JPS6345004A - Method and device for manufacturing concrete secondary product with irregular pattern - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing secondary concrete products, such as blocks for retaining walls, having an uneven pattern on the product surface using a press nQ.

(Prior art) As a conventional method for forming a surface area shape in blocks for retaining walls, etc., two blocks are integrally molded facing each other with continuous surface parts, and after curing and hardening, the blocks are divided into two parts from the center to create unevenness. The split method creates a pattern on the surface of the block, and the required pattern is engraved on the surface of the pallet, and after pouring concrete material into the formwork body during manufacturing, the pallet with cement mortar is placed in the formwork. There are two types: a fixed surface pallet method in which a pallet is loaded into a mold, and a variable surface pallet method in which a plate for forming a pattern that can be changed at once is attached to the surface of the pallet, and the pallet with cement mortar is loaded into a formwork.

(Problems to be Solved by the Invention) However, the above-mentioned split method requires a large amount of investment in cutting machine equipment and has problems in that the incidence of defective products during the cutting process is high.

In addition, in the fixed surface pallet method and variable surface pallet method,
Although the split method does not require expensive cutting equipment, the surface pallet remains attached to the product for a whole day until the completion of rolling, so the T factory can reduce the number of products produced per day. It is necessary to prepare patterned pallets and patterned plates in the planned number and number of times, which increases the negative 111 in terms of equipment investment.

In addition, with these surface pallet methods, it is unavoidable that concrete material or cement mortar will enter and adhere to the surface of the pattern forming mold. Removal and cleaning of concrete and mortar that have been removed requires a great deal of effort and effort, which is another problem.

Furthermore, in the one-sided pallet method, mortar, which is different from the concrete of the main body, is used as the material for the pattern-forming surface, so the adhesive surface tends to peel off, causing many problems in terms of strength.
The problem is that it is susceptible to running water abrasion.

Therefore, the purpose of the present invention is to eliminate the need for a large investment in mechanical equipment, simplify the cleaning work of the pattern forming mold surface, prevent peeling of the product surface, be resistant to running water abrasion, and ensure that the entire product is resistant to running water wear. To provide a manufacturing method and installation method for a concrete secondary product with an uneven pattern, which can obtain high strength even when the concrete is used.

(Means for solving the problem) The gist of the manufacturing method of the present invention will be explained below using reference numerals in the attached drawings. After the spraying, compression molding is performed using an old press mold 1 provided with a mold surface part 2 for forming an uneven pattern. The uncured product 8 is loaded onto the surface of the transferred uncured product 7, turned upside down and removed from the mold, and supported on the surface pallet 6-A.

Next, the gist of the manufacturing apparatus of the present invention is that a dispersing means 9 for dispersing the fluidity imparting material 3 on the surface of the filled concrete material 5 in the formwork 4, and a mold surface section 2 for forming an uneven pattern on the pressurizing surface are provided. A press mold 1 and a surface pallet 6 having through holes 8 through which the fluidity imparting material 3 passes, and supporting from below the pattern-formed surface portion of the uncured product 7 which has been turned upside down and removed from the mold. It is something that I am enjoying.

(Function) In the illustrated embodiment, after the concrete material 5 is charged into the formwork 4 by the material charging means 10 such as a moving hopper, the formwork 4 and the concrete material 5 are subjected to appropriate vibrations by an internal or external vibrator 11. ! will be played. In parallel with the application of this vibration, a water spraying means 9 installed in the moving hopper or separately installed is applied to the surface of the filled concrete material 50.
A fluidizing material 3, typically made of wood, is spread.

After that, the press-h type 1 is lowered gA by a hydraulic mechanism etc.
! The uneven pattern of the mold surface portion 2 is transferred to the surface portion of the uncured product 7 which has been subjected to compression molding. After press molding is completed,
Press--Move Type 1 back up to the standby position. After that, 1, for example, a surface pallet with a 2L suction cup 12a is inserted into the tip of the arm that rotates 1111 in a vertical plane centering on the horizontal axis. and loaded onto the surface of uncured !8!W7.

For example, the plunger 1 of the residue pressure operation cylinder
When the surface pallet 6 is fixedly held at the loading position by the surface pallet holding means 13 using the surface pallet 3a, the formwork 4 is turned upside down, and the surface pallet 2 toro is supported from below by the elevator 14. Thereafter, the uncured product 7 is demolded while being placed on the surface pallet 6 and transported to a curing yard. After curing and hardening, the finished product 7 is removed from the Menbaret 2 Toro and shipped.

Examples of the fluidity imparting material 3 that imparts fluidity to the surface of the filled concrete material 5 and promotes the floating of mortar include cold water, hot water, colored water, coloring agents, M type agents, hardening retardants, hardening accelerators, etc. You can select and use as appropriate.

When spreading the fluidity imparting material 3 such as a book onto the surface of the filled concrete 5, if vibration is applied using an internal or external vibrator before, during or after the spreading, the mortar will lift up earlier and the concrete material will It is even more densely packed.

The pattern-forming mold surface part may be integrally molded with the press upper mold, or it may be manufactured as a separate member from the press upper mold and fixed to the press upper mold by adhesive, vacuum adsorption, magnetic adsorption, etc. As for the material of the mold surface part, rubber, plastic, cast iron, etc. can be selected as appropriate depending on the form of the product and the installation cost.

The through-holes of the surface pallet 6 can be formed by providing a plurality of small circular openings at equal intervals as shown in FIG. 5, or by providing one large rectangular opening in the center. The shape, size, number, and position of the through holes 8 of the valley 7 are not particularly limited.

(Effects of the invention) As shown in Fig. 11, the mold surface part 2 for forming the uneven pattern is
By the press upper mold l equipped with ・〒! The concrete material 5 is pressure-molded in the frame 4, and the uneven pattern of the mold surface 2 is transferred to the surface of the uncured product 7, so unlike the conventional split method, the pattern is formed using a large and expensive method. No mechanical equipment is required.

In addition, since the press upper mold 1 immediately separates from the uncured product 7 after pressing and molding and is used for the next pressing and molding, the surface pallet is attached to the product until curing and curing is completed. Unlike the conventional surface pallet method, manufacturing plants do not need to prepare pattern engraving surface pallets or pattern forming plates for the number and number of times a product is to be assembled per day.
The negative 111 points in capital investment will be significantly reduced.

In addition, even if the concrete material 5 adheres to the mold surface 2 of the press upper mold, it can be compressed into the press upper mold after each compression molding process or after checking the time interval during which the adhered concrete does not harden. Adhering concrete can be easily removed by spraying air, water, etc., and the removal work only needs to be carried out on a single press mold, reducing the labor cost required to clean the mold surface. can.

In the present invention, the fluidity imparting material 3 is sprinkled on the surface of the filled concrete material 5 before compression molding with the press upper mold l provided with the mold surface part 2 for forming an uneven pattern, so that the mortar in the concrete material While the quality of the aggregate will rise moderately, the coarse aggregate such as gravel and crushed stone will sink relatively, and as a result,
A block product with properties similar to natural stone can be easily obtained without coarse aggregate remaining and protruding excessively on the product surface.

Particularly in the case of "Final Part ■", after the press molding is completed, the fluidity imparting material 3
A surface pallet 6 having through-holes 8 through which the product 7 can pass is loaded onto the surface of the product 7, and the pattern-formed surface of the uncured product 7, which has been turned upside down and demolded, is supported from below by the surface pallet 6. Therefore, of the concrete mixing water, curing water, and fluidity imparting material 3 typically made of water, the amount unnecessary for setting and hardening of the concrete leaks out from the through holes 8 of the surface pallet 6. There is no accumulation on the inner bottom surface of the surface pallet.
Therefore, it is possible to prevent the pattern-formed surface portion from losing its shape, and it is also possible to reduce the water-to-cement ratio of the entire product to increase its strength, and it is also possible to reduce the amount of cement used.

In addition, since the air between the surface pallet 6 and the filling concrete material 5 also escapes through the drainage holes 8 of the surface pallet 6, air bubbles are less likely to form on the surface of the product, the porosity is reduced, and the strength of the product is increased. Become.

Furthermore, in JJ, even if the coarse aggregate settles moderately due to the use of the above-mentioned yi-mobility imparting material 3, the main body part of the product and the uneven pattern forming surface part are composed of the same concrete material 4. Therefore, compared to conventional products where the main body is made of concrete and the entire surface is made of mortar, the surface and main body are completely integrated. Therefore,
A product that does not peel off on the surface and is resistant to freezing and thawing in cold regions can be reliably obtained, and the patterned surface is also resistant to running water.

[Brief explanation of the drawing]

The drawings show one embodiment of the method of the present invention, and Fig. 1 is a schematic IJI diagram showing the flowability imparting material being spread after filling the formwork with concrete material, and Fig. 2 shows a surface pallet in the formwork. Figure t53 is a schematic explanatory diagram when the mold is turned upside down and the pallet is supported by an elevator. Figure 4 is a vertical cross-sectional view of the demolded uncured product and the surface pallet.
FIG. 5 is a plan view showing an example of the surface pallet, and FIG. 6 is a plan view showing another example of the surface pallet.

Claims (2)

[Claims] (1) After spreading the fluidity imparting material 3 on the surface of the concrete material 5 filled in the formwork 4, compression molding is performed using the press upper mold 1 provided with the mold surface part 2 for forming an uneven pattern, and the press upper mold 1 is raised and returned to the standby position, the fluidity imparting material 3
A surface pallet 6 having through-holes 8 through which the material can pass is loaded onto the surface of the uncured product 7 onto which the uneven pattern has been transferred, and the mold 4 is turned upside down to remove the uncured product 7 from the mold. Cured product 8
A method for manufacturing a concrete secondary product with an uneven pattern, characterized in that the concrete secondary product is supported on the surface pallet 6. (2) A formwork 4 filled with concrete material 5, a dispersing means 9 for dispersing the fluidity imparting material 3 onto the surface of the filled concrete material 5, and a dispersing means 9 for dispersing the fluidity imparting material 3 onto the surface of the filled concrete material 5, and a dispersing means 9 for dispersing the fluidity imparting material 3 onto the surface of the filled concrete material 5; 5, a mold surface part 2 for forming an uneven pattern provided on the pressurizing surface of the press upper die 1, and a through hole 8 through which the fluidity imparting material 3 passes. Concrete 2 with an uneven pattern is made up of a surface pallet 6 that is loaded onto the surface of the transferred uncured product 7 and supports from below the pattern-formed surface of the uncured product 7 which is turned upside down and removed from the mold. Manufacturing equipment for the following products.