JPH01156010A - Automatic molding method of surface part of natural stone concrete block and its device - Google Patents

Abstract

PURPOSE:To mass-produce a natural stone concrete block efficiently, by a method wherein feed of aggregate for sealing and mortar and feed and lining up of decorative aggregate are performed continuously and an obtained surface part is fed to a concrete block molding machine, during a course where transfer is performed in order by plane pallets on a conveyor. CONSTITUTION:A prepared quantity of sealing aggregate 15 is fed to plane pallets 2, which are transferred on a conveyor 4 in order, through a feed port 5 of sealing aggregate and then the sealing aggregate is scattered evenly on the plane pallet by applying vibration to the sealing aggregate. Then after a desired quantity of decorative aggregate 16 has been fed onto a movable partition plate 10 through a decorative aggregate feed port 8 provided with a hopper 11, the movable partition plate 10 is pulled out gradually and the decorative aggregate is transmounted on the plane pallet which has been transferred away. Then after the decorative aggregate 16 has been encroached into the sealing aggregate 15 by scattering the decorative aggregate 16 evenly by applying a vibration to them, a surface part is formed by applying the vibration to them, a surface part is formed by applying the vibration to them while feeding mortar 17. The surface part is fed to a block molding machine 14 and integrated with a concrete block.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing concrete products, and more specifically, to an automatic forming method for the surface of a concrete block exposed and finished with natural stone or the like before being sent to a block forming machine. The present invention relates to a method and an apparatus thereof.

[Conventional technology]

Conventionally, methods for producing finished concrete products with natural stone exposed on the surface include embedding natural stone in the surface before the concrete hardens, and fixing natural stone etc. with ice on pallets and then pouring concrete, mortar, etc. (Japanese Unexamined Utility Model Publication No. 60-191405), a method in which natural stones are arranged and a wire is engaged with the center of the natural stones to form a wire mesh, and then cement mortar is introduced (Japanese Unexamined Utility Model Publication No. 61-92203).
(Japanese Unexamined Patent Publication No. 5), a method for manufacturing concrete products in which concrete is poured over decorative aggregate, pressurized, vibrated, cured, and then separated by faults to reveal the laminated state on the decorative surface (Japanese Patent Laid-Open No. 5
Publication No. 3-136028) also produces concrete with decorative gravel on the surface by pouring concrete into a formwork, scattering decorative gravel on top of it, and applying vibration and pressure. There is a method for manufacturing blocks, etc. (Japanese Patent Laid-Open No. 158206/1983).

[Problem that the invention seeks to solve]

However, with the method of embedding natural stone before concrete hardens or the method of fixing natural stone with ice, the natural stone tends to peel off after installation.

The method using wire mesh also requires labor and has the disadvantage that the wire mesh is exposed on the surface of the finished product.

Also, JP-A-53-136028, JP-A-58-
Even if the method of Publication No. 158206 is used, when using large aggregates such as natural stone as a surface decorative material, the natural stone and concrete do not bond well and the natural stone easily peels off, which is a disadvantage. It was impossible to produce concrete products.

In addition, all of the conventional methods can only be used for relatively small, uniformly shaped cosmetic aggregates, and cannot be used for large cosmetic aggregates or cosmetic aggregates of various sizes. In addition, the protrusion of the unevenness of the decorative aggregate was limited to a very small amount.

Furthermore, in the conventional method, the bare surface of the concrete is inevitably exposed at the joints, giving the product an artificial atmosphere.

Therefore, the applicants of the present invention have previously applied for a method for manufacturing a concrete product whose surface is decorated by exposing the aggregate (Japanese Patent Application No. 142,813/1982 and Japanese Patent Application No. 142,814/1982).

However, although the method proposed by the present applicants made it possible to manufacture finished concrete products with natural stone exposed on the surface, the arrangement of decorative aggregates depended on manual labor.
In addition, if poured mechanically, it would be uneven or the decorative aggregate would overlap one above the other, so it could not be poured mechanically, so it was necessary to manually add decorative aggregate and filler aggregate to the face plate. This required a lot of effort and made it impossible to work efficiently.

- For this reason, there has been a desire to develop a method and equipment for manufacturing concrete products that enable mechanical and mass production of natural stone concrete products.

An object of the present invention is to provide a concrete product manufacturing method and apparatus for mechanically mass-producing exposed concrete blocks made of natural stone.

Means for Solving Problem C] Therefore, the present inventor has made an effort to eliminate the above-mentioned drawbacks and to provide a concrete block manufacturing apparatus and its manufacturing method that can be mechanically mass-produced and can also surface-dress natural stones. , t 1'3 As a result, in the method for manufacturing natural stone concrete blocks, the manufacturing of concrete blocks is divided into the surface part and the main part.

A controlled amount of filler aggregate is supplied from the filler aggregate supply port to the surface pallet that is sequentially transferred on the conveyor, and then the supplied filler aggregate is transferred onto the surface pallet by vibration. The surface pallet that was moved was then placed on the decorative aggregate supply port with a hopper closed by a movable partition plate. The amount of decorative aggregate arranged on the movable partition plate is then removed by gradually pulling out the movable partition plate. The concrete block is sequentially transferred onto a pallet, and vibration is applied to embed the decorative aggregate into the filler aggregate.Then, mortar is supplied from the mortar supply port, and the surface obtained by applying vibration is supplied onto the concrete block molding machine. Therefore, the present invention has been completed based on the knowledge obtained to achieve the above object.

The present invention is a process in which a surface pallet is sequentially transferred on a bomber, and a series of steps include supplying filler aggregate, supplying and aligning decorative aggregate, and supplying mortar, etc.

This process is performed automatically and in conjunction with each other to create a surface area.

For example, it is supplied to a reversible concrete block molding machine or the like to manufacture concrete blocks.

Hereinafter, one embodiment of the present invention will be explained based on the drawings.
The present invention is not limited thereby.

In FIG. 1, the upper part shows the back surface molding machine of the present invention. The pallet 2 is transferred to a moving conveyor 4 by a pallet feeder 3.
be placed on top.

Examples of the moving conveyor include a belt conveyor and a roller conveyor.

At this time, although the drawing shows a pallet feeder equipped with a vertically movable cylinder and a suction device, empty pallets may also be fed by a lifting type, a clamping type, etc.

The empty pallet placed on the belt conveyor first stops at the filler aggregate supply port 5, and is supplied with an adjusted amount of filler aggregate from the filler aggregate tank 6.

At this time, as the filler aggregate used in the present invention, sand, soil, slag, ore, shavings of natural stone, synthetic resin, etc. may be used, and the size of the aggregate used for surface decoration A small one is used, and the method is determined as appropriate depending on the type of aggregate for surface decoration.

In addition, filler aggregates can be selected from a variety of colors to harmonize with decorative aggregates. For example, granite shavings may be used for granite, or materials with completely opposite colors may be used. When used as a concrete block, it can be selected as appropriate depending on the location, purpose of installation, etc.

The degree of protrusion of the surface decorative aggregate after completion can be adjusted depending on the amount of filler aggregate, so the filler aggregate supply port that receives the filler aggregate from the filler aggregate supply tank is equipped with a timer or This allows the supply amount to be adjusted by weight calculation, etc.

At this time, a device is installed on the conveyor below the filler aggregate supply port, and a vibrator 7 vibrates the supplied filler aggregate so that it is evenly distributed on the surface pallet. There is.

In addition, when the filler aggregate is supplied to the surface pallet, it is preferable to add 4.0 to 6.0% of surface water.

This is to prevent the filling aggregate from falling off the surface pallet due to centrifugal force when the surface pallet is used in a reversible concrete block molding machine if the filling aggregate is too dry.

If it is less than 4.0%, it will have little effect, and if it exceeds 6.0%, it will interfere with the bonding with mortar.

Also, a water-soluble adhesive may be added instead of or together with water.

At this time, as the water-soluble adhesive, commercially available glue can be diluted with water and used.

Next, the surface pallet supplied with the filler aggregate stops below the decorative aggregate supply port 8.

The surface decoration used in the present invention is not particularly limited, and ranges from large to small natural stones can be used, and the type thereof is appropriately selected depending on the purpose of the concrete block.

The amount of cosmetic aggregate supplied to the cosmetic aggregate supply port that receives supply from the cosmetic aggregate tank 9 can be adjusted in the same manner as the filler aggregate supply port.

The adjusted amount of decorative aggregate is first supplied through a decorative aggregate supply port equipped with a hopper 11 that is closed by a movable partition plate 10.
A controlled amount of decorative aggregate is fed onto the movable partition plate (Fig. 2A, B, C, D).

(see E).

Next, vibration is applied to the partition plate or the entire supply port to arrange the decorative aggregates in rows, and the movable partition plate is gradually opened, so that the decorative aggregates arranged on the movable partition plate are sequentially placed on the surface pallet. I will move to.

At this time, it is preferable to repeatedly open and close the movable partition plate little by little.

This is because the decorative aggregates on the partition plates are first moved onto the surface pallet by opening them, and then by closing the movable partition plate slightly, the decorative aggregates can be arranged on the surface pallet while being pressed down from the ends. .

Furthermore, there are two methods of opening the partition plate: a method in which one piece is moved to either the left or right, and a method in which the partition plate is divided into left and right parts from the center and opened (see FIG. 2F).

The decorative aggregate placed on top of the aggregate for sealing does not get stuck inside the aggregate for sealing due to the vibration from below the conveyor.

Next, the surface pallet stops under the mortar supply port 12,
A controlled amount of mortar is supplied from the mortar tank 13.

At this time, feeding mortar onto the decorative aggregate is
When this surface pallet is fed to a reversible concrete block molding machine, it is added as a binding material to prevent the filler aggregate and decorative aggregate on the surface pallet from collapsing due to centrifugal force, and the amount of filler aggregate and decorative aggregate on the surface pallet is It is preferable to lightly cover the aggregate.

Further, it is preferable for the mortar to contain 1 to 10% of water in terms of bonding.

Also, a water-soluble adhesive may be added instead of or together with water.

At this time, the water-soluble adhesive preferably includes a mortar adhesion enhancer that improves the miscibility, adhesion, water resistance, etc. of cement and mortar.

As the mortar adhesion enhancer, for example, polymer emulsion type, acrylic type, ethylene vinyl acetate type, synthetic rubber type, etc. can be used.

Note that a step of pressing the decorative aggregate from above or a vibrating step may be added during the movement to the mortar supply port.

The surface pallet thus formed is fed, for example, to a concrete block forming machine using an inverting machine, and is integrated with concrete to form a natural stone concrete block.

At this time, the concrete block was conventionally supplied to the reversible concrete block molding machine by rotating it by 180 degrees, but it is preferable to supply it at an angle of 90 degrees or 135 degrees to prevent the aggregate from falling.

Furthermore, concrete block forming machines use concrete depending on the purpose.

Therefore, even cemented carbide concrete and concrete with large slump can be used as appropriate depending on the purpose.

For example, when using cemented carbide concrete, the degree of hardness of the concrete differs slightly depending on the compaction method, but regardless of the compaction method, excess water (
It is necessary to prevent aggregates (including cement) from flowing out and contaminating the exposed aggregates at the surface.

However, if the amount of water is too small, the adhesion between the aggregate exposed on the surface and the cemented carbide concrete will be weak.

Therefore, water (including cement) oozes out during compaction, but it needs to be hard enough to prevent it from flowing out, and a slump of about 0 to 1 cm is appropriate.

It is not limited to this.

In addition, when using concrete with a slump of 10 cm or more, mortar is not necessary, and it is preferable to use a split type formwork.

After curing, the filler aggregate other than that attached to the concrete can be removed at the same time as the surface pallet is demolded, and the surface of this is treated with water or air to obtain the concrete product of the present invention.

At this time, in the past, the surface was treated by polishing or scraping, but with the present invention, an extremely clean finished product can be obtained by simply spraying air or water lightly, without causing pollution due to industrial waste as in the past. Not at all.

In the operation of the present invention, these operations are performed in series.

In other words, supplying connected empty pallets, supplying filler aggregate, supplying decorative aggregate, alignment using automatic partition plates, vibration,
The supply of mortar and the supply to the block molding machine are carried out simultaneously by the control device, and when these operations are completed, the blocks are sequentially sent to the next process.

At this time, if the conveyor is a roll conveyor, the pallets arranged in a row on the conveyor will be pushed out when empty pallets are fed onto the roll conveyor, and can be sent out one by one and moved to the next process.

Alternatively, the conveyor may be a movable belt conveyor, and each process and drive may be controlled to sequentially send out the products.

〔effect〕

According to the present invention, the bare surface of the concrete is not exposed even at the joints, and it is possible to mechanically and efficiently mass-produce natural stone shaken concrete blocks, which are natural products.

At this time, in the conventional splitton block, fine decorative aggregates of a certain size were only slightly exposed on the surface, but in the present invention, from large to small pieces, In addition, decorative aggregates of unspecified size combinations can be made to protrude far more than before, and the beauty of natural stone can be fully exhibited even on concrete blocks.

Furthermore, since mechanical mass production is now possible, production costs are significantly lower than conventional products, and work efficiency is further improved.

Furthermore, since various natural stones can be used for the surface, various designs can be created by combining them, so when used for residential land development, stone walls, and landscaping work, the texture and individuality of natural stones can be reproduced. Furthermore, when used for civil engineering works such as embankments, riverbeds, and tunnel entrances and exits in national parks and their branches, it harmonizes with the natural environment and contributes to environmental protection. .

Also, there is no longer any fear of pollution caused by demons, which was the case in the past.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an automatic surface molding machine of the present invention, and FIG.
Figures A, B, C, D, E, and F are diagrams showing opening and closing of the partition plate. Engineer: Surface forming machine 2: Pallet 3: Pallet feeder 4: Conveyor 5: Filling aggregate supply port 6: Filling aggregate tank 7: Vibrator 8: Decorative aggregate supply port 9: Cosmetic Aggregate tank 10: Movable partition plate 11: Hopper 12: Mortar supply port 13: Mortar tank -14= Concrete block forming machine 15:
Filler aggregate 16: Decorative aggregate 17: Mortar (A (C)) Figure 2 (D (F)

Claims (14)

[Claims] (1) In a method for manufacturing natural stone concrete blocks, an adjusted amount of filler aggregate is supplied from a filler aggregate supply port to a surface pallet that is sequentially transferred on a conveyor, and then it is supplied with vibration. The aggregate for finishing is made uniform on the surface pallet, and then the surface pallet that is moved is placed on the decorative aggregate supply port which has a hopper closed with a movable partition plate. A controlled amount of decorative aggregate is supplied from the decorative aggregate supply port on the top, and the supplied filler aggregate is made uniform by vibration, and then the movable partition plate is gradually pulled out to create a movable partition. The decorative aggregates arranged on a board are sequentially transferred onto a surface pallet, and vibrations are applied to embed the decorative aggregates into the filler aggregates.Then, mortar is supplied from the mortar supply port and vibrations are applied. A natural stone concrete block surface manufacturing device characterized by supplying the surface of a natural stone concrete block to a block forming machine and then integrating it with concrete. (2) The apparatus for manufacturing a surface portion of a natural stone concrete block according to claim 1, wherein the movable partition plate moves while being accompanied by left and right vibrations. (3) The apparatus for manufacturing a surface portion of a natural stone concrete block as set forth in claim 1, wherein the movable partition plate is opened while repeating opening and closing in small increments. (4) The apparatus for manufacturing a surface part of a natural stone concrete block according to claim 1, wherein the movable partition plate is divided from the center and moves from side to side. (5) The natural stone concrete block surface manufacturing apparatus according to claim 1, further comprising a press machine that presses the decorative aggregate from above on the way to the mortar supply port. (6) The natural stone concrete block surface part manufacturing apparatus according to claim 1, wherein the surface part is supplied to the reversible concrete block molding machine by centrifugal force. (7) The natural stone concrete block surface manufacturing device according to claim 1, wherein the natural stone concrete block surface part manufacturing device is supplied to a reversible concrete block molding machine at an angle of 90 degrees or 135 degrees. (8) The natural stone concrete block surface portion according to claim 1, to which vibration is applied from any one of the above, below, right, left, or a combination of two or more of these directions while moving or stopping. Manufacturing equipment. (9) In a method for manufacturing natural stone concrete blocks, an adjusted amount of filler aggregate is supplied from a filler aggregate supply port to a surface pallet that is sequentially transferred on a conveyor, and then the filler aggregate is supplied while being vibrated. The aggregate for finishing is made uniform on the surface pallet, and then the surface pallet that is moved is placed on the decorative aggregate supply port which has a hopper closed with a movable partition plate. A controlled amount of decorative aggregate is supplied from the decorative aggregate supply port on the top, and the supplied filler aggregate is made uniform by vibration, and then the movable partition plate is gradually pulled out to create a movable partition. The decorative aggregates arranged on a board are sequentially transferred onto a surface pallet, and vibrations are applied to embed the decorative aggregates into the filler aggregates.Then, mortar is supplied from the mortar supply port and vibrations are applied. A method for manufacturing a surface part of a natural stone concrete block, which comprises supplying the surface part of a natural stone concrete block to a block molding machine. (10) Add 4.0 to 6.0% surface water to the filler aggregate and/or
The natural stone concrete block surface manufacturing method according to claim 9, further comprising a water-soluble adhesive. (11) The method for producing a surface part of a natural stone concrete block according to claim 9, characterized in that the decorative aggregate is pressed from above while being transferred to the mortar supply port. (12) The method for producing a surface portion of a natural stone concrete block according to claim 9, wherein the mortar contains water and/or a water-soluble adhesive. (13) The natural stone concrete block surface portion according to claim 9, to which vibration is applied from any one of the above, below, right, left, or a combination of two or more of these directions while moving or stopping. Production method. (14) The method for manufacturing a surface part of a natural stone concrete block according to claim 9, wherein the concrete is cemented carbide concrete with a slump of 0 to 1 cm.