JP2003211418A - Method for bending in v-cut of plywood core material and bent plywood core material manufactured by using the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for bending in V-cut of a plywood core material capable of easily obtaining the plywood core material processed by bending without sticking a decorative sheet to the plywood, and to provide the bent plywood core material manufactured by the method. <P>SOLUTION: For the method for bending in V-cut of a plywood core material, a bending groove 5 for bending the plywood 1 from one surface 3 of the plywood 1 laminated by crossing the fiber directions at right angles toward the other surface 4 is formed. The deepest part of the bending groove 5 is shaped in a V-cut groove 51 and formed in a lowest layer veneer 21 so that the lowest layer veneer is not divided. Further, a longitudinal direction of the V-cut groove 51 is made almost parallel to a fiber direction of the lowest layer veneer 21. The V-cut groove 21 is bent to manufacture the bent plywood core material. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plywood core material for producing a bent plywood core material by bending plywood.
The present invention relates to a cut bending method and a bent plywood core material manufactured using the method.

[0002]

2. Description of the Related Art Conventionally, when manufacturing, for example, an L-shaped bent plywood core material, as a first method, as shown in FIG. They are brought into contact with each other, and they are bonded to each other in an L-shape by using an adhesive or a tacker, and a folded decorative plate C made of a fiber sheet such as a decorative sheet or MDF is bonded to the surface thereof. As a second method, as shown in FIGS. 8 and 9, the decorative sheet D is attached to the surface of the plywood A in advance, and the V-cut grooves E, E are formed on the back surface of the plywood A to separate the plywood A. Then, the plywood A is bent to close the V-cut groove portions E, E. At this time, since the V-cut groove portion of the decorative sheet D on the surface functions as a hinge, even if the V-cut grooves E, E are formed, the plywood A does not fall apart and the bending work is facilitated. .

[0003]

However, in the first method described above, one flat plywood A is brought into contact with the other partial plywood B in an orthogonal state, and L and L are attached to each other using an adhesive or a tacker.
Since they are joined in a letter shape, the joining work requires a lot of trouble and a lot of time. In the second method, the V-cut groove E is formed after the decorative sheet D is attached to the plywood A in advance, so that the decorative sheet D is soiled or damaged during the formation of the V-cut groove E. was there.
The present invention provides a V-cut bending method for a plywood core material and a bent plywood core material manufactured by using the method, by which a bent plywood can be easily obtained without attaching a decorative sheet to the plywood in advance. The task is to do.

[0004]

A V-cut bending method for a plywood core material according to claim 1 is one in which a plurality of veneers are laminated with their fiber directions orthogonal to each other from one surface to the other surface of the plywood. A bending groove for bending the plywood is formed, and the deepest part of the bending groove is used as a V-cut groove so that the lowermost-layer veneer is not divided into the lowermost-layer veneer of the plywood. And the fiber direction of the lowermost layer veneer are substantially parallel to each other, and the V-cut groove portion of the lowermost layer veneer is bent to produce a bent plywood core material.

A V-cut bending method for a plywood core material according to a second aspect is the same as the V-cut bending method for a plywood core material according to the first aspect, wherein the bending groove is the V-cut groove and the V-cut groove is closed. When the non-V cut grooves are closely fitted to each other, a part of the one surface of the plywood is fitted into the non-V cut grooves. To do.

A bent plywood core material according to a third aspect of the present invention forms a bending groove for bending the plywood from one surface of the plywood obtained by laminating a plurality of veneers with their fiber directions orthogonal to each other toward the other surface. In addition, the deepest part of the bending groove is used as a V-cut groove so that the bottom-layer veneer is not separated into the bottom-layer veneer of the plywood, and the longitudinal direction of the V-cut groove and the bottom-layer veneer are It is characterized in that it is manufactured by making the fiber direction substantially parallel and bending the V-cut groove portion of the lowermost single plate.

A bent plywood core material according to claim 4 is the bent plywood core material according to claim 3, wherein the bending groove is bent and an outer surface corner portion of the bent portion on the other surface of the plywood is tapered. It is characterized by having done.

The bent plywood core material according to claim 5 is
A bending groove for bending the plywood is formed from one surface of the plywood obtained by laminating a plurality of veneers with their fiber directions orthogonal to each other, and the deepest part of the bending groove is used as a V-cut groove. The lowermost layer veneer of the plywood is formed so that the lowermost layer veneer is not divided, and the longitudinal direction of the V-cut groove and the fiber direction of the lowermost layer veneer are substantially parallel to each other. The V-cut groove portion is bent to manufacture a bent plywood core material, and a folded decorative plate is attached to the other surface of the bent plywood core material.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway perspective view showing a state in which a V-cut groove is formed on a plywood according to the first embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view of a V-cut groove portion of the plywood according to the first embodiment. is there. In the figure, reference numeral 1 is a plywood, which is usually a three-layer or five-layer wooden veneer 2 laminated with its fiber direction orthogonal to each other. The plywood 1
A bent groove 5 is formed on one surface 3 toward the other surface 4. The entire bent groove 5 in this embodiment is a V-cut groove 51. As shown in FIG. 2, the deepest part of the V-cut groove 51 reaches the lowermost layer veneer 21 of the plywood 1. The bottom layer veneer 21 is not divided. Further, the longitudinal direction of the V-cut groove 51 and the fiber direction of the lowermost layer veneer 21 are substantially parallel to each other. Figure 3
The bending groove 5 of the plywood 1 is bent to form the entire plywood 1 into an L shape, and the outer surface corner portion 53 of the other surface 4 of the plywood 1 is formed.
Taper, and then the other surface 4 of the plywood 1
It is the partial expanded sectional view which stuck the folding decorative board 7 which consists of fiber boards, such as MDF, on the side. Reference numeral 6 denotes a plywood core material that is bent before the folded decorative plate 7 is attached. A veneer or a decorative sheet may be attached to the surface of the folded decorative plate 7. Before the outer surface corner portion 53 of the other surface 4 of the plywood 1 is tapered, the plywood 1 that has already been bent, that is, the plywood core material 6, has the bending groove 5, that is, the V-cut groove 51 in the embodiment. Since it is fixed with an adhesive or the like, the plywood core material 6 can maintain the L-shaped shape even if the taper processing is performed.

FIG. 4 is a partially enlarged sectional view showing a state in which V-cut grooves having different shapes are formed on the plywood of the second embodiment according to the present invention, and FIG. It is a partial expanded sectional view when a decorative sheet is stuck on the surface. In the present application, the folded decorative plate 7 is used to include the decorative sheet. Bending groove 5 of the second embodiment
Has a V-cut groove 51 at its deepest part.
A non-V cut groove 52 is formed above the cut groove 51. When the bending groove 5 is bent, as shown in FIG.
The cut groove 51 and the non-V cut groove 52 are in close contact with each other, and a part of the one surface 3 of the plywood 1 is fitted into the non-V cut groove 52. The non-V cut groove 52
Therefore, the area of the bent groove 5 that comes into close contact with the bent groove 5 is increased, and the fixing strength of the bent groove 5 of the plywood core material 6 is increased. Also in this embodiment, the outer surface corner portion 53 of the other surface 4 is tapered. When forming the bent groove 5 in the embodiment, a groove having a concave cross section is provided on one surface 3 of the plywood 1 so as to substantially coincide with the fiber direction of the lowermost layer veneer 21, and further on one side of the bottom surface thereof. The V cut groove 51 is provided.

FIG. 6 shows a third embodiment according to the present invention.
It is a partial expanded sectional view at the time of bending the plywood 1 in which two bending grooves 5 were formed 180 degrees, and sticking the folding decorative board 7 which is a decorative sheet on the surface.

[0012]

According to the V-cut bending method of a plywood core material described in claim 1, a plurality of veneers 2 are bonded to each other with their fiber directions orthogonal to each other from one surface 3 of the plywood 1 to the other surface 4. A bending groove 5 for bending the plywood 1 is formed, and the deepest part of the bending groove 5 is used as a V-cut groove 51 on the lowermost layer veneer 21 of the plywood 1 and the lowermost layer veneer 2.
1 is formed so as not to be divided, and the V-cut groove 51 is further formed.
Since the longitudinal direction and the fiber direction of the lowermost layer veneer 21 are made substantially parallel and the V cut groove 51 portion of the lowermost layer veneer 21 is bent to manufacture a bent plywood core material, In comparison with a method of forming a V-cut groove so that the lowermost veneer 21 is divided and then bending the plywood, the present invention is A decorative sheet or a folded decorative plate can be attached after the plywood 1 is bent, and a large number of folded plywood core materials can be mass-produced that can be commonly used for decorative sheets of various patterns and folded decorative plates. In addition, according to the present invention, since a decorative sheet or a folded decorative plate can be attached as necessary after manufacturing the bent plywood core material 6, there is an effect that the folded decorative plate 7 is not damaged or soiled.

A V-cut bending method for a plywood core material according to a second aspect is the same as the V-cut bending method for a plywood core material according to the first aspect.
And a non-V cut groove 52 that closely fits with each other when the V cut groove 51 is closed, and a part of the one surface 3 of the plywood 1 when the non V cut groove 52 closely fits. Is fitted in the non-V cut groove 52, so that the plywood core material 6 manufactured according to the present invention has a large strength at the bent portion.

Further, in the bent plywood core material according to a third aspect of the invention, the plywood 1 is formed by adhering a plurality of veneers 2 with their fiber directions orthogonal to each other from one surface 3 to the other surface 4 of the plywood 1. A bending groove 5 for bending is formed, and the deepest part of the bending groove 5 is formed as a V-cut groove 51 so that the lowermost layer veneer 21 of the plywood 1 is not divided. The longitudinal direction of the V-cut groove 51 and the fiber direction of the lowermost-layer veneer 21 are substantially parallel to each other, and the V-cut groove 51 of the lowermost-layer veneer 21 is bent to manufacture. The described bent plywood core material bends the bending groove 5 and also the outer surface corner portion 5 of the bent portion on the other surface 4 of the plywood 1.
Since 3 is tapered, when the plywood 1 is bent, the bent portion is not cracked,
Easily bent and the outer surface corners 53 of the bent portion
It is easy to form a taper on.

The bent plywood core material according to claim 5 is
Forming a bending groove 5 for bending the plywood 1 from one surface 3 to the other surface 4 of the plywood 1 in which a plurality of veneers 2 are laminated with their fiber directions orthogonal to each other, The deepest part is formed as a V-cut groove 51 on the lowermost-layer veneer 21 of the plywood 1 so that the lowermost-layer veneer 21 is not divided, and the longitudinal direction of the V-cut groove 51 and the fibers of the lowermost-layer veneer 21 The V cut groove 51 of the lowermost layer veneer 21 is bent substantially parallel to the direction to manufacture a bent plywood core material 6, and the other surface 4 of the bent plywood core material 6 is manufactured.
It is characterized in that the folding decorative plate 7 is attached to
It is a bent plywood core material that can be easily manufactured, the selection of the folding decorative plate 7 can be determined at a necessary stage, and can meet various needs.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a V-cut groove formed on a plywood plate according to a first embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of a V-cut groove portion of the plywood of the first embodiment.

FIG. 3 is a partially enlarged cross-sectional view of the plywood of the first embodiment, which is bent and a folding decorative plate is attached to the surface thereof.

FIG. 4 is a partially enlarged sectional view showing a state in which V-cut grooves having different shapes are formed on a plywood plate according to a second embodiment of the present invention.

FIG. 5 is a partially enlarged cross-sectional view of the plywood of the second embodiment bent and a decorative sheet attached to the surface thereof.

FIG. 6 is a partially enlarged cross-sectional view of the plywood of the third embodiment according to the present invention, which is bent 180 degrees and a decorative sheet is attached to the surface thereof.

FIG. 7 is a partially enlarged cross-sectional view showing a conventional bent plywood core material.

FIG. 8 is a partially enlarged cross-sectional view of a conventional bent plywood core material before bending.

FIG. 9 is a partially enlarged cross-sectional view showing a conventional bent plywood core material.

[Explanation of symbols]

1 plywood 2 Veneers that make up plywood 21 Bottom layer veneer 3 One side of plywood 4 Other surface of plywood 5 Bending groove 51 V cut groove 52 Non-V cut groove 53 Corner of the outer surface of the bent part (taper) 6 Folded plywood core material 7 Folded decorative board A Conventional plywood B Partial plywood of conventional example C Folding decorative plate of conventional example D Decorative sheet of conventional example E Conventional V-cut groove

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B002 AA06 AA12 BA01 BA08 BA14                       BB06                 2B200 AA01 AA07 BA01 DA04 EA06                       FA24 FA28                 2B250 BA03 CA11 DA04 EA02 EA13                       FA09 FA23 GA03 HA01

Claims (5)

[Claims] 1. A bending groove for bending the plywood from one surface of the plywood obtained by laminating a plurality of veneers with their fiber directions orthogonal to each other to the other surface, and the deepest part of the bending groove. Is formed as a V-cut groove on the bottom-layer veneer of the plywood so that the bottom-layer veneer is not divided, and the longitudinal direction of the V-cut groove and the fiber direction of the bottom-layer veneer are substantially parallel to each other. A V-cut bending method for a plywood core material, which comprises bending a V-cut groove portion of a lowermost single plate to produce a bent plywood core material. 2. The bending groove is composed of the V-cut groove and a non-V cut groove that closely fits when the V-cut groove is closed, and plywood when the non-V cut groove tightly fits. The V-cut bending method for a plywood core material according to claim 1, wherein a part of said one surface of said plywood fits into said non-V-cut groove. 3. A bending groove for bending the plywood from one surface of the plywood obtained by laminating a plurality of veneers with their fiber directions orthogonal to each other to the other surface, and the deepest part of the bending groove. Is formed as a V-cut groove on the bottom-layer veneer of the plywood so that the bottom-layer veneer is not divided, and the longitudinal direction of the V-cut groove and the fiber direction of the bottom-layer veneer are substantially parallel to each other. A bent plywood core material, which is manufactured by bending the V-cut groove portion of the lowermost single plate. 4. The bent plywood core material according to claim 3, wherein the bent groove is bent and an outer surface corner portion of the bent portion on the other surface of the plywood is tapered. 5. A bending groove for bending the plywood from one surface of the plywood, which is formed by laminating a plurality of veneers with their fiber directions orthogonal to each other, toward the other surface, and the deepest part of the bending groove. Is formed as a V-cut groove on the bottom-layer veneer of the plywood so that the bottom-layer veneer is not divided, and the longitudinal direction of the V-cut groove and the fiber direction of the bottom-layer veneer are substantially parallel to each other. A bent plywood core material, comprising manufacturing a bent plywood core material by bending the V-cut groove portion of the bottom layer veneer, and sticking a folded decorative plate on the other surface of the bent plywood core material.