JPH05195619A - Flexible form and manufacture thereof - Google Patents

Abstract

PURPOSE:To easily form a flexible form having a complex shape and efficiently perform the form work when constructing a concrete structure having an rounded complex shape such as a circular shape or an elliptic shape. CONSTITUTION:A plate 10 made of foam resin and metal lath 14 formed with many meshes 12 and buried on the side face of the plate 10 are provided. The metal lath 14 formed with many meshes 12 is arranged on one face of the plate 10 made of foam resin, and the metal lath 14 and the plate 10 are roll- molded into a plate shape. The metal lath 14 formed with many meshes 12 is arranged in a die 18, a foaming agent 20 and foam resin 22 are added into the die 18, then they are foamed and molded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible mold and its manufacturing method. This kind of formwork is used when constructing a concrete structure having a complex shape with R attached.

[0002]

2. Description of the Related Art Conventionally, when constructing a concrete structure having a complicated shape having a curvature, such as a column or beam having a circular cross section, a hollow portion such as a hollow cross slab having a circular cross section, or an R having a corner. Forms a form according to the shape of the structure each time.

[0003]

However, in the above-mentioned conventional construction method, since it is necessary to form and install the formwork in a complicated shape according to the shape of the concrete structure to be constructed, the work is extremely complicated. In addition, it is difficult to secure workers because the work requires skill.

Further, since this type of work is often done manually, it is difficult to simplify the process, which makes it difficult to shorten the construction period, and it is inevitable that the cost will rise due to an increase in personnel costs.

The present invention was devised in view of the above-mentioned conventional circumstances, and an object thereof is to easily form a complicated shape in accordance with its shape, and to make it into an R shape such as a circular shape or an elliptical shape. It is an object of the present invention to provide a flexible formwork capable of efficiently performing a formwork when constructing a concrete structure having a complicated shape with a mark and a method for manufacturing the same.

[0006]

In order to achieve the above object, the mold and manufacturing method according to the present invention are constructed as follows.

The mold of the first invention comprises a plate member 10 made of foamed resin, and a metal lath 14 having a large number of meshes 12 formed therein and embedded in the side surface of the plate member 10.

In the manufacturing method of the second invention, the metal lath 14 on which a large number of meshes 12 are formed is arranged on one side of the plate material 10 made of foamed resin, and the metal lath 14 and the plate material 10 are roll-formed into a plate shape. It is characterized by

Further, in the manufacturing method according to the third aspect of the invention, the metal lath 14 on which a large number of meshes 12 are formed is placed in the mold 18, and the foaming resin 22 is added to the mold 18 together with the foaming agent 20 to foam. After that, it is characterized by being molded into a plate shape.

[0010]

In the present invention, the reinforcing metal lath 14 having a large number of meshes 12 is embedded in the side surface of the plate material 10 made of foamed resin, and the strength against pulling is remarkably enhanced, so that the plate material 10 is broken. It can be bent to the opposite side of the metal lath 14 without.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the mold according to the first invention.

As shown in the figure, the mold 16 includes a plate member 10,
The metal lath 14 is embedded in the side surface of the plate material 10.

The plate member 10 is formed of a foamed resin such as polystyrene resin, polyurethane resin, polyethylene resin, urea resin or phenol resin.

The metal lath 14 has a large number of meshes 12. In the illustrated embodiment, each mesh 12 is formed in a substantially rhombic shape, but it is not limited to this and may be formed in a rectangular shape or a circular shape.

Generally, the foamed resin is relatively strong against compression, but brittle against tension and easily broken. However, by embedding the metal lath 14 having a large number of meshes 12 in the side surface of the plate material 10, the strength against tension is increased. Since it is remarkably increased and the toughness is remarkably increased, the plate material 10 can be easily bent to the opposite side of the metal lath 14 without breaking.

Therefore, even if the concrete structure to be constructed has a complicated shape with a curvature, it is possible to extremely easily form and install the formwork 16 conforming to the shape as shown in FIG.

In addition to the drawings, the mold 16 can be used to easily construct a column or beam having a circular or elliptical cross section, or a hollow portion such as a hollow slab having a circular cross section.

As described above, the mold 16 of this embodiment
Of the metal lath 14 having a large number of meshes 12 embedded in the side surface of the plate material 10 made of foamed resin, the strength against pulling is remarkably increased and the toughness is significantly increased, so that the metal lath 14 is not broken. Can be easily bent to the other side.

Therefore, even if the concrete structure to be constructed has a complicated shape having a curvature, it is possible to extremely easily form and install the mold 16 suitable for the shape. As a result, it is possible to reduce the cost due to the reduction of labor cost and shorten the construction period. Furthermore, the formwork 16 is lightweight and can be easily and quickly transported and assembled.

FIG. 3 shows a first embodiment of the method for manufacturing the form. As shown, a plate material 1 made of foamed resin
On the lower surface of 0, a metal lath 14 having a large number of meshes 12 is formed.
(See FIG. 1) are arranged. The plate material 10 and the metal lath 14 are arranged in two rows so as to face each other.
Roll-molded with 4,24. This makes it possible to provide a highly accurate mold.

As described above, according to this embodiment, a flexible mold can be easily manufactured with high accuracy.

FIG. 4 and FIG. 5 show a second embodiment of the method for manufacturing the mold. As shown in FIG. 4, a metal lath 14 having a large number of meshes 12 is arranged on the bottom surface of the mold 18.

Then, the foaming resin 22 is poured into the mold 18 together with the foaming agent 20 such as Freon gas, heated and foamed, and then cooled to mold the plate-shaped mold frame 16.
As the foamed resin 22, polystyrene resin, polyurethane resin, polyethylene resin, urea resin, phenol resin or the like is used.

In addition to the illustrated example for cooling and solidification, most molding methods (for example, injection molding method, extrusion molding method, etc.)
Can be used.

As described above, according to this embodiment, a flexible mold can be easily manufactured. Also,
Since it is easy to process, panels of various shapes can be easily molded.

[0026]

As described above, according to the present invention, since the metal lath having a large number of meshes is embedded in the side surface of the plate material made of foamed resin, the strength against pulling is remarkably increased and the toughness is remarkably increased. Therefore, the plate material can be easily bent to the opposite side of the metal lath without breaking.

Therefore, even if the concrete structure to be constructed has a complicated shape with a curvature, it is possible to extremely easily form and install a formwork suitable for the shape.
As a result, it is possible to reduce the cost due to the reduction of labor cost and shorten the construction period. In addition, the formwork is lightweight and easy to transport and assemble.

Further, according to the manufacturing method of the present invention, it becomes possible to easily manufacture a flexible mold with high accuracy.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a mold according to the present invention.

FIG. 2 is a perspective view showing an example of construction using a mold according to the present invention.

FIG. 3 is a schematic view showing a method for manufacturing a mold according to the present invention.

FIG. 4 is a perspective view (No. 1) showing a method for manufacturing a mold according to the present invention.

FIG. 5 is a perspective view (No. 2) showing the method for manufacturing the mold according to the present invention.

[Explanation of symbols]

 10 Plate Material 12 Mesh 14 Metal Lath 16 Form Frame 18 Type 20 Foam Material 22 Foam Resin 24 Roller

Claims (3)

[Claims] 1. A plate material (10) made of foamed resin, and a metal lath (14) having a large number of meshes (12) formed therein and embedded in the side surface of the plate material (10). Flexible formwork. 2. A metal lath (14) on which a large number of meshes (12) are formed is arranged on one side of a plate material (10) made of foamed resin, and the metal lath (14) and the plate material (10) are rolled into a plate shape. A method for manufacturing a flexible mold, characterized by being molded. 3. A metal lath (14) having a large number of meshes (12) formed therein is placed in a mold (18), and a foaming resin (22) is added to the mold (18) together with a foaming agent (20). A method for producing a flexible mold, wherein the flexible mold is formed into a plate shape after being foamed.