JPH10249832A - Mold for concrete board and its molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mold for reducing a space of a molding work by reducing a manufacturing cost of a concrete board having a plurality of blocks disposed adjacently on its surface and a method for molding it. SOLUTION: The mold for a concrete board forms mold spaces S1, S2 opened upward modelling on the board of a vertical posture of a bottom frame and side frames 2, 3, 4, 5A, 5B. A plurality of blocks are laminated and contained in block containing recesses 33, 43 provided along long sides 32, 43 of the frames 3, 4 of the spaces S1, S2. Then, the frames 5A, 5B are slid, end faces of the laminated blocks are pressed and fixed. Further, after upper surfaces of the laminated blocks are pressed by pressing plates 7A, 7B, concrete material is cast in the residual spaces S1, S2. Thus, the boards with the blocks are molded in a vertical posture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die for a concrete board and a molding method therefor, and more particularly to a molding die capable of molding a concrete board in which a plurality of blocks are arranged adjacently on a plate surface in a vertical posture. It relates to the molding method.

[0002]

2. Description of the Related Art Thick rectangular concrete boards are used for soundproof walls and the like on expressways. This concrete board functions as a soundproof wall by reflecting the noise generated in the expressway to the inside. In recent years, various proposals have been made to further improve the soundproofing effect of this concrete board. One of them is a concrete board in which a plurality of sound absorbing blocks having a noise absorbing effect are arranged adjacently on a board surface. Have been. This concrete board absorbs noise in a large number of holes provided in the sound absorbing block to improve the soundproofing effect.

[0003] The concrete board to which the sound absorbing block is fixed is formed by flat striking. In particular,
A plurality of sound-absorbing blocks are laid horizontally and arranged, and concrete is poured from above. Then, the rear surface of the poured concrete material is flattened and dried and solidified to form a concrete board.

[0004]

However, the work to finish the back of the concrete board flat is performed manually and is a very time-consuming work.
There is a problem that the production cost of concrete boards is increased. Moreover, since a concrete board is formed by arranging a plurality of sound absorbing blocks horizontally, there is a problem that a large space is required for the forming operation.

On the other hand, it is conceivable to form a concrete board in a vertical posture. In such a case, concrete material must be injected after stacking a plurality of sound absorbing blocks.However, during the work of injecting concrete material, there is a problem that the stacked blocks are broken because vibration is applied. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to reduce the manufacturing cost of a concrete board in which a plurality of blocks are arranged adjacently on a plate surface and to reduce the space for forming work. It is an object of the present invention to provide a molding die and a molding method therefor.

[0007]

A molding die according to claim 1 is a molding die for molding a concrete board in which a plurality of blocks are arranged adjacently on a plate surface.
A plurality of side frames that form a mold space following the concrete board in a vertical posture together with the bottom frame, and at least one of the side frames presses an end face of the stacked blocks before molding. In order to fix it, it is slidable on the bottom frame.

According to the first aspect of the present invention, the bottom frame and the side frame form a mold space following a concrete board in a vertical posture, and a plurality of blocks are stacked in the mold space. After the blocks are stacked, the side frames are slid on the bottom frame to press and fix the stacked blocks. Thereafter, the concrete material is poured into the remaining mold space and dried and solidified to form a concrete board having a plurality of blocks fixed on the plate surface.

According to a second aspect of the present invention, in the molding die of the first aspect, a reinforcing steel net buried in the concrete board is positioned in the die space, and is urged by the reinforcing steel net. A spacer is provided for pressing the side surface of the stacked blocks before molding against the side frame. According to the mold of the second aspect, the mold operates in the same manner as the mold of the first aspect, and the laminated blocks are
Since not only the end face but also the side face is pressed by the spacer body urged by the reinforcing steel net, the laminated state is more reliably maintained during the forming operation.

[0010] The mold according to claim 3 is the mold according to claim 1 or 2.
The molding die according to the above, further comprising a block receiving surface provided on the bottom frame body and the block before molding is laminated, and a pressing member that presses the upper surface of the block laminated on the block receiving surface, The block receiving surface and the end surface on the concrete material injection side of the pressing member are chamfered.

According to the third aspect of the present invention, the mold operates in the same manner as the first or second aspect, and the block laminated on the block receiving surface is further pressed from above by the pressing member. Since it is pressed, the laminated state is more reliably maintained during the molding operation. Further, the concrete material injected into the mold space enters the chamfered portion by the chamfers provided on the block receiving surface and the pressing member, and fixes the end surfaces of the blocks stacked in the lowermost row and the uppermost row.

According to a fourth aspect of the present invention, there is provided a molding method for molding a concrete board having a plurality of blocks arranged adjacently on a plate surface, using the molding die according to any one of the first to third aspects. A method, a laminating step of laminating a plurality of blocks on the bottom frame, a pressing step of pressing and fixing the blocks laminated by the laminating step, and, after the pressing step, a concrete material into the mold space. And an injecting step of injecting.

[0013]

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall plan view of a concrete board mold according to one embodiment of the present invention, and FIG. 2 is an overall front view thereof. In this embodiment, a molding die 10 capable of simultaneously molding two concrete boards 9 is illustrated.

The mold 10 is provided on a base 6 of a certain thickness placed on the ground and having a rectangular plan view, and a side wall 2 suspended at one end of the base 6 and an upper surface of the base 6. Bottom frames 1A, 1B (only one is shown in FIG. 2) arranged in contact with each other, and mold spaces S1, S2 which surround the bottom frames 1A, 1B in a U-shape in plan view and open upward together with the side walls 2. Are formed with the side frames 3, 4, 5A, 5B.

The side wall 2 forms a box-like body which is opened outward (upward in FIG. 1), is fixed and suspended on the base 6, and extends along the long side of the base 6. The side frame body 3 has a substantially L-shape in plan view, and has a short side portion 31 that is a wide box-like body that opens outward (to the left in FIG. 1) and a narrow width portion that extends parallel to the side wall 2. It has a long side portion 32. As shown in FIG. 4, the long side portion 32 is disposed in contact with the side surface of the bottom frame 1A. The side frame 5 </ b> A is a box-shaped body formed substantially in the same shape as the short side 31 in plan view and opened outward (to the right in FIG. 1). It is slidably mounted on the frame 1A in the direction of arrow A in FIG.

The bottom frame 1A is an elongated rectangular box-like body that opens downward, and the upper surface is the mold surface 1a of the concrete board 9. The side surface of the side wall 2 in contact with the side surface of the bottom frame 1A, the side of the long side 32, the side of the short side 31 located on one end of the bottom frame 1A, and the bottom frame 1A.
And the side surface of the side frame body 5A located on the other end of the mold, a mold space S1 opened upward is formed. In addition, as shown in FIG. 4, when the front end corner of the short side portion 31 is engaged with a locking piece 21 (only one is shown) protrudingly provided at a vertical position of one end corner of the side wall 2, the side frame is formed. The body 3 is positioned to the left and back in FIG. Since each locking piece 21 has an arc-shaped tip, the side frame 3 can be easily removed.

As shown in FIG. 4, the mold surface 1a of the bottom frame 1A
Has a side edge protruding upward. The protruding portion 11 has an inclined surface 1c which is inclined at a constant angle from the block receiving surface 1b to the mold portion 1a general portion while the top surface becomes a flat block receiving surface 1b. It has become. The inclined surface 1c guides the sliding direction of the side frame 5A and also functions as a rail at the time of sliding. In addition, since the lower slope 9b is formed on the concrete board 9 after molding by the slope 1c (FIG. 6), the lowermost block 92 of the concrete board 9 can be more firmly fixed. Further, a step is formed on the side of the block receiving surface 1b on the side frame 3 side. The lower side of the stepped portion 311 of the side frame 3 is locked to the step, and the side frame 3 is positioned rightward in FIG.

Above the block receiving surface 1b, a part of the mold space S1 is narrowed in the longitudinal direction by the stepped portion 311 of the short side portion 31 of the side frame 3 and the stepped portion 51 of the side frame 5A. Block receiving recess 33. The depth W of the block storage recess 33 is equal to the number of small sound-reducing holes 921 (FIG. 6).
The thickness is equal to the thickness of the brick sound absorbing block 92 provided with.

As shown in FIG. 3, when a required number of blocks 92 are stacked adjacent to each other on the block receiving surface 1b, the blocks 92 fill the block storage recess 33 except for its upper edge, so that A rectangular mold space S1 is formed when viewed (FIG. 1). The length of the long side of the mold space S1 is equal to the lateral dimension of the concrete board 9 after molding, and the length of the short side is equal to the thickness of the concrete board 9. The depth of the mold space S1 is equal to the vertical dimension of the concrete board 9.

At the upper edge of the block storage recess 33, a pressing plate 7 having a constant thickness for pressing the top surface of the stacked blocks 92 is provided.
A is arranged. The lower surface of the pressing plate 7A is inclined such that a half in the width direction forms an upper inclined surface 9a (FIG. 6) of the concrete board 9 after molding. The blocks 92 in the uppermost row of the concrete board 9 are firmly fixed to the concrete board 9 by the upper slope 9a.

In the center of the upper surface of the pressing plate 7A, a columnar reinforcing bar 71 is provided horizontally, and both ends of the reinforcing bar 71 are respectively attached to mounting brackets 72A, 73A bent in an L-shape in plan view. Is welded to the lower surface of the tip of one side 721, 731. The other sides 722 and 732 of each of the mounting brackets 72A and 73A are screwed and fixed to female screw mounting holes provided on the upper surface of the short side portion 31 of the side frame 3 and the upper surface of the side frame 5A, respectively. ing.

The mounting hole 73 of the mounting bracket 73A is provided.
3 is a long hole extending in the left-right direction of FIG. Therefore, according to the variation in the product size of the block 92,
The side frame 5A is configured to be slidable in the left-right direction (the direction of arrow A and the direction of anti-arrow A in FIG. 4).

On the base 6, an L-shaped side frame 4 in a plan view is further provided, and the tip of the short side 41 is connected to the short side 3 of the side frame 3.
1 is provided in contact with the base end. This side frame 4 is
A long side portion 42 extending at a constant width in the longitudinal direction of the base 6 is provided, and the whole is a box-shaped body that opens outward (downward in FIG. 1). A side frame 5B having the same shape as the above-described side frame 5A is in contact with a side surface of the long side 42 at the end of the long side 42 and is parallel to the short side 41 of the side frame 4. It is arranged. On the base 6 below these side frames 4, 5B, a bottom frame 1B having the same shape as the bottom frame 1A described above is disposed. Accordingly, the side surfaces of the long sides 32, 42 of the side frames 3, 4 in contact with both side surfaces of the bottom frame 1B, the side surfaces of the short side 41 located on one end of the bottom frame 1B, and the bottom frame A mold space S2 that opens upward is formed by the side surface of the side frame 5B located on the other end of the body 1B. Also, along the long side 42 of the side frame 4, the block storage recess 4
3 is formed.

The side frame 4 is provided with a locking piece 3 having a front end corner of the short side portion 41 projecting vertically from one end of the side frame 3.
4 and 34 (FIG. 4), and are positioned in the left and back directions of FIG. On the other hand, the positioning of the side frame 4 in the right direction is performed by locking the lower portion of the stepped portion 411 with a step formed on the side frame 4 side of the block receiving surface of the bottom frame 1B. Since the tips of the locking pieces 34, 34 are formed in an arc shape, the side frame 4 can be easily removed.

Pressing plate 7B and mounting brackets 72B, 7B
Since the shape of 3B is the same as the shape of the pressing plate 7A and the mounting brackets 72A and 73A already described, the description is omitted.

U-shaped receiving members 61 are provided at upper and lower positions on the left and right end surfaces of the side wall 2 and the side frame 4 (FIG. 2). Long fastening shafts 62 are respectively bridged between the front and rear receiving brackets 61, and nuts 63 are coupled to male screw portions formed at the front and rear ends thereof, thereby pulling the side frame 4 toward the side wall 2. I have. A pressing bolt 65 is provided at the center of the base 6 in the longitudinal direction through a fixed rectangular nut plate 64, and its tip pushes the center of the lower side of the side frame 4 toward the side wall 2. ing. By the fastening shaft 62 and the pressing bolt 65, the side wall 2 and the side frame 3,
4, 5A and 5B are closely attached to each other in the front-back direction (vertical direction in FIG. 1).

L-shaped bent stays 66 are provided on the end surfaces of the side wall 2 and the side frame 4 on the side of the slidable side frames 5A and 5B, respectively, at an intermediate position in the up and down direction (FIG. 2). 2). In these stays 66, 66,
Both ends of a box-shaped support 67 (FIG. 4) that is opened inward are placed. The support 67 includes side frames 5A and 5B.
At two locations in the longitudinal direction corresponding to the stepped portions 51, 51, mounting holes provided with weld nuts 671 are provided. Pressing bolts 68 and 69 pass through these mounting holes. The distal ends of the pressing bolts 68 and 69 are connected to the respective side frames 5A,
5B is inserted between the parallel plates 52 and 53 disposed in the center of the space in the box (FIG. 5), and the back surface of the stepped portion 51 is pressed. By this pressing, the side frames 5A, 5B are connected to the other side frames 3, 4
In the direction of the short sides 31 and 41 (in the direction of arrow A in FIG. 4). Accordingly, the stepped portions 51 of the side frames 5A and 5B,
Since 51 is brought into close contact with the end face of the stacked blocks 92, the stacked blocks 92 are fixed in the lateral direction.

It should be noted that the side frames 5A, 5B are
In the case of pushing with 8, 69, the bolt inserted into the mounting holes 733, 733 is loosened, and the side frames 5A, 5B are slidable. Further, even when the product sizes of the blocks 92 vary, as shown in FIG.
A slight gap is provided between the end surfaces of the pressing plates 7A and 7B and the stepped portion 51. However, since this gap is formed sufficiently small, it does not hinder the molding of the concrete board 9.

Mold space S formed on bottom frames 1A and 1B
In S1, S2, at the center of each, rebar networks 8A and 8B assembled in a lattice shape are arranged (FIGS. 1 and 3). The reinforcing bars 8A and 8B are members for improving the strength of the concrete board 9 after molding and pressing the side surfaces of the stacked blocks 92 so that the laminated blocks 92 do not collapse together with the spacer bodies 81A and 81B. Used as

Spacers 81A and 81B are inserted at a plurality of positions in the longitudinal direction of the reinforcing bars 8A and 8B to position the reinforcing bars 8A and 8B from front and rear. The spacer bodies 81A and 81B are formed by bending a plate body longer than the depth of the mold spaces S1 and S2 into a U-shaped cross section, and provided with an inverted U-shaped handle 811 at an upper end thereof. The spacer bodies 81A and 81B are arranged so as to be displaced from each other in the longitudinal direction of the reinforcing bars 8A and 8B, and their legs contact the reinforcing bars 8A and 8B. It is in contact with the side surface of the stacked block 92. Such a spacer body 81A, 81B is used as the reinforcing bar mesh 8A, 8B.
By receiving the elastic force of (1) and contacting the side surfaces of the stacked blocks 92, the stacked state of the blocks 92 in the front-rear direction (the vertical direction in FIG. 1) is appropriately maintained.

Next, the molding die 10 constructed as described above is used.
A method of forming the concrete block 9 using the method will be described. First, the bottom frames 1A, 1B, the side frames 3,
4, 5A, and 5B are arranged, and the nuts 63 and the pressing bolts 65 are tightened to move the molding die 10 in the front-rear direction (FIG. 1).
Up and down). At this stage, the pressing plates 7A,
7B, rebar meshes 8A, 8B and spacer bodies 81A, 81B
Is not provided, so that the upper portions of the mold spaces S1 and S2 and the block storage recesses 33 and 43 are opened, and the side frames 5A and 5B are slidable.

In such a state, the sound absorbing blocks 92 are sequentially stacked on the block receiving surfaces 1b of the bottom frames 1A and 1B in a state of standing in the horizontal direction. After stacking all the blocks 92, the pressing plates 7A, 7B are connected to the side frames 3, 4, 5A,
5B and the stacked block 92, and the pressing plate 7
A, 7B mounting brackets 72A, 72B, 73A, 7
3B is temporarily fixed to the upper surfaces of the side frames 3, 4, 5A and 5B via bolts.

After temporarily fixing the pressing plates 7A and 7B, the reinforcing steel mesh 8
A and 8B are inserted into the mold spaces S1 and S2,
Spacers 81A and 81B are sequentially inserted before and after A and 8B. As a result, the reinforcing bars 8A and 8B as reinforcing members of the concrete block 9 are positioned at the center in the mold spaces S1 and S2, and the side surfaces of the plurality of stacked blocks 92 are positioned by the back surface of the spacer body 81A. The frames 3, 4 are pressed toward the long sides 32, 42. At this time,
The spacer body 8 is in contact with the laminated block 92.
Since the back surface is bent into a 1A U-shape, the side surfaces of the stacked blocks 92 can be pressed while contacting over a wide range. Therefore, the stacked state of the stacked blocks 92 is maintained without collapsing in the front-back direction (vertical direction in FIG. 1).

Subsequently, the pressing bolts 68, 69 are tightened, and the side frames 5A, 5B are slid in the direction of arrow A in FIG.
Thus, the end faces of the stacked blocks 92 are pressed in the lateral direction and fixed. As described above, the pressing plates 7A, 7B
There is a slight gap between the end face of the block 92 and the stepped portions 51, 51 of the side frames 5A, 5B, so that even if the product size of the block 92 varies, the stacked blocks 92 are securely stacked. Can be pressed laterally. In addition, since the side frames 5A and 5B can slide independently of each other and the amount of slide is individually determined, the end faces of the blocks 92 stacked in an optimal state for each of the mold spaces S1 and S2 are pressed and fixed. can do.

After sliding the side frames 5A and 5B to fix the end faces of the stacked blocks 92, the bolts of the temporarily fixed pressing plates 7A and 7B are securely tightened. And
Concrete material is injected into the mold spaces S1 and S2 in this state. After the pouring, the molding die 10 is vibrated to spread the poured concrete evenly in the mold spaces S1 and S2. As a result, if the concrete material is insufficient, the insufficient concrete material is re-injected into the mold spaces S1 and S2, and the molding die 10 is vibrated again. By repeating the injection of the concrete material and the vibration of the molding die 10 several times, the concrete material is filled in the mold spaces S1 and S2, and the injection is completed. As described above, the stacked blocks 92 are firmly fixed in the front-rear direction and the lateral direction, so that even if such vibration is applied, the stacked state does not collapse.

After the concrete material is injected, the handle 811 is grasped and the spacer bodies 81A and 81B are pulled out. Thus, the pressing of the stacked blocks 92 in the front-rear direction by the back surface of the spacer body 81A is released. Also, the mold space S
A gap corresponding to the spacer bodies 81A and 81B is generated in the space S1 and the space S2. However, since the spacer bodies 81A and 81B are formed in a U-shape, and are displaced in the longitudinal direction, and both legs are disposed in contact with the lattice-shaped reinforcing nets 8A and 8B, the spacers 81A and 81B are formed in the mold spaces S1 and S2. The concrete material injected into the space is fully filled in the concave space of the spacer bodies 81A and 81B. Therefore, after the concrete material is injected, the spacer bodies 81A, 8
1B, the voids formed in the mold spaces S1, S2 are only a small amount corresponding to the thickness of the spacer bodies 81A, 81B, and even after the spacer bodies 81A, 81B are drawn, the concrete remains in the mold spaces S1, S2. The state in which the material is almost fully filled can be maintained.

In this state, the mold 10 is further vibrated,
The concrete material is spread over the gap created by the extracted spacer bodies 81A and 81B. After (or with) this vibration, the insufficient concrete material is re-injected. Since the side surfaces of the laminated blocks 92 are pressed by the concrete material almost fully filled in the mold spaces S1 and S2 instead of the spacer body 81A, the molding die 10 is pulled out after the spacer bodies 81A and 81B are pulled out. Even if it vibrates again, the laminated state of the block 92 does not collapse.

After the vibration of the mold 10 and the injection of the concrete material are completed, the mold 10 is left for several hours. Then, the concrete material is dried and solidified to form a board body 91 in which the block 92 is joined to the plate surface. Thereafter, the fastening shaft 62, the pressing bolts 65, 68, 69 and the pressing plates 7A, 7B are removed, the side frames 3, 4, 5A, 5B are sequentially removed, and the molded concrete board 9 is taken out.

On one surface of the concrete board 9, a sound absorbing block 92 in which a number of small noise holes 921 are formed is fixed adjacent to an inner peripheral portion of the concrete board 9 leaving a predetermined width of the outer peripheral edge of the board plate surface. The upper and lower outer peripheral edges of the plate surface of the concrete board 9 are slopes 9a and 9b which continue from the side surface of the block 92 to the upper and lower end surfaces of the board body 91. Has been solidified.

The concrete board 9 has the sound absorbing block 92 fixed to the road surface side of the highway and the left and right ends are inserted into a connecting member 93 using H-shaped steel or the like, and are continuously installed in a vertical posture. Is done. Thus, it is used as a soundproof wall or the like along the road surface of an expressway.

As described above, the molding die 1 of this embodiment is
By using 0, the stacked blocks 92 are firmly fixed in the front-back and lateral directions, so that they do not collapse during the molding operation. Therefore, the concrete board 9 in which the plurality of sound absorbing blocks 92 are arranged adjacently on one side can be formed in a vertical posture (vertical forming). Therefore, the space required for the molding operation can be reduced. Also, by molding in a vertical posture, the surface area of the concrete material exposed from the mold spaces S1 and S2 is:
It becomes a small thing corresponding to the upper end surface of the concrete board 9. Therefore, the work of equalizing the surface of the concrete material can be easily performed without any trouble. Therefore, the manufacturing cost of the concrete board 9 can be reduced by the amount of labor for the leveling operation.

Further, according to the molding die 10 of this embodiment, a plurality of (two) concrete boards 9 can be molded at the same time, so that the production efficiency can be improved.
Further, since each member of the molding die 10 is formed in a box-like body and is reduced in weight, each member can be easily moved at the time of molding operation, and the working efficiency can be improved.

As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. Can easily be inferred.

For example, in the present embodiment, the molding die 10 capable of molding two concrete boards 9 at one time has been described. However, a molding die capable of simultaneously molding three or more concrete boards may be provided by appropriately adding the side frame and the bottom frame. In consideration of the weight and working space of the mold, a mold capable of molding five concrete boards at a time is suitable.

In this embodiment, the entire side frame members 5A and 5B are formed so as to be slidable. However, the side frames 5A and 5B are divided into a side frame pressing the end face of the block 92 and another side frame, and only the side frame pressing the end face of the block 92 is slidable. It may be formed. Thereby, even if the product size of the block 92 varies, the length of the concrete board 9 can be made uniform.

[0046]

According to the first aspect of the present invention, since the laminated blocks are pressed and fixed by the side frames, the concrete board is formed in a vertical posture without breaking the laminated state of the blocks. There is an effect that can be. In addition, by forming such a concrete board in a vertical posture, there is an effect that the forming operation can be performed in a small space. Furthermore, the leveling operation of the concrete material surface is required only at one end surface of the concrete board, so that the leveling operation can be easily performed. Therefore, the trouble of the break-in work can be saved,
There is an effect that the production cost of the concrete board can be reduced.

According to the mold of claim 2, claim 1 is provided.
In addition to the effects of the described mold, the laminated block is not only pressed at its end face by the side frame, but also by its side face pressed by the spacer body urged by the rebar mesh, During the molding operation, there is an effect that the stacked state of the blocks can be more reliably maintained.

According to the mold of claim 3, claim 1 is provided.
Or, in addition to the effect of the molding die described in 2, the stacked block is also pressed by the pressing member, so that the stacked state of the block can be more reliably maintained. In addition, since the block receiving surface and the pressing member of the bottom frame are chamfered on the end face on the concrete material injection side, the concrete material injected into the mold space enters the chamfered portion, and Then, the end faces of the blocks stacked in the uppermost row are fixed. Therefore, there is an effect that the blocks arranged on both sides of the concrete board can be firmly fixed.

According to the concrete board molding method of the present invention, since the concrete material is poured after the laminated blocks are pressed and fixed, the concrete board is molded in a vertical posture while maintaining the laminated state of the blocks. There is an effect that can be.

[Brief description of the drawings]

FIG. 1 is an overall plan view of a concrete board forming die according to one embodiment of the present invention.

FIG. 2 is an overall front view of a concrete board mold.

FIG. 3 is a partially cutaway front view of a concrete board mold.

FIG. 4 is a cutaway perspective view of a bottom frame and side frames.

FIG. 5 is a cutaway perspective view of a bottom frame and side frames.

FIG. 6 is an overall perspective view of a molded concrete board.

[Explanation of symbols]

1A, 1B Bottom frame 1b Block receiving surface 1c Inclined surface (chamfered) 2 Side wall 3, 4 Side frame 5A, 5B Side frame (slidable side frame) 6 Base 7A, 7B Press plate (press member) 8A , 8B Reinforcing net 9 Concrete board 10 Mold 33, 43 Block storage recess 81A, 81B Spacer body 92 Sound absorbing block S1, S2 Mold space

Claims (4)

[Claims] 1. A molding die for molding a concrete board having a plurality of blocks arranged adjacently on a plate surface, comprising: a bottom frame, and a mold space following the concrete board in a vertical posture together with the bottom frame. A plurality of side frame bodies to be formed, at least one of the side frame bodies is formed so as to be slidable on the bottom frame body in order to press and fix an end surface of the stacked blocks before molding. A molding die for a concrete board. 2. A reinforcing steel net buried in the concrete board is positioned in the mold space, and is urged by the reinforcing steel net to move a side surface of the laminated block before molding to the side frame. 2. The concrete board mold according to claim 1, further comprising a pressing spacer body. 3. A block receiving surface provided on the bottom frame body, on which the block before molding is laminated, and a pressing member for pressing an upper surface of the block laminated on the block receiving surface; The concrete board forming die according to claim 1 or 2, wherein the surface and the end surface of the pressing member on the concrete material injection side are chamfered. 4. A molding method for molding a concrete board having a plurality of blocks arranged adjacently on a plate surface using the molding die according to claim 1. A stacking step of stacking a plurality of blocks thereon, a pressing step of pressing and fixing the blocks stacked in the stacking step, and an injection step of injecting a concrete material into the mold space after the pressing step. A method for forming a concrete board.