JPH0536138B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to the manufacture of pseudo-wood used for component parts of sidewalk fences installed along sidewalks or fences installed in parks, displays, etc. It is about the method.

[Conventional technology]

Conventionally, sidewalk fences installed along sidewalks are generally constructed using supports, horizontal pipes, or rail materials made of steel pipes or steel plates whose surfaces are painted white or the like. Such sidewalk fences do not match the surrounding environment, especially when installed in mountainous areas, and are not desirable in terms of environmental conservation.

In addition, for fences installed in parks etc., for example, Japanese Utility Model Publication No. 58-47158 (prior art) and the same
A fake wooden fence shown in Publication No. 60-9341 (prior art) is known. The pseudo-wood used in these pseudo-wood shelves all have a core material of steel plate or steel pipe, and a coating layer made of plastic or the like is provided on the surface.
The surface of the coating layer has a textured pattern similar to wood grain.

Also, Utility Model Application Publication No. 58-67018 (prior art 3)
As shown in Figure 2, fake wood is also known, which is made by processing a pattern that resembles wood on the surface of weather-resistant steel.

[Problem to be solved by the invention]

In the pseudo wood disclosed in the above-mentioned prior art, since the surface of the core material remains straight and the coating layer is formed on the surface, the coating layer easily peels off. Also,
In order to form a wood grain-like uneven pattern on the surface of the coating layer, it is necessary to form the coating layer quite thickly.
In order to form such a thick coating layer and uneven pattern, a mold is required, and the molding equipment becomes large and equipment costs are extremely high, and the length of the simulated wood is inevitably limited. Put it away. Further, due to the difference in coefficient of thermal expansion between the core material and the coating layer, the coating layer tends to crack, resulting in poor durability.

Conventional artificial wood uses weather-resistant steel, and the color change due to oxidation of the material itself produces a wood skin color, but it is difficult to produce the natural color of wood skin using only such oxidation color. , have low commercial value. Further, there are problems such as the color tone changes as oxidation progresses and the strength of the material itself gradually decreases.

The present invention has been made to solve these problems, and can easily mold a desired length with a simple device, reduce equipment costs, and improve mass productivity. To provide a method that can reduce costs and produce simulated wood with excellent durability and high commercial value.

[Means to solve the problem]

In the present invention, both rollers capable of holding a metal tube as a raw material are formed into a drum shape with an arcuate surface corresponding to the metal tube, and the surfaces of the rollers on both sides are provided with a pattern for forming a wood grain-like uneven pattern. A large number of protrusions are discontinuously protruded, and the metal tube is passed between the rollers on both sides while rotating, and the protrusions form a wood grain-like uneven pattern on the surface of the metal tube. It is characterized by its surface being colored to the color of wood.

[Effect]

By the method described above, it is possible to easily produce pseudo-wood that exhibits a wood grain-like uneven pattern and a natural wood skin color using a simple device.

〔Example〕

Figures 1 and 2 show the manufacturing process of fake wood, and in the figure, two rollers 1,
2 are arranged, and one roller 3 is arranged above between both rollers 1 and 2. Each roller 1 to 3 is
Each surface is formed into a drum shape with an arc shape corresponding to the metal tube 4 as a material, and a large number of protrusions 11 for forming a wood skin-like uneven pattern on the surface.
21 and 31 are discontinuously protruded. Note that the lower rollers 1 and 2 are connected to the shaft 1 with respect to a stand (not shown).
2 and 22 to rotate at a fixed position, and the upper roller 3 is provided to be rotatable and vertically changeable relative to the mount via a shaft 32 and a movable bearing (not shown). It is being Further, a plurality of idle rollers are provided at predetermined intervals in the feeding direction of the tube 4 as required. This device generally uses an existing steel pipe rolling or shaping device, and the above-mentioned projections 11, 21,
31 is installed protrudingly. In this way, existing equipment only needs to be slightly improved, and equipment costs can be reduced.

A metal tube 4 such as a steel tube or an aluminum tube is supplied between the upper roller 3 and the lower rollers 1 and 2 to the above device, and the tube 4 is pulled out using, for example, a well-known pulling device (not shown). As a result, a large number of wood grain-like uneven patterns 41 are formed on the surface of the tube 4 by the protrusions 11, 21, 31 of the rollers 1, 2, 3.

According to this method, the tube 4 is connected to each roller 1,
A wood texture pattern 41 can be easily formed on the surface of the tube by simply passing the tube between the tubes 2 and 3, and even a long tube 4 can be continuously formed. Note that the rollers 1, 2,
Any one or all of the three may be rotationally driven.

Next, by painting the surface of the tube 4 having the above-mentioned wood texture uneven pattern 41 with wood texture (mainly brown color), the desired pseudo-wood 5 is obtained (see FIG. 3). 42 is a coating film. During this painting,
Since a large number of wood grain-like uneven patterns 41 are discontinuously formed directly on the surface of the tube 4, the paint has good adhesion, the paint film 42 is difficult to peel off, and durability is improved. Therefore, it is sufficient to apply a coating using a known coating method using a known coating method, but in particular, after pretreatment, adding an extender such as cement or gypsum and a hardening agent to the acrylic or epoxy paint in the form of a powder. If a method of topcoating with a synthetic paint made by mixing with As a result of the synergistic effect of the overall wood texture pattern 41 and the fine surface pattern, it is possible to obtain a simulated wood that is closer to natural wood, thereby greatly increasing the commercial value.

It goes without saying that the above-mentioned coating may be applied in three or more layers, such as an undercoat, an intermediate coat, and a topcoat.

The pseudo wood 5 manufactured as described above is, for example, a pseudo wood support material 5a and a pseudo wood support material 5 of a pseudo wood fence shown in FIG.
b. In this case, the pseudo-wood support 5a and the pseudo-wood beam 5b may be connected by welding, and the connection structure is not particularly limited, but the following configuration facilitates assembly and disassembly.

That is, in FIGS. 4 to 7, the pseudo-wood posts 5a are constructed of the above-mentioned pseudo-wood 5, and are erected at predetermined intervals on the ground or the like. Each pseudo-wood support 5
A lid body 51 is fixed to the upper end of a by welding or the like,
An annual ring-like pattern 52 is formed on the surface of the lid 51. A bolt insertion hole 53 that penetrates in the radial direction is located at the vertically intermediate portion of each pseudo-wooden support 5a at the position where the bamboo wood is attached.
is provided, and using this hole 53, a pseudo-wooden support 5 is installed.
The bracket 6 is attached to the bolt 61 on one or both sides of a.
and are detachably protruded through a nut 62. The bracket 6 may be fixed to the surface of the pseudo-wood support 5a by welding. A bolt insertion hole 63 is provided at the tip of the bracket 6 and extends vertically.

On the other hand, the pseudo-wood timber 5b is constructed of the above-mentioned pseudo-wood 5 in the same manner as the pseudo-wood support 5a. However, this pseudo-wood timber 5b is formed to a length corresponding to the interval between the pseudo-wood posts 5a, and both ends thereof are cut into an arc shape corresponding to the circumferential surface of the pseudo-wood posts 5a. Bolt insertion hole 6 of bracket 6
A bolt insertion hole 54 corresponding to 3 is provided, and a notch 5 corresponding to the bracket 6 is provided at the lower part of the peripheral wall.
5 is provided.

Then, the bracket 6 is inserted and hidden within both ends of the artificial wood 5b through the notch 55, and
The arc-shaped ends at both ends of the pseudo-wooden timber 5b are the pseudo-wooden supports 5a.
While in contact with the circumferential surface, both ends of the artificial wooden beams 5b are connected to the bracket 6 by bolts 64 and nuts 65, thereby constructing the artificial wooden beams 5b between the respective artificial wooden supports 5a. A fake wooden fence will be erected.

〔Effect of the invention〕

As described above, the method of the present invention uses a drum-shaped roller with a plurality of protrusions to form a large number of wood grain-like uneven patterns directly on the surface of a metal tube, and then colors this surface in a wood skin color. The above-mentioned wood texture uneven pattern,
Due to the synergistic effect with coloring, it is extremely close to natural wood.
It is possible to obtain pseudowood with high commercial value. Furthermore, according to this method, a wood texture pattern can be easily formed using existing pipe rolling or forming equipment, etc.
Equipment costs can be reduced. Moreover, even long pieces can be easily and continuously molded, improving mass production and significantly reducing costs. In addition, since a large number of wood grain-like uneven patterns are directly formed on the surface of the metal pipe, the paint adheres better when painting that surface, and the coating layer can be thinner than when a conventional plastic coating layer is provided. It is possible to obtain a highly durable simulated wood without the paint peeling off or cracking.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing an example of the manufacturing process of pseudo-wood according to the method of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a perspective view of the pseudo-wood, and Fig. 4 is a pseudo-wood using the above-mentioned pseudo-wood. A perspective view showing an example of a wooden fence, Fig. 5 is an exploded longitudinal cross-sectional view of the connecting part between the artificial wooden support and the artificial wooden fence, Fig. 6 is a longitudinal cross-sectional view showing the connected state, and Fig. 7 is a cross-sectional view of the same. It is. 4... Metal tube, 41... Wood texture uneven pattern, 42
... Paint film, 5 ... Fake wood, 5a ... Fake wood support, 5
b...Fake wood.

Claims (1)

[Claims] 1 Rollers on both sides capable of holding a metal tube as a material are formed into a drum shape with an arcuate surface corresponding to the metal tube, and a large number of protrusions for forming a wood grain-like uneven pattern are formed on the surfaces of the rollers on both sides. are provided discontinuously protrudingly, and the metal tube is passed between the rollers on both sides while rotating the rollers on both sides, and after forming a wood grain-like uneven pattern on the surface of the metal tube by the protrusions, the surface of the metal tube is A method for producing pseudo-wood characterized by coloring it to a wood skin color.