JPH06190816A - Manufacture of sculpture mold and sculpture mold - Google Patents

Abstract

PURPOSE:To obtain a forming mold, with which a sculpture coinciding more exactly with the image intended by a sculptor can be formed, by a method wherein a male mold base having the indentations same as the shape and dimensions as those of the matter going to be formed is worked so as to expand plastic over the indented face and fixed to each other and finally the male base is separated from the plastic. CONSTITUTION:A male mold base 1, which is made of polystyrene foam or the like, is formed so as to have the indentations 10 same as the shape and dimensions as those of the matter going to be formed on one surface by working. On the indented face 10 of the male mold base 1, rubber or synthetic resin is applied so as to form surface layer 20. The surface layer 20 is surrounded by rigid plastic foams 22 and 23 under the condition that the predetermined gap is left between the surface layer and the foams so as to pour polyurethane 21 or the like in the gap. After that, by removing the plastic foam 23 and the male mold base 1, a forming mold 2 consisting of the surface layer 20, the rigid polyurethane foam 21 and the plastic foam 22 is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sculpture used for forming a sculpture-like pattern on the surface of a concrete structure, PC, GRC or the like, or for producing a three-dimensional image of a person, an animal or the like. The present invention relates to a molding die manufacturing method and an engraving molding die. In most cases, such sculpture-like patterns and three-dimensional images are usually produced as a single item on the road, at a site such as a park or a station, according to an order.

[0002]

2. Description of the Related Art Conventionally, in order to manufacture a molding die of this kind, as shown in, for example, Japanese Patent Publication Nos. 64-7847, 64-7565 and 62-9439, hard foaming is used. A female mold is manufactured by forming irregularities on the surface of a plastic material by means of heating and melting, a steel wire brush, and a sandpaper for finishing, which is the reverse of the sculpture to be produced. It was The mold produced in this way is fixed to a temporary frame so that the uneven surface is on the inside, and the inside is filled with raw concrete, gypsum-based hardening material, synthetic resin-based hardening material, or a hardening material that is a mixture of these. After the curing, the mold is released from the mold to form an engraved pattern or a three-dimensional image.

[0003]

According to the conventional manufacturing method, since the surface of the foamed plastic material has irregularities opposite to those to be produced, an engraving is produced using the mold. In that case, it is not uncommon for an image to be created that is different from the one the creator had envisioned. Also,
In order to produce a product as envisioned, it takes a lot of time because it is necessary to accurately measure the depth of the recess and the height of the protrusion when processing the molding die, and it takes considerable skill. Without it, it was difficult to process the concavo-convex opposite to the actual one. Furthermore, it is not possible to show the same thing as the creator envisioned to the orderer before production, and therefore it is not possible to hear the orderer's opinion about the concept of the creator before production. Further, since the molding die manufactured as described above does not have a protected molding surface, there is a drawback that the molding surface is easily damaged during transportation to the production site, on-site installation or other handling, or even after the site is installed. It was

An object of the present invention is to provide a method of manufacturing a sculpture molding die and a sculpture molding die which can solve the above problems.

[0005]

In order to achieve the above-mentioned object, a first method of manufacturing a sculpture molding die according to the present invention has unevenness of the same shape and size as the whole or a part of the object to be produced. Is processed to fix the plastic mold on the surface of the irregularities while foaming the plastic to produce a molding die made of a hard plastic foam, and the male base is released from the molding die. It is configured to allow.

In order to achieve the above-mentioned object, a second method for manufacturing an engraving molding die according to the present invention is a male base having an unevenness of the same shape and size as the whole or a part of the object to be produced. Is processed to form a surface layer of rubber or synthetic resin on the surface of the irregularities, and plastic is fixed on the surface layer while foaming, to produce a molding die made of a hard plastic foam having the surface layer. The male base is separated from the molding die.

In each of the above-mentioned manufacturing methods, the male base may be wood, gypsum, oil soil, aqueous clay or the like, but it is preferable to use a hard plastic foam such as foam styrol. By additionally using oil soil or water-based clay to correct the irregularities, a male base having more precise fine irregularities can be processed. When processing irregularities on a male base made of a hard plastic foam, for example, heating and melting with a nichrome wire or the like, cutting with a blade, means such as a steel wire brush or a sand paper, or independently, or Two or more of these means are used.

After the male base having irregularities is processed, before the plastic is foamed and fixed on the irregular surface, or before the surface layer is formed on the irregular surface, an appropriate surface is formed on the irregular surface. The release agent can be applied or sprayed.

The kind of the plastic to be foamed as described above is not particularly limited, but it is preferable to use polyurethane or the like which is suitable for in-situ foaming at a molding die work site and which easily enters a narrow gap in a foamed state. Further, when polyurethane is used as the plastic to be foamed and plastic foam is used as the male base, the latter is preferably a plastic foam other than polyurethane, such as foam styrene.

When the plastic is fixed on the irregular surface of the male base while foaming, the irregular surface of the male base is predetermined by a plate or a hard plastic foam according to a usual method. , Leaving a gap between them, and providing an inlet and a plurality of through holes in the plate or plastic foam,
The plastic is injected into the gap through the inlet while foaming.

To form a surface layer of rubber or synthetic resin on the uneven surface, a liquid preparation is applied or coated on the uneven surface. When a synthetic resin is used, a polyurethane elastomer is used. It is preferable to keep the rubber-like elasticity in the cured state. If the object to be produced is large or has a stereoscopic image, when processing a male base having irregularities, the object to be produced is divided into two or more male bases. Process the fabric.

The engraving mold according to the present invention comprises a hard plastic foam having unevenness on one surface and a surface layer of rubber or synthetic resin fixed on the uneven surface. The plastic foam is composed of a urethane resin foam having irregularities on one surface and two or more other plastic foams fixed on the opposite side of the urethane resin foam from the irregular surface. I like it.

[0013]

According to each of the methods for manufacturing the engraving molding die according to the present invention, the unevenness of the processed male base is the molding die made of the hard plastic foam, or the plastic foam and the rubber or the synthetic resin. It is accurately transferred to the molding die consisting of the surface layer. Therefore, a molding die is produced that can produce a sculpture that more accurately matches what the producer has imagined.

According to each of the above-described manufacturing methods, after the male base having irregularities is processed and before the plastic is foam-fixed, it is almost the same as the sculpture envisioned by the producer and will be produced from now on. You can show your favorite items to the orderer. At this time, when the male base is in a divided state, the projections and depressions of each base are joined so as to form the entire image. At this stage, the creator's concept can also be modified, so by listening to the orderer's impressions and opinions regarding the product's concept and correcting the irregularities, the sculpture that more closely matches the orderer's wishes. Can be produced.

Further, when processing a male base having irregularities, since the envisioned object is produced as it is, that is, not on the opposite irregularities, but is produced in a live-action manner, the molding die can be manufactured in a very short time, and the skill Even those who do not can produce more accurate molds.

According to the second method for manufacturing an engraving mold according to the present invention, the hard plastic foam body having irregularities on one surface and the surface layer of rubber or synthetic resin fixed on the surface of the irregularities. A molded article molding die is manufactured.
Therefore, in this molding die, the uneven surface becomes very smooth by the surface layer and is protected by this surface layer, so that the uneven surface after transportation to the production site or other handling and fixing to the mold etc. Hard to hurt.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a method for manufacturing a sculpture molding die according to the present invention will be described below with reference to the drawings. 1 is a sectional view for explaining an example of a manufacturing method according to the present invention, FIG. 2 is a sectional view showing a state in which a molding die manufactured in the embodiment of FIG. 1 is fixed to a mold, and FIG. 3 is a manufacturing method of the present invention. FIG. 4 is a cross-sectional view showing a state in which a molding die for a stereoscopic image manufactured by the method is combined, FIG. FIG. 9 is a cross-sectional view for explaining another embodiment of the manufacturing method according to the present invention.

In FIG. 1, reference numeral 1 denotes a male base on which one surface is formed with an unevenness 10 of the same shape and size as the object to be produced, and the male base 1 has a foam styrofoam. Are used. In order to form the unevenness 10 on one surface of the foamed styrol, rough unevenness is processed while heating and melting the surface of the material with a nichrome wire or the like, and this is sandpapered.
Finish with a par. Further, the unevenness 10 can be corrected by using oil soil, water-based clay or the like. In addition to this, a steel wire brush, a blade or the like can be used for processing the unevenness 10.

After processing the male base 1 having the unevenness 10 on one surface as described above, the surface layer 20 is formed by coating or spraying a liquid of rubber or synthetic resin on the surface of the unevenness 10. In this example, a polyurethane elastomer (for example, floor coating product of Toyo Tire & Rubber Co., Ltd., trade name "Soflan Lec") is used by using a spray machine (not shown).
The surface layer 20 is formed by spraying to a thickness of about 0.5 to 1 mm. Although this polyurethane elastomer has a fast curing property, when a polyurethane elastomer or other synthetic rubber that does not have a fast curing property is used, a liquid material is applied to the uneven surface to form the surface layer 20.

The surface layer 20 having the irregularities 10 as described above.
After the surface layer 20 is hardened, the male base 1 is formed.
A hard plastic foam 22 such as foam styrene is provided so as to surround the surface layer 20 on which the irregularities 10 are formed with a predetermined gap left, and the plastic foam 22 has an injection port 2a and an appropriate number. Is formed into the space surrounded by the surface of the surface layer 20 and the plastic foam 22, while the polyurethane is injected from the injection port 2a while the polyurethane is being foamed. A mold 2 which is fixed and is composed of a surface layer 20, a hard polyurethane foam 21, and a hard plastic foam 22.
To manufacture.

After that, the plastic foam 23 is removed, and at the time of the above-mentioned polyurethane injection, the vent hole 2 is formed.
The protruding portion 2c bulging from b is cut off, and the male base 1 is released from the molding die 2. Since the polyurethane foam 21 and the surface layer 20 are made of the same material, the surface layer 20 is more firmly fixed to the polyurethane foam 21, and when the male base 1 is peeled off from the molding die 2, The surface layer 20 does not separate from the male base 1. A release agent may be applied or sprayed on the surface of the unevenness 10 of the male base 1 before forming the surface layer 20.

Mold 2 produced as in the previous embodiment.
2 is inserted into an insertion portion 30 formed on one of the concrete molds 3 and 3 in a state where the surface layer 20 having an uneven surface is inward as shown in FIG. Fix it to the frame 3, fill the inside a with fresh concrete, and
When the mold 2 is released from the mold after the mold is cured, an engraving pattern is produced on the concrete wall surface. In many cases, reinforcing bars (not shown), expanded metal, etc. are arranged inside the mold 3 (a). Further, when the sculpture pattern is produced on the already constructed wall surface, only the mold 3 on one side is used.

According to the manufacturing method of the above-described embodiment, the unevenness 10 having the same shape and size as that of the product to be manufactured is formed to process the male base 1. Is much easier and more efficient than forming. Further, the unevenness 10 of the male base 1 is accurately transferred to the molding die 2. Therefore, it is possible to manufacture a more faithful mold in a shorter period of time, and even for a person who is not skilled in the art, a product designed by the creator. Since the unevenness 10 of the male base 1 can be easily processed by modifying, for example, the same as the creator's conception, the male base 1 is shown to the orderer in advance, and the impression of the orderer Molds can be manufactured so that sculptures that incorporate opinions can be produced.

In the molding die 2 manufactured as described above, since the surface layer 20 is formed on the uneven molding surface, the molding surface is protected by this surface layer 20, and the mold as shown in FIG. There is no damage or deformation during the frame construction or even after the mold construction, and the mold 2 is more easily released from the mold.

In the case of producing a three-dimensional image, as shown in FIG. 3, for example, the molding dies 2 and 2 divided into a plurality of parts are manufactured by the same method as described above, and the surface layer 2 which is an uneven surface is manufactured.
With the temporary frame 4, the molding die 2,
A solid image is formed by combining the two, filling the hollow interior b with a raw concrete or other hardening material, and removing the molds 2, 2 after hardening. In the example of FIG. 3, the hollow inside b can be laid out, and a hollow inner frame (not shown) is installed in the inside b, and a hardening material is placed in the gap between the inner frame and the molding dies 2 and 2. Fill it to create a hollow solid image. When the stereoscopic image to be produced is large, the molding die 2 is manufactured in a state of being divided into three or more.

When a sculpture pattern is to be produced over a wide range on a wall surface or the like, a mold is divided into a plurality of planes so that the concavo-convex patterns are continuous with each other, and these molds are used in combination. Further, the molding die 2 manufactured by this embodiment can be used in combination with the molding die 5 manufactured by another method as shown in FIG.

FIG. 5 shows the male base 1 on the side of the unevenness 10,
A hard plastic foam body 2 surrounded by a predetermined gap c
2 and 23 are provided, the grooves 2d are formed outward at predetermined intervals in the plastic foam 22 facing the surface layer 20 on the surface of the unevenness 10 at predetermined intervals. The grooves 2d may be formed so as to intersect with each other. When such a groove 2d is formed in the foam body 22, when a sculpture is produced by using the manufactured mold and the mold is demolded and then crushed into small pieces for easy disposal. There is an advantage that the molding die can be easily crushed from the groove 2d portion manually.

In the above embodiment, the irregularities 10 of the male base 1 are used.
Although only the surface layer 20 is formed on the surface of the above, the surface layer 20 may be omitted, and the molding die made of a hard plastic foam may be manufactured by directly foaming and fixing the plastic on the surface of the unevenness 10. it can. In this case, it is desirable that the plastic is foamed and fixed after the mold release agent is applied or sprayed on the surface of the unevenness 10 so that the male base is easily released from the mold.

The manufacturing method of the molding die and the molding die according to the present invention are not limited to the above-mentioned embodiments, and within the scope of the claims, a non-main part may be changed or a part may be equivalent. It also includes the case of replacing with or adding other elements.

[0030]

According to the molding die manufacturing method of the present invention,
A mold is produced that allows the creator to create a sculpture that more closely matches what the artist imagines. At the stage of processing the male base, the creator can show the customer almost the same sculpture as the sculpture to be created and envisioned. Also, at this stage, the irregularities of the male base can be corrected, so by listening to the customer's impressions and opinions about the product that the creator envisioned, a sculpture that better suits the customer's wishes can be created. It is possible to manufacture molds that are easy to produce. Also, when processing a male base having irregularities,
Since the envisioned object is produced as it is, that is, it is not photographed on the contrary, but on a live-action basis, the molding die can be manufactured in a very short time, and even an unskilled person can manufacture a more accurate molding die. Further, according to the molding die of the present invention, since the surface layer is formed on the molding surface, the molding surface is damaged or destroyed during the handling before the installation of the engraving production site or after the installation. Less likely to

[Brief description of drawings]

FIG. 1 is a sectional view for explaining an example of a manufacturing method according to the present invention.

FIG. 2 is a cross-sectional view of the molding die manufactured in the embodiment of FIG. 1 fixed to a mold.

FIG. 3 is a plan cross-sectional view of a state in which molding dies for stereoscopic images manufactured by the manufacturing method of the present invention are combined.

FIG. 4 is a cross-sectional view of a molding die manufactured according to the embodiment of FIG. 1 in a state of being combined with another molding die.

FIG. 5 is a cross-sectional view for explaining another embodiment of the manufacturing method according to the present invention.

[Explanation of symbols]

 1 Male Base 10 Unevenness 2, 5 Mold 20 Surface Layer 21 Hard Polyurethane Foam 22, 23 Hard Plastic Foam 2a Injection Port 2b Vent Hole 2c Projection 2d Groove 3 Form 30 Insert 4 Temporary Frame a Inside of formwork b Hollow inside c Gap

Claims (6)

[Claims] 1. A male base having an unevenness of the same shape and size as the whole or a part of an object to be produced is processed,
By fixing the plastic on the uneven surface while foaming, a mold made of a hard plastic foam is manufactured,
A method for producing an engraving molding die, characterized in that the male base is released from the molding die. 2. A male base having an unevenness of the same shape and size as the whole or a part of an object to be produced is processed,
A rubber or synthetic resin surface layer is formed on the surface of the irregularities, and plastic is foamed and fixed on the surface layer to produce a molding die made of a hard plastic foam having the surface layer. A method for producing a sculpture molding die, which comprises releasing a male base. 3. The method for manufacturing an engraving mold according to claim 1, wherein the plastic is polyurethane. 4. The method for manufacturing an engraving mold according to claim 2, wherein the material of the surface layer is polyurethane elastomer. 5. A molding die for molding, comprising a hard plastic foam having unevenness on one surface, and a surface layer of rubber or synthetic resin fixed on the uneven surface. 6. A urethane resin foam having the hard plastic foam having unevenness on one surface, and another plastic foam fixed to the surface of the urethane resin foam opposite to the uneven surface. The engraving mold according to claim 5, comprising: