JP2731894B2 - Surface mold for molding concrete products and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface mold for molding a concrete product, which is used for a molding frame for molding a concrete product such as a retaining wall for civil engineering, and forms the surface of the concrete product, and a method for producing the same.

[0002]

2. Description of the Related Art Generally, as a concrete product, there is a so-called L-shaped retaining wall as shown in FIGS. 7 and 8, for example. This concrete product K is formed to have an L-shaped cross section with the surface wall 2 erected on one side edge of the base wall 1, and, for example, the base wall 1 is grounded and a large number of concrete products K are connected to the end faces 3 thereof. Join and build side by side. Then, for example, the base wall 1 is buried in alligator, and the soil buried in the surface wall 2 is closed and a building or the like can be constructed in the buried place. In recent years, a concrete product K in which various patterns other than a flat surface are formed on the surface 2a of the surface wall 2 has been used.

Conventionally, as shown in FIG. 8, as a surface mold 4 for forming a pattern of the surface 2a of the concrete product K, for example, a receiving portion 5a formed of a flat panel and a peripheral portion of the receiving portion 5a are provided. There is a holding member 5 integrally provided with a peripheral frame 5b to be provided, and a receiving member 5a of the holding member 5 is provided with a mold member 6 formed of rubber to form a surface of the concrete product K. The method of manufacturing the surface mold 4 is as follows.
As shown in FIG. 9, the holder 5 is arranged on the mold surface 10 a of the matrix 10 with the surface of the receiving portion 5 a facing each other. During this process, the rubber as the solidifiable material M is melted, poured, and solidified to form the mold member 6 for manufacture.

When the concrete product K is formed by using the surface mold 4, as shown in FIG. 8, the surface mold 4 is attached to the perforated projection 7 on the upper part of the peripheral frame 5b by a crane or the like. The hook is lifted, and this is positioned on the front surface of the support plate 13 of the molding frame 12.
The locking projections 14 provided on the back surface of the
To support the surface mold 4 on the support plate 9,
The support plate 9 is moved so that the molding surface 6a of the mold member 6 of the surface mold 4 is opposed to the lower mold 16, and the end face mold 17 is rotated to be attached to the lower mold 16. In this state, the fluid concrete is poured from above. The surface of the base wall 1 is poured and leveled with an iron or the like, cured for several hours, and then released to form a concrete product K. When molding a concrete product K having a different surface pattern, the surface mold 4 is lifted off by a crane or the like, and then a new surface mold 4 is lifted by a crane or the like and attached in the same manner as above, and the surface mold 4 is replaced. I am trying to do it.

[0005]

In the conventional surface mold 4 described above, the surface mold 4 is lifted by a crane or the like and is attached to and detached from the support plate 13 of the molding frame 12. If it is an object, its handling becomes complicated, and there is a demand to reduce the weight as much as possible. When manufacturing the surface mold 4, the receiving portion 5 of the holding body 5 is used.
The solidifying material M is poured into the space between the receiving portion 5a and the matrix 10 from the spout 5c provided in the mold member a. 6
However, there was also a problem that incompletely manufactured products were sometimes produced.

Accordingly, an object of the present invention is to reduce the weight of the surface mold and at the same time to ensure that the solidifying material can be poured uniformly between the receiving portion and the matrix when manufacturing the surface mold. In that

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a concrete product molding surface mold according to the present invention comprises a holding member having a flat receiving portion and a peripheral frame provided on a peripheral edge of the receiving portion. And a mold member made of a solidifying material that is poured in a flowing state into the front side of a receiving portion surrounded by a peripheral frame of the holding body and solidified to form a molding surface for molding a surface of a concrete product. In the concrete product molding surface mold, the receiving part of the holding body is vertically and horizontally connected to a bar-shaped beam member.
The solidification material is formed in a lattice shape, and the receiving portion has a cavity into which the solidifying material is poured in a flowing state.

Further, according to the method of manufacturing a surface mold for molding a concrete product of the present invention, a holder having a flat receiving portion and a peripheral frame provided on a peripheral portion of the receiving portion is surrounded by the peripheral frame of the holding member. The front surface of the receiving portion facing the mold surface of the matrix, and then a solidifying material is poured in a flowing state between the front surface of the receiving portion and the mold surface of the matrix. In a method for manufacturing a surface mold for concrete product molding in which a material is solidified to form a mold member having a molding surface for molding a surface of a concrete product, the receiving portion of the holding body is vertically and horizontally formed by a bar-shaped beam member.
When the solidifying material is poured in a fluidized state in a flowing state, the solidifying material is poured from a cavity of a receiving portion formed in a grid.

[0009]

According to this means, when manufacturing a surface mold for molding a concrete product, the front surface of the receiving portion surrounded by the peripheral frame of the holding body is opposed to the mold surface of the mother mold, and is then formed in a lattice shape. A solidifying material is poured from the formed cavity of the receiving portion, and then the solidifying material is solidified to form a mold member having a molding surface for molding the surface of the concrete product. In this case, since the cavity of the receiving portion formed in a lattice shape has a large opening on the back surface of the receiving portion, the solidifiable material is uniformly poured into every corner. Also, in the surface mold manufactured in this manner, the receiving portion of the holding body is formed in a lattice shape.
Since the weight is reduced, the weight can be reduced, the handling can be easily performed when assembling or removing the surface mold, and the working efficiency can be improved.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a concrete product forming surface mold according to an embodiment of the present invention; As shown in FIGS. 1, 2 and 7, the surface mold H according to this embodiment has a base wall 1 and a surface wall 2 as described above.
Is provided on a molding frame 12 for molding a concrete product K called an L-shaped retaining wall having an end face 3 to be joined to the other, and for molding the surface 2a of the surface wall 2 of the concrete product K.

As shown in FIGS. 1 to 5, in the surface type H according to the embodiment, reference numeral 20 denotes a holding body made of metal such as iron, the periphery of which is adapted to the outer shape of the surface 2a of the concrete product K. A rectangular receiving portion 21 formed in a rectangular shape;
And a peripheral frame 22 provided on a peripheral portion of the first frame. The receiving portion 21 of the holding body 20 is formed in a lattice shape by joining bar-shaped beam members 23 vertically and horizontally, and has a space 24 into which a solidifying material M made of resin concrete to be described later is poured. Specifically, as shown in FIG.
1 is L1 = 1000 mm long and L2 = 1700 wide.
For example, three beam members 23 each having a maximum width D = 50 mm or less are wound around the peripheral frame 22 at substantially equal intervals in the vertical direction and at substantially equal intervals in the horizontal direction.

Further, on the back surface of the beam member 23 of the receiving portion 21,
A plurality of hook-shaped locking projections 14 for supporting the surface mold H are provided on the molding frame 12 for molding the concrete product K, as described above. Further, a perforated projection 7 on which a hook such as a crane is hooked is provided on the upper part of the peripheral frame 22 of the surface mold H in the same manner as described above. Molding frame 12
As shown in FIG. 1, the molding frame 12
The surface mold H positioned on the front surface of the support plate 13 is supported by engaging the engagement protrusion 14 provided on the back surface of the receiving portion 21 with the engagement hole 15 of the support plate 13. Board 13
At the same time, the surface plate H
Is opposed to the lower mold 16, and the lower mold 1 is rotated by the rotation of the end face mold 17.
6, and in this state, the fluid concrete poured from above is formed.

Numeral 30 denotes a mold member made of a solidifiable material M, which is poured in a flowing state into the front side of a receiving portion 21 surrounded by a peripheral frame 22 of the holding body 20 and solidified to form the surface of a concrete product. Is what you do. This mold member 30
As will be described later, the receiving portion 21 facing the mold surface of the matrix 10
The solidifying material M is melted and poured between the matrix 10 and the matrix 10 to be solidified, thereby being attached to the receiving portion 21. Formed on the surface of the mold member 30 is a molding surface 31 molded by the matrix 10 and having a pattern formed on the surface 2a of the surface wall 2 of the concrete product K.

In the embodiment, a so-called resin concrete is used as the solidifying material M. Resin concrete is obtained by mixing inorganic aggregates such as gravel and sand and liquid resin together with fine powder such as calcium carbonate as a filler for the resin, and polymerizing the resin using a curing catalyst to form a cured product. What is formed. That is, resin concrete is formed of a composite material of a binder and an aggregate similarly to cement concrete, and among various so-called plastic concretes, as a binder, only synthetic resin is used instead of cement and water. Used to combine the aggregates. Therefore, unlike other plastic concretes such as polymer cement concrete in which cement contains a polymer such as rubber latex, it does not contain cement. The components are, for example, 5 to 20% by weight of resin as a binder, 60 to 90% by weight of aggregate, and 5 to 2% of other materials.
The ratio is about 0% by weight.

As a binder for the resin concrete, resins such as polyester, epoxy, furan, phenol, polyurethane, and acrylic are used. Of these, resin concrete using polyester as a binder is commonly called "polycon" and is common as resin concrete. FIG. 6 shows the physical properties of the resin concrete according to these binders. In general, since the tensile strength and the bending strength are particularly large among the physical strengths, the durability is superior to that of the cement concrete. In addition, it has excellent chemical resistance and high abrasion resistance. Further, it has characteristics such as water impermeability.

As the aggregate, sand, gravel, crushed stone, and other similar materials are used. For example, fine aggregate (all passing through a 10 mm sieve and passing 85% or more by weight through a 5 mm sieve) and coarse aggregates are used. Aggregates (aggregates that remain at 85% or more by weight in a 5 mm sieve) are appropriately mixed and used. The water content in the aggregate is preferably as low as possible, and the water content of the aggregate is preferably low.

In addition, various kinds of particulate fillers are mixed for the purpose of increasing the amount of the resin and improving the moldability, and at the same time, improving the wear resistance and the performance such as the reduction of shrinkage. As the filler, for example, an appropriate material such as an inorganic material such as calcium carbonate or aluminum, or an organic material such as wood flour or fiber is used. In addition, repellents, antioxidants, ultraviolet absorbers, antistatic agents, lubricants, coloring agents,
Various additives such as a defoaming agent, a viscosity adjusting agent, and a release agent are appropriately added. Further, as shown in FIG. 4, a reinforcing member 11 made of a steel material assembled in a lattice shape is embedded in the resin concrete.

Next, steps for manufacturing the surface mold H according to this embodiment will be described. As shown in FIG. 5, a matrix 10 in which a pattern to be applied to the surface 2a of the surface wall 2 of the concrete product K is formed on the mold surface 10a is prepared in advance. The periphery of the matrix 10 is formed in a flat surface so that the tip of the peripheral frame 22 of the holding body 20 abuts without any gap. And FIG.
As shown in FIG. 5 and FIG. 5, a reinforcing member 11 in which wires are assembled in a grid shape is installed above the matrix 10, and a peripheral frame 22 of the holding body 20 is brought into close contact with the periphery of the matrix 10, and The mold 10 faces the mold surface 10a.

Further, a fluid resin concrete is prepared as the solidifying material M. In this case, for example, in the case of polyester resin concrete, for example, a mixer having no water adhered to the inner surface of the container is prepared. 8 in the weight of resin concrete kneaded in the container
Add 0% to 60% dry sand. Kneaded in another container 1 weight of resin concrete
0% to 20% of the resin is weighed, and BPO (benzoyl peroxide) as a curing agent is added to the resin in an amount of 1% to
Add 3% and mix well. Immediately before use, 0.1% to 0.3% of the resin weight is added with dimethylaniline for shortening the time of room temperature curing, and the mixture is thoroughly stirred. Immediately add the same weight of calcium carbonate as the resin and stir well. This mixed resin is added to a container of a mixer and stirred well. Thus, a fluid resin concrete is prepared.

As shown in FIG. 4, the flowing resin concrete is poured from a space 24 in a receiving portion 21 formed in a lattice. At this time, it is preferable that vibration is applied to the fluid resin concrete by a vibrator to spread the concrete.
Thereby, the fluid resin concrete is poured between the receiving portion 21 and the matrix 10. In this case, since the cavity 24 is poured from the cavity 24 of the receiving portion 21, the cavity 24 is greatly opened on the back surface of the receiving portion 21. Are uniformly poured into the mold member 30 to prevent the mold member 30 from being incompletely manufactured due to a gap or the like. In particular, the fluid resin concrete has a high viscosity and is inferior in fluidity because it is a concrete containing a large amount of aggregate.
Since it flows from the first empty space 24, it can be surely spread to every corner of the matrix 10. Thereafter, the surface of the liquid resin concrete exposed in the space 24 of the receiving portion 21 is flattened with an iron or the like, cured for several hours, and then released from the matrix 10.
Thereby, the surface mold H is manufactured as shown in FIG.

When the concrete product K is formed by using the surface mold H, as shown in FIGS. 1 and 2, the surface mold H is lifted by a crane or the like in the molding frame 12 to support the molding frame 12. The front mold H is supported on the support plate 13 by being positioned on the front surface of the plate 13 and engaging the locking projection 14 provided on the back surface of the receiving portion 21 with the locking hole 15 of the support plate 13. In this case, since the receiving portions 21 of the holder 20 of the surface type H are formed in a lattice shape, the weight is reduced and the weight is reduced, so that the surface type H can be easily handled,
Therefore, the efficiency of the mold assembly operation is improved.

Next, the support plate 13 is moved so that the molding surface of the mold member 30 of the surface mold H is opposed to the lower mold 16, and the end face mold 17 is rotated and attached to the lower mold 16. Fluid concrete is poured from above, and a rod-shaped vibrator (not shown) is inserted into the fluid concrete to apply vibration, and bubbles are diffused from the fluid concrete to make the density uniform. In this case, when the coagulable material M is rubber, it is difficult for air bubbles to escape due to the function of absorbing the vibration of the vibrator and canceling the vibration. However, since the coagulable material M is resin concrete, Due to the rigidity, the vibration of the vibrator is transmitted to the fluidized concrete well, so that the bubbles of the fluidized concrete are easily released, and the density of the concrete product K can be surely made uniform. Then, the surface of the base wall 1 is flattened with a trowel or the like, cured for several hours, and then released to form a concrete product K. In this way, a concrete product having the same shape is repeatedly formed using one surface mold H.

In this case, since the receiving portion 21 is formed in a lattice shape, the bonding area of the mold member 30 to the receiving portion 21 is smaller than that of the panel. Therefore, when the mold member 30 is made of rubber, the strength is reduced. However, in many cases, the mold member 30 sticks to the concrete product side at the time of mold release and comes off the holding body 20.
Since it is made of resin concrete, it has strength, so that it is prevented from sticking to the concrete product side at the time of mold release and coming off the holding body 20, and has extremely high durability.

When the mold member 30 is made of rubber, the rubber has a high water absorption, so that it is swollen by repeated molding, and the life of the mold is short.
Since is made of resin concrete, it has extremely low water absorption, so that it does not become durable and cannot be used, and the durability is improved in this respect as well.

Further, when the mold member 30 is made of rubber,
Rubber is easily worn due to its low surface hardness, and the molding surface is easily broken by repeated molding. On the other hand, since the mold member 30 is formed of resin concrete, the abrasion resistance is high, For this reason, a situation in which the molding surface collapses is prevented, and the durability is also improved in this respect.

When molding a concrete product K having a different surface pattern, the surface mold H is lifted off by a crane or the like, and then a new surface mold H is lifted by a crane or the like and mounted in the same manner as described above. H is to be replaced. Also in this case, the receiving part 21 of the holding part of the surface mold H is
Since it is formed in the shape of a lattice, the weight is reduced and the weight is reduced, so that the handling of the surface mold H is easily performed, and therefore, the efficiency of attaching and detaching the surface mold H is improved.

The components and the mixing ratio of the resin concrete are not limited to those described above, but may be variously adjusted. Further, the solidifiable material M is not limited to the resin concrete described above, and any material such as rubber may be used and may be appropriately changed.
Further, in the above embodiment, the present invention has been described as applied to the surface mold H for molding the surface of the retaining wall as the concrete product K, but the present invention is not necessarily limited to this. Needless to say, the present invention may be applied to a surface mold for molding various concrete products.

[0028]

As described above, according to the surface mold for molding a concrete product of the present invention and the method of manufacturing the same, the receiving portion of the holding body is formed in a lattice shape, so that the weight is reduced, so that the weight can be reduced. I was able to plan. As a result, the surface type can be easily handled because of the reduced weight, and the surface type can be easily attached and removed.
Work efficiency can be improved.

Further, when manufacturing the surface mold, the solidifying material can be poured from the cavity of the receiving portion formed in a lattice shape, and the solidifying material can be poured between the receiving portion and the matrix. Since the cavity of the receiving part has a large opening on the back surface of the receiving part, the solidifying material can be poured evenly to all corners, as compared with the conventional way of pouring from the spout, It is possible to prevent a situation in which the mold member is incompletely manufactured due to a gap or the like, thereby greatly improving the quality of the surface mold. Particularly, when the coagulable material has a high viscosity and is inferior in fluidity, it is extremely effective. Also, since the solidifying material is poured from the space of the receiving portion, the solidifying material can be poured at one time,
Accordingly, there is an effect that the workability of manufacturing the surface mold can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a concrete product molding surface mold according to an embodiment of the present invention, together with a molding frame in which the same is used.

FIG. 2 is a perspective view showing a concrete product molding surface mold according to an embodiment of the present invention, together with a molding frame in which it is used.

FIG. 3 is a rear perspective view showing a surface mold for molding a concrete product according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a state at the time of manufacturing the concrete product molding surface mold according to the example.

FIG. 5 is a cross-sectional view illustrating a method of manufacturing a surface mold for molding a concrete product according to an example.

FIG. 6 is a table showing characteristics of resin concrete, which is a solidifying material of a surface type for molding a concrete product according to an example of the present invention, in comparison with cement concrete.

FIG. 7 is a diagram showing a construction example of a concrete product molded by the surface mold according to the embodiment.

FIG. 8 is a perspective view showing a conventional surface mold for molding a concrete product together with a molding frame in which it is used.

FIG. 9 is a cross-sectional view illustrating a method for manufacturing a conventional surface mold for molding a concrete product.

[Explanation of symbols]

 K Concrete product H Surface type M Solidification material 1 Base wall 2 Surface wall 2a Surface 3 End surface 4 Surface type 5 Holder 5a Receiving part 5b Perimeter frame 5c Spout 6 Mold member 10 Master mold 10a Mold surface 12 Mold frame 13 Support plate DESCRIPTION OF SYMBOLS 14 Locking projection 15 Locking hole 16 Lower mold 17 End face mold 20 Holder 21 Receiver 22 Peripheral frame 23 Beam member 24 Void 30 Mold member 31 Molding surface

Claims (2)

(57) [Claims] 1. A holder having a flat receiving portion and a peripheral frame provided at a peripheral portion of the receiving portion, and is poured in a flowing state into a front side of the receiving portion surrounded by the peripheral frame of the holding member. In a concrete product molding surface mold having a mold member made of a solidifiable material forming a molding surface that is solidified to form a surface of the concrete product, the receiving portion of the holding body is formed in a rod-like shape.
A surface mold for molding concrete products, characterized in that the beam members are joined vertically and horizontally to form a lattice, and the receiving portion has a cavity into which the solidifying material is poured in a flowing state. 2. A holding body having a flat receiving portion and a peripheral frame provided on a peripheral portion of the receiving portion. Facing, and then, between the front surface of the receiving portion and the mold surface of the matrix, a solidifying material is poured in a fluid state, and then the solidifying material is solidified to form a surface of a concrete product. in concrete product manufacturing method of the molding surface mold for forming the mold member having the joining receiving of the holding member, the rod-shaped beam members vertically and horizontally
To form a grid pattern, when pouring the solidifying material in a fluidized state, prepared from a cavity of the receiving part which is formed in a lattice-like concrete products forming surfaces form characterized in that pouring the solidifying material Method.