JP3599702B2 - Concrete block molding equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a concrete block forming apparatus used for lining a construction surface such as a slope or a flat ground of a river or a road.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 11-31093 teaches a method of extending and embedding a retaining wire rod from a rock or cobblestone-shaped concrete block piled up on an inclined surface and retaining the piled-up concrete block. In this method, a hole is drilled in the block with a drill or the like, an adhesive is injected into the hole, the end of the retaining wire is inserted, and the block is joined.
[0003]
Japanese Patent Application Laid-Open No. 2000-199214 and the like show a chain-type block in which a large number of concrete blocks are joined to a net material by anchor bolts and the construction surface is lining with the net material. Anchor bolt connection holes are also drilled in concrete blocks.
[0004]
The concrete block in each of the above examples uses a three-dimensionally shaped rock or cobblestone shape for both the exposed part and the buried part (reserve part) in order to foster the natural scenery and appearance.
[0005]
However, in any of the above examples, the work of drilling holes in a large number of blocks piled up on the construction surface requires a great deal of time and labor, resulting in an increase in construction costs.
[0006]
In addition, there is a problem that the block is cracked by the impact of the drill, and furthermore, there is a problem that the depth of the hole drilling varies depending on the operator, which lowers the reliability of the bonding strength.
[0007]
On the other hand, a natural rock shape having a three-dimensionally shaped upper and lower portion or a cobblestone-shaped concrete block is obtained by dividing a block forming die into a lower die and an upper die as shown in JP-A-4-344208. A molding method is employed in which both molds are closed to form a molding cavity, and the concrete cavity is three-dimensionally shaped with the molding cavity.
[0008]
However, even when the split mold is used, since the concrete filling port having a sufficient opening diameter must be provided in the upper mold, as a result, the outer surface of the block facing the opening surface of the concrete filling port has to be flat. Therefore, it is difficult to form the exposed part and the embedded part (retained part) of the concrete block in three dimensions.
[0009]
[Problems to be solved by the invention]
The present invention is to provide a concrete block forming apparatus which can appropriately solve any of the above problems. That is, the present invention provides a concrete block forming apparatus capable of easily and soundly providing holes and grooves for connecting the retaining wires and anchor bolts to the outer surface of the concrete block while forming the concrete block three-dimensionally by a split mold including an upper mold and a lower mold. Is what you do.
[0010]
It is another object of the present invention to provide a concrete block forming apparatus which eliminates the problem of three-dimensional shaping of the concrete block by the upper and lower dies while performing the above-described three-dimensional shaping of the concrete block by the split die of the upper and lower dies.
[0011]
[Means for Solving the Problems]
The present invention is a molding apparatus for forming a molding cavity by closing a lower mold and an upper mold, and molding a concrete block with the molding cavity, and an insert mold interposed and held between the closing surfaces of the lower mold and the upper mold. A concrete block for projecting the insert mold from the closing surface into the molding cavity to form a recess on the outer surface of the concrete block, and using the recess as a connecting recess for the retaining wire or anchor bolt, etc. It is a molding device. Thus, the insert mold forms a recess mold.
[0012]
This concrete block is formed solidly by the upper mold and the lower mold while forming a sound coupling recess, and the coupling recess is easily formed and mass-produced.
[0013]
Further, as another example, a bag mold is provided which is housed in the molding cavity and is filled with concrete, and the lower mold regulates a lower outer surface of a bag mold which is filled with the concrete and swells. Regulates the upper outer surface of the swelled bag type filled with concrete.
[0014]
At the same time, the bag mouth of the bag mold projects outside from the opening of the upper mold to form a concrete filling mouth for filling concrete into the bag mold.
[0015]
Furthermore, an insert die interposed and held between the lower die and the upper die is provided. The insert die projects from the closed surface into the molding cavity, pushes the bag die into the concrete block, and A concrete block forming apparatus for forming a recess on the outer surface of the concrete block and using the recess as a connecting recess for the retaining wire or anchor bolt. Thus, the insert mold forms a recess mold.
[0016]
This molding device forms a sound coupling recess while forming the entire surface of the concrete block and the retaining portion three-dimensionally by the upper mold and the lower mold, and the formation of the coupling recess is easy and mass production is possible. . In addition, three-dimensional molding failure due to the upper and lower molds is properly eliminated by the bag mold.
[0017]
The above invention comprises a bag mold that is placed in the molding cavity and filled with concrete, the lower mold regulates a lower outer surface of a bag mold that is filled with the concrete and swells, and the upper mold is made of concrete. The upper surface of the filled and swelled bag mold is regulated, and the bag mouth of the bag mold protrudes to the outside from the opening of the upper mold, and concrete is filled into the bag mold through the bag mouth. A block forming apparatus is disclosed, which enjoys the three-dimensional shaping effect of the above-described example, and the three-dimensional shaping is appropriately performed, thereby improving the soundness of the recess when forming the coupling recess in the retaining portion. Enables formation.
[0018]
The insert mold is formed by a plurality of divided mold parts to facilitate demolding.For example, when the coupling recess is formed by an annular groove formed in an annular shape on the peripheral surface of the block retaining part, Facilitates the formation of grooves.
[0019]
The lower mold and the upper mold have a lower flange and an upper flange that are closed to each other, and the insert mold is interposed and held between the lower flange and the upper flange.
[0020]
The lower mold is provided with a regulating wall rising at the outer end of the lower flange, and the regulating wall regulates the upper flange and the insert mold of the upper mold to appropriately align the upper mold, the lower mold, and the insert mold. To
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a concrete block forming apparatus according to the present invention will be described below with reference to FIGS.
[0022]
As shown in FIGS. 1 to 5 and the like, the molding apparatus has a lower mold 1 and an upper mold 2 that are divided from each other, and the lower mold 1 and the upper mold 2 are closed to form a molding cavity 3. The molding apparatus fills concrete through a top opening 12 formed at the top of a mold 2 and forms a concrete block 4 in the molding cavity 3.
[0023]
The lower mold 1 is a mold for molding the upper portion (exposed portion 4 ') of the concrete block 4, that is, a mold for molding the upper portion from the middle maximum diameter portion of the block 4 due to the removal from the mold, and is substantially a hemisphere. It is a bottomed type having a shape, that is, a semicircular sphere or a semielliptical sphere, and having an upper opening 10 opened at the upper surface.
[0024]
On the other hand, the upper mold 2 is a mold for molding the lower part (retainer 4 ") of the concrete block 4, that is, a mold for molding the lower part from the middle maximum diameter part of the block 4 due to the demolding. This is a short cylindrical mold having a lower opening 11 having substantially the same diameter as the opening 10 of the mold 1 and having a top opening 12 at the top.
[0025]
The lower die 1 and the upper die 2 are provided with an insert die 5 interposed and held between the closing surfaces for closing the upper opening 10 and the lower opening 11 of the upper die 2. As shown in FIGS. It projects into the molding cavity 3 from the closing surface and bites into the outer surface of the concrete block 4 having fluidity in the molding cavity 3 to form a recess 6 composed of a groove or a hole. It serves as a coupling recess 6 for an anchor bolt or the like. Therefore, the insert mold 5 forms a recess forming mold for forming recesses of various shapes such as grooves and holes.
[0026]
The insert mold 5 has a board portion 17 interposed and held between the closing surfaces between the lower mold 1 and the upper mold 2 and a recess forming portion 18 provided continuously with the board portion 17.
[0027]
As shown in FIG. 9, the coupling recess 6 formed by the insert mold 5 is formed in a retaining portion 4 ″ having a diameter smaller than the intermediate maximum diameter portion of the concrete block 4, and the coupling recess 6 is formed by the retaining recess. An annular groove 6 'is formed on the peripheral surface of the portion 4 ".
[0028]
As an example, a retaining ring 8 or a retaining plate bent at the tip of the retaining wire 7 is fitted into the annular groove 6 ′, and the retaining wire 7 is connected to the block 4.
[0029]
Further, the coupling recess 6 is formed as a non-circular groove, and the retaining tool such as the retaining wire 7 is fitted into the groove with a wide coupling area, or the fitting is firmly carried out with an adhesive after fitting. Can be combined.
[0030]
The concrete block 4 is solidly formed by the upper mold 2 and the lower mold 1 and forms a sound coupling recess 6. The coupling recess 6 can be easily formed and mass-produced.
[0031]
As another example, as shown in FIGS. 7 and 8, there is provided a bag mold 9 which is placed in the molding cavity 3 and filled with concrete to form a concrete block 4, and the lower mold 1 is filled with the concrete. The upper die 2 regulates the upper outer surface of the bag die 9 which is filled with concrete and is expanded while the lower outer surface of the bag die 9 is expanded.
[0032]
At the same time, the bag mouth 13 of the bag mold 9 protrudes outward from the top opening 12 of the upper mold 2 to form a concrete filling port for filling concrete into the bag mold 9. The concrete is filled into the molding cavity 3 through the top opening 12 of the upper mold 2.
[0033]
The bag mold 9 is formed of a bag having flexibility and elasticity (expandability) made of a woven fabric in which fibers are braided, and imparts a water-permeable structure by a mesh. Alternatively, the bag mold 9 is formed of a synthetic resin film or a metal film. Each of these bag molds 9 has flexibility and can be deformed.
[0034]
The bag mold 9 expands due to the application of internal pressure due to the filling of the concrete, and comes into close contact with the inner surface of the molding cavity 3, that is, under the regulation of the inner surfaces of the lower mold 1 and the upper mold 2. In particular, the bag mold 9 made of the woven cloth expands by its braided structure by itself, increases its volume and comes into close contact with the inner surfaces of the lower mold 1 and the upper mold 2. Therefore, the block 4 having a larger cross-sectional area can be easily formed by using the bag mold 9 having a smaller volume.
[0035]
Further, as shown in FIG. 7, there is an insert die 5 interposed and held between the closing surfaces of the lower die 1 and the upper die 2, and the insert die 5 protrudes from the closing surface into the molding cavity 3. The bag mold 9 is pushed into the concrete block 4 to form a recess 6 on the outer surface of the concrete block 4, and the recess 6 is used as a connection recess for the retaining wire 7 and anchor bolts. Therefore, the insert mold 5 forms a recess forming mold that forms a sound recess 6 in cooperation with the bag mold 9.
[0036]
The molding device forms a sound coupling recess 6 by forming the whole of the exposed portion 4 ′ and the retaining portion 4 ″ of the concrete block 4 with the upper mold 2 and the lower mold 1, and forms the sound coupling recess 6. In addition, the bag mold 9 appropriately eliminates the three-dimensional molding failure caused by the upper mold 2 and the lower mold 1.
[0037]
The example shown in FIG. 7 includes the idea of forming the concrete block 4 three-dimensionally by the bag mold 9 which cooperates with the lower mold 1 and the upper mold 2 which are the main components.
[0038]
That is, as shown in FIG. 8, there is provided a bag mold 9 which is placed in a molding cavity 3 formed by closing the lower mold 1 and the upper mold 2 and is filled with concrete to form a concrete block 4. The mold 1 is filled with the concrete and swells to regulate the lower outer surface of the bag mold 9 for forming the exposed part 4 'of the concrete block 4. The upper mold 2 is filled with the concrete 4' and swells. The upper outer surface of the bag mold 9 for forming the retaining portion 4 ″ of the block 4 is regulated, and the bag mouth 13 of the bag mold 9 is protruded outside from the top opening 12 of the upper mold 2, and the bag bag 13 is passed through the bag mouth 13. A concrete block forming apparatus in which concrete is filled into a mold 9 is disclosed.
[0039]
Thereby, the three-dimensional shaping effect on the concrete block 4 described above is enjoyed, and the formation of the concave portion 6 in the case of forming the connecting concave portion can be made sound.
[0040]
The insert mold 5 is formed by a plurality of divided mold portions, and facilitates mold release. For example, when the coupling recess 6 is formed by a groove such as an annular groove 6 ′, the formation of the groove is facilitated.
[0041]
For example, FIGS. 4 and 5 show a case where an annular groove 6 'is formed by the insert die 5. The insert die 5 is formed by a flat plate, and the insert die 5 has a lower die 1 and an upper die on its outer periphery. It has a substrate portion 17 interposed and held between the two closing surfaces, and has a recess forming portion 18 continuously provided on the same plane from the substrate portion 17, that is, a recess forming plate portion.
[0042]
As shown in FIGS. 4 and 5, the insert mold 5 is composed of a plurality of plate-shaped divided molds 5 ', and these divided molds 5' are arranged annularly and on the same plane. And the upper die 2 are interposed and held therebetween. The recess forming portion 18 forms the above-described annular groove 6 ′ on the outer surface of the concrete block 4.
[0043]
The lower die 1 and the upper die 2 have a lower flange 14 and an upper flange 15 which are closed to each other, and hold the board portion 17 of the insert die 5 between the lower flange 14 and the upper flange 15.
[0044]
The insert mold 5 is, for example, a flat mold having the substrate portion 17 and the recess forming portion 18 as described above, and the flat insert mold 5 is sandwiched between the lower flange 14 and the upper flange 15. The front edge (inner edge) is projected into the molding cavity 3, and a groove having the same shape as the front edge is formed in the block 4.
[0045]
The lower mold 1 is provided with a regulating wall 16 raised at the outer end of the lower flange 14 in an annular shape or the like. The upper mold 2 and the insert mold 5 are fitted inside the regulating wall 16 and Thus, the upper flange 15 of the upper mold 2 and the substrate 17 of the insert mold 5 are regulated so that the upper mold 2, the lower mold 1 and the insert mold 5 are properly aligned.
[0046]
The substrate portion 17 of the divided insert die 5 and the lower flange 14 of the lower die 1 are fitted by concave and convex portions respectively provided. For example, a positioning hole 19 is provided in the substrate portion 17 of the insert die 5, and a projection 20 is provided in the lower flange 14 of the lower die 1 so as to fit into the positioning hole 19. Each split mold 5 ′ forming 5 is positioned, and the direction of fitting is set.
[0047]
As described later, the positioning hole 19 also serves as a handle when the insert mold 5 is removed (pulled out) from the molded concrete block 4.
[0048]
Further, as shown in FIGS. 1 to 4, a clip 21 for fastening and holding the closed state of the lower mold 1 and the upper mold 2 is provided. As the clip 21, a known U-shaped clip is used, the U-shaped clip 21 is arranged on four sides of the lower mold 2 and the upper mold 1, and the base end of the U-shaped clip 21 is provided on the lower flange 14 of the lower mold 1. The lower die 1 and the upper die 2 or the lower die 1 are engaged with the outer surface of the upper flange 15 of the upper die 2 by pivotally mounting the U-shaped clip 21 in the through hole and rotating the U-shaped clip 21 inward. And the upper mold 2 and the insert mold 5 are tightened to maintain the closed state. Conversely, by turning the U-shaped clip 21 outward, the fastening engagement is released.
[0049]
After the concrete block 4 is formed according to FIG. 6 to FIG. 8 and reaches a certain degree of hardening, the U-shaped clip 21 is rotated outward to release the mold clamping, and is removed from the through hole. Then, the upper mold 2 is first released, and then the lower mold 1 is inverted to release the concrete block 4.
[0050]
6 and 7, the concrete block 4 is bitten by the insert die 5. The insert die 5 has the positioning hole 19 as described above. The insert insert mold 5 is pulled out of the block 4. Therefore, the positioning hole 19 forms a handle when the insert mold 5 is released. This positioning hole 19 does not cooperate with the protrusion 20 (without providing the protrusion 20), and only the hole 19 is provided, which can be used as a handle.
[0051]
For example, the lower mold 1, the upper mold 2, and the insert mold 5 are each integrally molded with a synthetic resin. 1 to 8, the case where the lower mold 1 and the upper mold 2 are singular, that is, the case where one block is taken is exemplified, but it goes without saying that the case where the block is taken as a plurality of blocks is included. For example, the lower die 1 is connected in the lateral direction, the upper die 2 is connected in the horizontal direction, and the continuous lower die is covered with the continuous upper die, and the molding method described with reference to FIGS. Can be adopted.
[0052]
Also, the lower mold 1 is connected in the lateral direction to form a continuous lower mold, and the upper mold 2 is not connected, and a plurality of separated upper molds are covered with the individual lower molds of the continuous lower mold. The molding method described with reference to FIGS. 6 to 8 can be employed.
[0053]
【The invention's effect】
According to the above-described molding apparatus, a sound concave portion can be formed while the exposed portion and the retaining portion of the concrete block are three-dimensionally formed by the upper die and the lower die, and the formation of the concave portion is easy and mass productivity is improved. It can secure and reduce costs.
[0054]
In addition, the three-dimensional shape of the exposed portion and the retaining portion of the concrete block by the upper and lower dies can be appropriately eliminated by the bag mold, and the purpose of forming the recess in the retaining portion can be appropriately achieved.
[Brief description of the drawings]
FIG. 1 is a plan view of a concrete block forming apparatus.
FIG. 2 is a longitudinal sectional view of a short width portion of the molding apparatus.
FIG. 3 is a longitudinal sectional view of a long width portion of the molding apparatus.
FIG. 4 is a plan view of the molding apparatus in which an upper mold is removed and an insert mold is shown in FIG. 1;
FIG. 5 is a sectional view taken along line AA in FIG. 4;
FIG. 6 is a cross-sectional view of a molding apparatus illustrating a case where a recess is formed on the outer surface of a concrete block without using a bag mold.
FIG. 7 is a cross-sectional view of a molding apparatus illustrating a case where a recess is formed on an outer surface of a concrete block using a bag mold.
FIG. 8 is a cross-sectional view of a molding apparatus illustrating a case where the concrete block is three-dimensionally formed using a bag type.
FIG. 9 is a perspective view showing a state where a retaining wire is connected to the concrete block.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Lower mold, 2 ... Upper mold, 3 ... Molding cavity, 4 ... Concrete block, 4 '... Exposure part, 4 "... Standing part, 5 ... Insert mold, 5' ... Split mold, 6 ... Recessed part, 6 '... annular groove, 7 ... retaining wire, 8 ... retaining ring, 9 ... bag type, 10 ... lower type upper opening, 11 ... upper type lower opening, 12 ... upper type top opening, 13 ... bag type bag Mouth, 14: Lower flange of lower mold, 15: Upper flange of upper mold, 16: Restriction wall, 17: Substrate of insert type, 18: Molded part of insert type, 19: Positioning hole, 20: Positioning projection Part, 21 ... Upper and lower mold fastening clips

Claims (5)

In a concrete block molding apparatus for forming a molding cavity by closing a lower mold and an upper mold and molding a concrete block with the molding cavity, the lower mold is a bottomed mold for molding an upper portion (exposed portion) of the concrete block. , and the other the upper mold is a mold for molding the lower (recessed portions) of the concrete blocks, further possess an insert type interposed held between the closure surface of the lower die and the upper die, the insert type Forming a recess forming die that projects into the forming cavity from the closing surface to form a connecting recess such as a retaining wire or an anchor bolt on the outer surface of the concrete block, and a top opening provided in the upper mold is formed. The concrete cavity is filled with the concrete through the molding cavity to form a concrete block having the exposed portion and the notch portion. Concrete block molding apparatus characterized by being configured for molding said coupling recess to. In a concrete block molding apparatus for forming a molding cavity by closing a lower mold and an upper mold and molding a concrete block with the molding cavity, the lower mold is a bottomed mold for molding an upper portion (exposed portion) of the concrete block. On the other hand, the upper mold is a mold for molding a lower portion ( retainer ) of the concrete block, and further includes a bag mold which is placed in the molding cavity and is filled with concrete , and the lower mold is formed of the concrete. is filled to regulate the lower outer surface of the I's bag-type Rise, the upper mold to regulate the upper outer surface of the concrete is filled bag-type I Rise, the bag type bag mouth top portion provided in the upper die It is projected from the opening to the outside to form a concrete filling port for filling the concrete into the bag-type, further possess an insert type interposed held between the closure surface of the lower die and the upper die, the insert type Closing above From projecting into the molding cavity forms a recess forming mold for molding the recess for coupling such anchor wire and anchor bolts to the outer surface of the concrete block pushes the above-bag into the concrete block, the bag Concrete is filled into the molding cavity through the concrete filling port of the mold to form a concrete block having the exposed portion and the retaining portion, and the insert recess is used to form the coupling recess on the outer surface of the concrete block. A concrete block forming apparatus characterized in that it is configured to perform the following. 3. The concrete block molding apparatus according to claim 1, wherein said insert mold comprises a plurality of divided mold parts. The lower die and the upper die has a bottom flange and the upper flange are closing together, concrete according to claim 1 or claim 2, wherein the intervening holding the insert type between the lower flange and the upper flange Block molding equipment. 5. The concrete according to claim 4 , wherein the lower die has a regulating wall raised at an outer end of the lower flange, and the restricting wall regulates the upper flange and the insert die of the upper die. Block molding equipment.

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