JPS5937206B2 - How to make fake wood - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a fake tree in which a coating layer is formed on the surface of a core material, and particularly to a method for manufacturing the fake tree suitable for use as a fence post.

As is well known, a plurality of crossbars are connected to a fence post.

Therefore, when using the fake tree as a fence post, it is necessary to attach a connecting metal fitting for connecting the crossbars to the core material, and at the same time, it is necessary to cut out the surrounding coating layer by a diameter large enough to insert the crossbars.

However, such cutting out of the coating layer is generally carried out by a worker on site using a knife or the like, but this can result in accidentally cutting out a diameter larger than necessary or damaging the surrounding surface of the coating layer. This impairs the commercial value of the artificial wood, and the cut-out covering layer is discarded, resulting in a waste of material.

In view of this point, the present invention attempts to completely solve the above-mentioned drawbacks by making it possible to form the above-mentioned cutouts during the manufacturing process of the fake tree.

That is, the method for producing a fake tree according to the present invention includes attaching a drilling cap in advance to an appropriate position on the surface of the core material in a removable manner, and in that state forming a coating layer on the surface of the core material except for the portion where the cap is attached. The summary is what we have done.

An embodiment of the method of the present invention will be described below based on the drawings.

FIG. 4 shows a state in which a hole-drilling hole is attached to a suitable position on the surface of a core material 2, in which a round steel pipe is used as the core material 2.

However, there are other materials such as pipes, rods, boards or plasterboards made from metals such as aluminum and stainless steel, synthetic resins such as polyvinyl chloride and polyethylene, wood, etc., wood wool cement boards, asbestos boards, wire mesh, etc. It is also possible to use materials with good workability.

The perforated cap has a diameter approximately equal to the cross-sectional diameter of the horizontal beam to be connected to the artificial tree as a support, and a thickness approximately equal to the thickness of the coating layer formed on the core material 2. It is better to use something.

Each cap 1 must be attached to the core material 2 so that it can be removed after the coating layer is formed, and it is preferable that the cap 1 be screwed in with a bolt ζ.

Also, choose the mounting position of the cap at the position where you want to connect the crossbars.

After completing the capping on the surface of the core material 2 as described above, the core material 2 is set in the mold 3 for molding fake wood as shown in FIG. 2A.

The mold 3 is made from a log of good shape and is made of urethane rubber.

As shown in FIG. 2B, a plurality of sets of two molds 3 are stored in the casing 4.

When the core material 2 is set in each mold 3, the door 4a of the casing 4 is closed and placed on a mounting table 6 with a pie break 5, as shown in FIG.

Then, after fixing each core material 2 with the fixing arm...
The formulation 8 is fed into the mold 3 through a mono pump 9 and a hose 10.

In this case, the vibration caused by the pie break 5 causes the formulation 8 to
is uniformly filled into the space within the mold 3 without any gaps.

Formulation 8 serves as a covering layer for the pseudowood and is composed of natural or artificial lightweight aggregate and a binder.

Natural or artificial lightweight aggregates include river sand, fine crushed stone,
Ceramic pieces, perlite, shirasu balloons, etc. are used.

As the binding material, gypsum, cement, or synthetic resin such as unsaturated polyester is used.

When using plaster or cement, use a synthetic resin emulsion such as vinyl acetate or EvA.

It is also possible to impregnate or add unsaturated polyester or the like.

The mixing ratio of these natural or artificial lightweight aggregates and binder is 30 to 100 parts by weight of gypsum and cement, 15 to 70 parts by weight of water, and 100 parts by weight of natural or artificial lightweight aggregate, depending on the strength and molding conditions. Or, 30 to 30 parts by weight of synthetic resin per 100 parts by weight of natural or artificial lightweight aggregate.
The amount is preferably 200 parts by weight.

Note that reinforcing materials such as asbestos, glass fibers, synthetic fibers, etc. can also be added to the compound 8 as required.

When the molding is completed in this way, the mold is removed as shown in FIG. 4A, and the fake wood A... is removed.

Then, as shown in Figure B, remove the cap for drilling using the artificial wood A.

In this way, a fake tree for use as a fence post is obtained. Normally, prior to the demolding, a mold hole 11 is inserted into the upper end surface of the fake tree to form a mold hole 12 for the tree rings, as shown in the order of FIGS.
The annual ring compound 13 is filled into the mold cavity 12, and the annual ring mold 14 is pushed in from above to form the annual rings.

According to the artificial tree A manufactured as described above, capt.
- Screw a connecting metal fitting (not shown) into the screw hole into which the bolt was screwed, and attach a crosspiece (usually fake wood is used) to the connecting metal fitting.

By connecting with one end extrapolated, a fence as shown in FIG. 6 can be constructed.

In the figure, B... is the crosspiece. The surface of the coating layer 15 of the fake wood A is coated with a resin paint having good water resistance and weather resistance before or after demolding, and is colored in a color very similar to that of the raw wood.

As such paints, acrylic paints, urethane paints, acrylic urethane paints, polyester paints, epoxy paints, vinyl chloride-vinyl acetate paints, etc. are used.

As explained above, the method for producing a fake tree according to the present invention involves attaching a drilling cap in advance to an appropriate position on the surface of the core material in a removable manner, and then applying a coating layer to the surface of the core material except for the part where the cap is attached. Since it is designed to form a , it has the following effects.

■ After molding the fake wood, cutouts for connecting crosspieces can be formed by simply removing the hole-drilling cap, so crosspieces can be connected immediately on site without cutting out with a knife, making it easy to use for fences, etc. The workability of assembly is very good.

■ By selecting the appropriate size of the hole-drilling cap in relation to the crosspiece, it is possible to always form holes of the appropriate size in the coating layer, and there is no need to use a knife at the site. Therefore, it is possible to obtain a fake tree with high commercial value.

(2) Since the hole-drilling cap is attached in advance to the part where the crosspieces are connected, a coating layer is not originally formed on that part, so material can be saved.

■ If the hole-drilling cap is screwed into the core material as in the example, the screw hole into which the cap was screwed can be used as it is as a hole for attaching the connecting fitting, which reduces the number of machining steps. less.

It goes without saying that the artificial tree produced by the method of the present invention can be used for purposes other than fence posts.

[Brief explanation of the drawing]

The figures show an embodiment of the method of the present invention, in which Fig. 1 shows a state in which a hole-drilling cap is attached to a core material, and Fig. 2A shows a state in which a core material is set in a mold for molding. Figure B is an overall configuration diagram of the mold, Figure 3 is a diagram showing the molding process, Figure 4A is a diagram showing the demolding process, Figure B is a diagram showing the state with the cap removed, and Figure 5 is a diagram showing the fake wood. FIG. 6 is a diagram showing the process of forming annual rings on a tree, and FIG. 6 is a diagram showing a fence assembled using the artificial tree manufactured by the method of the present invention. 1... Cap for drilling, 2... Core material, 15... Covering layer.

Claims (1)

[Claims] 1. A fake tree characterized in that a hole-drilling cap is removably attached to a suitable position on the surface of the core material in advance, and in this state a coating layer is formed on the surface of the core material except for the part where the cap is attached. Production method.