JP2014046684A - Production method of concrete panel with convexoconcave decorative pattern - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method of a concrete panel that can express a convexoconcave pattern such as a panel of natural wood with high quality and naturally.SOLUTION: An exclusive frame is installed on a pedestal, a mold member for forming a decorative pattern is laid in an inside of the exclusive frame, further an outer mold frame is arranged on top of the exclusive frame, and concrete is installed in a space formed by the forming mold and the outer mold frame.

Description

  The present invention relates to a method for producing a concrete panel that enables formation of a wide variety of uneven decorative patterns with high quality on the surface.

  Conventionally, a concrete panel in which an uneven decorative pattern such as a grain pattern is formed on the surface has been highly evaluated as a surface decorative board expressing natural beauty on concrete. As a technique for forming a grain on the surface of such a concrete panel, the actual construction method of releasing concrete is known. In this method, a formwork made of wood boards such as cedar and cypress is created on the inner surface, concrete is placed in this formwork, and after the concrete is hardened, the formwork inside the formwork is placed on the concrete surface. A concavo-convex pattern is obtained (Non-Patent Document 1).

  However, when concrete panels are molded by this method, the air bubbles mixed in the concrete during curing are evacuated by buoyancy and accumulate in the irregularities on the wooden board surface, which is the formwork, resulting in a burrow on the pattern surface side of the concrete panel Has occurred. Further, the separator marks necessary for supporting the formwork at a predetermined position remain on the concrete surface, which is a factor that gives an artificial impression in expressing a natural grain pattern.

  Moreover, since it is necessary to install and assemble the formwork at the site, much labor is required compared with the conventional construction method. Furthermore, for several days after the concrete is placed, the formwork remains installed for curing, and a large amount of formwork material is required.

  In order to solve this, there is also a technology to give it an appearance that imitates the actual construction method in the factory, but in that case, as a mold for forming a grain pattern, for example, molding made of synthetic resin or cement that simulates grain A board is created and attached to the inside of the formwork for concrete placement.

  However, with this method, only the pattern of the mold that was originally created can be formed, and when trying to manufacture panels with various patterns, it is necessary to create a molded plate for each pattern, which is laborious and expensive.

  In addition, it is necessary to chamfer the pattern forming surface edge of the concrete panel to prevent breakage of the concrete panel edge, and there is a part of the pattern forming surface of the concrete panel where the pattern is not transferred, and the finished concrete panel There is a problem that the joints between the panels become conspicuous when installing the panels continuously.

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  This invention provides the manufacturing method which eliminates the various problems in manufacture of the conventional concrete panel with a grain pattern. That is, an object of the present invention is to provide a method and an apparatus for producing a concrete panel having a fine and clean finish without a burrow or separator mark on the surface of the concrete panel, and having a natural and diverse uneven grain pattern. .

As a result of intensive studies in order to solve the above-mentioned problems, the present inventor provided a concrete panel with an uneven decorative pattern produced by installing a pattern forming mold made of natural wood in a concrete panel manufacturing apparatus in a factory. The present inventors have found that the problems can be achieved and have completed the present invention. That is, the method for producing a concrete panel of the present invention includes:
A dedicated frame is installed on the pedestal, a pattern forming mold is laid inside the dedicated frame, and an outer mold frame is arranged so as to overlap the dedicated frame. It is characterized in that when concrete is placed in a space surrounded by a pattern forming mold and an outer mold, the pattern of the pattern forming mold is transferred to the concrete surface after curing.

  Further, the pattern forming mold is made of a natural wood board having a surface uneven shape.

  And the natural wood board surface is baked with a flame or the like and carbonized to emphasize the unevenness of the grain.

  Furthermore, a manufacturing apparatus used in a method for manufacturing a concrete panel with an uneven decorative pattern, comprising: a pedestal for supporting the apparatus; a pattern forming mold member; a dedicated frame for fixing the mold member; and a concrete to be placed. An outer mold frame to be held, and a fall prevention hook and a locking member provided on the outer mold frame to hold the outer mold frame so as to be freely opened and closed are provided.

  In the present invention, by placing concrete on a pattern forming mold and removing it after curing, the pattern of the pattern forming mold can be transferred to the surface of the concrete panel, and a product with high added value can be efficiently produced. .

  Natural wood board material can be used for the pattern forming mold. In this case, by replacing the board material, a wide variety of different natural patterns can be formed.

  The surface of a natural wood board is baked with a flame such as a burner, and then the carbonized portion is scraped off and the wood is raised to form a pattern forming mold, whereby a clear pattern of the wood is formed.

  Furthermore, the concrete panel manufacturing apparatus of the present invention includes a pedestal that supports the apparatus, a pattern forming mold member, a dedicated frame that fixes the mold member, an outer mold frame that holds the concrete to be placed, and the outer frame. Because it is equipped with a fall prevention hook and locking member that is provided on the mold and holds the outer mold in an openable and closable manner, the pattern forming mold is installed horizontally upwards, and concrete is placed on it. Produces high-quality products without burrows or separator marks. Also, by narrowing the chamfer of the pattern forming surface end of the concrete panel from about 2 cm to about 2 mm, the margin of the end of the pattern forming surface of the concrete panel is reduced, and the seam when the concrete panels are continuously arranged Is inconspicuous.

  The present invention is described in detail below. In the present invention, a concrete panel having an uneven decorative pattern is manufactured by installing a pattern forming mold such as natural wood board in a concrete panel manufacturing apparatus in a factory and placing concrete on the pattern forming mold. . By placing the pattern forming mold face up and horizontally and placing concrete on it, the air bubbles inside the concrete will rise upwards, forming a nest hole on the pattern side that will be the surface of the product Not. There is no need to support the formwork vertically and no separator marks are formed. In addition, in the present invention, the chamfering of the pattern forming surface end of the concrete panel is reduced from about 2 cm to about 2 mm, and the plain portion at the end of the concrete panel is narrowed so that the seam is not noticeable when the products are continuously arranged. ing. By replacing the pattern-forming type natural wood board, different wood grain patterns are formed each time, and it is possible to produce products with a wide variety of natural grain.

It is explanatory drawing which showed the concrete panel manufacturing method with an uneven | corrugated decorative pattern which concerns on this invention. It is a top view of the manufacturing apparatus of the concrete panel with an uneven | corrugated decorative pattern of this invention. FIG. 3 is a front view of FIG. 2. FIG. 3 is a side view of FIG. 2. FIG. 3 is a partial cross-sectional explanatory view taken along line AA in FIG. 2. FIG. 3 is a partial cross-sectional explanatory view taken along line BB in FIG. 2. FIG. 3 is a partial cross-sectional explanatory view taken along the line CC in FIG. 2.

  A typical example of a production apparatus for producing a concrete panel according to the present invention is shown in FIG. The manufacturing apparatus of the present invention installs the dedicated frame 2 on the pedestal 1 and spreads the pattern forming mold 3 in the space surrounded by the dedicated frame 2. On the dedicated frame 2, a longitudinal outer mold recess 4a is installed on one side in the longitudinal direction and a longitudinal outer mold projection 4b is installed on the other side so that the concavo-convex portion faces inward. The outer frame 5 in the short side direction with no irregularities is installed in the short side direction. The pattern of the pattern forming mold 3 is formed on the concrete surface by placing concrete 6 in a space surrounded by the dedicated frame 2, the pattern forming mold 3, the longitudinal outer mold frame 4 and the short side outer mold frame 5 and curing it. Is transcribed.

  Moreover, it is desirable that a reinforcing bar (not shown) is embedded in the concrete panel in the present invention.

  The pattern forming mold 3 in the present invention is not particularly limited in material, shape, size, etc., as long as it has a strength capable of transferring a concavo-convex pattern onto the concrete surface. For example, natural wood, resin, Rubber or metal can be used. In particular, when a natural wood board is used, the thickness is set to 15 mm or more in order to avoid deformation due to drying or the like. Moreover, it is preferable to apply a mold release agent to the pattern forming mold as a means for preventing chipping when the frame is removed.

  In the present invention, the surface of a natural wood board is baked with a flame such as a burner, and then the carbonized portion is shaved off to raise the grain, thereby forming a pattern with a clear grain. The

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In FIGS. 1 and 3 to 7, reference numeral 1 denotes a pedestal, which serves as a foundation that supports the concrete panel manufacturing apparatus with an uneven decorative pattern from below.

  The dedicated frame 2 is placed on the base 1 and supports the pattern forming mold 3 from the periphery. The thickness of the dedicated frame 2 is appropriately set in consideration of the thickness of the pattern forming mold 3 and the unevenness of the decorative pattern.

  The pattern forming surface edge of the concrete panel needs to be chamfered to make it difficult to cause chipping or breakage.

  The dedicated frame 2 is installed on the pedestal 1, and the pattern forming mold 3 is spread in the internal space of the dedicated frame 2. The pattern forming mold 3 is obtained by processing natural wood into a plate shape, and its shape is large enough to fit in the dedicated frame 2. The surface of the natural wood plate is fired with a flame or the like, and then the carbonized portion is scraped off to emphasize the unevenness of the grain.

  After the pattern forming mold 3 is installed, the longitudinal outer mold frame concave mold 4 a is installed on one side in the longitudinal direction of the dedicated frame 2. On the other side, a longitudinal outer form convex part 4b is installed. At this time, it is installed so that the concave side of the longitudinal mold recess 4a and the convex side of the longitudinal mold convex 4b face inward.

  The thicknesses of the outer mold frame 4 in the longitudinal direction and the outer mold frame 5 in the short side direction satisfy the required thickness of the concrete panel obtained by the structural calculation.

After the longitudinal outer mold frame 4 and the short side outer mold frame 5 are installed on the dedicated frame 2, the attached fall prevention rod 8 is fixed to the latch 9 on the outside of the outer mold frame 5. The above-described longitudinal outer mold frame 4 and the short-side outer mold frame 5 are fixed at predetermined positions by fixing the fall prevention rod 8 to the latch 9.
Concrete 6 is placed in a space surrounded by the dedicated frame 2, the pattern forming mold 3, the longitudinal outer mold frame 4, and the short side outer mold frame 5, and appropriate curing is performed.
After the concrete is hardened, the fall-off stopper 8 is removed from the latch 9 so that the outer mold frame 4 in the longitudinal direction and the outer mold frame 5 in the short side direction spread outward and the concrete 6 can be easily removed. On the surface of the removed concrete 6, a concave / convex decorative pattern 7 to which the concave / convex pattern of the pattern forming mold 3 is transferred is formed.

  Civil engineering materials aiming at harmony with the surrounding natural environment, because a variety of wood grain patterns derived from natural wood can be expressed and concrete designs can be added at low cost and with high quality. Can be widely used as.

  Thinning materials can also be used for the pattern forming mold, which leads to promotion of the use of thinning materials.

  It is possible to change the pattern of a concrete panel with an uneven decorative pattern by changing the pattern forming mold, and it is possible to provide a product with a pattern according to the customer's request with high quality and low cost.

1 Pedestal 2 Dedicated frame 3 Pattern forming mold (cedar board)
4 Longitudinal outer mold 4a Longitudinal outer mold concave 4b Longitudinal outer mold convex 5 Short side outer mold 6 Concrete 7 Uneven decorative pattern (cedar board pattern)
8 Falling stop 杆 9 Locking

Claims (4)

  A method of manufacturing a concrete panel with an uneven decorative pattern, wherein a dedicated frame is installed on a pedestal, a pattern forming mold is laid inside the dedicated frame, and an outer mold frame is placed over the dedicated frame. A method for producing a concrete panel, comprising arranging and placing concrete in a space formed by the forming mold and the outer mold.   2. The method for producing a concrete panel according to claim 1, wherein natural lumber having an uneven surface shape is used for the pattern forming mold.   The method for producing a concrete panel according to claim 1 or 2, wherein the surface of the natural wood plate is fired with a flame or the like and carbonized to enhance the unevenness of the grain.   A manufacturing apparatus for use in a method for manufacturing a concrete panel with an uneven decorative pattern, which holds a base for supporting the apparatus, a pattern forming mold member, a dedicated frame for fixing the mold member, and concrete to be placed. An apparatus for manufacturing a concrete panel, comprising: an outer mold frame; a fall prevention hook provided on the outer mold frame;

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