JPS5850975Y2 - Chamfered wood - Google Patents

Description

[Detailed description of the invention] This invention is made by bonding a decorative veneer of precious wood to two or more continuous and adjacent effective surfaces of a base material made of low-grade lumber, plywood, particle board, etc. with appropriate dimensions. The present invention relates to chamfered precious wood which is made of decorative material, whose corners are cut diagonally, precious wood is buried in the diagonal notched portions, and a chamfered surface is formed at the precious wood portions.

This idea uses decorative veneer laminated plywood made of precious wood, which is stable in quality, as the surface decorative board for the beveled precious wood used for building frames, openings, pillars, etc., to achieve stable quality. This was done to obtain uniformly chamfered precious wood at low cost and industrially using inexpensive equipment that does not use heat-pressure equipment or the like.

Currently, many types of wood are used for the interior of homes in Japan, and the materials used for interior decoration include precious woods such as cedar, zelkova, cypress, rosewood, ebony, Japanese cypress, and birch, which are both domestically produced and imported. are in short supply and very expensive,
Due to this current situation, interior materials with decorative veneer of precious wood laminated to the surface are being used very often, such as laminated laminated wood of precious wood for construction purposes, ceiling panels, rising frames, and openings.

However, in the prior art, as shown in Figure 1 of the drawings, when manufacturing a thin undried or dried precious wood veneer 1 of 0.2 to 9.5 m/m on the surface of a base material A, manual work is required using an iron. Generally, they were pasted together by hand, which resulted in unstable adhesive strength and poor efficiency.

Note that X in the figure represents a corner. In addition, when producing conventional beveled precious wood, as shown in Figure 2, the beveled surface has a thickness of 3 m.
/ meter thick veneer 2 of precious wood, 0.3~lrn on the other side.
/In using thin unseasoned or dried precious wood veneer 1,
Using a mixture of urea-formalin resin and vinyl acetate resin emulsion on the base material A, heat-press bonding using a hot press and chamfering the corner X. As shown in Figure 3 of the drawing, the precious wood 3' is placed on the chamfer A common method is to bond a flat plate 3 like this to a base material A, then hot-press a thin undried or dried precious wood veneer 1 of 0.2 to 0.5 m/m and chamfer the corners X. Therefore, it has been common practice to bond so-called undried or dried veneers with heat and pressure using an iron or hot press.

Therefore, undried precious wood veneers are susceptible to discoloration, drying cracks, and end drying cracks, have a short shelf life, and are difficult and troublesome to handle during the process.

Furthermore, during hot-pressure bonding, there were many adhesive failures due to seepage of the adhesive onto the surface, water, and moisture, and a high product defect rate was unavoidable.

Furthermore, heat-pressure bonding requires a certain degree of high pressure of 8 to 10 kg/CTn2 to obtain good adhesive strength, and the base material must have the strength to withstand high pressure, making it difficult to hollow out the structure of the base material. .

This idea was made to improve the above-mentioned conventional problems, and instead of using undried precious wood veneers, we focused on cold-pressure bonding the decorative wood veneer laminated plywood, which has a stable bonding technology. The purpose of the present invention is to provide quality beveled wood as described below.

The chamfered precious wood of this invention will be explained with reference to drawing examples.

First, as shown in FIG.
Glue the precious wood decorative veneer laminated plywood B that has been laminated together,
Then, at the corner X of the base material A, a diagonal notch 7 is provided which is diagonally cut out from the decorative surfaces on both sides and has a cutting angle α corresponding to the chamfer size.

In the above case, in the embodiment, it is appropriate that the bevel angle θ between the decorative surfaces on both sides and the plane perpendicular to each side is approximately 3 to 5 degrees, that is, the notch angle α of the diagonal notch portion 7 is approximately 80 to 84 degrees. It's Toshide.

Therefore, a small square piece of precious wood C with a fitting angle β larger than the cutting angle α is fitted into the diagonal notch 7 without applying lateral pressure, and the glued small square piece of precious wood C is chamfered. As shown in FIG. 6, it has a chamfered surface 6.

Note that the fitting angle β of the small square material C mentioned above is 90°.

In addition, instead of the above-mentioned square timber C', a suitable small triangular timber C' with a chamfered surface 6 as shown in Fig. 8 is used.
It is also possible to form a structure by fitting and adhering it to the diagonal notch part 7 by using a material.

Furthermore, if the base material A is thin, as shown in Figure 9, glue decorative wood veneer laminated plywood B to one wide effective surface, and glue decorative decorative wood veneer 5 for wood edge attachment to the other thin effective surface. (In other words, by using both the decorative wood veneer laminated plywood B and the decorative decorative wood veneer 5 for pasting the end), insert small square pieces of precious wood C or small triangular pieces of wood into the diagonal notches 7 at the corners of the base material A. The chamfered surface 6 may be represented by C' being glued in place.

Furthermore, the chamfered surface 6 of precious wood small square lumber C or small triangular lumber C'
As shown in Figures 7 to 9, it can be used as a plane inclined surface or as a
It may be a convex curved surface as shown in the figure or a concave curved surface as shown in FIG. 11.

The chamfered wood of this invention has a slanted structure, does not require the use of expensive equipment such as boilers and hot presses, has a stable adhesive technology, is of excellent quality, and has a low inventory. It has excellent effects such as being able to easily use decorative wood veneer laminated plywood, which is commonly available on the market, as a surface decorative material.

Furthermore, sufficient adhesion strength can be obtained for bonding precious wood decorative veneer plywood B to base material A by cold-pressure bonding with an adhesive pressure of 5 to 6 kg/cm2, so the structure of the base material can be made hollow and lightweight. can be made possible.

In particular, in this invention, the diagonal notch 7 at the corner of the base material A is
is the cutting angle α, and the precious wood small square timber C or small triangular timber C′ with the engagement angle β larger than the cutting angle α is bit-fitted and bonded, so a strong joint can be obtained and the precious wood The joining line between the decorative veneer and the small square or small triangular wood is extremely well finished, and has the outstanding effect of producing beautiful beveled wood with no adhesive leakage.

[Brief explanation of the drawing]

Figures 1 to 3 are cross-sectional views of conventional chamfered precious wood, Figure 4 is a cross-sectional view of a decorative wood veneer laminated to a base material, and Figure 5 is a cross-sectional view of a case where a decorative wood veneer is bonded to a base material. Figure 5 is a cross-sectional view of a conventional beveled precious wood. Figure 6 is a sectional view of the state in which small square pieces of precious wood are glued together, Figure 7 is a sectional view of the main part of this devised chamfered piece of wood showing the chamfered surface, and Figure 8 is a cross-sectional view of the same small piece of precious wood. Cross-sectional view of main parts when using triangular materials,
9A is a sectional view of a main part in the case of the embodiment in which the base material is thin, and FIGS. 1...Precious wood veneer, 2...Precious wood thick veneer,
3... Flat plate, 3'... Precious wood, 4...
...Plywood, 5...Precious wood decorative veneer for pasting the end of the wood,
6... Chamfered surface, 7... Oblique notch,
A... Base material, B... Decorated wood veneer plywood, C... Small square lumber, C'... Small triangular lumber, a... ...Entry angle, β...Fitting angle, θ
・・・・・・Beveled angle.

Claims (1)

[Scope of utility model registration request] A decorative wood veneer laminated plywood board B is adhered to a plurality of adjacent effective surfaces of a base material A serving as a core material, either alone or in combination with a decorative decorative wood veneer 5 for pasting, and the corners of the base material A are bonded. A diagonal notch 7 is obliquely cut out from both decorative surfaces and has a notch angle α according to the chamfer size, and the diagonal notch 7 has a fitting angle β larger than the cut angle α. A chamfered precious wood made of a small square piece of precious wood C or a small triangular piece of wood C' that is fitted and glued together to display an appropriate chamfered surface 6 of the glued precious wood.