JP2000000811A - Production of artificial rock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently produce an artificial rock forming a complex shape. SOLUTION: A thermoplastic material which is cured at a normal temperature and becomes an elastic deformable formwork 3, is brought into contact with a rock becoming the origin of transcription, in such a state that the thermoplastic material is heated and molten. In such a stage that the thermoplastic material is cured and the thin-walled and bag-shaped formwork 3 has been formed, the formwork 3 is released from rock by utilizing elastic deformation thereof. After the formwork 3 is held in a constant shape by a shape retaining means 4 such as sand, concrete 6 or the like is placed and hardened. Thereby, an artificial rock keeping a shape corresponding to the rock is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a pseudo-rock, which is suitable for producing a pseudo-rock having a relatively large size and a complicated surface.

[0002]

2. Description of the Related Art In the fields of architecture, civil engineering, landscaping, and the like, demand for natural stones is increasing. However, in recent years, natural stones have become remarkably short, and it is often difficult to obtain natural stones. Therefore, instead of natural stone, various artificial rocks made of concrete have been produced.

[0003] This type of pseudo rock is prepared, for example, by preparing a steel plate form provided with a urethane resin layer obtained by transferring the form of a rock surface on its inner surface, casting concrete in the form, and placing the concrete in the form. At the stage when is hardened, a desired pseudo rock is obtained by dividing the mold into a plurality and releasing the mold.

[0004]

However, such a steel mold cannot cope with a complicated uneven surface of rock. That is, since this type of form cannot be deformed significantly, it is impossible to produce a pseudo rock having an overhang portion on the surface. By force,
If it is attempted to manufacture such a complex-shaped artificial rock using a conventional mold, the mold must be destroyed each time the mold is released, making it difficult to reuse the mold.

Therefore, there is a problem that it is difficult to produce a pseudo rock having a complicated form.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of coating a rock as a transfer source by using a thermoplastic material which cures at room temperature to form an elastically deformable mold. After forming a thin-walled bag-shaped form, holding the form separated from the rock in a fixed shape by means of shape-retaining means, placing concrete, mortar, or cement paste into the form to form a pseudo-rock. To manufacture.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The method for producing a pseudo rock according to the present invention is characterized in that a rock as a transfer source is brought into contact with a thermoplastic material which is hardened at room temperature to become an elastically deformable form while being heated and melted,
At the stage where the thermoplastic material is cured to form a film-like form covering the rock, the form is separated from the rock by utilizing its elastic deformation, and the form is separated by shape-retaining means. After being held in a fixed shape, concrete, mortar, or cement paste is poured into the form and hardened to obtain a pseudo rock having a form corresponding to the rock.

[0008] The shape-retaining means may be a material that can be formed and dismantled, such as sand or a viscosity, filled on the outside of the form, an aggregate filled on the inside of the form, or a constraint on the outside of the form. And a rigid form made of iron or the like. When the form is filled with the aggregate and the shape is maintained, mortar or cement paste is poured into the form. According to such a manufacturing method, since a relatively thin and elastically deformable mold can be used, even if a shape portion having an overhang portion is present on the surface of the rock as a transfer source, the mold can be used. Can be released by effectively utilizing the elastic deformation of the mold.
Thus, according to such a method, it is not necessary to break the form even when producing a complex artificial rock, and the form can be used many times.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. First, as shown in FIG. 1, a rock 1 as a transfer source is prepared. The rock 1 is preferably natural stone, but is not necessarily limited to natural stone. Then, as shown in FIG. 2, the thermoplastic material 2 is brought into contact with the rock 1 while being heated and melted. Specifically, as the thermoplastic material 2, for example, “EM / M”
(Product name: Sumitomo Osaka Cement Co., Ltd.) or the like is used.
This “EM / M” is a thermoplastic elastomer in which oil is sealed in a three-dimensional network structure of a special polymer, and becomes a rubber elastic body at room temperature and becomes an oily state at a high temperature of 210 ° C. or more.

As described above, the thermoplastic material 2 is
The thermoplastic material 2 flows along the outer surface of the rock 1 sequentially due to its viscosity, and descends while being cooled. Then, as shown in FIG. 3, at the stage when the thermoplastic material 2 is cured and the mold 3 covering the rock 1 is formed, the mold 3 is removed from the rock 1 by utilizing its elastic deformation. By peeling, a thin bag-shaped formwork 3 as shown in FIG. 3 is obtained. The average thickness of the mold 3 is preferably about 0.5 cm to 2.0 cm, but is not necessarily limited to this value.

Next, the mold 3 is held in a fixed shape by sand 4 as a shape keeping means. Specifically, for example, as shown in FIG. 5, in a state where the mold 3 is located in the outer casing 5, the outside of the mold 3 is filled with the sand 4, and the shape of the mold 3 is changed. Is kept as close as possible to the original rock 1. In this state, concrete 6 is poured into the formwork 3. When the concrete 6 has hardened, as shown in FIG. 6, the mold 3 is released by utilizing the elastic deformation of the mold 3 to obtain a pseudo rock 7. Since the shape of the rock 1 is transferred to the pseudo rock 7 via the form 3, the appearance of the pseudo rock 7 is as follows.
It is the same as or similar to the rock 1.

As described above, the present manufacturing method uses the rubber elastic body and the thin mold 3 so that even when the rock 1 having a complicated surface shape is transferred, the elastic deformation of the mold 3 can be effectively performed. It is possible to perform a mold release operation by utilizing this. Therefore, for example, it is possible to produce a pseudo rock (not shown) without difficulty even for a rock 9 having many overhang portions 8 as shown in FIG.

The shape retaining means is not limited to that of the above-described embodiment, and may be, for example, as shown in FIG. That is, the one shown in FIG.
1 is filled. In this case, a quasi-rock made of concrete is manufactured by placing mortar 12 or cement paste 13 into the gap formed between the aggregates 11. In this case,
As shown in FIG. 8, it is desirable that the opposing inner surfaces of the formwork 3 be connected by a reinforcing member 14. As still another embodiment of the shape retaining means, a material that can be shaped and dismantled, such as clay, is used instead of the sand, or the outside of the mold 3 is restrained by a rigid mold. And the like. Examples of the rigid formwork include those made of iron, steel, resin, and the like.

[0014]

As described in detail above, the present invention uses a relatively thin and elastically deformable mold, so that it is easy to release the mold from various surface shapes. Even in the case where the rock as the transfer source has an overhang portion on the surface, the mold releasing operation can be performed without difficulty using the elastic deformation of the formwork effectively. Therefore, a pseudo rock simulating a rock having a complicated shape can be easily manufactured. In addition, the use of a thin-walled form makes it possible to reduce the weight of the form, and even in the case of producing a pseudo rock simulating a huge rock, it is possible to omit large-scale facilities for handling the form. Is also obtained. further,
ADVANTAGE OF THE INVENTION According to this invention, even if it manufactures a complex pseudo-rock, it is not necessary to destroy a formwork, and since the formwork can be reused many times, production efficiency can be attained.

[Brief description of the drawings]

FIG. 1 is a process explanatory view showing one embodiment of the present invention.

FIG. 2 is a process explanatory view showing the embodiment.

FIG. 3 is a process explanatory view showing the same embodiment.

FIG. 4 is a process explanatory view showing the embodiment.

FIG. 5 is a process explanatory view showing the embodiment.

FIG. 6 is a process explanatory view showing the embodiment.

FIG. 7 is an explanatory view corresponding to FIG. 1, showing another embodiment of the present invention.

FIG. 8 is an explanatory view corresponding to FIG. 5, showing still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rock 2 ... Thermoplastic material 3 ... Formwork 4 ... Shape retaining means (sand) 6 ... Concrete 7 ... Pseudo rock 9 ... Rock 11 ... Shape retaining means (aggregate)

Continued on the front page (72) Inventor Kikuo Tachibana 7-55 Minamionkajima, Taisho-ku, Osaka City Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory (72) Inventor Tatsuharu Tanahashi Minamienkajima, Taisho-ku, Osaka-shi 7-1-55 Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory (72) Inventor Nobuyuki Tanaka 7-1-155 Minamienkajima, Taisho-ku, Osaka Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Laboratory (72) Inventor Haruyuki Serikawa 7-28-7-205 Higashishinkoiwa, Katsushika-ku, Tokyo F-term (reference) 4G053 AA07 AA11 CA16 CA21 CA23 CA26 DA03 EA26 EB02 EB05

Claims (4)

[Claims] 1. A transfer source rock is brought into contact with a thermoplastic material which is hardened at room temperature to become an elastically deformable mold while being heated and melted, and the thermoplastic material hardens and coats the rock. At the stage when the thin bag-shaped form is formed, the form is separated from the rock by utilizing its elastic deformation, and the form is held in a fixed shape by shape-retaining means. A method for producing a pseudo-rock, wherein a pseudo-rock having a form corresponding to the rock is obtained by pouring concrete, mortar, or cement paste into the inside and hardening. 2. The method according to claim 1, wherein the shape-retaining means is a material that can be shaped and dismantled, such as sand or clay, filled on the outside of the mold. 3. The method according to claim 1, wherein the shape retaining means is an aggregate filled inside the formwork. 4. The method of claim 1, wherein the shape-retaining means is a rigid form for restraining the outside of the form.