JP2000025022A - Concrete block-forming formwork - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete block-forming formwork in which in the case of forming a concrete block by repeatedly using the formwork, work for reuse such as cleaning of face plates constituting outer frames and removal of a release agent is efficiently performed. SOLUTION: The concrete block-forming formwork 17 has such structure that a cylindrical inner frame 4 is arranged in the center on a bottom plate 3 and four face plates 6 for an outer frame are arranged so as to form a square cylindrical outer frame 5 on the four sides thereof and also sidewise cylindrical parts 6a having a shape in which the tip face comes into contact with the outer peripheral face of the cylindrical inner frame 4 without an opening, are fitted to the inner faces of the face plates 6 of the respective outer frames. The face plates 6 of the outer frames are supported by vertical shafts 15 becoming connecting nodes on the outsides of pantograph mechanisms 12 and are provided so as to be moved in the inner and outer directions of the formwork 17 and also rotatably provided so that the front and the back are turned over in the outside moving positions. In the case of releasing the formwork 17, the face plates 6 of the outer frames are moved on the outsides by human power and are rotated at 180 deg. in the outside moving positions to turn over the front and the rear. Work such as cleaning of the face plates 6 of the outer frames and removal of a release againt is made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete having a substantially cylindrical outer frame formed by a plurality of outer frame face plates erected on a bottom plate, such as a mold for molding a hexahedral concrete block. The present invention relates to a block mold.

[0002]

2. Description of the Related Art For example, as shown in FIG. 9, when the inside of a hexahedron is hollowed out in a cylindrical shape to form a hollow hexahedral concrete block 1 having a circular opening 1a on each side, as shown in FIG. A cylindrical inner frame 4 is arranged at the center on the bottom plate 3, and a square cylindrical outer frame 5 is formed on each side thereof.
And the outer frame face plates 6
A concrete block molding form (hereinafter simply referred to as a form) 7 having a structure in which a horizontal cylindrical portion 6a having a shape such that a front end surface thereof comes into close contact with the outer peripheral surface of the cylindrical inner frame 4 without any clearance is used. . In addition, the adjacent outer frame face plate 6
Are connected to each other by a fastener (not shown). Then, when concrete is poured into the formwork 7 from above, the cylindrical inner frame 4 and the four horizontal cylindrical portions 6a form a hollow portion hollowed out in a cylindrical shape inside the hexahedron. The concrete block 1 shown is formed.

The above concrete block 1 is usually formed at a factory. In this case, in order to cope with mass production,
A number of forms 7 are arranged side by side in the factory, "and concrete is injected. Therefore, the space between the mold frames 7 cannot be made too wide, and therefore, when the outer frame face plate 6 is removed after curing, there is no space for the detached outer frame face plate 6 to be laid on its side. Therefore, the outer frame face plate 6 is removed.
Will be moved outside the formwork with the
Conventionally, for example, a threaded bar provided in the base in and out of the mold is screwed into a nut fixed to the outer frame face plate 6, and the screw bar is turned to move the outer frame face 6 in and out of the mold. And so on.

[0004] Since this concrete block is lightweight and has high porosity while having the required strength,
It is suitable to be applied to a lightweight embankment method of embankment for expanding roads on soft ground, and an underwater embankment method of embankment without hampering the storage capacity of a reservoir or a flood control pond or the like to secure a land. .

[0005]

When a concrete block 1 is produced at a factory using the above-mentioned formwork 7, the formwork 1
Is used repeatedly, so that each time molding is performed, an operation for cleaning the inner surface of each outer frame face plate 6 and reusing such as applying a release agent is required. However, since each outer frame face plate 6 is large and heavy, it is not easy to clean and apply a release agent.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when a concrete block is formed by repeatedly using a formwork, cleaning of an outer frame face plate constituting the outer frame, reuse of a release agent, and the like are performed. To provide a concrete block forming formwork that can easily perform the work for the concrete block. ,

[0007]

According to the present invention, there is provided a concrete block forming mold having a substantially cylindrical outer frame formed by a plurality of outer frame face plates erected on a bottom plate. At least one of the outer frame face plates is provided so as to be movable inward and outward of the formwork and rotatable at the outward movement position so that the front and back are reversed.

[0008] A second aspect of the present invention is characterized in that the concrete block molding form of the first aspect is provided with irregularities for the form surface on both surfaces of the outer frame face plate.

According to a third aspect of the present invention, in the concrete block forming form of the first aspect, a cylindrical inner frame is disposed inside the outer frame.

According to a fourth aspect of the present invention, in the concrete block forming form according to the third aspect, a projection for forming a hollow portion is provided on the inner surface of the outer frame face plate so as to contact the outer peripheral surface of the inner frame.

A fifth aspect of the present invention is characterized in that the outer frame face plate of the concrete block forming form of the first aspect is provided so as to be able to be inserted and removed upward.

According to a sixth aspect of the present invention, a cylindrical inner frame is disposed substantially at the center on the bottom plate, and four outer frame face plates are disposed so as to form a quadrangular cylindrical outer frame on all sides thereof. On the inner surface of the face plate, a hollow hexahedron-shaped concrete block having a structure in which a laterally-facing cylindrical portion whose tip end surface is in close contact with the outer peripheral surface of the cylindrical inner frame is attached, and an opening is provided on each surface of the hexahedron. A concrete block molding form to be molded, wherein the outer frame face plate is supported so as to be movable inward and outward of the form, and rotatably so that the front and back are reversed at an outward movement position. A face plate support mechanism is provided.

According to a seventh aspect of the present invention, in the concrete block forming form of the sixth aspect, as means for supporting the outer frame face plate so as to be movable inward and outward of the form, the four links are formed in a substantially rhombic shape in a substantially horizontal plane. It is characterized by having a pantograph mechanism that is configured by being connected.

According to an eighth aspect of the present invention, in the concrete block forming form of the seventh aspect, the outer frame face plate is attached to a vertical shaft constituting a connecting node located outside the four links in the pantograph mechanism. And

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIGS. This embodiment is a concrete block forming form for forming the concrete block 1 shown in FIG. FIG. 1 is a partially cutaway perspective view of a concrete block forming formwork (hereinafter, simply referred to as a formwork) 17 of the embodiment, FIG. 2 is a plan view of the formwork, and FIG. FIG. 4 is a front view of FIG. 3, and FIG. 5 is a sectional view taken along line AA of FIG. As shown in these figures, this mold 17 has four outer frame face plates 6 arranged such that a cylindrical inner frame 4 is arranged at the center on the bottom plate 3 and a rectangular cylindrical outer frame 5 is formed on each side. And a structure in which a laterally-facing cylindrical portion (that is, irregularities for the mold surface) 6 a having a tip end surface in contact with the outer peripheral surface of the cylindrical inner frame 4 without any clearance is attached to the inner surface of each outer frame face plate 6. Having. The bottom plate 3 is fixed on a rectangular base 10 provided on a base 9.

The above range is the same as the conventional example,
In the present invention, for example, in the case of the embodiment, each of the four outer frame face plates 6
Can be moved in and out of the mold 17 (front and rear directions from the four sides toward the center, respectively), and at the outward movement position,
Provided rotatably so that the front and back are reversed.

As a means for supporting the outer frame face plate 6 so as to be movable in and out of the mold frame 7, in this embodiment, a pantograph mechanism 12 constituted by connecting four links 11 in a substantially rhombic shape in a horizontal plane is used. Provided. As shown in FIGS. 4 and 5, two pantograph mechanisms 12 of the embodiment are provided on the base 9 as connection joints (connection shafts) 13 having fixed positions for stable operation. However, this fixed connecting node may be one (that is, a four-node link having a complete diamond shape). Further, the fixed connection node 13 is held on a side surface of the rectangular base 10 by a holding bracket 14.

The 4 in the pantograph mechanism 12
The outer frame face plate 6 is attached to a vertical shaft 15 constituting a connection node located on the outermost side of the book link 11 so as to be rotatable by 180 ° so that the front and back are reversed. Further, in this embodiment, the outer frame face plate 6 can be inserted and removed vertically with respect to the vertical shaft 15. Although not shown, a lock mechanism is provided to prevent the outer frame face plate 6 from rotating with respect to the vertical shaft 15 except when necessary. Further, a lock mechanism is provided to prevent the angle of the link 11 from changing when the pantograph mechanism 12 is opened, that is, to prevent the outer frame face plate 6 from moving unnecessarily.

Although the cylindrical inner frame 4 is shown as a single cylinder in the figure, it is actually divided into a plurality of pieces and connected to each other by hinges so that they can be expanded and contracted.
It has a structure that can be easily removed. In addition, a cover is provided on the upper part of the cylindrical inner frame 4 so as not to enter the cylinder when concrete is poured, but is not shown.

When the concrete block 1 is formed at the factory using the above-mentioned formwork 17, first, the cylindrical inner frame 4 is arranged at the center of the bottom plate 3. Next, when the four outer frame face plates 6 are respectively moved inward by human power, the tips of the laterally oriented cylindrical portions 6a attached to the inner surfaces of the respective outer frame face plates 6 contact the outer peripheral surface of the cylindrical inner frame 4 without gaps. Then, the state is set as shown in FIG. Next, the edges of the adjacent outer frame face plates 6 are joined together by a fastener (not shown). Next, a lid is placed on the upper part of the cylindrical inner frame 4 and concrete is poured into the mold 7.

After the concrete is cured, it is released from the mold.
After the unillustrated fastener is removed and the connection between the adjacent outer frame face plates 6 is released, the four outer frame face plates 6 are moved outward by human power. At this time, each outer frame face plate 6 is moved in parallel and separated by the pantograph mechanism 12. 3 and FIG.
This shows a state in which only one outer frame face plate 6 has been moved outward. After moving the four outer frame face plates 6 to the outward movement positions, the central cylindrical inner frame 4 is removed. The cylindrical inner frame 4 has an expanding / contracting structure as described above, and can be easily removed by contracting inward. Next, the formed concrete block is suspended and transported by a crane.

In order to form the next concrete block 1, operations such as cleaning of the outer frame face plate 6 and application of a release agent are required. However, at this time, if the cleaning surface is inside, the operation is not easy. However, in this formwork 17, the outer frame face plate 6 is
5 can be turned outwardly, as shown in FIG. In this state, it is extremely easy to clean the outer frame face plate 6 and the horizontal cylindrical portion 6a (remove the adhered concrete) and apply the release agent, and the workability is good. When the links 11 of the pantograph mechanism 12 are open as shown in FIG. 6, a lock mechanism (not shown) locks the links 11 so that the mutual angles of the links 11 do not change so that the outer frame face plate 6 does not move. .

After the cleaning and the application of the release agent are completed, the outer frame face plate 6 is again rotated by 180 ° about the vertical axis 15 so that the horizontal cylinder 6a faces inward as shown in FIG. Hereinafter, by repeating the above-described operation, the next concrete block can be formed.

By the way, many concrete blocks 1
In the construction method of stacking concrete blocks in the vertical, horizontal, and depth directions, a concrete block having no circular opening 1a is often arranged on the outermost surface of the stacked concrete blocks. When molding such a concrete block, as an outer frame face plate corresponding to the face without the circular opening 1a,
A simple flat outer frame face plate without the horizontal cylindrical portion 6a is used. In this case, since the outer frame face plate can be inserted and removed from the vertical shaft 15, by replacing the outer frame face plate,
It can be easily handled.

As shown in FIG. 8, the outer frame face plate 6 may have a structure in which laterally facing cylindrical portions 6a are attached to both sides. In this case, since the work of cleaning the outer surface side of the outer frame face plate 6 and applying the release agent can be performed in the cured state after the concrete injection, the formwork for the next concrete injection can be immediately performed. It is efficient. In the case of the embodiment, the irregularities for the mold surface provided on the outer frame face plate 6 are the horizontal cylindrical portions 6a, but the shape of the irregularities for the mold surface is arbitrary, and includes a simple cylindrical surface or the like.

In the above-described embodiments, the hexahedron is hollowed out in a cylindrical shape to form a hollow hexahedral concrete block 1 having a circular opening 1a on each side. The present invention can also be applied to the case of forming a hollow hexahedral concrete block having a hollowed-out structure into a non-cylindrical cylindrical shape, and furthermore, using an outer frame face plate having no horizontal cylindrical portion 6a, a simple hollow hexahedral concrete block. Of course, it is applicable also when molding. When a simple hexahedral concrete block that is not hollow is formed, as shown in FIG. 8A, the outer frame 25 is formed not by four outer frame face plates but by two rectangular outer frame face plates 26.
Can also be configured. Arrows indicate the moving direction of the outer frame face plate 26.

The present invention is not limited to the hexahedron, but can be applied to the formation of a triangular prism-shaped concrete block. FIG. 8B shows the outer frame 35 in that case. 36 is an outer frame face plate. Also, the present invention can be applied to a case where a cylindrical concrete block is formed. FIG. 8C shows the outer frame 45 in that case. 46 is an outer frame face plate. In addition, the shape of the concrete block is arbitrary. The outer frame face plate does not necessarily have to be a vertical face. That is, as shown in FIG. 8D, an outer frame 55 in which the outer frame face plate 56 is provided at an angle may be used. In this case, as shown by a two-dot chain line, the robot is moved outward while being tilted, and rotated about a vertical axis. Also,
The bottom plate is usually provided horizontally, but may be slightly inclined.

In the embodiment, a pantograph mechanism is used as a means for supporting the outer frame face plate so as to be movable in and out of the mold. However, the present invention is not limited to this. Further, in the embodiment, all the outer frame face plates 6 are provided so as to be movable and rotatable in and out of the mold, but only some of the outer frame face plates 6 may be movable and rotatable. For example, when the outer frame face plate is not provided with irregularities, if only one of the opposed outer frame face plates 6 is movable and rotatable, the molded concrete block can be easily taken out, and therefore, the outer frame face plate can be easily removed. Cleaning and release agent removal can be easily performed.

[0029]

According to the present invention, there is provided a concrete block forming form provided with a substantially cylindrical outer frame formed by a plurality of outer frame face plates erected on a bottom plate. Since at least one outer frame face plate is provided so as to be movable inward and outward of the form, and rotatable at an outward movement position so that the front and back are reversed, concrete block molding is performed by repeatedly using the form. At the time of performing, work for reuse such as cleaning of the outer frame face plate and removal of the release agent was facilitated, and workability was able to be improved.

When the outer surface of the outer frame face plate is provided with irregularities for the mold surface such as a horizontal cylindrical portion, both surfaces can be used as the mold surface, and at the time of curing the concrete, the outer surface can be cleaned and the release agent can be removed. Can be removed.
Work efficiency is improved.

According to a fifth aspect of the present invention, if the outer frame face plate can be inserted and removed upward, it is possible to easily replace the outer frame face plate, and to form a concrete block in which only some of the surfaces have different shapes. , Easy to deal with.

According to the sixth aspect, the inside of the hexahedron is hollowed out in a cylindrical shape to form a hollow hexahedron-shaped concrete block having a circular opening on each side.

When a pantograph mechanism is used as a mechanism for moving the outer frame face plate in and out of the mold, the outer frame face plate can be easily and smoothly moved by human power. Is good.

According to the eighth aspect, the mechanism in which the outer frame face plate is attached to the vertical axis constituting the connecting node located outside the pantograph mechanism is extremely capable of supporting the outer frame face plate so as to be movable and rotatable. Concise and efficient.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a concrete block forming formwork according to an embodiment of the present invention.

FIG. 2 is a plan view of the concrete block forming formwork of FIG. 1;

FIG. 3 is a plan view showing a state where one outer frame is moved outward in FIG. 2;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a plan view showing a state in which the outer frame at the outward movement position in FIG. 3 is rotated so that the front and back are reversed.

FIG. 7 shows another embodiment of the present invention.
(B), (c), and (d) are different embodiments.

FIG. 8 shows another embodiment of the outer frame face plate according to the present invention, and is a front view of a main part of a concrete block forming formwork.

FIG. 9 is a perspective view of a concrete block to be formed by the concrete block forming formwork of the embodiment.

FIG. 10 is a perspective view of a conventional concrete block forming form for forming the concrete block of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete block 3 Bottom plate 4 Cylindrical inner frame 5, 25, 35, 45, 55 Outer frame 6, 26, 36, 46, 56 Outer frame face plate 6a Horizontal cylindrical part 9 Base 10 Rectangular base 11 Link 12 Pantograph mechanism 13 Fixed Connection section 14 Holding bracket 15 Vertical axis 17 Concrete block forming formwork (formwork)

Continuation of the front page F term (reference) 4G053 AA07 BA06 BC02 BD01 BD15 BE03 EA02 EA43 EA47 EB03 EB06

Claims (8)

[Claims] 1. A concrete block molding form having a substantially cylindrical outer frame formed by a plurality of outer frame face plates erected on a bottom plate, wherein at least one of the plurality of outer frame face plates is provided. A concrete block molding form characterized by being provided so as to be able to move in and out of the form and to be rotatable so that the front and back are reversed at an outward movement position. 2. The concrete block molding form according to claim 1, wherein irregularities for the form surface are formed on both surfaces of the outer frame face plate. 3. The concrete block forming form according to claim 1, wherein a cylindrical inner frame is arranged inside the outer frame. 4. The concrete block molding form according to claim 3, wherein a projection for forming a hollow portion is provided on an inner surface of the outer frame face plate to be in contact with an outer peripheral surface of the inner frame. 5. The concrete block molding form according to claim 1, wherein the outer frame face plate is provided so as to be able to be inserted and removed upward. 6. A cylindrical inner frame is arranged at substantially the center on the bottom plate,
A shape in which four outer frame face plates are arranged so as to form a square cylindrical outer frame in each of the four sides, and the inner face of each of the outer frame face plates is in contact with the outer circumferential face of the cylindrical inner frame without a leading end face being tight. A concrete block forming form for forming a hollow hexahedral concrete block having an opening on each side of a hexahedron, having a structure in which a laterally oriented cylindrical portion is attached, wherein each of the outer frame face plates is A concrete block forming form comprising: an outer frame face plate support mechanism for rotatably supporting the inside and outside directions and rotating outward so as to be turned upside down. 7. A pantograph mechanism comprising four links connected in a substantially rhombic shape in a substantially horizontal plane as means for supporting the outer frame face plate movably in and out of the form. The concrete block molding formwork according to claim 1 or 6, wherein 8. The concrete block forming form according to claim 7, wherein the outer frame face plate is attached to a vertical shaft constituting a connecting node located outside the four links in the pantograph mechanism.