisted about an axis that is vertically raised from the center of the cross-sectional shape of the wire rod.

  In this wire mesh, the first vertical line may be a round cross-section metal wire.

  In this wire mesh, the first vertical line may be a polygonal cross-section metal wire.

  The wire mesh may be characterized in that the torsion amounts per unit length of the first vertical line and the first horizontal line are equal.

  The wire mesh may be characterized in that the torsion amounts per unit length of the first vertical line and the first horizontal line are different.

  Another typical wire mesh according to the present invention is arranged by orthogonally arranging two or more horizontal lines including the first horizontal line and two or more vertical lines including the first vertical line, and fixing their intersections. The first vertical line is a polygonal cross-section metal wire that has a polygonal cross section and is twisted about an axis that rises perpendicularly to the cross section from the center of the cross section.

  In this wire mesh, the first horizontal line may be a round cross-section metal wire.

  In this wire mesh, the first horizontal line may be a polygonal cross-section metal wire.

  The wire mesh may be characterized in that the torsion amounts per unit length of the first vertical line and the first horizontal line are equal.

  The wire mesh may be characterized in that the torsion amounts per unit length of the first vertical line and the first horizontal line are different.

  Another typical wire mesh according to the present invention is arranged such that two or more horizontal lines including a first horizontal line and a second horizontal line and two or more vertical lines including a first vertical line are orthogonally arranged. A wire mesh that has a lattice shape with fixed intersections, and the first horizontal line and the second horizontal line have a polygonal cross section and are twisted about an axis that is perpendicular to the cross section from the center of the cross sectional shape. Polygonal cross-section metal wire.

  In this wire mesh, the first vertical line may be a round cross-section metal wire.

  In this wire mesh, the first vertical line may be a polygonal cross-section metal wire.

  Another typical wire mesh according to the present invention is arranged such that two or more horizontal lines including a first horizontal line and two or more vertical lines including a first vertical line and a second vertical line are orthogonally arranged. A wire mesh that is formed in a lattice by fixing the intersections of the first and second vertical lines, each having a polygonal cross section and centering on an axis that is perpendicular to the cross section from the center of the cross section It is characterized by being a polygonal cross-section metal wire twisted by the wire.

  In this wire mesh, the first horizontal line may be a round cross-section metal wire.

  The wire mesh may be characterized in that the first horizontal line is a polygonal cross-section metal wire.

  Another typical wire mesh according to the present invention is a grid in which two or more horizontal lines and two or more vertical lines are arranged orthogonally and their intersections are fixed, and all the horizontal lines are It is a polygonal cross-section metal wire.

  Another typical wire mesh according to the present invention is a grid in which two or more horizontal lines and two or more vertical lines are arranged orthogonally, and their intersections are fixed to form a lattice. Is a polygonal cross-section metal wire.

  These wire meshes may be characterized in that any vertical line and any horizontal line are fixed by electric welding.

The weld metal mesh according to the present invention can reduce the weight of the metal member to be used and reduce the weight of the entire weld metal mesh.
Also, the welded wire mesh according to the present invention makes it possible to create a welded wire mesh that has high adhesion to concrete without using an expensive “deformed iron wire” and is inexpensive.

It is a perspective view showing the round iron wire used when producing the conventional welded wire mesh. It is a front view of the conventional welded wire mesh. FIG. 3 is a perspective view of the conventional welded wire mesh shown in FIG. 2. The metal wire used when producing the welded wire mesh concerning the 1st Embodiment of this invention is represented. 1 is a front view of a welded wire mesh according to a first embodiment of the present invention. FIG. 6 is a perspective view of a welded wire mesh according to the first embodiment of the present invention shown in FIG. 5. It is a conceptual diagram which contrasts the cross-sectional shape of a round cross-section metal wire and the polygon cross-section metal wire in connection with this invention. It is a conceptual diagram showing the effect of polygon cross-section metal wire adoption. It is sectional drawing showing the polygonal cross-section metal wire in case a cross section is a hexagon. It is a figure showing a welded metal net | network when only a horizontal line is changed into a polygon cross-section metal wire. It is a figure showing a welded wire net | network when the ratio of a round iron wire and a polygonal cross-section metal wire is set to 1: 1 for both a vertical line and a horizontal line.

  The present invention is characterized by using a twisted metal wire having a polygonal cross section such as a rectangle used in a grating (groove cover) or the like (hereinafter referred to as “polygonal cross section metal wire”) instead of a round iron wire. To do.

Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment)
FIG. 4 is a diagram showing a polygonal cross-section metal wire 200 used when creating the welded wire mesh according to the first embodiment of the present invention. FIG. 5 is a front view of a welded wire mesh according to the first embodiment of the present invention. FIG. 6 is a perspective view of a welded wire mesh according to the first embodiment of the present invention shown in FIG.

  FIG. 7 is a conceptual diagram comparing the cross-sectional shapes of the round cross-section metal wire 100 and the polygon cross-section metal wire 200 according to the present invention, and FIG. 8 is for explaining the effect of reducing the wire weight according to the present invention. It is a conceptual diagram.

  The polygonal cross-section metal wire 200 is a wire having a square or rectangular cross section. As is clear from FIG. 7, the cross-sectional diameter A of the round cross-section metal wire 100 having the target strength and the diagonal distance B of the polygon cross-section metal wire 200 also have substantially the same value. As shown in FIG. 4, the polygonal cross-section metal wire 200 is twisted about an axis that rises perpendicularly to the cross section from the center of the cross section.

  Note that “twist” is defined as applying force to both ends of an “elongate object” and rotating them in opposite directions (Shogakukan “Ojizumi”). Therefore, care should be taken to avoid interpretations that contradict this meaning.

  As a result, the polygonal cross-section metal wire 200 has the same strength as the round cross-section metal wire 100 not only from one direction but also from a plurality of directions. As a result, the round cross-section metal wire 100 and the polygonal cross-section metal wire 200 have the same strength.

  In addition, the cross section of the polygonal cross-section metal wire 200 has the effect of the present invention in the same manner even when the cross section is not square or rectangular.

FIG. 9 is a cross-sectional view illustrating a polygonal cross-section metal wire 200 having a hexagonal cross section.
As can be seen from this figure, the distance of the opposite corners of a hexagonal or octagonal cross section is almost the same as the diameter of the round cross-section metal wire 100, and it is the same as a square or rectangular cross section by twisting about the axial direction. The effect of.

  Even in the case of cross-sectional shapes such as pentagons and heptagons that do not have opposing corners, the length of the side facing each corner is close to the cross-sectional diameter A. As a result, even with an odd-angled section, the torsional effect is as effective as an even-numbered section.

  As a result, it is possible to reduce the weight of the wire according to the area ratio of the cross section of the metal wire. FIG. 8 illustrates the effect of a square shape. The weight of the polygonal cross-section metal wire 200 is lower than that of the round cross-section metal wire 100 by the shaded portion in the figure, and a lightweight welded wire mesh can be created. The reasoning is the same even when the cross section is another polygon.

In the present embodiment, a welded wire mesh is created using this square cross-section metal wire 200.
As shown in FIGS. 5 and 6, in the welded wire mesh according to the present invention, the polygonal cross-section metal wire 200 having substantially the same strength as the round cross-section metal wire 100 is connected to the vertical lines 201 a, 201 b, 201 c, 201 d and the horizontal lines. Used for 202a, 202b, 202c, 202d. For this reason, even if it sees in the whole welding wire mesh, it becomes possible for the welding wire mesh which exists conventionally, and the welding wire mesh concerning this invention to have the same intensity | strength.

  In addition, if the material is the same as that of the round cross-section metal wire 100, a tool such as a pneumatic multi-spot welder may be used in the production of a welded wire mesh using the polygon cross-section metal wire 200. Is possible. And since it is possible to use the same construction method, the welding strength at the intersection of a vertical line and a horizontal line is the same as that of a conventional welded wire mesh. Therefore, the strength of the entire welded wire mesh is almost the same as that of the conventional welded wire mesh.

  As described above, by using the twisted polygonal cross section metal wire 200, it is possible to reduce the weight per unit length while giving the same strength as the conventional round cross section metal wire 100. As a result, the weight of the entire welded wire mesh can be reduced. Needless to say, if all the vertical lines and horizontal lines are made of the polygonal cross-section metal wire 200 having the same cross-sectional shape, the weight can be reduced according to the area ratio of the cross-section of the wire.

In the description of the above-described welded wire mesh, the cross-sectional shape of the polygonal cross-section metal wire 200 is assumed to be a quadrangle. However, even in other cross-sectional shapes of the wire, for example, even if the cross-sectional shape of the polygonal cross-section metal wire 200 is a pentagon, hexagon, or the like, the same effect is obtained, and the area ratio of the cross-section of the wire and the polygon cross-section metal It goes without saying that the weight of the welded wire mesh can be reduced according to the usage ratio of the wire 200.

  Needless to say, the scope of the present invention also includes a case in which all the wires of the welded wire mesh are not changed to the polygonal cross-section metal wire 200.

  FIG. 10 is a diagram showing a welded wire mesh when only the horizontal line is changed to the polygonal cross-section metal wire 200. Moreover, FIG. 11 is a figure showing a welded wire net | network when the ratio of a round iron wire and a polygonal cross-section metal wire material is set to 1: 1 for both a vertical line and a horizontal line.

As shown in FIG. 10, the polygonal cross-section metal wire 200 may be applied to the horizontal lines 302a, 302b, 302c, and 302d, and the conventional round cross-section metal wire 100 may be used for the vertical lines 301a, 301b, 301c, and 301d. Even if it is such a structure, it is because the adhesiveness with concrete can be ensured when using as a foundation of construction.
Of course, there is no problem even if the polygonal cross-section metal wire 200 is applied only to the vertical line.

  In addition, as shown in FIG. 11, a round cross-section metal wire 100 and a polygonal cross-section metal wire 200 may be used alternately with vertical lines and / or horizontal lines. In the example of the vertical line in FIG. 11, the polygonal cross-section metal wire 200 is applied to 401b and 401d, and the round cross-section metal wire 100 is used for 401a and 401c. In the example of the horizontal line in FIG. 11, the polygonal cross-section metal wire 200 is applied to 402b and 402d, and the round cross-section metal wire 100 is used to 402a and 402c.

  Moreover, in FIG. 11, the ratio of the round cross-section metal wire 100 and the square cross-section metal wire 200 was 1: 1. However, the ratio may be changed to 1: 2 or 2: 1 (other ratios are possible as well) as appropriate. Furthermore, you may change the ratio of the round cross-section metal wire 100 and the square cross-section metal wire 200 with a vertical line and a horizontal line.

  Thus, it is also included in the scope of the present invention to mix a round cross-section metal wire and a polygon cross-section metal wire in one wire mesh.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

  For example, the description has been made in consideration of JIS G 3551, but is not necessarily limited to this. Needless to say, a wire mesh using a “round iron wire” defined in JIS G 3551 is included in the range of the present invention even if it is a non-JIS-compliant product.

  For example, JIS G 3551 defines a welded wire mesh. However, it is also possible to use the polygonal cross-section metal wire 200 instead of the round cross-section metal wire 100 for the wire mesh using other bonding methods, for example, chemical bonding with an adhesive, as long as the strength is maintained. It goes without saying that such a case is also included in the range of the present invention.

  Furthermore, the twist amount per unit length of the polygonal cross-section metal wire 200 (for example, the twist angle of 360 degrees per 5 cm) may be the same between the vertical line and the horizontal line, or may be different.

  Further, in FIG. 10 and FIG. 11, it is included in the scope of the present invention to use “deformed iron wire” instead of the round cross-section metal wire 100 and mix the “deformed iron wire” and the polygonal cross-section metal wire 200 to form a wire mesh. .

  Furthermore, when multiple types of polygonal cross-section metal wires 200 are mixed, for example, when a polygon cross-section metal wire 200 having a quadrangular cross section and a polygon cross-section metal wire 200 having a pentagonal cross section are mixed in a single wire mesh, Is also included in the range of the present invention.

It is assumed that it will be used as a basic reinforcing bar for construction or a metal wire mesh for preventing damage to birds and animals. However, the use is not necessarily limited thereto, and may be used for other uses as long as it is a welded wire mesh.

100: Marutetsu wire,
200: Polygonal cross-section metal wire,
101a, 101b, 101c, 101d, 201a, 201b, 201c, 201d
301a, 301b, 301c, 301d, 401a, 401b, 401c,
401d: vertical line,
102a, 102b, 102c, 102d, 202a, 202b, 202c, 202d
, 302a, 302b, 302c, 302d, 402a, 402b, 402c,
402d: horizontal line,

Claims (19)

A wire mesh in which two or more horizontal lines including the first horizontal line and two or more vertical lines including the first vertical line are arranged orthogonally and their intersections are fixed to form a lattice,
The wire mesh according to claim 1, wherein the first horizontal line is a polygonal cross-section metal wire having a polygonal cross section and twisted about an axis that is vertically raised from the center of the cross-sectional shape of the wire rod.   2. The wire mesh according to claim 1, wherein the first vertical line is a round cross-section metal wire.   The wire mesh according to claim 1, wherein the first vertical line is a polygonal cross-section metal wire.   4. The wire mesh according to claim 3, wherein the twist amount per unit length of the first vertical line and the first horizontal line is equal.   The wire mesh according to claim 3, wherein a twist amount per unit length of the first vertical line and the first horizontal line is different. A wire mesh in which two or more horizontal lines including the first horizontal line and two or more vertical lines including the first vertical line are arranged orthogonally and their intersections are fixed to form a lattice,
The wire mesh according to claim 1, wherein the first vertical line is a polygonal cross-section metal wire rod having a polygonal cross section and twisted about an axis that is perpendicular to the cross section from the center of the cross-sectional shape.   The wire mesh according to claim 6, wherein the first horizontal line is a round cross-section metal wire.   The wire mesh according to claim 6, wherein the first horizontal line is a polygonal cross-section metal wire.   9. The wire mesh according to claim 8, wherein the twist amount per unit length of the first vertical line and the first horizontal line is equal.   The wire mesh according to claim 8, wherein a twist amount per unit length of the first vertical line and the first horizontal line is different. A wire mesh in which two or more horizontal lines including the first horizontal line and the second horizontal line and two or more vertical lines including the first vertical line are arranged orthogonally and their intersections are fixed to form a lattice. And
The first horizontal line and the second horizontal line are polygonal cross-section metal wires each having a polygonal cross section and twisted about an axis that is perpendicular to the cross section from the center of the cross-sectional shape. Wire mesh.   The wire mesh according to claim 11, wherein the first vertical line is a round cross-section metal wire.   The wire mesh according to claim 11, wherein the first vertical line is a polygonal cross-section metal wire. A wire mesh in which two or more horizontal lines including the first horizontal line and two or more vertical lines including the first vertical line and the second vertical line are arranged orthogonally and their intersections are fixed to form a lattice. There,
The first vertical line and the second vertical line are polygonal cross-section metal wires having a polygonal cross section and twisted about an axis that is perpendicularly raised from the center of the cross-sectional shape. Characteristic wire mesh.   The wire mesh according to claim 14, wherein the first horizontal line is a round cross-section metal wire.   The wire mesh according to claim 14, wherein the first horizontal line is a polygonal cross-section metal wire. A wire mesh in which two or more horizontal lines and two or more vertical lines are arranged orthogonally and their intersections are fixed to form a lattice,
A wire mesh characterized in that all the horizontal lines are polygonal cross-section metal wires. A wire mesh in which two or more horizontal lines and two or more vertical lines are arranged orthogonally and their intersections are fixed to form a lattice,
A wire mesh characterized in that all the vertical lines are polygonal cross-section metal wires. A wire mesh according to any one of claims 1 to 18,
A wire mesh, wherein any one of the vertical lines and any one of the horizontal lines is fixed by electric welding.

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