JP7389699B2 - wood material - Google Patents

Description

The present invention relates to a wood material constructed by winding veneer in a spiral or concentric manner.

A wood material is known in which pulp mixed with and permeated with lignin is laminated in a spiral or concentric manner and compression molded into an arbitrary shape (see Patent Document 1).

Utility model registration No. 3066652

However, the above-mentioned wood material is made of wood using sheet-like pulp made by melting and molding waste paper, and it is possible to obtain a wood material with axial strength, shear strength, and bending strength higher than that of wood. The problem was that it was not possible.
The present invention provides a wooden material in which veneers are laminated in a spiral or concentric manner and has axial yield strength, shear strength, and bending strength higher than that of wood.

The wooden material according to the present invention is a wooden material in which veneers are laminated in a spiral or concentric manner, and a reinforcing plate is provided between the layers of the veneer , and the reinforcing plate is a wooden material in which veneers are laminated in a spiral or concentric manner. It is characterized in that the layers are provided at intervals along the circumferential direction between the layers.
Furthermore, the wooden material according to the present invention is a wooden material in which veneers are stacked in a spiral or concentric manner, and a reinforcing plate is provided between the layers of the veneer, and the reinforcing plate is provided on one side facing parallel to each other and having a rectangular cross section. It is characterized in that it is provided only between layers of veneer parallel to a pair of sides, or only between layers of veneer parallel to the other pair of parallel opposing sides of a rectangular cross section.
Further, the reinforcing plate is a metal plate.
According to the wood material according to the present invention, although it looks like wood, it has axial strength, shear strength, and bending strength higher than that of wood, and can provide a wood material with high yield strength .

(a) is a perspective view showing a wooden material, and (b) is a view showing a state in which winding of the reinforcing veneer around the core material is started (Embodiment 1). (a) is a perspective view showing a wooden material, and (b) is a view showing a state in which the reinforcing plate-equipped veneer starts being wrapped around a core material (Embodiment 2). (a) is a perspective view showing a wooden material, and (b) is a view showing a state in which the reinforcing plate-equipped veneer starts being wrapped around a core material (Embodiment 3). (a) is a perspective view showing a wooden material, and (b) is a view showing a state in which winding of the reinforcing veneer around the core material is started (Embodiment 4).

Embodiment 1
As shown in FIG. 1(a), the wooden material 1 according to the first embodiment is a wooden material in which veneers 2 are stacked in a spiral shape, and a reinforcing plate 3 is provided between the layers of the veneers 2. It is.
For example, if a metal plate such as a steel plate is used as the reinforcing plate 3, it will be composed of wood (veneer) and metal (reinforcing plate), and it will have the appearance (appearance) of wood, but with higher axial strength, shear strength, and bending strength than wood. It is possible to obtain hybrid wood that can be used as a structural material with strength. For example, it is possible to provide a hybrid wood that looks like wood but has higher axial strength, shear strength, and bending strength than wood, and can be used as a shaft material for columns, beams, etc.

As the veneer 2, for example, a log (raw wood) not shown in the figure is peeled to form a long strip of veneer in one direction.
For example, a desired length of veneer was used that was peeled using a Katsura peeling machine called Veneer Lace.
Note that the desired length is the length necessary to create a wooden material 1 with a desired cross-sectional area that can be used as a shaft material for a pillar material, a beam material, etc., for example.
For example, a wooden material 1 having the same length as the log can be obtained by spirally winding a reinforcing plate 3 and a veneer 2 of a desired length obtained by peeling a log.
In other words, the length of the wood material 1 in the axial direction is determined by the width dimension of the veneer 2 determined by the length of the log (length in the axial direction).

Next, a method for manufacturing the wood material will be explained.
The manufacturing method of the wood material 1 includes a veneer manufacturing process with a reinforcing plate 4 in which a reinforcing plate 3 is installed on the surface of a veneer 2, and a veneer 4 with a reinforcing plate being wound around a core material 5 in a spiral shape. , and a step of forming a wood material 1 into a wood material 1 having a predetermined cross-sectional shape.

In the veneer manufacturing process with reinforcing plates, first, a veneer 2 of a desired length is manufactured by peeling a log. As the veneer 2, for example, a veneer peeled with Katsura to a thickness of about 2 mm to 4 mm was used.
Then, a reinforcing plate 3 made of, for example, a steel plate with a thickness of about 0.15 mm to 1.6 mm was adhered to the entire surface of one side of the veneer using an adhesive, thereby producing a veneer 4 with a reinforcing plate.

The wood material forming step includes a wrapped body manufacturing step and a wood material forming step of forming the wrapped body into a wood material having a predetermined cross-sectional shape.

The wrapped body manufacturing process is, for example, a process of manufacturing a wrapped body in which the reinforcing plate-equipped veneer 4 is spirally wound around the core material 5.
As shown in FIG. 1(b), for example, a rectangular bar-shaped core material 5 is attached to a winding machine (not shown), one longitudinal end of the reinforcing plate-equipped veneer 4 is connected to the surface of the core material 5, and After applying adhesive to the surface of the reinforcing plate 3 of the veneer with a reinforcing plate 4, the core material 5 is rotated about the center line 5c of the core material 5, thereby forming the veneer with a reinforcing plate around the core material 5. A wrapped body in which 4 was wrapped in many layers was manufactured.

The wood material forming step is, for example, a step of compressing the manufactured wound body to form the wood material 1 having a predetermined cross-sectional shape.
For example, the wood material 1 is formed into a predetermined cross-sectional shape, for example, a rectangular cross-section, using a machine such as a heating compressor that compresses the wound body while heating it.
That is, according to the method for manufacturing a wood material according to Embodiment 1, it is possible to obtain a wood material 1 in which reinforcing plates 3 are provided between all the layers of spirally laminated (wound) veneers 2, 2... I can do it. For example, as shown in FIG. 1(a), it is possible to obtain a wood material 1 with a rectangular cross section in which reinforcing plates 3 are provided between all layers of spiral veneers 2, 2... parallel to each side of the rectangular cross section. I can do it.

In the invention disclosed in Patent Document 1 mentioned above, since it is not possible to obtain a wooden material with axial strength, shear strength, and bending strength higher than that of wood, it is not possible to obtain a wood material with axial strength, shear strength, and bending strength higher than that of wood. Moreover, it was not possible to obtain shaft materials such as columns and beams that looked like wood.
On the other hand, according to the wood material 1 of the first embodiment, the reinforcing plate 3 is provided between the layers of the veneer 2 stacked in a spiral manner, so that the veneer 2 and the reinforcing plate 3 are strongly spirally stacked. By being integrated with the veneer 2 and the reinforcing plate 3, the buckling strength of each other increases, and the wood material has an axial strength, shearing strength, and bending strength that are greater than the sum of the veneer 2 and the reinforcing plate 3. 1 can be obtained.
That is, it is possible to provide a wood material 1 that looks like wood but has axial strength, shear strength, and bending strength higher than that of wood, and can be used as a structural material with high yield strength.
For example, it is possible to provide a wooden material 1 that looks like wood and can be used as a shaft material for columns, beams, etc. that require high strength.
In the case of the first embodiment, as described above, a veneer 2 with a thickness of about 2 mm to 4 mm is used as the veneer 2, and a steel plate with a thickness of about 0.15 mm to 1.6 mm is used as the reinforcing plate 3. However, the thickness of the veneer 2 and reinforcing plate 3 to be used may be selected depending on the strength required of the wooden material 1.

Embodiment 2
According to Embodiment 1, a veneer 4 with a reinforcing plate manufactured by bonding a reinforcing plate 3 to the entire surface of one side of the veneer 2 using an adhesive was used, but as shown in FIG. 2(b), A veneer 4A with reinforcing plates is manufactured by installing reinforcing plates 3A, 3A, etc. at intervals along one direction (longitudinal direction) on one surface of the veneer 2, and the veneer 4A with reinforcing plates is used as a core material. It is also possible to manufacture a wound body by spirally winding the material 5, and further to form the wound body into a wooden material 1A having a predetermined cross-sectional shape.
That is, according to the method for manufacturing a wood material according to the second embodiment, the reinforcing plates 3A are provided at intervals along the circumferential direction between the layers of the spirally laminated (wound) veneers 2, 2... A wood material 1A can be obtained. For example, as shown in FIG. 2(a), the reinforcing plate 3A is placed only between the layers of veneers 2, 2, etc. that are parallel to one pair of parallel opposing sides of the rectangular cross section, or between the layers of the veneers 2, 2, etc. It is possible to obtain a wooden material 1A that is provided only between the layers of the veneers 2, 2, . That is, the wooden material 1A is provided with reinforcing plates 3A, 3A... only between the layers of the veneers 2, 2... that are perpendicular to one direction (for example, the vertical direction in FIG. 2(a)), and has excellent strength in one direction, or By providing reinforcing plates 3A, 3A, . . . only between layers of veneers 2, 2, .
In the case of Embodiment 2, for example, as shown in FIG. 2(b), the installation intervals a, c, and , the width dimension b of the reinforcing plate 3A is set.

According to the second embodiment, for example, as shown in FIG. 2(a), reinforcing plates 3A, 3A, etc. are provided only between layers orthogonal to one direction (for example, the vertical direction in FIG. 2(a)). It is possible to provide a wood material 1A that can be used as a structural material with excellent axial strength, shear strength, and bending strength.
For example, it is possible to provide a wooden material 1A that looks like wood but can be used as a shaft material for columns, beams, etc. that require high yield strength in one direction.
In the case of the second embodiment, it is preferable to use a veneer with a thickness of about 2 mm to 4 mm as the veneer 2, and use a steel plate with a thickness of about 4.5 mm to 40 mm as the reinforcing plate 3A. The thickness of the veneer 2 and reinforcing plate 3A to be used may be selected depending on the yield strength required of the wooden material 1A.

Embodiment 3
As shown in FIG. 3(b), a reinforcing plate 3 as a first reinforcing plate was installed on the entire surface of one side of the veneer 2, and the surface of the reinforcing plate 3 (i.e., facing the one side of the veneer 2) A veneer 4B with a reinforcing plate is manufactured in which a reinforcing plate 3A as a second reinforcing plate is installed at intervals along the longitudinal direction on the non-contact surface), and the veneer 4B with a reinforcing plate is spirally wrapped around the core material 5. It is also possible to manufacture a wound body wound into a shape, and further to form the wound body into a wooden material 1B having a predetermined cross-sectional shape.
That is, according to the method for manufacturing a wood material according to the third embodiment, the reinforcing plate 3 as the first reinforcing plate is provided between all the layers of the spirally stacked (wound) veneers 2, 2... In addition, it is possible to obtain a wooden material 1B in which reinforcing plates 3A as second reinforcing plates are provided at intervals along the circumferential direction between layers of spirally stacked veneers 2, 2.... For example, as shown in FIG. 3(a), reinforcing plates 3 as first reinforcing plates are provided between all the layers of veneers 2, 2, etc., which are made of wood with a rectangular cross section and are stacked in a spiral shape. and the reinforcing plate 3A as the second reinforcing plate is only between the layers of the veneers 2, 2... which are parallel to one pair of parallel opposing sides of the rectangular cross section, or between the layers of the veneers 2, 2... It is possible to obtain a wooden material 1B provided only between the layers of veneers 2, 2, . . . parallel to the other pair of sides. That is, the wooden material 1B is provided with reinforcing plates 3A, 3A... only between the layers of the veneers 2, 2... that are perpendicular to one direction (for example, the vertical direction in FIG. 3(a)), and has excellent strength in one direction, or By providing the reinforcing plates 3A, 3A... only between the layers of the veneers 2, 2... that are orthogonal to the other direction (for example, the left-right direction in FIG. 3(a)), it is possible to obtain the wood material 1B with excellent yield strength in the other direction. .
In addition, in the case of Embodiment 3, as shown in FIG. 3(b), similarly to Embodiment 2, the reinforcing plate 3A is installed in accordance with the winding widths a, b, and c on the side surface of the core material 5. The intervals a and c and the width b of the reinforcing plate 3A are set.

According to Embodiment 3, when compared with the wood material 1A of Embodiment 2, as shown in FIG. 3(a), for example, as shown in FIG. Wood material 1B with excellent durability can be provided.
In the case of the third embodiment, a veneer having a thickness of, for example, about 2 mm to 4 mm is used as the veneer 2, and a veneer having a thickness of, for example, about 0.15 mm to 1.6 mm is used as the reinforcing plate 3 (first reinforcing plate). Furthermore, it is preferable to use a steel plate with a thickness of about 4.5 mm to 40 mm as the reinforcing plate 3A (second reinforcing plate), but depending on the strength required of the wooden material 1B, , the thickness of the veneer 2 and reinforcing plate 3 to be used may be selected.

Embodiment 4
Moreover, the core material 5 having a cross-sectional shape other than a rectangle, the veneer 4 with a reinforcing plate described in Embodiment 1, the veneer 4A with a reinforcing plate described in Embodiment 2, or the veneer with a reinforcing plate described in Embodiment 3 A wood material having a cross-sectional shape other than a rectangle can also be manufactured using the veneer 4B.
For example, by using a core material 5 having an H-shaped cross section as shown in FIG. 4(b), it is also possible to manufacture a wood material 1X having an H-shaped cross-section as shown in FIG. 4(a), for example.
That is, even in the case of a wood material whose cross section is not rectangular, it is possible to obtain a wood material in which reinforcing plates 3 are provided between all layers of veneers 2, 2, . . . .
Furthermore, in the case of a wood material whose cross section is not rectangular, it is also possible to provide a wood material with excellent yield strength in any direction by appropriately determining the interlayer position where the reinforcing plate 3A is provided.

In addition, when manufacturing a wooden material having a highly uneven cross-sectional shape such as an H-shaped cross-section as in the fourth embodiment, the reinforcing plate-equipped veneer 4, the reinforcing plate-equipped veneer 4A, or , the wrapped body may be manufactured by wrapping the reinforcing plated veneer 4B around the core material 5.

Embodiment 5
In Embodiments 1 to 4, after producing a wrapped body in which veneer with a reinforcing plate is wound spirally around a core material, the wrapped body is formed into a wooden material having a predetermined cross-sectional shape. After producing a wrapped body in which a reinforcing plate-equipped veneer is concentrically wound around a core material, the wrapped body may be formed into a wood material having a predetermined cross-sectional shape.

In the case of Embodiment 5, for example, a wrapped body may be manufactured in which cylindrical bodies with a predetermined cross section and different diameters formed of plywood with reinforcing plates are sequentially attached concentrically to the outside of the core material, or reinforcing What is necessary is to manufacture a wrapped body in which the plated plywood is wrapped around the outside of the core material and attached concentrically.
That is, it is a wooden material in which the veneers 2, 2... are laminated (wound) concentrically, and a reinforcing plate as shown in Embodiments 1 to 4 is provided between the layers of the veneers 2, 2... It is possible to obtain hardened wood materials.

In addition, after manufacturing a wrapped body with a circular cross section by winding a reinforcing plate veneer spirally or concentrically around the core material using a core material with a circular cross section, the wrapped body is wrapped with a circular cross section or It may be formed into a wooden material having a predetermined cross-sectional shape.

Furthermore, the core material may have any cross-sectional shape.

Alternatively, after manufacturing a wrapped body with a circular cross section by spirally wrapping the veneer with a reinforcing plate from one end of the veneer with a reinforcing plate without using a core material, or by wrapping the veneer with a reinforcing plate in a concentric circle. After manufacturing a wound body having a circular cross-section, the wound body may be formed into a wooden material having a circular cross-section or a predetermined cross-sectional shape.

Further, in the second to fourth embodiments described above, the reinforcing plate 3A is provided between the layers of the veneers 2, 2... parallel to one pair of parallel opposing sides of the rectangular cross section, and between the layers of the veneers 2, 2... parallel to each other of the rectangular cross section. It is also possible to obtain a wood material provided between layers of veneers 2, 2, . . . parallel to the other pair of opposing sides. That is, reinforcing plates 3A, 3A, etc. are provided between the layers perpendicular to one direction (for example, the vertical direction in FIGS. 2(a), 3(a), and 4(a)), and reinforcing plates 3A, 3A, etc. ), Fig. 3(a), horizontal direction in Fig. 4(a)) and between the layers perpendicular to the horizontal direction), reinforcing plates 3A, 3A... are provided to obtain a wooden material having a rectangular cross section with excellent yield strength in one direction and the other direction. You can also do it.

Further, the reinforcing plates 3 and 3A are not limited to steel plates, and may be metal plates other than steel plates, or plates made of other materials such as concrete plates.

Furthermore, a wood material may be manufactured using a veneer with reinforcing plates, in which reinforcing plates are installed on both sides of the veneer.

1, 1A, 1B, 1X Wooden material, 2 Plywood, 3 Reinforcement plate (first reinforcement plate),
3A reinforcing plate (second reinforcing plate), 4, 4A, 4B veneer with reinforcing plate, 5 core material.

Claims (3)

A wood material in which veneers are laminated in a spiral or concentric manner,
Equipped with a reinforcing plate between the layers of veneer ,
A wooden material characterized in that reinforcing plates are provided at intervals along the circumferential direction between spirally or concentrically laminated veneer layers. A wood material in which veneers are laminated in a spiral or concentric manner,
Equipped with a reinforcing plate between the layers of veneer,
The reinforcing plate is provided only between layers of veneer that are parallel to one pair of parallel opposing sides of a rectangular cross section, or only between layers of veneer that are parallel to the other pair of parallel opposing sides of a rectangular cross section. A wood material characterized by being The wooden material according to claim 1 or 2, wherein the reinforcing plate is a metal plate .

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