JP5367498B2 - Veneer lace and laminate manufacturing method - Google Patents

Veneer lace and laminate manufacturing method Download PDF

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JP5367498B2
JP5367498B2 JP2009185116A JP2009185116A JP5367498B2 JP 5367498 B2 JP5367498 B2 JP 5367498B2 JP 2009185116 A JP2009185116 A JP 2009185116A JP 2009185116 A JP2009185116 A JP 2009185116A JP 5367498 B2 JP5367498 B2 JP 5367498B2
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克次 長谷川
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Meinan Machinery Works Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lightweight laminated plate simple in the manufacturing process and stable in adhesive property. <P>SOLUTION: A laminated plate of a laminated veneer material 15, plywood 26, or the like is formed by using a plurality of flat-rugged surface veneer single plates 14 each with one plate face formed of a flat face and with the other plate face formed of a rugged face with a plurality of rugged parts extended, and bonding them in the mutually facing state of the flat face and the rugged face of the adjacent veneer single plates. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

この発明は、ベニヤレース、当該ベニヤレースによって削成されたベニヤ単板を用いて積層板を製造する積層板の製造方法及び積層板に関する。   The present invention relates to a veneer lace, a method for manufacturing a laminated plate that uses a veneer single plate cut by the veneer lace, and a laminated plate.

循環可能な資源である木材を永続的に効率よく利用しようとしていく中で、ベニヤレースで旋削されたベニヤ単板を積層接着してつくる単板積層材（LVL）や合板等の積層板は、低質な原木からも安定した完成品ができる優秀な製品である。ここで単板積層材（LVL）とは接着するベニヤ単板の繊維方向が同方向であるもの、合板とはその繊維方向が直交しているものをいい、積層板はその両者を含む意である。
従来ベニヤレースは、刃先が長手方向に直線状に形成される直線状切削用刃物（以下「直線状刃物」という）を鉋台に取付け、原木を回転駆動するのと同時に刃物を原木に当接させながら前記鉋台を原木の回転軸方向へ移送機構によって移送させることにより、ベニヤ単板（以下「単板」という）を旋削している。そのため削成された単板の表面及び裏面は平坦な面を成し、複数枚の単板を積層接着した積層板は、単板の平坦な面同士を互に向い合わせて接着するため、接着層に隙間がなく、その積層板の木材密度は原木とほぼ変わりないものであった。
従って、従来ベニヤレースで旋削した単板から製造された積層板では、木材の強度や防音、断熱性などの性能を発揮させるため、ある特定の厚みを必要とする場合には、製品が重量化してしまうことが問題となっていた。 While trying to use timber, which is a resource that can be circulated, permanently and efficiently, laminated boards such as veneer laminates (LVL) and plywood made by laminating veneer veneers turned by veneer lace, It is an excellent product that can produce a stable finished product from low-quality raw wood. Here, the veneer laminate (LVL) means that the veneer veneer to be bonded has the same fiber direction, and plywood means that the fiber directions are orthogonal, and the laminate means to include both. is there.
Conventional veneer laces have a cutting tool (hereinafter referred to as a "straight cutting tool") with a cutting edge formed in a straight line in the longitudinal direction. However, the veneer veneer (hereinafter referred to as “single veneer”) is turned by moving the gantry in the direction of the rotation axis of the raw wood by a transfer mechanism. Therefore, the front and back surfaces of the cut veneer form a flat surface, and a laminated plate obtained by laminating and bonding a plurality of single plates adheres with the flat surfaces of the single plate facing each other. There were no gaps in the layers, and the wood density of the laminate was almost the same as that of the raw wood.
Therefore, in the case of a laminated board manufactured from a veneer lathe that has been turned by conventional veneer lace, the product becomes heavy when a certain thickness is required to demonstrate the performance of wood such as strength, soundproofing and heat insulation. It was a problem.

そこで本出願人は、先に特許文献１に開示する如く、従来のベニヤレースの直線状刃物の代わりに、削成される単板の厚さ方向に対して所定の間隔をおくように相対して厚さ方向と直交する方向へ互い違い状に連続する凹刃および凸刃を有した凹凸状切削用刃物（以下「凹凸状刃物」という）を鉋台に取付けて、表面及び裏面に溝部が互い違い状に現れる所定厚さの単板（以下この単板を「凹凸単板」という）を削成した後、これらの複数枚の凹凸単板を互いに繊維方向が平行となる方向で凸部と凸部が対向して一致するように積層接着して単板積層材を製造する方法、あるいは繊維方向が直交する方向で積層接着して合板を製造する方法を提案した。
この発明により単板の削成工程において、削成と同時に溝部を単板の表面及び裏面に形成することができるため、溝部の作成工程を増すことはなく効率性がよい。又かかる凹凸単板を用いて合板や単板積層材を製造することによって、内部に空隙を構成することができ、合板や単板積層材を軽量化できるという成果を挙げた。 Therefore, as disclosed in Patent Document 1, the present applicant is opposed to a conventional veneer lace straight blade so as to have a predetermined interval with respect to the thickness direction of a single plate to be machined. A concave / convex cutting tool having concave and convex blades that are staggered in a direction perpendicular to the thickness direction (hereinafter referred to as “concave / convex cutter”) is attached to a table, and grooves on the front and back surfaces are staggered. After cutting a single plate having a predetermined thickness (hereinafter referred to as a “concave single plate”) appearing in FIG. Proposed a method of manufacturing a single-plate laminate by laminating and bonding so that the two are opposed to each other, or a method of manufacturing a plywood by laminating and bonding in the direction in which the fiber directions are orthogonal.
According to the present invention, in the cutting process of the single plate, since the groove portion can be formed on the front surface and the back surface of the single plate simultaneously with the cutting, the manufacturing process of the groove portion is not increased and the efficiency is good. In addition, by producing a plywood or a single plate laminate using such a concavo-convex single plate, a void can be formed inside, and the plywood or single plate laminate can be reduced in weight.

特開平６−１５６１２号公報Japanese Patent Laid-Open No. 6-15612 特開平２−２２０８０５号公報JP-A-2-220805

しかしながら、特許文献１の発明は、軽量化された合板や単板積層材を効率よく製造するという十分な効果を上げたが、その製造工程に於いては以下に記述するいくつかの問題を引き起こしている。
単板積層材の製造においては、複数枚の凹凸単板の繊維方向を互に一致させると共に、向い合う単板の凸部の位置を一致させるように積層しなければならないが、乾燥前に削成し形成した凸部同士の間隔が、各単板の乾燥収縮による収縮量の差異によって乾燥後においては異なってしまい、向い合う凸部の位置がずれるという問題が発生している。
詳述すると、原木からの凹凸単板を旋削する工程においては、乾燥の効率性と単板の切削性を考慮し、６０％から２００％の高含水率の原木から単板を旋削すると同時に、表面及び裏面の凹凸部を形成している。つまり、凹凸単板の凹凸部の寸法は、高含水率の状態で決められている。一方、単板の接着の工程に於いては、十分な接着力を得るために含水率を所定値になるまで下げた低含水率の単板を用いている。そのため、旋削工程から接着工程に至るまでに単板を乾燥する工程が設けられている。 However, although the invention of Patent Document 1 has a sufficient effect of efficiently producing a light-weight plywood or a single-plate laminated material, the manufacturing process causes several problems described below. ing.
In the manufacture of single-plate laminates, the fiber directions of multiple concavo-convex single plates must be aligned with each other and the positions of the convex portions of the facing single plates must be aligned. The distance between the formed convex portions is different after drying due to the difference in shrinkage due to drying shrinkage of each single plate, causing a problem that the positions of the convex portions facing each other are shifted.
In detail, in the process of turning the concave and convex veneer from the raw wood, considering the efficiency of drying and the machinability of the veneer, turning the veneer from the raw wood having a high moisture content of 60% to 200%, Irregularities on the front and back surfaces are formed. That is, the dimension of the concavo-convex portion of the concavo-convex single plate is determined in a state of high moisture content. On the other hand, in the single plate bonding step, a single plate having a low moisture content is used in which the moisture content is lowered to a predetermined value in order to obtain a sufficient adhesion. Therefore, a process of drying the veneer is provided from the turning process to the bonding process.

このように単板を乾燥させることは接着性能のためだけではなく、製品の軽量化はもとより、製品後の変色や腐朽の防止、更には収縮や変形の防止などの効果があり、単板を加工する上で重要な工程とされている。
一般に木材の乾燥による収縮率は、樹種によって異なるが、例えばスギの場合は、接線方向（円周方向）６．６％、半径方向（放射方向）２．７％、繊維方向０．２％と言われている。しかし、この収縮率は成熟材の正常な部分（以下正常材とする）の値であり、樹木の髄を中心としたある一定の大きさ（スギでは直径１５ｃｍ程といわれている）の部分は未成熟材と呼ばれ、接線方向（円周方向）の収縮率は小さいが、繊維方向の収縮率は大きく、正常材の２倍から３倍にもなる。さらに、成熟材や未成熟材に限らず樹木の中には生育段階の環境の変化により発生した異常材が存在し、異常材の代表と言われる「あて材」の部分は、繊維方向の収縮率が正常材の５倍から１０倍にもなると言われている。
そのため、高含水率の状態で削成された凹凸単板を乾燥すると、その材が正常材か、「あて材」かによって乾燥収縮率が異なるため、凹凸単板の繊維方向に形成された凹凸部の寸法に差異が生じてしまう。例えば、ベニヤレースでの毛引き寸法を２０００ｍｍとして高含水率の原木から凹凸単板を削成した後乾燥すると、正常材部分のものは乾燥収縮率が０．２％となり１９９６ｍｍの仕上がりとなるが、「あて材」部分のものは乾燥収縮率が１％となり１９８０ｍｍとなってしまい、その寸法差は１６ｍｍにもなる。これらの単板を用いて単板積層材をつくると次のような問題が起こる。 Drying the veneer is not only for bonding performance, but also has the effect of reducing the weight of the product, preventing discoloration and decay after the product, and preventing shrinkage and deformation. This is an important process for processing.
In general, the shrinkage due to drying of wood differs depending on the tree species. For example, in the case of cedar, the tangential direction (circumferential direction) is 6.6%, the radial direction (radial direction) is 2.7%, and the fiber direction is 0.2%. It is said. However, this shrinkage rate is the value of the normal part of the matured wood (hereinafter referred to as normal wood), and the part of a certain size centered on the pith of the tree (which is said to be about 15 cm in diameter in cedar) It is called an immature material, and the shrinkage rate in the tangential direction (circumferential direction) is small, but the shrinkage rate in the fiber direction is large, which is 2 to 3 times that of a normal material. In addition, there are abnormal materials that occur due to environmental changes at the stage of growth, not limited to mature and immature materials. The rate is said to be 5 to 10 times that of normal materials.
For this reason, when the uneven veneer cut with a high moisture content is dried, the drying shrinkage varies depending on whether the material is normal or “destination”, so the unevenness formed in the fiber direction of the uneven veneer A difference will arise in the dimension of a part. For example, when a veneer lace having a hair drawing size of 2000 mm and drying a concavo-convex veneer from a high moisture content log, the normal material portion has a drying shrinkage of 0.2% and a finish of 1996 mm. In the case of the “addressing material” portion, the drying shrinkage rate is 1%, which is 1980 mm, and the dimensional difference is 16 mm. When these single plates are used to make a single plate laminate, the following problems occur.

図１は、特許文献１の凹凸単板を凸部と凸部が対向して一致するように３枚重ね合わせた単板積層材２１の斜視図で、矢印Ａ方向から見た正面図の左右端部と中央部を拡大した図を図２に示す。２２は正常材の凹凸単板で、２３は「あて材」の凹凸単板を示す。図２（ａ）は正常材２２を３枚重ねた場合で、図２（ｂ）は２枚の正常材２２の間に「あて材」２３を配置した場合を示す。図２（ａ）の正常材２２の同士の場合は、凸部と凸部が対向している部分が左端から右端にわたって一致している。それに対して、図２（ｂ）の場合は、「あて材」２３の長さが正常材２３より１６ｍｍ（寸法差Ｌ１０）短いため、仮に凸部と凸部の間隔Ｌ９を３２ｍｍとすると、左端の凸部を合わせると右端では凸部と凹部が対向する状態になってしまい、凸部と凸部とを突合せできず、接着することができない。また、間隔Ｌ９を大きくすることによりずれ量の割合を低減することができるが、この場合には板厚方向の強度が弱くなってしまう。
更に、「あて材」の程度の軽い場合や未成熟部などの乾燥収縮率が１％に満たない場合においても、対向する凸部の位置のずれにより凸部同士の接触面積が少ないために、接着不良や弱体接着をまねき、単位面積当たりの荷重が増すことによって接着の加圧の際に単板が板厚方向に潰れてしまうという問題も起きている。
一方、複数枚の凹凸単板を用いた合板の製造に於いては、凹凸単板の繊維方向を互に直交する方向で積層し接着する。よって、向い合った凸部の列の交差する部分でしか接着できないことになり、これ又接着面積が小さく接着の安定性が低いという欠点がある。
更には、通常、合板や単板積層材の表裏面は、その利用の都合上平坦な面が求められており、そのために積層構成においては表裏面には平坦な面の単板が必要になる。ところが特許文献１の発明では、一度凹凸状刃物を鉋台に装着すると凹凸単板しか削成することができないため、表面が平坦な単板を削成するためには、刃物を直線状刃物に取り換えるか、あるいは直線状刃物を装着したベニヤレースを別途設備するか、あるいは表裏面が平坦な単板を別途購入するか等しなければならず無駄が多かった。 FIG. 1 is a perspective view of a single plate laminated material 21 in which three concavo-convex single plates of Patent Document 1 are overlapped so that convex portions and convex portions face each other and coincide with each other. The figure which expanded the edge part and the center part is shown in FIG. Reference numeral 22 denotes a normal concavo-convex single plate, and reference numeral 23 denotes a concavo-convex single plate of “address material”. 2A shows a case where three normal materials 22 are stacked, and FIG. 2B shows a case where an “addressing material” 23 is arranged between the two normal materials 22. In the case of the normal materials 22 in FIG. 2A, the portions where the convex portions and the convex portions face each other coincide from the left end to the right end. On the other hand, in the case of FIG. 2B, since the length of the “addressing material” 23 is 16 mm (dimension difference L10) shorter than the normal material 23, if the distance L9 between the convex portions is 32 mm, the left end When the convex portions are combined, the convex portion and the concave portion face each other at the right end, and the convex portion and the convex portion cannot be abutted and cannot be bonded. Moreover, although the ratio of deviation | shift amount can be reduced by enlarging the space | interval L9, the intensity | strength of a plate | board thickness direction will become weak in this case.
Furthermore, even in the case where the degree of the “destination material” is light or the drying shrinkage rate of the immature part is less than 1%, the contact area between the convex parts is small due to the deviation of the positions of the opposing convex parts. There is also a problem that the single plate is crushed in the plate thickness direction during pressurization of adhesion due to an increase in the load per unit area, resulting in poor adhesion and weak adhesion.
On the other hand, in the production of plywood using a plurality of concavo-convex single plates, the fiber directions of the concavo-convex single plates are laminated and bonded in directions orthogonal to each other. Therefore, it can be bonded only at the intersecting portions of the rows of convex portions facing each other, and there is a disadvantage that the bonding area is small and the stability of bonding is low.
Furthermore, the front and back surfaces of plywood and single-plate laminates are usually required to have a flat surface for the convenience of use. For this reason, in a laminated configuration, a single plate having a flat surface is required for the front and back surfaces. . However, in the invention of Patent Document 1, once the concavo-convex cutter is mounted on the gantry, only the concavo-convex veneer can be cut. Therefore, to cut a veneer with a flat surface, the cutter is replaced with a linear cutter. In addition, it is necessary to install a veneer lace with a straight blade or to purchase a single veneer with flat front and back surfaces.

本発明は、このような技術背景のもと、軽くて強度のある積層板の製造工程で起きている前記のような問題を解決するために開発されたものであり、その目的は、一方の板面が平坦面、他方の板面は削成方向に複数の凹凸部が延びた凹凸面である平坦・凹凸面ベニヤ単板を削成し、一方の平坦・凹凸面単板の平坦面と他方の平坦・凹凸面単板の凹凸面とを互に向い合わせて積層接着することにより、製造工程も簡易で接着性も安定した、軽量な積層板を得ることにある。   The present invention has been developed in order to solve the above-mentioned problems occurring in the manufacturing process of a light and strong laminate, based on such a technical background. A flat / uneven surface veneer veneer is formed with a flat surface and the other plate surface is an uneven surface with a plurality of uneven portions extending in the cutting direction. Another object of the invention is to obtain a lightweight laminated plate having a simple manufacturing process and stable adhesion by laminating and bonding the other flat / uneven surface single plate with the uneven surface facing each other.

上記目的を達成するために、請求項１に記載の発明は、少なくとも、削成される原木の回転軸方向へ移送機構によって移送される２つの鉋台と、それぞれの鉋台に取付けられた切削用刃物とからなり、前記移送機構を、２つの切削用刃物により各別に削成するベニヤ単板の単板厚の合計の距離移送させることによって、２つの切削用刃物により同一又は異なる単板厚の帯状のベニヤ単板を同時に削成するベニヤレースであって、前記切削用刃物の一つを刃先が長手方向に直線状に形成される直線状切削用刃物に、もう一つを、刃物の厚み方向に凹凸状に形成された凹刃と凸刃とを刃物の長手方向に交互に配置し且つ各凹刃と凸刃の刃先が前記長手方向に凹凸状に形成される凹凸状切削用刃物とし、更に当該凹凸状刃先の起伏幅が凹刃、凸刃とも同一で且つ両起伏幅の合計が前記各別に削成するベニヤ単板の単板厚の合計よりも小さいことを特徴とする。
請求項２に記載の発明は、平坦・凹凸面帯状ベニヤ単板の製造方法であって、前記請求項１記載のベニヤレースを用いて、削成される原木から、一方の板面が平坦面、他方の板面は削成方向に複数本の凹凸部が延びた凹凸面である帯状のベニヤ単板を製造することを特徴とする。
請求項３に記載の発明は、平坦・凹凸面ベニヤ単板の製造方法であって、前記請求項２記載の帯状ベニヤ単板の製造方法によって製造された帯状ベニヤ単板を所定長さに切断して、一方の板面が平坦面、他方の板面は凹凸面であるベニヤ単板を製造することを特徴とする。
請求項４に記載の発明は、平坦・凹凸面ベニヤ単板であって、前記請求項３記載の平坦・凹凸面ベニヤ単板の製造方法によって製造されたことを特徴とする。
請求項５に記載の発明は、積層板の製造方法であって、前記請求項４記載の平坦・凹凸面ベニヤ単板を複数枚用いて積層板を製造するにあたり、積層板を構成する少なくとも２枚の平坦・凹凸面ベニヤ単板を、一方のベニヤ単板の平坦面と他方のベニヤ単板の凹凸面とを互に向い合わせて接着することを特徴とする。
請求項６に記載の発明は、積層板の製造方法であって、前記請求項５記載の積層板の製造方法において、接着する任意の１枚の平坦・凹凸面ベニヤ単板の凹凸面に、両板面が平坦面である板状体のいずれかの平坦面を接着することによって、積層板の表裏両面に平坦面が表われるよう複数のベニヤ単板を積層接着したことを特徴とする。
請求項７に記載の発明は、積層板の製造方法であって、前記請求項５記載の積層板の製造方法において、接着する任意の２枚の平坦・凹凸面ベニヤ単板を、一方のベニヤ単板の凹凸面と他方のベニヤ単板の凹凸面とを互に向い合わせて接着することによって、積層板の表裏両面に平坦面が表われるよう複数の平坦・凹凸面ベニヤ単板を積層接着したことを特徴とする。
請求項８に記載の発明は、積層板の一種である単板積層材の製造方法であって、前記請求項６又は請求項７記載の積層板の製造方法において、少なくとも接着する任意の２枚の平坦・凹凸面ベニヤ単板の繊維方向を互に同一にして接着することを特徴とする。
請求項９に記載の発明は、単板積層材であって、前記請求項８記載の単板積層材の製造方法によって製造されたことを特徴とする。
請求項１０に記載の発明は、単板積層材であって、前記請求項９記載の単板積層材において、単板積層材を構成する両最外層のベニヤ単板が交走木理をほぼ同一部位に揃えた対のベニヤ単板であることを特徴とする。
請求項１１に記載の発明は、積層板の一種である合板の製造方法であって、前記請求項６又は請求項７記載の積層板の製造方法において、少なくとも接着する任意の２枚の平坦・凹凸面ベニヤ単板の繊維方向を互に直交させて接着することを特徴とする。
請求項１２に記載の発明は、合板であって、前記請求項１１記載の合板の製造方法によって製造されたことを特徴とする。
請求項１３に記載の発明は、合板であって、前記請求項１２記載の合板において、合板を構成する両最外層のベニヤ単板が交走木理をほぼ同一部位に揃えた対のベニヤ単板であることを特徴とする。
In order to achieve the above object, the invention described in claim 1 is characterized in that at least two racks transferred by a transfer mechanism in the direction of the rotation axis of the raw wood to be cut, and a cutting tool attached to each rack. The transfer mechanism is a belt-like strip having the same or different single plate thickness by the two cutting blades by transferring the total distance of the single plate thickness of the veneer single plate to be cut separately by the two cutting blades. A veneer lace for simultaneously cutting a veneer veneer, wherein one of the cutting knives is a linear cutting knives in which the cutting edge is formed linearly in the longitudinal direction, and the other is a thickness direction of the knives. The concave and convex blades formed in a concave and convex shape are alternately arranged in the longitudinal direction of the cutter, and the concave and convex cutting edges are formed in a concave and convex shape in the longitudinal direction. Furthermore, the undulation width of the concavo-convex cutting edge is concave and convex. Total identical and both relief width, wherein the smaller than the sum of the single plate thickness of each other to KezuNaru veneer.
Invention of Claim 2 is a manufacturing method of a flat and uneven surface belt-like veneer veneer, Comprising: One board surface is a flat surface from the raw wood cut using the veneer lace of the said Claim 1. The other plate surface is characterized in that a belt-like veneer single plate having a concavo-convex surface in which a plurality of concavo-convex portions extend in the cutting direction is manufactured.
Invention of Claim 3 is a manufacturing method of a flat and uneven surface veneer single board, Comprising: The strip | belt-shaped veneer single board manufactured by the manufacturing method of the strip | belt-shaped veneer single board of the said Claim 2 is cut | disconnected by predetermined length. Thus, a veneer single plate is manufactured in which one plate surface is a flat surface and the other plate surface is an uneven surface.
The invention described in claim 4 is a flat / uneven surface veneer veneer, which is manufactured by the method for manufacturing a flat / uneven surface veneer veneer according to claim 3.
Invention of Claim 5 is a manufacturing method of a laminated board, Comprising: When manufacturing a laminated board using the flat and uneven | corrugated surface veneer single sheet of said Claim 4, at least 2 which comprises a laminated board A single flat / uneven surface veneer single plate is bonded so that the flat surface of one veneer single plate and the uneven surface of the other veneer single plate face each other.
Invention of Claim 6 is a manufacturing method of a laminated board, Comprising: In the manufacturing method of the laminated board of the said Claim 5, on the uneven surface of arbitrary one flat and uneven surface veneer single board to adhere, A plurality of veneer single plates are laminated and bonded so that the flat surfaces appear on both front and back surfaces of the laminated plate by adhering any flat surface of the plate-like body whose both plate surfaces are flat surfaces.
The invention described in claim 7 is a method for manufacturing a laminated board, and in the method for manufacturing a laminated board according to claim 5, any two flat / concave surface veneer single plates to be bonded are used as one veneer. Laminate and bond multiple flat / concave surface veneer single sheets so that the flat surface appears on both the front and back surfaces of the laminated board by bonding the uneven surface of the veneer and the uneven surface of the other veneer facing each other. It is characterized by that.
The invention according to claim 8 is a method for manufacturing a single-plate laminate which is a kind of laminate, and in the method for manufacturing a laminate according to claim 6 or 7, any two sheets to be bonded together The flat and concavo-convex surface veneer veneers are bonded in the same fiber direction.
The invention according to claim 9 is a single-plate laminate, and is manufactured by the method for producing a single-plate laminate according to claim 8.
The invention according to claim 10 is a veneer laminate, and in the veneer laminate according to claim 9, the veneer veneers of both outermost layers constituting the veneer laminate substantially perform crossing wood. It is characterized by being a pair of veneer single plates arranged in the same part.
Invention of Claim 11 is a manufacturing method of the plywood which is a kind of laminated board, Comprising: In the manufacturing method of the laminated board of the said Claim 6 or Claim 7, at least two arbitrary flat-plates to adhere | attach. It is characterized in that the fiber directions of the uneven veneer veneer are bonded so as to be orthogonal to each other.
The invention described in claim 12 is a plywood, which is manufactured by the method for manufacturing a plywood according to claim 11.
The invention according to claim 13 is a plywood, and in the plywood according to claim 12, a pair of veneer units in which the outermost plywood veneers constituting the plywood are arranged in a substantially identical position. It is a board.

請求項１，２に記載の発明によれば、直線状刃物と凹凸状刃物とをそれぞれ装着した２台の鉋台が同時に原木を旋削することにより、一方の面は平坦な面で他方の面は複数本の凹凸部が延びた凹凸面である平坦・凹凸面帯状ベニヤ単板を得ることができた。
請求項３，４に記載の発明によれば、一方の面は平坦な面で他方の面は複数本の凹凸部が延びた凹凸面である平坦・凹凸面ベニヤ単板を得ることができた。
請求項５に記載の発明によれば、凸部の接触面積が安定することにより、板厚方向の強度も安定し、製品の不良率が低減した。この問題の解消により、今まで使用することができなかった未成熟材や曲がり材などに多く含まれる「あて材」などの低質原木も有効に使用できるようになった。
請求項６に記載の発明によれば、請求項５の効果に加えて、両板面が平坦面である板状体を一枚用いることで、積層接着した状態でその表裏両面に平坦面が表われる。
請求項７に記載の発明によれば、請求項５の効果に加えて、積層接着した状態でその表裏両面に平坦面が表われるよう、任意の２枚の平坦・凹凸面ベニヤ単板の接着向きを凹凸面同士とすることによって、従来別途設備で切削するか、購入する必要のあった両板面が平坦面である板状体を用いなくても、１種類の平坦・凹凸面ベニヤ単板のみで表裏両面が平坦な合板や単板積層材を製造することが可能となった。
請求項８，９に記載の発明によれば、請求項６または７の効果に加えて、従来必要であった凸部と凸部を突き合わせる手間のかかる作業が無くなり、単に凹凸面と平坦面を合わせればよいために作業効率が向上した。また、各単板の収縮量の差異による接着不良や弱体接着の問題も解消した。
請求項１１，１２に記載の発明によれば、請求項６または７の効果に加えて、それぞれの接着面積が２倍以上に増加し、接着性能が格段に向上した。
請求項１０，１３に記載の発明によれば、現在使用されることなく原木の伐採地に放置されている低質原木からも十分に、高い歩留まりで、反りやひねりの無い、木材の性質を生かしつつも軽量化された合板や単板積層材の製造を効率的に行うことが可能となった。 According to the first and second aspects of the present invention, two slats each mounted with a linear cutter and a concavo-convex cutter simultaneously turn the log, so that one surface is a flat surface and the other surface is It was possible to obtain a flat / uneven surface veneer veneer having an uneven surface with a plurality of uneven portions extending.
According to the third and fourth aspects of the invention, a flat / uneven surface veneer single plate in which one surface is a flat surface and the other surface is an uneven surface with a plurality of uneven portions extending can be obtained. .
According to the invention described in claim 5, the contact area of the convex portion is stabilized, the strength in the thickness direction is also stabilized, and the defect rate of the product is reduced. By solving this problem, low-quality logs such as “relaxed wood”, which is abundant in immature and bent wood that could not be used until now, can now be used effectively.
According to the invention of claim 6, in addition to the effect of claim 5, by using a single plate-like body whose both plate surfaces are flat surfaces, flat surfaces are formed on both the front and back surfaces in a laminated state. Appear.
According to the seventh aspect of the invention, in addition to the effect of the fifth aspect, any two flat / uneven surface veneer single plates can be bonded so that the flat surfaces appear on both the front and back surfaces in a laminated state. By setting the orientation to uneven surfaces, one type of flat / concave surface veneer can be used alone without using a separate plate that has been cut with separate equipment or used to be flat. It became possible to produce a plywood or a single plate laminate with flat surfaces only on the plate.
According to the inventions described in claims 8 and 9, in addition to the effects of claim 6 or 7, the time-consuming work of hitting the convex portions with the convex portions, which has been necessary in the past, is eliminated. Work efficiency has improved. In addition, the problem of poor adhesion and weak adhesion due to the difference in shrinkage of each single plate was also solved.
According to invention of Claim 11, 12, in addition to the effect of Claim 6 or 7, each adhesion area increased 2 times or more, and the adhesive performance improved markedly.
According to the inventions described in claims 10 and 13, the low-quality raw wood that is not used at present and left in the logging area of the raw wood is sufficiently utilized, taking advantage of the nature of the wood without warping or twisting with a high yield. However, it has become possible to efficiently manufacture lightweight plywood and single-layer laminates.

３枚の凹凸単板を凸部と凸部が対向して一致させた単板積層材の斜視図（従来例）Perspective view of a single-plate laminated material in which three concavo-convex veneers are made to coincide with each other with their convex portions facing each other (conventional example) 図１中矢印Ａ方向から見た面の左右端部と中央部の拡大図Enlarged view of the left and right ends and the center of the surface viewed from the direction of arrow A in FIG. 本発明に係るベニヤレースの原木を旋削中の側断面説明図Side cross-sectional explanatory drawing in turning the log of the veneer lace according to the present invention 直線状切削用刃物５の斜視図Perspective view of linear cutting tool 5 凹凸状切削用刃物６の斜視図Perspective view of uneven cutting tool 6 凹凸状切削用刃物６の説明図Explanatory drawing of the uneven cutting tool 6 旋削中のスピンドルと各切削用刃物５，６の位置関係を示した説明図Explanatory drawing showing the positional relationship between the spindle during turning and the cutting tools 5 and 6 平坦・凹凸帯状ベニヤ単板２ａ，２ｂの各断面図Cross-sectional views of flat and uneven belt-like veneer single plates 2a and 2b ２台の鉋台の移送量ｆを示した説明図Explanatory drawing which showed the transfer amount f of 2 units 切削工程の後工程の説明図Explanatory drawing of the post process of the cutting process 平坦・凹凸面ベニヤ単板３プライの単板積層材１５の積層状態説明図Lamination state explanatory diagram of flat / concave surface veneer single veneer 3 ply veneer laminate 15 単板積層材１５の正面図Front view of veneer laminate 15 単板積層材１５をホットプレスと熱風発生器で熱圧締する状態を示す説明図Explanatory drawing which shows the state which heat-presses the single board laminated material 15 with a hot press and a hot air generator 平坦・凹凸面ベニヤ単板の正常材２４と「あて材」２５の積層状態説明図Laminated state explanatory diagram of normal material 24 and “addressing material” 25 of flat / uneven surface veneer veneer 平坦・凹凸面ベニヤ単板３プライの合板２６の積層状態説明図Lamination state explanatory drawing of plywood 26 of flat and uneven surface veneer single plate 3 ply 合板２６をホットプレスと熱風発生器で熱圧締する状態を示す説明図Explanatory drawing which shows the state which heat-presses the plywood 26 with a hot press and a hot air generator 合板２６の接着面積を示した説明図Explanatory drawing which showed the adhesion area of plywood 26 凹凸単板３プライの合板２８の斜視図（従来例）Perspective view of the plywood 28 of the uneven single plate 3 ply (conventional example) 合板２８の接着面積を示した説明図Explanatory drawing which showed the adhesion area of plywood 28 単板積層材２９の積層状態説明図Lamination state explanatory drawing of the single board laminated material 29 単板積層材２９の斜視図Perspective view of veneer laminate 29 合板３０の積層状態説明図Laminate state explanatory diagram of plywood 30 合板３０の斜視図Perspective view of plywood 30 単板積層材３１の積層状態説明図Laminate state explanatory diagram of the single plate laminate 31 単板積層材３１の斜視図Perspective view of veneer laminate 31 合板３２の積層状態説明図Plywood 32 lamination state explanatory diagram 合板３２の斜視図Perspective view of plywood 32 実施例４のベニヤレースの原木を旋削中の側断面説明図Side cross-section explanatory drawing in turning the veneer raw log of Example 4 実施例４のベニヤレースと２台の定尺切断装置の構成説明図Structure explanatory drawing of the veneer race of Example 4 and two standard cutting devices 実施例４のベニヤレースと１台の定尺切断装置の構成説明図Structure explanatory drawing of the veneer race of Example 4 and one standard cutting device 実施例１のベニヤレースの変更例の説明図Explanatory drawing of the example of a change of the veneer race of Example 1. 突刺回転駆動ロールを用いた変更例の説明図Explanatory drawing of the example of a change using a stab rotation drive roll 保持ロールとプレッシャーロールを用いた変更例の説明図Explanatory drawing of the example of a change using a holding roll and a pressure roll 単板積層板５４の積層状態説明図Lamination state explanatory drawing of the single board laminated board 54 合板５５の積層状態説明図Laminate state explanatory diagram of plywood 55

以下に図面を参照しながら、本発明の実施の一形態について説明する。ただし、以下の説明はあくまでも本発明の例示にすぎず、以下の記載によって発明の技術的範囲が限定されるものではない。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. However, the following description is merely an example of the present invention, and the technical scope of the invention is not limited by the following description.

図３は、本発明に係るベニヤレースによって原木を旋削している状態を示した側断面説明図である。原木１は、一対のスピンドル３によって両木口を挟んで支持され、駆動用モータ９によってスピンドル３と共に矢印Ｂ方向に回転駆動されている。
２台の鉋台４ａ，４ｂは、スピンドル３の回転軸を対称軸として一方の鉋台４ａを約１８０°回転移動したときに他方の鉋台４ｂにほぼ重なるような回転対称性の有る位置関係に配置され、また、それぞれがスピンドル３の回転軸（原木の回転軸と同じ）方向に向け進退自在に設置されている。 FIG. 3 is an explanatory side sectional view showing a state in which a log is turned by a veneer lace according to the present invention. The log 1 is supported by a pair of spindles 3 across both ends, and is driven to rotate together with the spindle 3 in the direction of arrow B by a drive motor 9.
The two racks 4a and 4b are arranged in a rotationally symmetrical positional relationship so that when the one rack 4a is rotated about 180 ° with the rotation axis of the spindle 3 as the axis of symmetry, the two racks 4a and 4b substantially overlap the other rack 4b. In addition, each is installed so as to be able to advance and retract in the direction of the rotation axis of the spindle 3 (same as the rotation axis of the raw wood).

移送機構１０は、駆動用モータ９と、駆動伝達装置８ａ，８ｂと、送りネジ７ａ，７ｂで構成されている。駆動用モータ９は、スピンドル３の回転駆動と２台の鉋台４ａ，４ｂの移送駆動をする。送りネジ７ａ，７ｂは、ボールネジや台形ネジ等で成り、２台の鉋台４ａ，４ｂをスピンドル３の回転軸方向（鉋台４ａは矢印Ｃ方向、鉋台４ｂは矢印Ｄ方向）へ移送する。駆動伝達装置８ａ，８ｂは、クラッチ等の動力の伝達を断続する装置と、替ギヤ方式等により減速比が変更可能な減速機とで構成される。原木１を旋削するときは、クラッチの動力の伝達を繋ぎ、駆動用モータ９から得た回転駆動力により、クラッチと減速機を介して送りネジ７ａ，７ｂを回転駆動し、各鉋台４ａ，４ｂを移送量ｆで移送する。この移送機構１０の減速比により、後述する旋削される単板の厚みにより予め決められた、スピンドル３の１回転当たりに移送する各鉋台４ａ，４ｂの移送量ｆを設定している。
原木１が回転駆動されると同時に、２台の鉋台４ａ，４ｂがスピンドル３の回転軸方向へ移送され、２台の鉋台４ａ，４ｂにそれぞれ固定された切削用刃物５，６により、単板２ａ，２ｂが旋削される。 The transfer mechanism 10 includes a drive motor 9, drive transmission devices 8a and 8b, and feed screws 7a and 7b. The drive motor 9 drives the rotation of the spindle 3 and the transfer of the two racks 4a and 4b. The feed screws 7a and 7b are composed of ball screws, trapezoidal screws, or the like, and transfer the two racks 4a and 4b in the direction of the rotation axis of the spindle 3 (the rack 4a is in the direction of arrow C and the rack 4b is in the direction of arrow D). The drive transmission devices 8a and 8b are configured by a device that intermittently transmits power, such as a clutch, and a speed reducer that can change a reduction ratio by a replacement gear system or the like. When turning the log 1, the transmission of the power of the clutch is connected, and the feed screws 7 a and 7 b are driven to rotate by the rotational driving force obtained from the drive motor 9 via the clutch and the speed reducer. Is transferred at a transfer amount f. Based on the reduction ratio of the transfer mechanism 10, a transfer amount f of each of the racks 4 a and 4 b that is transferred per one rotation of the spindle 3, which is determined in advance by the thickness of a single plate to be turned later, is set.
At the same time as the log 1 is driven to rotate, the two racks 4a, 4b are transferred in the direction of the axis of rotation of the spindle 3 and the cutting blades 5, 6 fixed to the two racks 4a, 4b, respectively, 2a and 2b are turned.

切削用刃物５，６は、その刃先５ａ，６ａ（切削用刃物６の刃先６ａについては、後述する仮想刃先）がスピンドル３の回転軸と平行となるように各鉋台４ａ，４ｂに固定されている。図４に切削用刃物５の斜視図を示す。切削用刃物５は従来ベニヤレースで使われている、刃先が直線状の直線状切削用刃物（以下「直線状刃物」という）５である。
一方、図５に切削用刃物６の斜視図を示す。切削用刃物６は、刃物の厚み方向に凹凸状に形成された凹刃と凸刃とを刃物の長手方向に交互に配置した凹凸状切削用刃物６である。図６は、凹凸状切削用刃物（以下「凹凸状刃物」という）６の（ａ）上面図、（ｂ）正面図と側面図、（ｃ）背面図、（ｄ）Ｇ部拡大図を示す。図６（ｄ）の太い実線で描いた線が上面から見た刃先６ａの形状を表している。刃先６ａは、刃幅をＬ１とした凸刃部６ｂと刃幅をＬ３とした凹刃部６ｃとで成り、刃物の長手方向に渡って凸刃部６ｂと凹刃部６ｃとを交互に連続した凹凸状となっている。又凸刃部６ｂと凹刃部６ｃは仮想刃先６ｅ（細い２点鎖線）（切削用刃物６の刃先が直線状であったと仮定した刃先）からの起伏幅が同一になっており、起伏幅の合計が凹凸差Ｌ５である。凸刃部６ｂと凹刃部６ｃの間は、Ｌ２，Ｌ４の幅に対して凹凸差Ｌ５の傾斜刃部６ｄを形成している。本実施例では、Ｌ１を１０ｍｍ、Ｌ２を６ｍｍ、Ｌ３を１０ｍｍ、Ｌ４を６ｍｍ、Ｌ５を５ｍｍとした。従って前記起伏幅は２．５ｍｍとなる。 The cutting blades 5 and 6 are fixed to the respective bases 4a and 4b so that the cutting edges 5a and 6a (the cutting edge 6a of the cutting blade 6 will be described later) are parallel to the rotation axis of the spindle 3. Yes. FIG. 4 shows a perspective view of the cutting blade 5. The cutting tool 5 is a linear cutting tool (hereinafter referred to as “straight cutting tool”) 5 having a straight cutting edge, which is conventionally used in veneer laces.
On the other hand, FIG. 5 shows a perspective view of the cutting blade 6. The cutting tool 6 is an uneven cutting tool 6 in which concave blades and convex blades formed in an uneven shape in the thickness direction of the blade are alternately arranged in the longitudinal direction of the blade. 6A is a top view, FIG. 6B is a front view and a side view, FIG. 6C is a rear view, and FIG. 6D is an enlarged view of the G portion. . The line drawn with the thick solid line of FIG.6 (d) represents the shape of the blade edge | tip 6a seen from the upper surface. The blade edge 6a is composed of a convex blade portion 6b having a blade width L1 and a concave blade portion 6c having a blade width L3, and the convex blade portions 6b and the concave blade portions 6c are alternately continuous over the longitudinal direction of the blade. It is uneven. In addition, the undulation width from the imaginary cutting edge 6e (thin two-dot chain line) (the cutting edge assuming that the cutting edge of the cutting blade 6 is linear) is the same between the convex cutting edge 6b and the concave cutting edge 6c, and the undulation width. Is the unevenness difference L5. Between the convex blade portion 6b and the concave blade portion 6c, an inclined blade portion 6d having an unevenness difference L5 is formed with respect to the widths of L2 and L4. In this example, L1 was 10 mm, L2 was 6 mm, L3 was 10 mm, L4 was 6 mm, and L5 was 5 mm. Therefore, the undulation width is 2.5 mm.

次に、図７に旋削中のスピンドル３と切削用刃物５，６の位置関係を示す。仮にスピンドル３の回転軸芯の点をＰ０、切削用刃物５の刃先の点をＰ１、切削用刃物６の凸刃部６ｂと凹刃部６ｃの刃先の点をＰ２とＰ３とする。またＰ２とＰ３の中間点（仮想刃先の点）をＰ４、起伏幅をＳ３とする。
スピンドル３に対する切削用刃物５，６の原木１の円周方向の位置は、スピンドル３の回転軸芯Ｐ０から各鉋台４ａ，４ｂの移送方向（矢印Ｃ，Ｄ）に平行に引いた基準線（細い一点鎖線）より、間隔Ｓ０（本実施例では０．５ｍｍ）だけ原木１の回転方向（矢印Ｂ）側にずれた個所に各刃物５，６の刃先の点Ｐ１,Ｐ４が位置するように備えられる。また、旋削中の各鉋台４ａ，４ｂの移送方向の位置は、Ｐ０（スピンドル３の回転軸芯の点）からＰ１（切削用刃物５の刃先の点）までの距離Ｓ１と、Ｐ０（スピンドル３の回転軸芯の点）からＰ４（切削用刃物６の刃先の点Ｐ２とＰ３の中間点）までの距離Ｓ２とが常に等しくなる位置関係を常に保ちながら旋削する。 Next, FIG. 7 shows the positional relationship between the spindle 3 and the cutting tools 5 and 6 during turning. Suppose that the point of the rotation axis of the spindle 3 is P0, the point of the cutting edge 5 is P1, and the points of the protruding edge 6b and the recessed edge 6c of the cutting edge 6 are P2 and P3. Further, an intermediate point between P2 and P3 (a point at the virtual cutting edge) is P4, and the undulation width is S3.
The position of the cutting wood 5 and 6 with respect to the spindle 3 in the circumferential direction of the log 1 is a reference line drawn in parallel with the direction of transfer (arrows C and D) of the racks 4a and 4b from the rotation axis P0 of the spindle 3. The points P1 and P4 of the cutting edges of the cutters 5 and 6 are located at positions shifted from the thin dot-dash line by the interval S0 (0.5 mm in this embodiment) toward the rotation direction (arrow B) of the log 1. Provided. Further, the positions in the transfer direction of the respective racks 4a and 4b during turning are the distance S1 from P0 (the point of the rotation axis of the spindle 3) to P1 (the point of the cutting edge of the cutting blade 5) and P0 (spindle 3). Turning while always maintaining the positional relationship in which the distance S2 from P4 (the center point of the cutting edge 6 of the cutting edge 6) to the distance S2 is always equal.

次に、切削された平坦・凹凸面帯状単板２ａ，２ｂについて説明する。図７の平坦・凹凸面帯状単板２ａ，２ｂの各断面、Ｅ−Ｅ断面とＦ−Ｆ断面を図８に示す。平坦・凹凸面帯状単板（以下「平凸帯状単板」という）２ａ，２ｂは、一方の板面が平坦面、他方の板面は削成方向に複数本の凹凸部が延びた凹凸面となっている。図８（ａ）の平凸帯状単板２ａは、凸部の幅が凹凸状刃物６の凹刃部６ｃのＬ３寸法によって決定され、凹部の幅は凸刃部６ｂのＬ１寸法によって決まる。一方、図８（ｂ）の平凸帯状単板２ｂは、凸部の幅が凹凸状刃物６の凸刃部６ｂのＬ１寸法によって決定され、凹部の幅は凹刃部６ｃのＬ３寸法によって決まる。また、平凸帯状単板２ａ,２ｂの凹凸差は、凹凸状刃物６の凹凸差Ｌ５（本実施例では５ｍｍ）に相当する。   Next, the cut flat / uneven surface strip-shaped single plates 2a and 2b will be described. FIG. 8 shows the cross sections, the EE cross section, and the FF cross section of the flat / uneven surface strip-shaped single plates 2a and 2b in FIG. The flat / uneven surface strip single plate (hereinafter referred to as “plano-convex strip single plate”) 2a, 2b has a flat surface on one plate surface, and an uneven surface with a plurality of uneven portions extending in the cutting direction on the other plate surface. It has become. In the plano-convex belt-like single plate 2a shown in FIG. 8A, the width of the convex portion is determined by the L3 dimension of the concave blade portion 6c of the concavo-convex blade 6, and the width of the concave portion is determined by the L1 dimension of the convex blade portion 6b. On the other hand, in the plano-convex single plate 2b of FIG. 8B, the width of the convex portion is determined by the L1 size of the convex blade portion 6b of the concave and convex blade 6, and the width of the concave portion is determined by the L3 size of the concave blade portion 6c. . Moreover, the unevenness | corrugation difference of the plano-convex-shaped single plate 2a, 2b is corresponded to the unevenness | corrugation difference L5 (this example 5 mm) of the uneven | corrugated shaped cutter 6. FIG.

次に、図９にて２台の鉋台４ａ，４ｂの移送量ｆについて説明する。本来、２台の鉋台を有するベニヤレースにおける鉋台の移送量は、各別に削成する単板の単板厚の合計の値となるが、本発明においては削成される単板の一方の面が凹凸面であるため、何をもって単板厚というのか疑義が生じる。後述するように当該単板を積層接着して製品とする場合は平坦な面から凸部の頂点までの距離が実質的な単板厚（以下「実質単板厚」とする）となるが、移送量を定める場合には平坦面から凹凸部の中間点までの距離を単板厚（以下「移送単板厚」とする）とする。即ち仮想刃先によって削成した単板厚に相当する。具体的には図８（ｂ）の平凸帯状単板２ｂを表裏反転させ、図８（ａ）の平凸帯状単板２ａに凹凸面同士を対向させ重ねた状態を図９に示す。この重ね合わせた状態の単板２ｃは、仮想的に凹凸状刃物６を使わずに、直線状刃物５のみで旋削した２枚の単板を重ね合わせたと考えることができる。そのため、この凹凸面同士を重ね合わせた状態の帯状単板２ｃの厚みＬ７が、鉋台４ｂの移送量ｆとなる。つまり、スピンドル３の１回転当りの２台の鉋台４ａ，４ｂの移送量ｆは、切削したい平凸帯状単板２ａ,２ｂの凹凸部の凹凸差に関係なく、平凸帯状単板２ａと２ｂの凹凸面同士を重ね合わせた状態の単板２ｃの厚みＬ７の値を設定する。ただし、図９より明らかなように移送量ｆは、凹凸状刃物６の凹凸差Ｌ５よりも大きくなくてはならない。
よって本実施例では移送量ｆを１０ｍｍとしたため、平凸帯状単板２ａ,２ｂの凹凸面同士を重ね合わせた状態の厚みＬ７は１０ｍｍとなり、（Ｌ５＋Ｌ６＋Ｌ６）＝Ｌ７より、Ｌ６は２．５ｍｍとなり、実質単板厚（Ｌ５＋Ｌ６）は７．５ｍｍ、移送単板厚（Ｌ５／２＋Ｌ６）は５ｍｍの平凸帯状単板２ａ，２ｂとなる。 Next, the transfer amount f of the two racks 4a and 4b will be described with reference to FIG. Originally, the transport amount of the rack in the veneer race having two racks is the total value of the single sheet thicknesses of the single sheets to be machined separately, but in the present invention, one surface of the single board to be machined Is a concavo-convex surface, the question arises as to what the single plate thickness is. As will be described later, when the single plate is laminated and made into a product, the distance from the flat surface to the top of the convex portion is a substantial single plate thickness (hereinafter referred to as “substantially single plate thickness”). When determining the transfer amount, the distance from the flat surface to the midpoint of the uneven portion is defined as a single plate thickness (hereinafter referred to as “transfer single plate thickness”). That is, it corresponds to a single plate thickness cut by a virtual blade edge. Specifically, FIG. 9 shows a state in which the plano-convex single plate 2b of FIG. 8B is turned upside down and the concave and convex surfaces are opposed to each other on the plano-convex single plate 2a of FIG. 8A. It can be considered that this single plate 2c in a superposed state is a superposition of two single plates that are turned only by the straight blade 5 without using the concavo-convex blade 6 virtually. Therefore, the thickness L7 of the band-shaped single plate 2c in a state where the uneven surfaces are overlapped becomes the transfer amount f of the rack 4b. That is, the transfer amount f of the two racks 4a and 4b per one rotation of the spindle 3 does not depend on the unevenness of the uneven portions of the flat and convex strips 2a and 2b to be cut, but the plano-convex strips 2a and 2b. A value of the thickness L7 of the single plate 2c in a state where the concavo-convex surfaces are overlapped is set. However, as apparent from FIG. 9, the transfer amount f must be larger than the unevenness difference L <b> 5 of the uneven blade 6.
Therefore, since the transfer amount f is 10 mm in this embodiment, the thickness L7 in the state where the uneven surfaces of the plano-convex single plates 2a and 2b are overlapped is 10 mm, and (L5 + L6 + L6) = L7, L6 is 2.5 mm. The substantially single plate thickness (L5 + L6) is 7.5 mm, and the single transfer plate thickness (L5 / 2 + L6) is 5 mm.

次に、この切削工程の後工程について図１０にて説明する。ロータリーレースで旋削された平凸帯状単板２ａ，２ｂは、通常の合板を製造するのと同様に、回転刃１１とアンビルロール１２から成る定尺切断装置１３によって、単板の繊維と直交する方向の長さが所望の長さＬ８となるように定尺切断され、複数枚の平坦・凹凸面ベニヤ単板（以下「平凸単板」という）１４となる。その後、接着工程で接着剤の要求する含水率にするため乾燥装置（図示せず）で乾燥をする。   Next, the post-process of this cutting process will be described with reference to FIG. The plano-convex strips 2a and 2b, which are turned by a rotary race, are orthogonal to the fibers of a single plate by a regular cutting device 13 comprising a rotary blade 11 and an anvil roll 12 in the same manner as manufacturing a normal plywood. The length of the direction is cut to a desired length L8 to form a plurality of flat / uneven surface veneer single plate (hereinafter referred to as “plano-convex single plate”) 14. Thereafter, drying is performed with a drying device (not shown) in order to obtain a moisture content required by the adhesive in the bonding step.

次に、これらの工程を経て得られた平凸単板を複数枚積層接着して積層板を製造する工程を説明する。
本発明は、基本的に前記工程を経て得られた平凸単板を任意の複数枚積層接着して、各積層単板の繊維方向を互に同一にした単板積層材又は各積層単板の繊維方向を互に直交させた合板を製造するものであり、その際、一方の単板の平坦面と他方の単板の凹凸面とを互に向い合わせて接着することを特徴とする。この接着方法を以下「平凸接着」という。
図１１は、３枚の平凸単板１４を互いの繊維方向を同一にして、「平凸接着」をすべく配置した３プライの単板積層材１５の積層状態を示す。図１１の矢印Ｇ方向から見た圧締状態の単板積層材１５の正面図を図１２に示す。最上層の平凸単板１５ａと２層目の平凸単板１５ｂのそれぞれの凹凸面側の凸部に、塗布装置（図示せず）にて熱硬化性接着剤１６を塗布し重ね合わせて、ホットプレス１８で接着剤１６の硬化に要する所定時間熱圧締する。接着剤１６は２層目に位置する平凸単板１５ｂの表裏両面に塗布すると、塗布回数が少なく効率が良いが、接着に必要のない凹部にまで塗布してしまうため、接着剤のコスト削減のためには凹凸面側の凸部にのみ接着剤１６を塗布するほうが望ましい。 Next, a process of manufacturing a laminated board by laminating and bonding a plurality of plano-convex single plates obtained through these processes will be described.
The present invention is basically a single plate laminated material or each laminated single plate obtained by laminating and bonding any number of plano-convex veneers obtained through the above-mentioned steps so that the fiber directions of each laminated single plate are the same. In this case, the plywood is manufactured by making the flat surface of one single plate and the concavo-convex surface of the other single plate face each other and adhere to each other. This bonding method is hereinafter referred to as “plano-convex bonding”.
FIG. 11 shows a laminated state of a three-ply single-plate laminate 15 in which three plano-convex single plates 14 are arranged in the same fiber direction and are arranged for “plano-convex adhesion”. FIG. 12 shows a front view of the single-plate laminated material 15 in a pressed state as viewed from the direction of arrow G in FIG. A thermosetting adhesive 16 is applied to the convex portions on the concave and convex surfaces of the uppermost plano-convex veneer 15a and the second layer of plano-convex veneer 15b with a coating device (not shown). Then, the hot pressing 18 is hot-pressed for a predetermined time required to cure the adhesive 16. If the adhesive 16 is applied to both front and back surfaces of the plano-convex single plate 15b located in the second layer, the number of times of application is small and efficient, but the adhesive is applied even to the concave portions that are not required for bonding, so the cost of the adhesive is reduced. Therefore, it is desirable to apply the adhesive 16 only to the convex portion on the uneven surface side.

ホットプレス１８は、蒸気や電気ヒーターなどを熱源として上熱盤１８ａと下熱盤１８ｂを熱硬化性接着剤１６が硬化するために必要な所望の温度（本実施例では１３５℃、熱硬化性接着では通常１１０℃〜１４０℃）に保ちつつ、所定の圧力（本実施例では０．８ＭＰａ、熱硬化性接着では通常０．８〜１．２ＭＰａ）で単板積層材１５を熱圧締し、接着剤を硬化させる。熱圧締は、ホットプレスのみで行ってもよいが、図１３に示すように、ホットプレスの熱圧締と同時に平凸単板１５ａと平凸単板１５ｂ又は平凸単板１５ｂと平凸単板１５ｃの凹凸部によってできた空隙１７に熱風発生器１９の熱風２０を吹き込むことにより、より短い時間に均一で安定した接着剤の硬化を達成でき、単板積層材１５の安定した接着を得ることができる。   The hot press 18 has a desired temperature (135 ° C., thermosetting in this embodiment) required for the thermosetting adhesive 16 to cure the upper heating plate 18a and the lower heating plate 18b using steam or an electric heater as a heat source. The veneer laminate 15 is hot-pressed at a predetermined pressure (0.8 MPa in the present embodiment, usually 0.8-1.2 MPa in thermosetting bonding) while maintaining at 110 ° C. to 140 ° C. for bonding. , Cure the adhesive. Although hot pressing may be performed only by hot pressing, as shown in FIG. 13, simultaneously with hot pressing of hot pressing, plano-convex single plate 15a and plano-convex single plate 15b or plano-convex single plate 15b and plano-convex. By blowing the hot air 20 of the hot air generator 19 into the gap 17 formed by the concave and convex portions of the single plate 15c, uniform and stable curing of the adhesive can be achieved in a shorter time, and the single plate laminated material 15 can be stably bonded. Can be obtained.

従来の凹凸単板の凸部と凸部が対向して一致するように重ね合わせて単板積層材２１を製造する方法においては、図２（ｂ）に示すように、正常材の凹凸単板２２と正常材の５倍から１０倍も繊維方向の乾燥収縮率が大きい「あて材」の凹凸単板２３とで積層した場合、乾燥による収縮量が異なるために、対向する凸部と凸部を突き合わせる作業が困難である問題や、対向する凸部と凸部のずれにより接着面積が減少し、積層接着された単板積層材２１の接着不良や弱体接着を招くなどの問題が挙げられていた。
それに対して本発明では図１４に示すように、平凸単板の正常材２４と平凸単板の「あて材」２５を積層接着する場合は、乾燥収縮量の差があったとしても接着面積は変わることなく一定で、安定した接着性を得ることができる。また、従来必要であった凸部と凸部を対向させる手間のかかる工程を省くことができ、効率的に単板積層材を製造することが可能となった。このような効果は、「あて材」に限らず樹木の中心部分には必ず存在する未成熟材においても同様の効果を発揮する。 In the conventional method of manufacturing the single plate laminated material 21 so that the convex portions and the convex portions of the concave / convex single plate are opposed and coincident with each other, as shown in FIG. 22 and the concavo-convex veneer 23 of “dressing material” having a drying shrinkage rate that is 5 to 10 times larger than that of a normal material. There are problems such as difficulty in the work of abutting each other and problems such as poor adhesion and weak adhesion of the single-plate laminated material 21 laminated and bonded due to a decrease in the bonding area due to the deviation between the convex portions facing each other. It was.
On the other hand, in the present invention, as shown in FIG. 14, when the normal material 24 of the plano-convex single plate and the “addressing material” 25 of the plano-convex single plate are laminated and bonded, even if there is a difference in the amount of drying shrinkage, The area remains constant and stable adhesiveness can be obtained. In addition, it is possible to omit the time-consuming process of making the convex portions and the convex portions facing each other, which has been conventionally required, and it is possible to efficiently manufacture a single plate laminate. Such an effect is exhibited not only in the “relaxed wood” but also in an immature wood that always exists in the center of the tree.

図１６は、３枚の平凸単板１４を互いの繊維方向を直交させて「平凸接着」すべく配置した３プライの合板２６の積層状態を示す。合板の場合は積層する単板の繊維方向を互に直交させるから、縦横のサイズが異なる２種類の平凸単板を重ね合わせることになる。図１５の実施例においては、最上層の平凸単板２６ａと最下層の平凸単板２６ｃは繊維方向に長く、２層目の平凸単板２６ｂは繊維方向と直交する方向に長い単板となる。本発明にかかるベニヤレースによって製造される平凸単板は単板の繊維方向と直交する方向に凹凸部が形成される。故に本実施例における２層目の平凸単板２６ｂのように単板の繊維方向に短く、繊維方向と直交する方向に長いサイズの平凸単板を製造するには、長さの短い（繊維方向のサイズに見合う長さの）原木を削成するか、逆に長さの長い（繊維方向のサイズの２倍の長さに見合う長さの）原木を削成して半分の長さに切断する等、いずれにしても別工程によって製造された２種類の平凸単板を用意することになる。３枚の平凸単板２６ａ〜２６ｃを接着、加圧する工程は、前記単板積層材１５の製造工程と同様であるので省略する。   FIG. 16 shows a laminated state of a three-ply plywood 26 in which three plano-convex single plates 14 are arranged so as to be “plano-convex bonded” with their fiber directions orthogonal to each other. In the case of plywood, since the fiber directions of the laminated single plates are orthogonal to each other, two types of plano-convex single plates having different vertical and horizontal sizes are overlapped. In the embodiment of FIG. 15, the uppermost plano-convex single plate 26a and the lowermost plano-convex single plate 26c are long in the fiber direction, and the second plano-convex single plate 26b is a single unit that is long in the direction perpendicular to the fiber direction. It becomes a board. In the plano-convex veneer produced by the veneer lace according to the present invention, an uneven portion is formed in a direction orthogonal to the fiber direction of the veneer. Therefore, in order to manufacture a plano-convex veneer that is short in the fiber direction of the veneer and long in the direction perpendicular to the fiber direction, like the plano-convex veneer 26b of the second layer in this embodiment, the length is short ( Cut the log (length suitable for the size in the fiber direction), or conversely cut the long log (length corresponding to twice the size in the fiber direction) and cut it in half. In any case, two kinds of plano-convex veneers manufactured by separate processes are prepared. The process of bonding and pressurizing the three plano-convex single plates 26a to 26c is the same as the manufacturing process of the single plate laminate 15 and will not be described.

次に合板２６の接着の安定性について説明する。図１７は合板２６の上面図で、最上層の平凸単板２６ａと２層目の平凸単板２６ｂの接着している面の部分に斜線ハッチングを記した図である。一方、従来技術において示した３枚の凹凸単板２８ａ，２８ｂ，２８ｃを繊維方向が互いに直交する方向で積層接着した合板２８の斜視図を図１８に示す。そして合板２６と同様に、上面図に最上層の単板２８ａと２層目の単板２８ｂの接着している面の部分に斜線ハッチングを記したものを図１９に示す。従来合板２８では、図１９に示すように凹凸単板２８ａの凸部列と２８ｂの凸部列の交差している正方形の部分しか接着していなのに対して、本発明の合板２６では図１７に示すように、平凸単板２６ａの凸部列全面が接着するため、接着面積が２倍以上となり、安定した強固な接着が可能となる。また、本発明の合板２６では凸部分に塗布した接着剤全てが有効に接着するのに対して、従来合板２８では塗布した接着剤の４割程度しか有効に接着に寄与していないため非効率的である。   Next, the adhesion stability of the plywood 26 will be described. FIG. 17 is a top view of the plywood 26, and is a diagram in which hatched hatching is given to the part of the bonded surface of the uppermost plano-convex single plate 26a and the second layer of plano-convex single plate 26b. On the other hand, FIG. 18 shows a perspective view of the plywood 28 in which the three concavo-convex single plates 28a, 28b, 28c shown in the prior art are laminated and bonded in the direction in which the fiber directions are orthogonal to each other. As in the case of the plywood 26, FIG. 19 shows a top view in which hatched hatching is added to the portion of the surface where the uppermost single plate 28a and the second single plate 28b are bonded. In the conventional plywood 28, as shown in FIG. 19, only the square portion where the convex portion row of the concavo-convex single plate 28a and the convex portion row of 28b intersect is bonded, whereas in the plywood 26 of the present invention, as shown in FIG. As shown, since the entire convex row of the plano-convex single plate 26a is bonded, the bonding area is doubled or more, and stable and strong bonding is possible. Further, in the plywood 26 of the present invention, all the adhesive applied to the convex portion is effectively bonded, whereas in the conventional plywood 28, only about 40% of the applied adhesive is effectively contributed to the adhesion. Is.

図２０は、前記図１１に示した単板積層材の最下層の平凸単板２９ｃの凹凸面に、両板面が平坦面である板状体を「平凸接着」して４プライの単板積層材２９を製造する積層状態を示す。ここに両板面が平坦面である板状体とは、単板はもとより、合板、ＭＤＦ、パーティクルボードなどの木質系板状体を総称し、本実施例では単板を用いた例を示す。平凸単板２９ａ，２９ｂ，２９ｃの凸部分に塗布装置（図示せず）にて接着剤１６を塗布し、平凸単板２９ａ，２９ｂ，２９ｃと両板面が平坦面の単板２９ｄの繊維方向が互に一致する向きで、３枚の平凸単板２９ａ，２９ｂ，２９ｃをそれぞれ「平凸接着」し、さらに平凸単板２９ｃと単板２９ｄとを「平凸接着」した後、ホットプレスで接着剤１６の硬化に要する所定時間熱圧締して、単板積層材２９を製造する。かかる製造方法によって単板積層材２９の両最外層の単板２９ａ，２９ｄの外側に平坦面が表われることになる。図２１に単板積層材２９の斜視図を示す。   FIG. 20 shows a four-ply structure by “plano-bonding” a plate-like body having both flat surfaces on the uneven surface of the lowermost plano-convex single plate 29c of the single-plate laminate shown in FIG. The lamination | stacking state which manufactures the single-plate laminated material 29 is shown. Here, the plate-like body whose both plate surfaces are flat surfaces is a general term for not only a single plate but also a woody plate-like body such as plywood, MDF, particle board, etc. In this embodiment, an example using a single plate is shown. . The adhesive 16 is applied to the convex portions of the plano-convex single plates 29a, 29b, 29c by an application device (not shown), and the plano-convex single plates 29a, 29b, 29c and the single plate 29d having both flat surfaces are flat. After the plano-convex single plates 29a, 29b, and 29c are each “plano-convex bonded” and the plano-convex single plate 29c and the single plate 29d are “plano-bonded” in the directions in which the fiber directions coincide with each other Then, the single plate laminate 29 is manufactured by hot pressing for a predetermined time required for curing the adhesive 16 with a hot press. With this manufacturing method, a flat surface appears on the outer sides of the single plates 29a and 29d of the outermost layers of the single plate laminate 29. FIG. 21 shows a perspective view of the single plate laminate 29.

図２２は前記図１５に示した合板の最下層の平凸単板３０ｃに、平凸単板３０ｃとは繊維方向が異なる平凸単板３０ｄ及び両板面が平坦面である板状体としての単板３０ｅをそれぞれ「平凸接着」して５プライの合板３０を製造する積層状態を示す。板状体については、本実施例においても前記と同様に単板を用いた例とする。又２層目、４層目の平凸単板３０ｂ、３０ｄは前記同様別途製造用意する。平凸単板３０ａ，３０ｂ，３０ｃ，３０ｄの凸部分に塗布装置（図示せず）にて接着剤１６を塗布し、４枚の凹凸平坦単板３０ａ，３０ｂ，３０ｃ，３０ｄ及び両板面が平坦面である単板３０ｅの繊維方向が交互に直交する向きで、且つそれぞれの平凸単板３０ａ，３０ｂ，３０ｃ，３０ｄ及び単板３０ｅを「平凸接着」した後、ホットプレスで接着剤１６の硬化に要する所定時間熱圧締して、合板３０を製造する。かかる製造方法によって合板３０の両最外層の単板３０ａ，３０ｅの外側に平坦面が表われることになる。図２３に合板３０の斜視図を示す。   FIG. 22 shows a plano-convex single plate 30c which is the lowest layer of the plywood shown in FIG. 15, a plano-convex single plate 30d having a fiber direction different from that of the plano-convex single plate 30c, and a plate-like body having both flat surfaces. A laminated state in which a single ply 30e is manufactured by “plano-convex bonding” to produce a 5-ply plywood 30 is shown. About a plate-shaped object, it is set as the example which used the single plate similarly to the above also in a present Example. Also, the second and fourth plano-convex single plates 30b and 30d are prepared separately as described above. The adhesive 16 is applied to the convex portions of the plano-convex single plates 30a, 30b, 30c, 30d by a coating device (not shown), and the four concave-convex flat single plates 30a, 30b, 30c, 30d and both plate surfaces are The fiber directions of the single plate 30e, which is a flat surface, are alternately perpendicular to each other, and each plano-convex single plate 30a, 30b, 30c, 30d and the single plate 30e are "plano-bonded" and then hot pressed to form an adhesive. The plywood 30 is manufactured by heat-pressing for a predetermined time required for curing 16. By such a manufacturing method, a flat surface appears on the outer sides of the single plates 30a and 30e of both outermost layers of the plywood 30. FIG. 23 shows a perspective view of the plywood 30.

前記２つの実施例図２０及び図２２においては、積層板の表裏両面に平坦面が表われるよう、両板面が平坦面である単板を最外層の単板の一つに用いる例を示したが、図３４及び図３５に示す単板積層板５４又は合板５５のように、両板面が平坦面である単板５４ｃ，５５ｃを両最外層の単板５４ａ，５４ｅ又は５５ａ，５５ｅの内側に位置する単板（３プライ、５プライの積層板の場合は中心に位置する単板が望ましい）に用いて、その両平坦面の両側に平凸単板５４ｂ，５４ｄ又は５５ｂ，５５ｄを「平凸接着」し、積層板５４，５５の両最外層の単板の外側に平坦面が表われるようにしてもよい。   20 and 22 show an example in which a single plate having both flat surfaces is used as one of the outermost single plates so that flat surfaces appear on both front and back surfaces of the laminated plate. However, like the single plate laminated plate 54 or the plywood 55 shown in FIGS. 34 and 35, the single plates 54c and 55c whose both plate surfaces are flat are replaced with the single plates 54a and 54e or 55a and 55e of the outermost layers. For the single plate located on the inner side (in the case of a three-ply, five-ply laminated plate, a single plate located in the center is desirable), plano-convex single plates 54b, 54d or 55b, 55d are provided on both sides of both flat surfaces. “Flat-convex adhesion” may be used so that a flat surface appears on the outer side of both the outermost single plates of the laminated plates 54 and 55.

前記４つの実施例においては、積層板の表裏両面に平坦面が表われるよう、両板面が平坦面である単板を用いて積層接着したが、同様の目的のために、任意の２枚の平凸単板の凹凸面同士を互に向い合わせて接着し、少なくともいずれか一方の平凸単板の平坦面に別の平凸単板を「平凸接着」して、両最外層の単板の外側に平坦面が表われる積層板を製造することができる。図２４は６プライの単板積層材、図２６は５プライの合板を示す。図２４において、平凸単板３１ａ，３１ｂ，３１ｃ，３１ｅ，３１ｆの凸部分に塗布装置（図示せず）にて接着剤１６を塗布し、各平凸単板の繊維方向が互いに一致する向きで、且つ中央２枚の平凸単板３１ｃ，３１ｄのみ凹凸面を向い合わせ、それらの外側の平凸単板３１ａ，３１ｂ，３１ｅ，３１ｆをそれぞれ「平凸接着」した後、ホットプレスで接着剤１６の硬化に要する所定時間熱圧締し、単板積層材３１を製造する。図２５に単板積層材３１の斜視図を示す。
さらには、少なくとも単板積層材３１の反りやひねりに大きな影響を与える最外層に配置された平凸単板３１ａと３１ｆを、単板繊維の交走木理（繊維の配向性）をほぼ同一部位に揃えた対のベニヤ単板とすることにより、積層された積層板は乾燥あるいは接着時の熱による伸縮により発生した内部応力が中立軸を中心にほぼ対称に保たれ、繊維の配向性が通直でない曲がり材などの通常使用できない材料からも、反りやひねりのない平坦な単板積層材を作ることができる。 In the above four embodiments, the two plates are laminated and bonded using a single plate having flat surfaces so that flat surfaces appear on both front and back surfaces of the laminated plate. Adhere the concavo-convex surfaces of the plano-convex veneers facing each other and attach another plano-convex veneer to the flat surface of at least one of the plano-convex veneers. A laminated plate having a flat surface on the outside of the single plate can be produced. FIG. 24 shows a 6-ply single plate laminate, and FIG. 26 shows a 5-ply plywood. In FIG. 24, adhesive 16 is applied to the convex portions of plano-convex veneers 31a, 31b, 31c, 31e, 31f by an application device (not shown), and the fiber directions of the plano-convex veneers are aligned with each other. In addition, only the two plano-convex single plates 31c and 31d in the center face the uneven surface, and the plano-convex single plates 31a, 31b, 31e, and 31f on the outside are “plano-bonded”, and then bonded by hot press. The single plate laminated material 31 is manufactured by heat-pressing for a predetermined time required for curing the agent 16. FIG. 25 is a perspective view of the single plate laminate 31.
Furthermore, at least the plano-convex veneers 31a and 31f arranged on the outermost layer that have a great influence on the warp and twist of the veneer laminate 31 have substantially the same crossover texture (fiber orientation) of the veneer fibers. By making a pair of veneer single plates aligned with the site, the laminated laminates are kept almost symmetrical about the neutral axis due to the internal stress generated by expansion or contraction due to heat during drying or bonding, and the fiber orientation is A flat veneer laminate without warping or twisting can be made from materials that cannot be used normally, such as bending materials that are not straight.

次に、図２６は、縦横の長さの違う２種類の平凸単板を用いた５プライの合板の積層状態を示す。平凸単板３２ａ，３２ｂ，３２ｃ，３２ｅの凸部分に塗布装置（図示せず）にて接着剤１６を塗布し、各平凸単板３２ａ，３２ｂ，３２ｃ，３２ｄ，３２ｅの繊維方向が互に直交する向きで、且つ中央２枚の平凸単板３２ｃ，３２ｄのみ凹凸面を向い合わせ、それらの外側の平凸単板３２ａ，３２ｂ，３２ｅをそれぞれ「平凸接着」した後、ホットプレスで接着剤１６の硬化に要する所定時間熱圧締し、合板３２を製造する。図２７に合板３２の斜視図を示す。
また単板積層材３１と同様に、少なくとも合板３２の最外層に配置された平凸単板３２ａと３２ｅが、単板繊維の交走木理（繊維の配向性）をほぼ同一部位に揃えた対のベニヤ単板を用いることにより、積層された積層板は乾燥あるいは接着時の熱による伸縮により発生した内部応力が中立軸を中心にほぼ対称に保たれることにより、繊維の配向性が通直でない曲がり材などの通常使用できない材料からも、反りやひねりのない平坦な合板を作ることができる。
また、単板積層材２９，３１と合板３０，３２の熱圧締においては、ホットプレスのみで行ってもよいが、凹凸面によってできた空隙に熱風発生器の熱風を吹き込むことにより、より短い時間に均一で安定した接着剤の硬化を達成できる。
単板積層材２９，３１と合板３０，３２は、木材の大きな特徴である軽くて強い特性や防音、断熱性などの性能を持ちつつ、凹凸面によって内部に空隙が形成され密度の低い性能を有する。更に表裏両面が平坦な面で構成されているため、壁や床下などの面材としても有効に使うことができる。 Next, FIG. 26 shows a laminated state of a 5-ply plywood using two types of plano-convex single plates having different vertical and horizontal lengths. The adhesive 16 is applied to the convex portions of the plano-convex single plates 32a, 32b, 32c, 32e by an application device (not shown), and the fiber directions of the plano-convex single plates 32a, 32b, 32c, 32d, 32e are mutually different. In the direction perpendicular to the center, only the two plano-convex single plates 32c and 32d in the center face the concavo-convex surface, and the respective plano-convex single plates 32a, 32b and 32e are “plano-bonded”, respectively, and then hot press The plywood 32 is manufactured by hot pressing for a predetermined time required for curing the adhesive 16. FIG. 27 shows a perspective view of the plywood 32.
Similarly to the single-plate laminate 31, the plano-convex single plates 32a and 32e arranged at least in the outermost layer of the plywood 32 have the single-sheet fiber crossing wood (fiber orientation) aligned at substantially the same site. By using a pair of veneer veneers, the laminated laminates maintain the internal stress generated by the expansion and contraction caused by heat during drying or bonding, so that the orientation of the fibers can be maintained substantially symmetrically about the neutral axis. A flat plywood without warping or twisting can be made from materials that cannot be used normally, such as bending materials that are not straight.
In addition, the hot pressing of the single-plate laminates 29 and 31 and the plywoods 30 and 32 may be performed only by hot pressing, but is shorter by blowing hot air from a hot air generator into a gap formed by the uneven surface. A uniform and stable curing of the adhesive can be achieved over time.
The veneer laminates 29 and 31 and the plywoods 30 and 32 have a light and strong characteristic, which is a major feature of wood, and soundproofing, heat insulation, and the like. Have. Furthermore, since both front and back surfaces are formed of flat surfaces, they can be used effectively as face materials for walls and under floors.

実施例１においては、２台の鉋台４ａ，４ｂの位置関係をスピンドル３の回転軸を対称軸として一方の鉋台４ａを約１８０°回転移動したときに他方の鉋台４ｂにほぼ重なるような回転対称性の有る位置関係とすることにより、切削抵抗のうち原木を撓ませる方向の成分が互いに打ち消しあうため、原木を撓ませることもなく、安定した状態で切削することができ、良質な単板を得ることができる。しかし乍ら、２台の鉋台４ａ，４ｂは、設計上接触することなく配置可能であれば図２８に示すような構成にしてもかまわない。つまり、２台の鉋台４ａ，４ｃの位置関係をスピンドル３の回転軸を対称軸として一方の鉋台４ａを任意の角度θ（°）回転移動したときに他方の鉋台４ｃにほぼ重なるような回転対称性の有る位置関係としてもよい。ただし、その場合は原木を旋削するときの切削用刃物の刃先の軌道である渦巻き曲線の関係上、スピンドル３の回転軸芯の点Ｐ０から各切削用刃物５，６の刃先の点Ｐ１，Ｐ４までの距離Ｓ４，Ｓ２は、下記の式の関係を保ちながら鉋台を移送しなければならない。
Ｓ２−Ｓ４＝（１／２−θ／３６０）×ｆ
（ｆ：原木1回転当たりの各鉋台の移送量） In the first embodiment, the positional relationship between the two racks 4a and 4b is rotationally symmetric such that when one rack 4a is rotated about 180 ° with the rotation axis of the spindle 3 as the axis of symmetry, it substantially overlaps the other rack 4b. Because the components in the direction of bending the log out of the cutting resistance cancel each other out, the cutting force can be cut in a stable state without bending the log. Can be obtained. However, the two racks 4a and 4b may be configured as shown in FIG. 28 as long as they can be arranged without contact in design. In other words, the positional relationship between the two racks 4a and 4c is rotationally symmetric so that when the one rack 4a is rotated by an arbitrary angle θ (°) with the rotation axis of the spindle 3 as the axis of symmetry, it substantially overlaps the other rack 4c. It is good also as a positional relationship with nature. However, in this case, due to the spiral curve that is the trajectory of the cutting edge of the cutting tool when turning the raw wood, the point P1, P4 of the cutting edge of each cutting tool 5, 6 from the point P0 of the rotation axis of the spindle 3 The distances S4 and S2 must move the table while maintaining the relationship of the following formula.
S2-S4 = (1 / 2−θ / 360) × f
(F: Transfer amount of each stand per log rotation)

実施例１に記述した約１８０°の回転対称性の有る位置関係の場合は、スピンドル３の回転軸芯の点Ｐ０から各切削用刃物５，６の刃先の点Ｐ１，Ｐ４までの距離Ｓ１とＳ２が等しく、位置関係が単純なため初期センティングが簡易で、機械の保守において優位であるという利点があるが、図１０に示すように旋削した単板の搬送方向が反対向きのため、定尺切断装置１３などの後処理を行う機械の設置面積が大きくなってしまう難点がある。それに対して図２８に示すように回転角度θ（°）の範囲を０＜θ＜１１０とした回転対称性の有る位置関係としたときは、単板の搬送方向が同方向に設置することができるため、図２９，図３０に示すような構成も可能となる。
図２９について詳述すると、スピンドル３の回転軸を対称軸として一方の鉋台４ａを９０°回転移動したときに他方の鉋台４ｃにほぼ重なるような回転対称性の有る位置関係に配置した２台の鉋台４ａと４ｃに、凹凸状刃物６と直線状刃物５を固定して原木１を旋削し、平凸帯状単板２ａ,２ｃを同方向に向けて搬送し、回転刃１１とアンビルロール１２から成る定尺切断装置３２ａ，３２ｂによって単板の繊維と直交する方向の長さが所望の長さＬ８となるよう定尺切断し、複数枚の平凸単板３３ａ，３３ｂを製造する。 In the case of the positional relationship having rotational symmetry of about 180 ° described in the first embodiment, the distance S1 from the point P0 of the rotation axis of the spindle 3 to the point P1, P4 of the cutting edge of each cutting tool 5, 6 Since S2 is equal and the positional relationship is simple, initial centration is easy and it is advantageous in machine maintenance. However, as shown in FIG. There is a difficulty that the installation area of a machine for performing post-processing such as the scale cutting device 13 becomes large. On the other hand, as shown in FIG. 28, when the rotational angle θ (°) is in the rotationally symmetrical positional relationship where 0 <θ <110, the conveyance direction of the single plate may be set in the same direction. Therefore, the configuration shown in FIGS. 29 and 30 is also possible.
29, the rotation axis of the spindle 3 is used as the axis of symmetry, and two of the two units arranged in a rotationally symmetrical positional relationship so as to substantially overlap the other unit 4c when the one unit 4a is rotated 90 °. The uneven cutter 6 and the linear cutter 5 are fixed to the gantry 4a and 4c, the raw wood 1 is turned, and the plano-convex strips 2a and 2c are conveyed in the same direction, from the rotary blade 11 and the anvil roll 12 The fixed length cutting devices 32a and 32b are used to cut the length in the direction perpendicular to the fibers of the single plate to a desired length L8 to produce a plurality of plano-convex single plates 33a and 33b.

上記構成において、定尺切断装置３２ｂの切断開始のタイミングを定尺切断装置３２ａより凹凸状刃物６の刃先から各定尺切断装置の切断位置までの距離の差Ｌ１１だけ遅らすことにより、切断された平凸単板３３ａ，３３ｂは、実施例３に記述した単板繊維の交走木理（繊維の配向性）をほぼ同一部位に揃えた対の単板とすることができる。距離の差Ｌ１１は、定尺切断装置３２ａ切断開始時の凹凸状刃物６の刃先から定尺切断装置３２ｂの切断位置までの距離（２π×Ｓ２×θ／３６０）＋Ｌ１０と、凹凸状切削用刃物６の刃先から定尺切断装置３２ａの切断位置までの距離Ｌ９の差分であるので、距離の差Ｌ１１＝（２π×Ｓ２×θ／３６０）＋Ｌ１０−Ｌ９となる。   In the above configuration, the cutting is started by delaying the cutting start timing of the regular cutting device 32b by the distance difference L11 from the cutting edge of the uneven cutting tool 6 to the cutting position of each regular cutting device from the regular cutting device 32a. The plano-convex veneers 33a and 33b can be a pair of veneers in which the crossing texture (fiber orientation) of the veneer fibers described in the third embodiment is aligned at almost the same site. The distance difference L11 is the distance (2π × S2 × θ / 360) + L10 from the cutting edge of the uneven cutting tool 6 to the cutting position of the fixed cutting device 32b at the start of cutting of the fixed cutting device 32a, and the uneven cutting blade. Since this is the difference in the distance L9 from the cutting edge of 6 to the cutting position of the regular cutting device 32a, the difference in distance L11 = (2π × S2 × θ / 360) + L10−L9.

また、図３０のように旋削し、原木１から旋削された平凸帯状単板２ａ,２ｃを同方向に向けて搬送し、重ね合わせた後に、定尺切断装置３４によって所望の長さＬ８となるよう定尺切断し、複数枚の平凸単板３５ａ，３５ｂを製造するという構成でもよい。この場合でも、凹凸状刃物６の刃先から定尺切断装置３４の切断位置までの距離Ｌ１２（単板２ａの搬送経路）と、凹凸状刃物６の刃先から定尺切断装置３４の切断位置までの距離（２π×Ｓ２×θ／３６０）＋Ｌ１３（単板２ｃの搬送経路）とが、ほぼ等しくなるように重ね合わせた後、定尺切断することにより、平凸単板３５ａ，３５ｂは実施例３に記述した単板繊維の交走木理（繊維の配向性）をほぼ同一部位に揃えた対のベニヤ単板とすることができる。
以上のような構成をとることにより、単板繊維の交走木理（繊維の配向性）をほぼ同一部位に揃えた対の平凸単板を容易に取得することができ、現在使用されることなく原木の伐採地に放置されている低質原木からも十分に、高い歩留まりで、反りやひねりの無い、木材の性質を生かしつつも軽量化された合板や単板積層材の製造が効率的に行うことが可能となった。 Further, the plano-convex strip-like single plates 2a and 2c, which are turned as shown in FIG. 30, are transported in the same direction in the same direction and are overlapped. A configuration may be employed in which a plurality of plano-convex veneers 35a and 35b are manufactured by cutting in a regular manner. Even in this case, the distance L12 (conveying path of the single plate 2a) from the cutting edge of the uneven cutting tool 6 to the cutting position of the regular cutting device 34 and the cutting edge of the uneven cutting tool 6 to the cutting position of the fixed cutting device 34 The plano-convex single plates 35a and 35b are formed in the third embodiment by superimposing the distance (2π × S2 × θ / 360) + L13 (conveyance path of the single plate 2c) so as to be substantially equal, and then cutting them in a fixed size. A pair of veneer single plates in which the crossed wood (fiber orientation) of the single plate fibers described in (1) is aligned at almost the same site can be obtained.
By adopting the above configuration, it is possible to easily obtain a pair of plano-convex veneers in which the veneering wood (fiber orientation) of the single veneer fibers is aligned at almost the same site and is currently used. Efficiently manufactures plywood and veneer laminates that are light enough to make use of the properties of wood, with high yield, without warping and twisting, even from low-quality logs that are left uncut in the logging area It became possible to do.

次に実施例の変更例を説明する。
１．実施例１のベニヤレースでは駆動用モータ９の駆動力で、原木１の回転駆動と駆動伝達装置８ａ，８ｂを介して２台の鉋台４ａ，４ｂの移送駆動を行う構成をとったが、駆動伝達装置８ａ，８ｂの代わりにそれぞれに駆動用モータを取り付ける構成であっても良い。
詳述すると、図３１に概略説明図を示すように、インバータ制御されたインダクションモータ等のスピンドル駆動用モータ３６によって、原木１はスピンドル３と共に回転駆動され、エンコーダ等の回転位置検出器３７によってスピンドル３の回転が検出される。２台の鉋台４ａ，４ｂは、それぞれサーボモータ等の鉋台移送モータ３８ａ，３８ｂによって移送駆動され、エンコーダ等の位置検出器３９ａ，３９ｂによって位置検出される。制御器４０は、回転位置検出器３７によって検出されたスピンドル３の回転信号と位置検出器３９ａ，３９ｂによって検出された２台の鉋台４ａ，４ｂの位置信号を入力し、２台の鉋台４ａ，４ｂが予め設定された移送量ｆでスピンドル３へ向け移送する位置を演算し、鉋台移送モータ３８ａ，３８ｂを制御する。 Next, a modified example of the embodiment will be described.
1. In the veneer race according to the first embodiment, the driving force of the driving motor 9 is used to rotate the log 1 and transfer the two racks 4a and 4b via the drive transmission devices 8a and 8b. Instead of the transmission devices 8a and 8b, a configuration in which a driving motor is attached to each of them may be used.
More specifically, as shown in a schematic explanatory diagram in FIG. 31, the log 1 is rotationally driven together with the spindle 3 by a spindle driving motor 36 such as an inverter motor controlled by an inverter, and the spindle is rotated by a rotational position detector 37 such as an encoder. 3 rotations are detected. The two racks 4a and 4b are driven to be moved by rack transfer motors 38a and 38b such as servo motors, and their positions are detected by position detectors 39a and 39b such as encoders. The controller 40 inputs the rotation signal of the spindle 3 detected by the rotational position detector 37 and the position signals of the two racks 4a and 4b detected by the position detectors 39a and 39b, and inputs the two racks 4a and 4b. The position at which 4b is transferred toward the spindle 3 by a preset transfer amount f is calculated, and the table transport motors 38a and 38b are controlled.

２．実施例１のベニヤレースではスピンドル３により原木１の回転駆動をしているが、原木の中心部分の強度が低い（腐って穴があいている原木など）材種では、図３２に示すように、インダクションモータなどの突刺ロール駆動モータ４２ａ，４２ｂで回転駆動される突刺回転駆動ロール４１ａ，４１ｂで、各切削用刃物５，６の刃先直前の原木１の外周部を回転駆動する構成をとってもよい。突刺回転駆動ロール４１ａ，４１ｂは、各切削用刃物５，６の刃先線とほぼ平行に備えられ、周囲に多数の突刺体を有する突刺駆動部材を軸中心線方向に間隔を於いて多数配置して構成されている。また、切削時に問題となる裏割れの軽減を目的として、多数の突刺駆動部材の間隔に、原木１の外周部を加圧する分割状のプレッシャー部材４３ａ，４３ｂを配置してもよい。
また、突刺回転駆動ロール４１ａ，４１ｂからのトルクで十分である原木（切削抵抗が小さいか或いは、直径が小さい場合など）のときは、スピンドル３からの回転駆動力は必要なく、回転自在で原木の重量分のみを支える構成であってもよい。その場合、スピンドル３の代わりに、原木１の下面に沿いながら原木１の重量分を下側から保持する回転自在の保持ロール５３を使った構成でもよい。 2. In the veneer race according to the first embodiment, the log 1 is driven to rotate by the spindle 3. However, in the case of a material whose strength of the center part of the log is low (for example, a log with rotten holes), as shown in FIG. Further, a configuration may be adopted in which the outer peripheral portion of the raw wood 1 immediately before the cutting edge of each cutting tool 5, 6 is rotationally driven by piercing rotation driving rolls 41 a, 41 b that are rotationally driven by piercing roll driving motors 42 a, 42 b such as induction motors. . The piercing rotation driving rolls 41a and 41b are provided substantially parallel to the cutting edge lines of the cutting blades 5 and 6, and a large number of piercing driving members having a large number of piercing bodies are arranged at intervals in the axial center line direction. Configured. In addition, for the purpose of reducing back cracks that cause problems during cutting, divided pressure members 43a and 43b that pressurize the outer peripheral portion of the log 1 may be arranged at intervals between a number of piercing drive members.
In addition, when the log is sufficient with the torque from the piercing rotation drive rolls 41a and 41b (when the cutting resistance is small or the diameter is small, etc.), the rotation drive force from the spindle 3 is not necessary and the log can be rotated freely. It may be configured to support only the weight. In that case, instead of the spindle 3, a configuration using a rotatable holding roll 53 that holds the weight of the raw wood 1 from the lower side while being along the lower surface of the raw wood 1 may be used.

３．図３３に示すように、スピンドル３に代わって原木１の下面に沿いながら原木１の重量分を下側から保持する回転自在の保持ロール５３と、インダクションモータなどのプレッシャーロール駆動モータ４５ａ，４５ｂで回転駆動され、各切削用刃物５，６の刃先直前の原木１と単板との境界付近の原木１の表面を加圧しながら回転駆動力を与えるプレッシャーロール４４ａ，４４ｂを具備する構成であってもよい。   3. As shown in FIG. 33, instead of the spindle 3, a rotatable holding roll 53 that holds the weight of the raw wood 1 from the lower side while being along the lower surface of the raw wood 1, and pressure roll drive motors 45a and 45b such as induction motors. It is configured to include pressure rolls 44a and 44b that are rotationally driven and apply a rotational driving force while pressing the surface of the raw wood 1 in the vicinity of the boundary between the raw wood 1 and the veneer just before the cutting edges of the cutting blades 5 and 6. Also good.

４．２台の鉋台４ａ，４ｂ又は４ａ，４ｃの移送機構はモータ駆動によるネジの位置制御としたが、油圧シリンダをサーボ弁などで制御する方式でもよい。要は、必要な駆動力で鉋台を位置制御できる機構であれば良い。   4. The transfer mechanism of the two racks 4a, 4b or 4a, 4c is a screw-position control by a motor drive, but a system in which a hydraulic cylinder is controlled by a servo valve or the like may be used. In short, any mechanism that can control the position of the table with a necessary driving force may be used.

５．実施例１のベニヤレースでは、削成される平凸帯状単板２ａ、２ｂの単板厚は同じ場合を説明したが、異なる単板厚の平凸帯状単板も切削することができる。図７を用いて詳述すると、移送単板厚Ｔ１の平凸帯状単板２ａ、移送単板厚Ｔ２の平凸帯状単板２ｂを削成するためには下記の式の関係を保ちながら各鉋台を移送量ｆ（ｆ＝Ｔ１＋Ｔ２であることは前記実施例と同様）で移送すればよい。
Ｓ２−Ｓ１＝（Ｔ２−Ｔ１）／２
また図２８のように、２台の鉋台４ａ、４ｃの位置関係をスピンドル３の回転軸を対称軸として一方の鉋台４ａを任意の角度θ（°）回転移動したときに他方の鉋台４ｃにほぼ重なるような回転対称性の有る位置関係とした場合は、下記の式の関係を保ちながら各鉋台を移送量ｆで移送すればよい。
Ｓ２−Ｓ４＝Ｔ２−（Ｔ１＋Ｔ２）×θ／３６０
更に、複数枚の平凸単板を積層接着して積層板を製造するにあたり、単板厚の異なる平凸単板を選択して使用することができる。むしろ中心部を構成する平凸単板は比較的脆弱な単板を使用することが多く、この場合単板厚は大となり、一方、最外層の平凸単板は木目の美しい良質な単板を使用することが多く、この場合単板厚は小となることが一般的である。故に前記各積層板の実施例において構成する各平凸単板及び板状体の厚みは適宜自由に選択することができる。 5. In the veneer race of the first embodiment, the case where the single plate thicknesses of the flat and convex strip-shaped single plates 2a and 2b to be machined are the same is described, but plano-convex strip single plates having different single plate thicknesses can also be cut. Describing in detail with reference to FIG. 7, in order to cut the plano-convex strip-shaped single plate 2a having the transfer single plate thickness T1 and the plano-convex strip-shaped single plate 2b having the transport single-plate thickness T2, each of the following formulas is maintained. What is necessary is just to transfer a table with the transfer amount f (It is the same as the said Example that it is f = T1 + T2.).
S2-S1 = (T2-T1) / 2
As shown in FIG. 28, the positional relationship between the two racks 4a and 4c is substantially the same as that of the other rack 4c when one rack 4a is rotated by an arbitrary angle θ (°) with the rotation axis of the spindle 3 as the axis of symmetry. In the case of a positional relationship with overlapping rotational symmetry, it is only necessary to transfer each rack with the transfer amount f while maintaining the relationship of the following formula.
S2-S4 = T2- (T1 + T2) × θ / 360
Furthermore, when producing a laminate by laminating and bonding a plurality of plano-convex single plates, plano-convex single plates having different single plate thicknesses can be selected and used. Rather, the plano-convex veneer that forms the center often uses a relatively fragile veneer, in which case the veneer thickness is large, while the outermost plano-convex veneer is a good quality veneer with a beautiful grain. In this case, the single plate thickness is generally small. Therefore, the thickness of each plano-convex single plate and the plate-like body constituting in the embodiment of each laminated plate can be selected as appropriate.

６．凹凸状刃物６は、図６により凸刃部６ｂと凹刃部６ｃと傾斜刃部６ｄによって構成されているとしたが、凸刃部６ｂと凹刃部６ｃのみの構成であってもよい。また、刃物基材から加工して形成された刃物としているが、替刃式の刃物であってもよく、要は刃物の厚み方向に凹凸状に形成された凹刃と凸刃とを刃物の長手方向に交互に配置し且つ各凹刃と凸刃の刃先が前記長手方向に凹凸状に形成される刃物であればよい。   6). Although the concavo-convex cutter 6 is constituted by the convex blade portion 6b, the concave blade portion 6c, and the inclined blade portion 6d in FIG. 6, it may be configured by only the convex blade portion 6b and the concave blade portion 6c. Moreover, although it is set as the blade formed by processing from a blade base material, a replaceable blade type blade may be used. In short, a concave blade and a convex blade formed in an uneven shape in the thickness direction of the blade are used. Any blade may be used as long as it is alternately arranged in the longitudinal direction and the cutting edges of the concave blades and the convex blades are formed in an uneven shape in the longitudinal direction.

７．単板積層材または合板の接着において接着剤１６は、耐水性、耐候性の面からみて尿素樹脂、メラミン樹脂、フェノール樹脂等の熱硬化性接着剤が好ましいが、使用用途に応じて適切なもの（水性高分子−イソシアネート系、レゾシノール系、酢酸ビニル樹脂系など）を選択しても構わない。
7). The adhesive 16 is preferably a thermosetting adhesive such as urea resin, melamine resin, phenol resin, etc. from the viewpoint of water resistance and weather resistance, but suitable for the intended use. (Aqueous polymer-isocyanate series, resorcinol series, vinyl acetate resin series, etc.) may be selected.

１：原木
２ａ,２ｂ：平坦・凹凸面帯状ベニヤ単板
３：スピンドル
４ａ，４ｂ：２台の鉋台
５：直線状切削用刃物
６：凹凸状切削用刃物
７ａ，７ｂ：送りネジ
８ａ，８ｂ：駆動伝達装置
９：駆動用モータ
１０：移送機構
１１：定尺切断装置
１２：アンビルロール
１３：定尺切断装置
１４：平坦・凹凸面ベニヤ単板
１５：３プライの単板積層材
１６：接着剤
１７：空隙
１８：ホットプレス
１９：熱風発生器
２０：熱風
２５：平坦・凹凸面ベニヤ単板の「あて材」
２６：平坦・凹凸面ベニヤ単板１４からなる３プライの合板
２７：空隙
２８：３プライの平坦・凹凸面ベニヤ単板の繊維方向を互いに直交する方向で積層接着した合板
２９：３枚の平坦・凹凸面ベニヤ単板１４と1枚の両板面が平坦面であるベニヤ単板を積層した単板積層材 1: Log 2a, 2b: Flat / uneven surface strip veneer veneer 3: Spindles 4a, 4b: Two racks 5: Straight cutting tools 6: Uneven cutting tools 7a, 7b: Feed screws 8a, 8b: Drive transmission device 9: Driving motor 10: Transfer mechanism 11: Fixed cutting device 12: Anvil roll 13: Fixed cutting device 14: Flat / uneven surface veneer single plate 15: Three-ply single plate laminate 16: Adhesive 17: Air gap 18: Hot press 19: Hot air generator 20: Hot air 25: Flat and uneven surface veneer veneer single plate
26: Three-ply plywood made of flat / concave surface veneer single plate 14: Air gap 28: Plywood 29: Three flat plates laminated and bonded in directions perpendicular to each other in the fiber direction of the three-ply flat / concave surface veneer single plate -Single plate laminated material in which concave and convex surface veneer single plate 14 and one veneer single plate whose both plate surfaces are flat are laminated.

Claims (13)

少なくとも、削成される原木の回転軸方向へ移送機構によって移送される２つの鉋台と、それぞれの鉋台に取付けられた切削用刃物とからなり、前記移送機構を、２つの切削用刃物により各別に削成するベニヤ単板の単板厚の合計の距離移送させることによって、２つの切削用刃物により同一又は異なる単板厚の帯状のベニヤ単板を同時に削成するベニヤレースであって、
前記切削用刃物の一つを刃先が長手方向に直線状に形成される直線状切削用刃物に、もう一つを、刃物の厚み方向に凹凸状に形成された凹刃と凸刃とを刃物の長手方向に交互に配置し且つ各凹刃と凸刃の刃先が前記長手方向に凹凸状に形成される凹凸状切削用刃物とし、更に当該凹凸状刃先の起伏幅が凹刃、凸刃とも同一で且つ両起伏幅の合計が前記各別に削成するベニヤ単板の単板厚の合計よりも小さいことを特徴とするベニヤレース。 It comprises at least two racks that are transported by a transport mechanism in the direction of the rotation axis of the raw wood to be cut, and cutting tools attached to the respective racks, and each of the transport mechanisms is separated by two cutting blades. A veneer lace that simultaneously cuts strip-like veneer single plates of the same or different single plate thickness by two cutting blades by transferring the total distance of the single plate thickness of the veneer single plate to be cut,
One of the cutting blades is a linear cutting blade whose cutting edge is formed linearly in the longitudinal direction, and the other is a concave blade and a convex blade which are formed uneven in the thickness direction of the cutting tool. The concave and convex cutting edges are arranged alternately in the longitudinal direction and the concave and convex cutting edges are formed in a concave and convex shape in the longitudinal direction, and the undulating width of the concave and convex cutting edges is both concave and convex. A veneer lace characterized by the same and the sum of both undulation widths being smaller than the total veneer thickness of the veneer veneer cut separately . 前記請求項１記載のベニヤレースを用いて、削成される原木から、一方の板面が平坦面、他方の板面は削成方向に複数本の凹凸部が延びた凹凸面である帯状のベニヤ単板を製造する平坦・凹凸面帯状ベニヤ単板の製造方法。   Using the veneer lace according to claim 1, from the raw wood to be cut, one plate surface is a flat surface, and the other plate surface is a band-like surface having a plurality of uneven portions extending in the cutting direction. A method for producing a flat / uneven surface veneer veneer that produces a veneer veneer. 前記請求項２記載の帯状ベニヤ単板の製造方法によって製造された帯状ベニヤ単板を所定長さに切断して、一方の板面が平坦面、他方の板面は凹凸面であるベニヤ単板を製造する平坦・凹凸面ベニヤ単板の製造方法。 3. A veneer veneer obtained by cutting a belt veneer veneer produced by the method for producing a veneer veneer according to claim 2 into a predetermined length, wherein one plate surface is a flat surface and the other plate surface is an uneven surface. A method for producing a flat / uneven surface veneer veneer. 前記請求項３記載の平坦・凹凸面ベニヤ単板の製造方法によって製造された平坦・凹凸面ベニヤ単板。   A flat / uneven surface veneer veneer produced by the method for producing a flat / uneven surface veneer veneer according to claim 3. 前記請求項４記載の平坦・凹凸面ベニヤ単板を複数枚用いて積層板を製造するにあたり、積層板を構成する少なくとも２枚の平坦・凹凸面ベニヤ単板を、一方のベニヤ単板の平坦面と他方のベニヤ単板の凹凸面とを互に向い合わせて接着することを特徴とする積層板の製造方法。   In manufacturing a laminated board using a plurality of flat / concave surface veneer single plates according to claim 4, at least two flat / concave surface veneer single plates constituting the laminated plate are flattened with one veneer single plate. A method for producing a laminated board, characterized in that the surface and the uneven surface of the other veneer veneer face each other and are bonded together. 前記請求項５記載の積層板の製造方法において、接着する任意の１枚の平坦・凹凸面ベニヤ単板の凹凸面に、両板面が平坦面である板状体のいずれかの平坦面を接着することによって、積層板の表裏両面に平坦面が表われるよう複数のベニヤ単板を積層接着したことを特徴とする積層板の製造方法。   6. The method for manufacturing a laminated board according to claim 5, wherein any flat surface of the plate-like body having both flat surfaces is formed on the uneven surface of any one flat / uneven surface veneer single plate to be bonded. A method for manufacturing a laminated board, comprising: laminating and bonding a plurality of veneer single boards so that a flat surface appears on both front and back surfaces of the laminated board by bonding. 前記請求項５記載の積層板の製造方法において、接着する任意の２枚の平坦・凹凸面ベニヤ単板を、一方のベニヤ単板の凹凸面と他方のベニヤ単板の凹凸面とを互に向い合わせて接着することによって、積層板の表裏両面に平坦面が表われるよう複数の平坦・凹凸面ベニヤ単板を積層接着したことを特徴とする積層板の製造方法。   6. The method for manufacturing a laminated board according to claim 5, wherein any two flat / uneven surface veneer single plates to be bonded are formed such that the uneven surface of one veneer single plate and the uneven surface of the other veneer single plate are interchanged. A method of manufacturing a laminated board, comprising: laminating and bonding a plurality of flat / concave surface veneer single sheets so that a flat surface appears on both front and back surfaces of the laminated board by facing and bonding. 前記請求項６又は請求項７記載の積層板の製造方法において、少なくとも接着する任意の２枚の平坦・凹凸面ベニヤ単板の繊維方向を互に同一にして接着する積層板の製造方法。 In the above method according to claim 6 or claim 7 laminate according method for manufacturing a laminate to adhere to the each other the same fiber direction of any two flat-concave-convex surface veneer to at least adhere. 前記請求項８記載の積層板の製造方法によって製造された積層板。 Laminated board manufactured by the manufacturing method of the laminated board of claim 8 wherein. 前記請求項９記載の積層板において、積層板を構成する両最外層のベニヤ単板が交走木理をほぼ同一部位に揃えた対のベニヤ単板であることを特徴とする積層板。 Wherein in the laminated board according to claim 9, wherein, laminate veneer of both outermost layers constituting the laminate, characterized in that a veneer of pairs of aligned交走wood grain substantially the same site. 前記請求項６又は請求項７記載の積層板の製造方法において、少なくとも接着する任意の２枚の平坦・凹凸面ベニヤ単板の繊維方向を互に直交させて接着する積層板の製造方法。 The according to claim 6 or claim 7 method for producing a laminate according method for producing a laminate adhered by mutually perpendicular fiber directions of any two flat-concave-convex surface veneer to at least adhere. 前記請求項１１記載の積層板の製造方法によって製造された積層板。 Laminated board manufactured by the manufacturing method of the laminated board of claim 11, wherein. 前記請求項１２記載の積層板において、積層板を構成する両最外層のベニヤ単板が交走木理をほぼ同一部位に揃えた対のベニヤ単板であることを特徴とする積層板。 In the above laminate of claim 12 wherein, laminate veneer of both outermost layers constituting the laminate, characterized in that a veneer of pairs of aligned交走wood grain substantially the same site.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN110640850A (en) * 2019-09-30 2020-01-03 广州市众益装饰材料有限公司 Preparation process and application of rubber wood front core

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JP2777600B2 (en) * 1989-01-13 1998-07-16 株式会社名南製作所 Manufacturing method of plywood with less distortion
JP2709498B2 (en) * 1989-02-22 1998-02-04 株式会社名南製作所 Veneer lace
JP2829144B2 (en) * 1990-03-16 1998-11-25 株式会社名南製作所 Plywood manufacturing method
JPH07205118A (en) * 1994-01-21 1995-08-08 Okura Ind Co Ltd Manufacture of hollow woody laminate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608211A (en) * 2015-02-06 2015-05-13 寿光市鲁丽木业有限公司 Plywood with super-thick core layer and preparation process thereof
CN104608211B (en) * 2015-02-06 2016-04-06 寿光市鲁丽木业股份有限公司 A kind of glued board of sandwich layer super thick and preparation technology thereof
CN110640850A (en) * 2019-09-30 2020-01-03 广州市众益装饰材料有限公司 Preparation process and application of rubber wood front core

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