JP3077424U - Blind metal with fins - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a structure in which mortar leakage can be further reduced in blind metal used for construction of a vertical joint surface of a concrete structure. SOLUTION: In an expanded metal in which a metal plate is subjected to a predetermined pattern of cutting and forming a tortoiseshell-shaped mesh, a short-side boundary of each mesh is formed by a blind plate inclined with respect to a plate surface, and Fins that are inclined in the plate surface direction are provided on the mesh-side end surface of the blind plate. [Effect] Concrete placing work is streamlined.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a finned blind metal which is used for the construction of a vertical joint surface of a concrete structure and has an excellent effect.

[0002]

[Prior art]

 Expanded metal, in which meshes of various shapes such as lattices and rhombuses are formed by subjecting a metal plate to a certain pattern of cutting, is used in various fields. In the cutting process, the upper blade is moved up and down according to the shape and size of the mesh, reciprocated in the horizontal direction, and the metal plate is sent out to cut the metal plate in a zigzag pattern. This is a processing method that expands this to form a mesh.

[0003] The obtained expanded metal is lightweight and robust, is easy to handle and construct, and has a large anti-slip effect. Therefore, it is suitable for flooring of factories and ships, footboards of corridors and stairs, and air permeability. Because of its good properties, it is used for gutter lids, ventilation windows, etc., and it is also used to select the shape and dimensions of meshes for protective fences, concrete reinforcement, ceilings and interior goods for decoration. I have.

[0004] A mesh shape in which the mesh shape is a flat tortoiseshell, and the short-side boundary of each mesh is formed to be inclined with respect to the plate surface, is called blind metal, and is used for construction of a joint surface of a concrete structure. Used in The part inclined with respect to this plate surface is called a blind plate.

[0005] Fig. 8 shows an example of construction of a concrete vertical joint surface. Since the blind plate 3 is inclined at about 45 ° with respect to the plate surface of the blind metal 1, when the raw concrete 12 is cast as shown in the figure, the mortar leakage from the mesh 2 is suppressed by the blind plate 3. You. For this reason, concrete can be compacted sufficiently, and cleaning work after casting can be reduced. After the hardening and curing of the ready-mixed concrete 12, the concrete poured on the right side of the figure is passed through the mesh 2 and the blind metal 1 is embedded.

[0006]

[Problems to be solved by the invention]

 In the above-mentioned conventional blind metal, it is desired that the mortar leakage at the vertical joint surface be further reduced, thereby improving the concrete casting yield and further streamlining the casting work. Therefore, the problem to be solved by the present invention is to make the blind metal used for the construction of the vertical joint surface of the concrete structure, etc., a structure that can further reduce the mortar leakage.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention relates to an expanded metal in which a metal plate is subjected to a certain pattern of cutting to form a turtle-shaped mesh, and a blind in which a short-side boundary of each mesh is inclined with respect to a plate surface. The blind metal is provided with fins formed of a plate and having fins inclined in a plate surface direction at a mesh side end of the blind plate.

[0008]

[Embodiment of the invention]

 FIGS. 1 and 2 show examples of the blind metal of the present invention. FIG. 1 is a plan view of the blind metal 1, and FIG. 2 is a sectional view taken along the line AA of FIG. In the blind metal 1 of the present invention, as shown in FIG. 1, a turtle-shaped mesh 2 is arranged in a staggered manner, and a short-side (vertical direction in FIG. 1) boundary of each mesh 2 is formed by a blind plate 3. The blind plate 3 is formed so as to be inclined with respect to the plate surface of the blind metal 1 as shown in FIG. 2, and the end of the blind metal 3 on the mesh 2 side as shown in FIG. 1 and FIG. The fins 4 are provided to be inclined in the plate surface direction.

The fins 4 are provided at the upper end in the drawing of the blind plate 3 in this embodiment, but may be provided at the lower end in the drawing. Also, it may be provided at both upper and lower ends of the drawing. Furthermore, as in the example shown in FIG. 3, the blind plate 3 may be formed discontinuously at the end.

Next, a method of manufacturing the blind metal according to the present invention will be described with reference to FIGS. FIG. 4A is a front view of the blind metal 1 of the present invention being manufactured, and FIG. 4B is a cross-sectional view taken along the line BB of FIG. 4A. As shown in FIG. 4B, the blind metal 1 is manufactured by cutting the metal plate 6 by the upper blade 8 and the lower blade 9 while feeding the metal plate 6 by the feed roller 7.

As shown in FIG. 4A, the upper blade 8 has a shape corresponding to the shape and size of the mesh 2 and a pitch in the longitudinal direction (horizontal direction in the figure), and moves up and down and reciprocates in the horizontal direction. Then, a zigzag cut is made in the metal plate 6 and the metal plate 6 is continuously expanded to form a turtle-shaped mesh 2. The lower blade 9 is fixed, and the metal plate 6 is fed in conjunction with the vertical movement of the upper blade 8.

As a result, a blind plate 3 that is inclined with respect to the plate surface is formed at the boundary between the meshes 2 in the short direction (vertical direction in the drawing). In this example, since the notch 10 is provided in the upper blade 8, the fin 4 inclined in the plate surface direction is formed at the upper end of the blind plate 3. The notch 10 may also be provided in the lower blade 9, in which case the fin 4 is formed at the lower end of the blind plate 3.

FIG. 5 shows a detailed example in which the notch 10 is provided in the upper blade 8. By providing the notch 10, the edge of the upper blade 8 has two steps, e and f. When the upper blade 8 is lowered, the metal plate 6 is first bent between the edge e of the upper blade 8 and the edge g of the lower blade 9 as shown in FIG. 5A, and then as shown in FIG. The fin 4 is formed at the upper end of the blind plate 3 by being cut between the edge f of the blade 8 and the edge g of the lower blade 9.

Next, an example in which the notch 10 is provided in the lower blade 9 is shown in FIG. Since the edge of the lower blade 9 has two steps of g and h due to the notch 10, when the upper blade 8 is lowered, the metal plate 6 first moves to the edge of the upper blade 8 as shown in FIG. e and the edge h of the lower blade 9, and then cut between the edge e of the upper blade 8 and the edge g of the lower blade 9 as shown in FIG. A fin 4 is formed at the side end. The fins 4 become lower end side fins of the next blind plate 3 by the next cutting process.

In order to form the discontinuous fins 4 at the upper end of the blind plate 3 as shown in FIG. 3, a discontinuous notch 10 may be provided in the upper blade 8. In order to form discontinuous fins 4 at the lower end of the blind plate 3, discontinuous notches 10 may be provided in the lower blade 9.

[0016] Fig. 7 shows an example of the construction of a concrete vertical joint surface using the finned blind metal of the present invention. The blind plate 3 is inclined with respect to the plate surface of the blind metal 1, and the fins 4 are formed at the upper end of the blind plate 3 so as to be inclined in the plate surface direction. When the mortar is cast, mortar leakage from the mesh 2 is further suppressed by the blind plate 3 and the fins 4 as compared with the conventional example of FIG.

[0017] For this reason, concrete can be compacted more sufficiently, and the cleaning work after casting can be further reduced. After solidification and curing of the ready-mixed concrete 12, the concrete poured on the right side of the figure is passed through the mesh 2 and the blind metal 1 is embedded.

[0018]

[Effect of the invention]

 The blind metal of the present invention is formed by a blind plate in which the short-side boundary of the tortoise-shaped mesh is inclined with respect to the plate surface, and fins which are inclined in the plate surface direction are provided at the mesh side end of the blind plate. Therefore, when laying concrete, the mortar leakage from the mesh is further reduced, the yield of concrete is improved, and the concrete casting work is streamlined.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of the blind metal of the present invention.

2 shows an example of the blind metal of the present invention; FIG.
It is arrow A sectional drawing.

FIG. 3 is a plan view showing another example of the blind metal of the present invention.

FIG. 4 shows an example of manufacturing blind metal according to the present invention;
(A) is a front view, and (b) is a cross-sectional view taken along the line BB of (a).

FIGS. 5A and 5B are explanatory views showing a cutting process in a manufacturing example of the blind metal of the present invention.

FIGS. 6 (a) and (b) are explanatory views showing another cutting process in a blind metal manufacturing example of the present invention.

FIG. 7 is a longitudinal sectional view showing an example of using the blind metal of the present invention.

FIG. 8 is a longitudinal sectional view showing an example of use of a conventional blind metal.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Blind metal 2 ... Mesh 3 ... Blind plate 4 ... Fin 5 ... Strand 6 ... Metal plate 7 ... Feed roller 8 ... Upper blade 9 ... Lower blade 10 ... Notch 11 ... Mortar 12 ... Fresh concrete

Claims (1)

[Utility model registration claims] 1. An expanded metal formed by subjecting a metal plate to a predetermined pattern of cutting and forming a tortoiseshell-shaped mesh, wherein a short-side boundary of each mesh is formed by a blind plate inclined with respect to the plate surface, and A blind metal with fins, characterized in that fins inclined in the plate surface direction are provided at the mesh side end of the blind plate.