JP2501425B2 - Method for manufacturing bent decorative board - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board that is used by being bonded to the surface of a base material, and more particularly to a method for producing a bent decorative board that is bent in a planar direction.

[0002]

2. Description of the Related Art In recent years, there have been found interiors of buildings, for example, in which curved wooden parts are provided on the rising stiles of the entrances, the railings of stairs, etc., so as to make the design look high-quality. Such a curved rising frame, handrail, and the like are formed on the surface (upper surface) of the bending base material 6 bent into a predetermined shape as shown in FIG. 4, for example. For example, the bent decorative plate 50 formed in the same shape is adhered and fixed with an adhesive. The bending base material 6 is
It is impossible to bend the square columnar raw material as it is (it will break), but as shown in FIG. 4, it may be a polymerized columnar body formed by adhering and polymerizing a large number of plate materials 6a, 6a. Bending is possible. That is, in the case of a polymerized columnar body obtained by polymerizing a large number of plate materials 6a, 6a ..., Since each of the divided plates 6a has elasticity, the bending pressure due to mechanical force (bending pressure in the plate material stacking direction) It is durable and can be bent relatively easily.

Further, in recent years, a veneer which is printed with a wood pattern on the surface of the plate to resemble a natural material is often used. However, a veneer using such a printed veneer feels cheap. However, it is preferable to use a decorative plate made of a natural plate material in order to give a high-grade feeling.

By the way, as a method of forming the curved decorative plate 50 shown in FIG. 4 from a natural plate material, as shown in FIGS. 5A and 5B, the width is slightly larger than the maximum width W ₁ of the curved decorative plate 50 to be formed. It is conceivable to form the bent plate 50 having a desired shape bent in the plane direction by sawing from the plate member 51 having a wide width W ₂ . In the case of FIG. 5 (A), the bent decorative plate 50 is formed on the plate member 51 whose flat surface is the grain surface 11, and
In the case of (B), the plate member 51 having the grain surface 12 is formed to form the bent decorative plate 50.

[0005]

However, FIG. 5 (A)
In the conventional method for forming the bent decorative plate 50 shown in (B), a plate material 51 having a considerably wide width W ₂ (expensive) is required to form the bent decorative plate 50, and the cut portion 52,
There is a problem that the material of 52 ... Is wasted. Further, when the bent decorative plate 50 is formed on the perforated surface 11 of the plate member 51 as shown in FIG. 5A, and when the plate member 5 is formed as shown in FIG. 5B.
When the bending decorative plate 50 is formed on the grain surface 12 of No. 1, the wood grain 13 remaining on the bending cosmetic plate 50 is unnatural due to the presence of the bending portion 50a (the wood grain is in the bending direction of the bending plate). However, there was a problem that the product value became low and the product value decreased.

In view of the above-mentioned conventional problems, the invention of the present application does not waste material, and the wood grain appearing on the plane of the formed bent decorative plate is neatly arranged along the bending direction of the bent plate. It is an object of the present invention to propose a method for manufacturing such a bent decorative board.

[0007]

The method for manufacturing a bent decorative plate of the present application is for manufacturing a bent decorative plate bent in a plane direction, and the following steps are performed. That is, the method for manufacturing a bent decorative board of the present application is a raw material dividing step of dividing a wooden rectangular prismatic raw material into predetermined small thicknesses with a slicer, and each divided plate obtained in the raw material dividing step with an adhesive. And a dividing plate polymerization step of adhering to each other to superimpose and adhere to the original rectangular column shape,
A columnar body bending step of bending the polymerized columnar body obtained in the dividing plate polymerization step into a predetermined shape in the polymerization direction of each divided plate, and a bent columnar body obtained in the columnar body bending step with a predetermined small thickness. The bent columnar body dividing step of dividing into bent plates is sequentially performed.

In the raw material dividing step, the raw material used is a bent plate finally formed (bent in the plane direction).
The length is equal to or more than, and the width of one side is almost equal to the end width of the bent plate. Further, in this raw material dividing step, when a grain pattern is to be revealed on the flat surface of the bending plate to be manufactured, the raw material is divided parallel to the grain surface, while the flat surface of the bending plate is divided. When the grain pattern is to appear on the sheet, the raw material should be divided parallel to the grain surface. Further, in the raw material dividing step, the raw material is sequentially cut into a predetermined small thickness (for example, a thickness of 2 to 5 mm) by a blade of a slicer. In this raw material dividing step, chips are not generated from the raw material. still,
As described above, the raw material is divided into pieces each having a predetermined small thickness in order to enable bending in a subsequent process.

In the dividing plate polymerization step, the dividing plates divided in the raw material dividing step are sequentially adhered with an adhesive to polymerize and adhere to the original rectangular column shape. The adhesive used in this step is preferably one that can firmly bond both split plates with a small amount. Further, it is preferable that no gap is formed between the two divided plates by the adhesive in the joined state. Further, in this dividing plate superimposing step, the short grained wood grains appearing on the side surface in the width direction of each dividing plate are successively polymerized and bonded so as to be continuous with each other.

In the columnar body bending step, the polymerized columnar body formed by fixing each divided plate with an adhesive is bent into an appropriate shape by using a bending machine. Since it is configured by polymerizing the divided plates divided by thickness, the polymerized columnar body can be bent by applying a bending pressure in the thickness direction of the divided plate to the polymerized columnar body.

In the bending columnar dividing step, the bending columnar body is displaced by a predetermined small thickness (for example, 2 to 2) from a direction displaced by 90 ° with respect to the dividing direction of the dividing plate performed in the raw material dividing step.
The bent plate is formed by dividing the bent plate into pieces each having a thickness of 5 mm. Also in this case, if the bent columnar body is divided by a slicer, chips will not be generated at the time of division. In the bending columnar body dividing step, the bending columnar body is preferably cut with a slicer, but it may be cut by sawing in some cases. The bent plate thus formed is used as a bent decorative plate by finishing the surface by polishing or polishing.

[0012]

In the present invention, since the raw material is divided by the slicer in the raw material dividing step, there is no portion removed as chips during the division. Therefore, when the divided plates are polymerized in the divided plate superimposing step, the short grain on both side surfaces in the width direction are sequentially continuous with each other.

In the columnar body bending step, since the polymerized columnar body obtained by polymerizing each divided plate is bent,
The elasticity of each of the divided plates allows each to be bent, and even a polymerized columnar body can be easily bent. Further, in the columnar body bending step, since the divided plates are adhered to each other by the adhesive in the divided plate polymerization step, the divided plates can be bent while being fixed to each other. Does not peel off. Further, in the bent columnar body thus bent, the wood grains on both side surfaces in the width direction of the dividing plate are correctly oriented along the bending direction of the bent columnar body.

In the bending columnar dividing step, cutting is performed from a direction displaced by 90 ° with respect to the dividing direction performed in the raw material dividing step. Therefore, each bending plate formed has a narrow width (dividing plate). (Thickness of) is a structure in which rod-shaped materials are sequentially joined in a planar shape. The bending plate formed in this way is
A large number of linear joints (joint surfaces of the divided plates) are present on the plane side, but the linear joints are almost invisible to the naked eye. Further, the wood grain appearing on the plane side of each bending plate is oriented along the bending direction of each split plate. The bent plates formed of a single bent columnar body have the same shape.

[0015]

EFFECTS OF THE INVENTION According to the method for manufacturing a bent decorative plate of the present invention, by performing the above-mentioned steps, it is possible to manufacture a bent decorative plate bent in the plane direction without waste of material. In addition, in the bent decorative board manufactured by the manufacturing method of the present application, the wood grain appearing on the flat side is lined up neatly along the bending direction of the bent board, and there is an effect that a high-grade feeling can be produced.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present application will be described with reference to FIGS. 1 to 3. FIGS. 1 (A) to 1 (E) show manufacturing process diagrams according to the embodiment of the present application, and FIG. FIG. 3 shows a method of using a bent decorative plate manufactured through the steps, and FIG. 3 shows a comparative example (forming a divided plate by sawing) when performing the raw material dividing step and the dividing plate polymerization step of the present application. There is. Further, the manufacturing method shown in FIG. 1 is performed so that the grain 12 appears on the flat side of the bent plate 5 to be formed.

In the method for manufacturing a bent decorative plate of the present embodiment, the bent decorative plate 5 is manufactured by performing the following steps. That is, FIG.
As shown in FIG. 1 (A), a raw material 1 made of wood and having a rectangular columnar shape is divided by a slicer 10 into a predetermined small thickness to form a dividing plate 2. A raw material dividing step, and as shown in FIG. Plates 2, 2 ...
1D are shown in FIG. 1D by dividing the polymerized columnar body 3 into a predetermined shape by sequentially adhering them to each other with an adhesive 9 to form the polymerized columnar body 3 shown in FIG. 1C. The columnar body bending step of forming the bent columnar body 4 and the bent columnar body 4 are shown in FIG.
As shown in (E), the bending columnar body dividing step of dividing the bending plate 5 into a predetermined small thickness is sequentially performed to manufacture the bending decorative plate 5 as shown in FIG.

In the raw material dividing step shown in FIG. 1 (A), the raw material 1 to be used may be of any suitable type as long as it has wood grain 13. Further, the raw material 1 is
A length equal to or greater than the bending plate 5 finally formed (for example, 50
It has a length from about cm to about 3 to 4 m) and a width on the grain surface 12 side is almost equal to the end width of the bent plate 5 (for example, a width of about 50 to 150 mm). It In the raw material 1 shown in FIG. 1 (A), a material in which the center P of the grain pattern passes through the center portion of the grain surface 12 in the width direction is adopted.

In the step of dividing the raw material shown in FIG. 1 (A), the raw material 1 is sliced by a slicer 10 into pieces each having a predetermined small thickness (for example, about 2 to 5 mm) and divided into a large number of divided plates 2. . In this case, the slicer 10 is shown in FIG.
As shown in (A), having a pusher 15 and a blade 16,
By pushing and moving the raw material 1 with the pusher 15, the lower surface side of the raw material 1 is cut off by a blade 16 by a predetermined small thickness. In this embodiment, since the grain pattern is made to appear on the flat side of the bending plate 5 to be manufactured,
In the raw material dividing step, the raw material 1 is cut off in parallel with the grain surface 11. However, when the grain pattern is to be exposed on the flat side of the bending plate 5 to be manufactured, the raw material 1 is Cut it in parallel with 12. Further, in this raw material dividing step, since the dividing plate 2 is cut off by the blade 16 of the slicer 10, no chips are generated during the division, and for example, in the case of sawing shown in FIG. The cut portion X does not occur unlike the above. That is, in FIG. 3, the saw blade 17
Although the case where the dividing plate 2 is divided from the raw material 1 is shown by this, in this case, as shown in FIG. 3 (A), chips are generated only in the thickness (2 to 3 mm) portion of the saw blade 17. The cut portion X is generated by the cutting width.

Next, in the dividing plate superposing step, the dividing plates 2, 2 ... Divided in the raw material dividing step of FIG.
As shown in FIG. 1B, they are sequentially adhered by an adhesive agent 9 to be combined with the original square pillar-shaped polymerized columnar body 3 as shown in FIG. 1C.
The adhesive 9 used in this step is preferably one that can firmly bond the two split plates 2 and 2 with a small amount. For example, as the adhesive 9, a material having a property of reacting with water in the wood and solidifying (for example, a product name manufactured by Oshika Shinko Co., Ltd .; referred to as oushicadine) is suitable. Further, it is preferable that no gap is formed by the adhesive 9 between the split plates 2 and 2 in the joined state. Furthermore, each dividing plate 2, 2
At the time of superposition of, the short grain patterns 13a, 13a appearing on the lateral side surfaces of each of the division plates 2, 2 ... Are made to be continuous with each other. Then, by superposing and adhering all the divided plates 2, 2, ... Divided from the raw material 1, the superposed columnar body 3 shown in FIG. 1 (C) can be constructed. If the saw blade 17 is used to divide the dividing plate 2 from the raw material 1 as shown in FIG. Then, when the divided divided plates 2, 2 ... Are superposed, a step is formed between the short wood grain 13a, 13a of each divided plate 2, 2 as shown in FIG. Is discontinuous (looks bad).

In the columnar body bending step shown in FIG. 1 (D), the polymerized columnar body 3 shown in FIG. 1 (C) is bent into a proper shape by using a bending machine. Is composed by superimposing the dividing plates 2, 2 ... With small thickness, so that the polymerizing columnar body 3 is subjected to bending pressure in the thickness direction of the dividing plate 3 to form The bent columnar body 4 as shown in FIG. 1 (D) can be bent. That is, since each of the divided plates 2, 2, ... Is formed to have a predetermined small thickness (for example, about 2 to 5 mm), each divided plate has elasticity in the thickness direction, and the divided plates are formed on the entire superposed columnar body 3. When a bending pressure in the thickness direction is applied, each dividing plate 2 absorbs the bending pressure and troubles such as breakage do not occur.

In the bent portion 4a of the bent columnar body 4,
Dividing plate 2 located on the concave side and dividing plate 2 located on the convex side
And, the expansion and contraction rates of the dividing plates are different (the concave side dividing plate is compressed, and the convex side dividing plate is expanded), but there is almost a difference in expansion and contraction in the joint surface portion between the adjacent dividing plates 2 and 2. There is no. Therefore, the respective short shingles 13a, 13a exposed on the side surfaces in the width direction of both the split plates 2 and 2 become continuous with each other even in the bent portion, and the split plate 2 on the most concave side and the most convex side. Although the expansion and contraction rate of the material is considerably different from that of the dividing plate 2 of FIG.
Since the wood grain patterns of the entire bent columnar body 4 are slightly deformed due to the mutual continuity, the continuous state of the respective wood grain lines 13, 13 ... Is not broken. In addition, the center of the grain pattern remains oriented along the bending direction of the bent columnar body 4.

In the bending columnar body dividing step shown in FIG. 1 (E), the bending columnar body 4 shown in FIG. 1 (D) is replaced with the dividing plate dividing direction performed in the raw material dividing step shown in FIG. 1 (A). Is to divide the plate by a predetermined small thickness (for example, 3 mm) from a direction displaced by an angle of 90 °, and sequentially form the bent plate 5 having the same shape. Also in this case, if the bent columnar body 4 is divided by the slicer 10, chips at the time of division are not generated. Also, this bending plate 5
Is used as a curved decorative plate 5 as shown in FIG. 2, for example, by finishing the surface by polishing or polishing.

Bending decorative plate 5 manufactured in this way
Has a large number of linear joints when the divided plates 2, 2 ... Are joined to the flat surface side, but these linear joints become almost invisible to the naked eye, and they are also very similar. It has the appearance of being formed from a single piece of natural board material. Further, as shown in FIG. 2, the center P of the wood grain 13 appearing on the plane side of the bent decorative plate 5 is oriented along the bending direction of the bent plate.

The bent decorative plate 5 is used, for example, as shown in FIG. 2, by adhering it to the surface of the bent base material 6 with an adhesive or by attaching it by other appropriate means. The bending base material 6 is formed by bending a large number of plate materials into a predetermined shape by a bending machine.
Is molded into a shape that matches the bent shape of the bent base material 6.

According to the method for manufacturing a bent decorative plate of this embodiment, by performing the above-mentioned steps, it is possible to manufacture the bent decorative plate 5 which is bent in the plane direction without waste of material. The wood grain 13 appearing on the flat surface of the formed bent decorative plate 5 is lined up neatly along the bending direction of the bent plate, so that the bent decorative plate 5 having a high-grade feeling can be provided.

[Brief description of drawings]

FIG. 1 is a process drawing of a method for manufacturing a bent decorative board according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a method of using the bent decorative board manufactured by the manufacturing method of FIG.

FIG. 3 is an explanatory diagram showing a difference when a saw is cut from the manufacturing method of the present application.

FIG. 4 is a perspective view showing a method of using a conventional bending decorative plate.

FIG. 5 is an explanatory diagram for forming a curved decorative plate by a conventional method.

[Explanation of symbols]

1 is a raw material, 2 is a dividing plate, 3 is a polymerized columnar body, 4 is a bent columnar body, 5 is a bent plate (bending decorative plate), 6 is a bending base material, 9 is an adhesive, 10 is a slicer, and 13 is wood grain. is there.

Claims (1)

(57) [Claims] 1. A rectangular raw material (1) made of wood and divided into predetermined small thicknesses by a slicer (10), and the divided plates (2, 2 ...) Are mutually bonded by an adhesive (9). Then, they are polymerized and fixed in the original rectangular column shape, and the polymerized columnar body (3) is bent into a predetermined shape in the polymerization direction of each of the dividing plates (2, 2 ...), The bent columnar body (4) Is divided by a predetermined small thickness from a direction displaced by 90 ° with respect to the dividing direction of the dividing plate (2) to form a bending plate (5) bent in the plane direction. And a method for manufacturing a bent decorative board.