JPH021641B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a lamination molding method for covering the surface of a concrete block with an elastic buffer layer.

<Prior art> The closest prior art to the present invention is the
-There is an invention in Publication No. 33670. A mixture of crushed rubber chips and adhesive is spread on the bottom of a mold, immediately sprinkled with cement, and the mold is vibrated to spread vinyl acetate resin into the voids in the mixture. Fill it inside, fill it with fresh concrete, vibrate it again, solidify it, and then remove it from the mold.
That is what it is.

<Problems to be solved by the invention> In the conventional technology, a sticky rubber mixture made by mixing elastic rubber chips or an elastic material with an adhesive is directly poured into a concrete formwork while applying vibrations, and then the mold is poured. Flatten it with a trowel so that it adheres to the bottom of the frame, and then apply emulsion adhesive on top of it, allowing the adhesive to penetrate into the gaps between the elastic materials and bonding. The concrete and elastic rubber layer were once again added to the mold while being vibrated to finish the upper surface.The concrete and the elastic rubber layer were solidified together in the mold, and after hardening, the product was removed from the mold.

In this technique, the bonding of rubber chips to each other or to concrete is carried out exclusively within the formwork. Therefore, it is difficult to supply a fixed amount of sticky elastic material to the bottom of the mold in a layered manner, and it takes time and effort to flatten the bottom of the deep mold by tapping the top surface with a trowel. In addition, since resin is filled into the voids and bonded after flattening, it takes effort and time to form and finish the elastic layer on the surface.

In addition, when the surface shape is uneven, the bottom surface is deep because the formwork has the height of the product, and the workability is poor to fill and finish the bottom surface layer thinly and uniformly.As a result, it becomes thick and a large amount of material is used. I will do it.

Furthermore, since all the filling work is done in the same mold, it takes a long time for the product to solidify and be removed from the mold, and the mold has to be left alone during that time, making it extremely inefficient. Ta.

The purpose of the present invention is to make it possible to form a thin and uniform surface layer on an uneven surface even with a sticky material.
Another object of the present invention is to provide a molding method in which the concrete layer is coated with an elastic material layer and immediately removed from the formwork to firmly bond the concrete layer and the rubber elastic layer.

<Means for Solving the Problems> In order to achieve the above object, the present invention involves mixing an elastic material such as rubber chips to be laminated and coated with adhesive viscous liquid or viscous powder particles, and then preparing a dish-shaped surface pallet in advance. A required amount of concrete is filled to form a coating surface layer, and when molding the product, a dish-shaped surface pallet is supplied to the bottom of the formwork, and dry concrete is immediately supplied to the top surface of the surface pallet and vibration pressure molding is performed. Alternatively, after forming the concrete part, cover the top surface of the formwork with a dish-shaped surface pallet, perform vibration and press forming from the top surface, and immediately remove the mold to the top or bottom of the formwork and layer it with concrete during the curing process. The material was made to coagulate firmly with the elastic material layer.

This reduces the time required to fill the surface layer during product molding, and even if the surface has irregularities, the surface formation work is performed using a low-height pallet, making it easy to coat thinly. Since it is an instant mold removal method, production efficiency can be significantly improved.

<Function> In the lamination molding method of the present invention, the elastic material to be laminated is prepared by adding adhesive viscous liquid or viscous powder to a dish-shaped surface pallet that also serves as a bottom plate, and filling the desired surface pallet with an elastic material mixed with the elastic material rubber, which also serves as a bottom plate. Since the layer is formed, the surface finish is good, and even if the surface shape is uneven, it can be formed thin and uniformly.

In addition, it is easy to apply adhesives, cement, viscous liquid, etc. directly to the top surface of the pallet depending on the shape of the joint with the concrete and if necessary, making it possible to strengthen the bond between the concrete and the covering elastic material. Ta.

<Example> Figure 1 is an overall front view showing the forming situation, Figures 2 to 6 are explanatory diagrams of the joining operation of the elastic material and concrete using a dish-shaped pallet, and Figures 8 and 9 are the forming process. FIG.

1 is a resin that binds the elastic material, 5 is a dish-shaped pallet that forms the covering elastic material layer, 11 is a press plate that presses the upper surface of the concrete within the formwork, 13 is a concrete supply hopper, and 16 is a vibrator. .

The elastic materials forming the buffer layer herein include fillers that fill gaps between the materials and additive materials that enhance waterproofness and durability.

Next, the molding method of the present invention will be explained. First, in order to create a buffer layer on the upper surface of the concrete, a mold release agent 6 is applied to the inner surface of the dish-shaped pallets that are sequentially fed onto the roller conveyor 9, and then moved to the table vibrator 15 and mixed with a mixer (not shown). When a resin liquid is added and mixed to bond the elastic material A of the rubber chips together to form a coating layer that enables bonding with concrete, a film having adhesive strength is formed on the surface of the rubber chips. Then, the rubber chips are put into the dish-shaped pallet 5 while being vibrated under the elastic material supply hopper 8 storing the rubber chips 4, and the concrete to be laminated is smoothed with a trowel to form a predetermined shape surface.

Since the thickness of the buffer layer is about 10 m/m, the height of the dish-shaped pallet 5 is also low, so even if it has an uneven shape, it is easy to finish it by hitting it with a trowel so that it adheres well to the bottom surface.

In this manner, the elastic material is formed in the dish-shaped pallet 5 so that the rubber chip coatings are bonded to each other, and then moved to a rack (not shown) to bond the buffer layer to promote initial hardening.

On the other hand, in order to coat and mold the buffer layer A of the rubber chips 4, the initially hardened dish-shaped pallet 5 is placed on the fixing rod 19 of the dish-shaped pallet, and then moved through the lifting cylinder 20 as shown in FIG. formwork 17
Fix it to the bottom of the

Next, as shown in Fig. 3, in order to layer concrete on the upper surface 5' of the dish-shaped pallet, the sliding cylinder 14 is moved differentially while applying vibration, and concrete is fed into the formwork 17 and filled up to the upper surface of the formwork. Then, the sliding hopper is returned to its normal position, and the press plate 11 is lowered as shown in FIG. 5 to vibrate and apply pressure to finish the upper surface. Next, the press plate 11 is returned to the press device 10, and in order to remove the molded product from the mold, the lifting cylinder 20 is moved differentially, and the lower surface of the dish-shaped pallet 5 in the mold is pushed up with a rod to the upper side of the mold. Remove the mold.

The demolded product F is immediately moved to a curing room by an off-bearer (not shown). Subsequently, the dish-shaped pallet 5 to be molded next is placed on the fixing rod 19 on the upper surface of the mold, and the dish-shaped pallet is fixed to the bottom of the mold in the same manner as described above, and the next molding is carried out.

When the dish-shaped pallet is peeled off from the product F after the initial curing of the product formed in this way is completed, the concrete layer C and the buffer layer A made of elastic material are firmly bonded to the adhesive coating of the rubber chips and the concrete, resulting in an elastic surface. This allows concrete product F to be produced.

An example of an instant demolding method using a dish-shaped pallet has been described above, but the forming method of the present invention does not necessarily limit the dish-shaped pallet to the lower part of the formwork. Then, cover the top surface with a plate-shaped pallet filled with a layer of rubber chips, press it with a press plate, and remove it from the top of the mold, or turn it over and release it from the bottom. The range of applications is extremely diverse, such as stopping at the bottom to layer concrete, then descending to the bottom and layering another different material in the space created.

Furthermore, since the molding method of the present invention uses a dish-shaped pallet, it is easy to mold and finish the rubber chips into a porous buffer layer in advance, so that water-permeable products that also have elasticity can be molded efficiently. In addition, in order to strengthen the bond with the concrete layer C, hydrophilic resin or emulsion is applied to the top surface of the dish-shaped pallet as shown in Figure 7, and cement powder is further dispersed and the bonding area is increased to facilitate peeling. It can be freely formed according to the intended use of the product, such as by providing an uneven shape that increases resistance.

An example of the composition of the elastic material A and the concrete C of the above embodiment is shown below.

[Elastic material]

Crushed tire rubber chips (particle size 1.5 to 3.0 mm) 600 g Polyester resin 118 g Naphthene cobalt 6 g Methyl ethyl ketone peroxide 12 g Calcium carbonate 100 g [Concrete] Cement 1000 g Water 370 g No. 6 crushed stone (particle size 5 m/m to 13 m/m ) 1687g Sand 3052g <Effects of the invention> The molding method of the present invention involves filling a dish-shaped pallet or the like with the required amount of the elastic material layer in advance to form the surface part, and then joining the surface pallet to the concrete part during product molding. This eliminates the process of forming the elastic material layer within the molding frame, so even elastic materials that are highly viscous and difficult to fill can be filled and molded in advance. can be set freely.

This makes laminated molding of concrete and non-concrete easy, and because dry concrete is immediately demolded, equipment costs for formwork etc. are greatly reduced, production costs are significantly reduced, and the economic effects are extremely high.

[Brief explanation of drawings]

Figure 1 is an overall front view showing the molding situation, Figures 2~
Figure 6 is an explanatory diagram of the molding operation, Figure 7 is another example of filling with rubber chips, Figures 8 and 9 are perspective views of the molded product, and Figure 10 is a cross section of the product laminated in three layers. It is a diagram. A... Buffer layer of elastic material, C... Concrete, 2... Emulsion, 3... Cement, 7...
...Mold release agent nozzle, 12...Main hopper, 18...
Elevating board.

Claims (1)

[Claims] 1. Adding and mixing a synthetic resin adhesive or adhesive viscous liquid to a granular or piece-like elastic material to form a film having adhesive strength on the surface of the elastic material, and using the elastic material as a concrete product. Fill the surface pallet with the required thickness to form a buffer layer and fill it so that the elastic material coatings are mutually bonded to form a covering layer. It is supplied to the upper surface and laminated with concrete in the same formwork, and pressure vibration molding is performed during or at the end of the lamination of the surface pallet and concrete to create an elastic material using the bonding force of the adhesive film formed on the elastic material of the surface pallet. The concrete is immediately removed from the mold, and during the curing process, the adhesive coating of the elastic material bonds the elastic materials in the pallet to each other, and the top surface of the pallet coating layer and the concrete surface hardened by the chemical reaction of the cement. A method for forming composite concrete products with a buffer layer characterized by increasing strength. 2. A method for forming a composite concrete product with a buffer layer, which is characterized in that the elastic material layer is porous in the forming method according to claim 1. 3. A method for molding a composite concrete product with a buffer layer, characterized in that the elastic material is a crushed rubber tire in the molding method according to claim 1. 4. A method for forming a composite concrete product with a buffer layer, which comprises applying or dispersing a bonding material that promotes adhesive strength on the upper surface of the coating layer of the surface pallet in the method according to claim 1.