JP2008100429A - Method for joining woody plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for joining woody plates which is suitable for producing a large-sized woody plate by joining the end surfaces of the woody plates together. <P>SOLUTION: A male joint made of a protrusion having an approximately lateral V-shaped cross section is formed by a process for cutting one marginal portion on the upper surface side in which, with the upper surface of one woody plate 1a made a cutting ruler surface, one marginal portion is cut diagonally at an angle α1 and a process for cutting one marginal portion on the lower surface side in which, with the lower surface made the cutting ruler surface, one marginal portion is cut diagonally at an angle α2. A female joint made of a groove having an approximately lateral V-shaped cross section is formed in the end surface on the other side of the other woody plate by cutting by a process for incising the other marginal portion on the upper surface side in which, with the upper surface of the other woody plate made the cutting ruler surface, an incision is formed by cutting the other marginal portion on the upper surface side diagonally at the angle α1 to its inside and a process for incising the other marginal portion on the lower surface side in which, with the lower surface of the other woody plate made the cutting ruler surface, an incision is formed by cutting the other marginal portion on the lower surface side diagonally at the angle α2 to its inside. In this way, the male joint and the female joint are joined together to be integrated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention particularly relates to a method for joining wooden boards suitable for producing large wooden boards such as large plates and long plates by joining the end faces of the wooden boards.

  Conventionally, as a joining structure of wood boards such as plywood and LVL, as shown in FIG. 2 (g) of Patent Document 1 and FIG. Those that join are well known.

  And the joint end surface of such a male and female of a substantially horizontal V-shaped cross section is cut using a cutting tool such as a saw or a cutter positioned with either one of the upper and lower surfaces of the wooden board as a cutting ruler surface. Is formed.

  However, when the joint end surfaces of the wood boards having such male and female joint end surfaces are to be joined and integrated with each other through an adhesive, the joint end surface has one of the upper and lower surfaces as a cutting ruler surface. Since cutting is performed using a positioned saw, cutter, or the like, as shown in FIG. 4 and FIG. 5, there may be a step e due to variations in the thickness of the wooden board on the other surface.

  Such a step e is formed by joining the end faces of a plurality of wooden boards, in particular, a large-sized plate or a long-sized joined wooden board that can be used for, for example, a truck bed or a landing board. The surface of a large wooden board such as a large plate that has been joined must be ground with great effort. In some cases, problems such as unavoidable occurred.

Japanese Patent Laid-Open No. 10-95002 Shokai 54-74771

  The present invention has been made in view of such a conventional problem, and even if there is some variation in the thickness of the wood boards to be joined, the size of the step e generated at the joined portion can be halved and the appearance can be reduced. An object of the present invention is to provide a method for joining wooden boards which is good in strength and yield.

  In order to achieve the above object, the wood board joining method of the invention of claim 1 of the present invention uses the upper surface of one of the wood boards as a cutting ruler surface and the one side edge of the upper surface side from the center of the one side end face. One side edge cutting step of cutting and cutting obliquely at an inclination angle α1 so as to pass through the center predetermined position P1 closer to the upper surface side, and using the lower surface of one wooden board as a cutting ruler surface, the lower surface A side edge cutting step on the lower surface side that cuts and cuts obliquely at an inclination angle α2 so as to pass through the center predetermined position P2 closer to the lower surface side from the center of the one side end surface, A male joint composed of a protrusion having a substantially horizontal V-shaped cross section with P1-P2 as a bottom surface is formed on one side end face of the one wooden board, and the upper surface of the other wooden board is used as a cutting ruler surface. The other side edge of the side is at least from the center of the inside to the center predetermined position Q1 closer to the upper surface side. The other side edge part cutting process of the upper surface side to cut and incline at an inclination angle α1, and the lower surface side of the other wooden board as the cutting ruler surface, the other side edge part of the lower surface side from the center of the inside The other side end face of the other wooden board by cutting in the other side edge part cutting step of cutting the lower side of the lower side to cut at an inclination angle α2 so as to reach at least the center predetermined position Q2 near the lower side A female joint formed of a groove having a substantially horizontal V-shaped cross section is formed, and then a male joint formed on one end face of the one wooden board and a female joint formed on the other end face of the other wooden board It is characterized by joining and integrating the part.

  The method for joining wood boards according to claim 2 is the method according to claim 1, wherein the vertical distance from the upper surface of one of the wood boards to the center predetermined position P1 closer to the upper surface and the lower face of the one wood board. The vertical distance from the lower side to the center predetermined position P2 near the lower surface side is equal, the vertical distance from the upper surface of the other wooden board to the central predetermined position Q1 closer to the upper surface side, and the lower surface of the other wooden board closer to the lower surface side The vertical distance to the center predetermined position Q2 is equal.

  According to a third aspect of the present invention, there is provided a method for joining wooden boards according to the first or second aspect of the invention, wherein the bottom surface of the protrusion having a substantially horizontal V-shaped cross section of the male joint portion and the substantially horizontal V shape of the cross section of the female joint portion. It joins and integrates so that a gap | interval may be formed between the bottom parts of a shape-like groove | channel.

  According to the wood board joining method of the first aspect of the invention, since the joint part of the male and female having a substantially V-shaped cross section is joined, the joining width is made wider than that of the finger joint type joining which is usually used. The strength of the joint can be increased.

  In addition, the joint portion of the male and female having a substantially horizontal V-shaped cross section is cut with a side edge portion on one surface side obliquely, for example, from the top to the bottom with one of the upper and lower surfaces being a cutting ruler surface, or with a diagonal cut. In addition, the upper and lower surfaces are formed as a cutting ruler surface, for example, by forming the other surface as a cutting ruler surface and cutting the side edge on the other surface side, for example, by cutting from bottom to top or by cutting diagonally. Therefore, even if the thickness of the wooden boards to be joined is slightly different, the thickness variation is distributed at the center position between the upper and lower surfaces of each wooden board, so that the step e generated on the upper or lower surface can be halved. it can. For this reason, the steps are not conspicuous, the appearance is good, and it is not necessary to grind the step e with much labor, and even if it is ground, the labor can be halved.

  Furthermore, since the shape of the male joint portion having a substantially horizontal V-shaped cross section is formed so that the bottom surface is formed, the fitting can be surely and easily performed without the bottom portions of the male and male joint portions colliding with each other.

  According to the wood board joining method of the second aspect of the invention, in the first aspect of the invention, the male and female joints can be formed at positions where the vertical distances from the upper and lower surfaces are equal. Can be done.

  According to the wood board joining method of the invention of claim 3, since it can be joined and integrated so that a gap is formed between the bottom surface of the male joint portion and the bottom portion of the female joint portion, Compared with the case of joining with a horizontal V-shaped joint, the yield can be improved by the size of the gap.

  Embodiments of the present invention will be described below with reference to FIGS. The present invention is not limited to the description of the present embodiment.

  FIGS. 1A to 1C show a method of forming a male joint portion 2 formed of a substantially horizontal V-shaped protrusion having a bottom surface 2a on one end face of one wood board 1a. 2 (a) to 2 (c) show a method of forming the female joint portion 3 formed of a groove having a substantially horizontal V-shaped cross section having a bottom surface 3a on the other side end face of the other wooden board 1b. FIG. 3 also shows a structure in which a male joint 2 formed on one end face of one wooden board 1a and a female joint 3 formed on the other end face of the other wooden board 1b are fitted and bonded to each other. A state where 1b is joined and integrated is shown.

  As shown in FIG. 1A, reference numerals 4 and 5 denote apparatuses for setting the upper surface of one of the wooden boards 1a as a cutting ruler surface. Reference numeral 4 denotes an upper surface position fixing tool for fixing the upper surface position of the wood board 1a, and includes a roll body, a plate body, a block body, and the like. Reference numeral 5 denotes a push-up tool for pushing up and fixing the lower surface of the wooden board 1a and pressing the upper surface thereof against the upper surface position fixing tool 4, and is composed of a roll body, a plate body, a block body, and the like that can be raised and lowered. Reference numeral 6 denotes a cutting tool such as a saw set so as to cut one side edge portion on the upper surface side of the wood board 1a obliquely at a predetermined angle α1 with the upper surface as a cutting ruler surface.

  As shown in FIG. 1A, the position of the wooden board 1a is fixed by first pushing up the lower surface of the wooden board 1a with the lifting tool 5 and pressing the upper surface of the wooden board 1a against the upper surface position fixing tool 4. Next, with the upper surface of this one wood board 1a as the cutting ruler surface, one side edge portion of the upper surface side passes through a predetermined position P1 where the vertical distance from the upper surface is p from the center of the one side end surface to the upper surface side. In this way, the cutting tool 6 such as a saw is cut obliquely at an inclination angle α1 and cut.

  From FIG. 1 (b), 4 'and 5' are apparatuses for setting the lower surface of one of the wood boards 1a as a cutting ruler surface. Reference numeral 4 'denotes a lower surface position fixing tool for fixing the lower surface position of the wood board 1a, which includes a roll body, a plate body, a block body, and the like. Reference numeral 5 'denotes a pressing tool for pressing and fixing the upper surface of the wooden board 1a and pressing and fixing the lower surface of the wooden board 1a to the lower surface position fixing tool 4'. Become. 6 'is a cutting tool such as a saw set so as to cut one side edge portion of the lower side of the wood board 1a obliquely upward at a predetermined angle with the lower surface as a cutting ruler surface.

  As shown in FIG. 1B, the position of the wooden board 1a is fixed by first pressing the upper surface of the wooden board 1a with the pressing tool 5 'and pressing the lower surface against the lower surface position fixing tool 4'. Next, the lower surface of the one wood board 1a is used as a cutting ruler surface, and one side edge of the lower surface side passes through a predetermined position P2 where the vertical distance from the lower surface is p near the lower surface side from the center of the one side end surface. In this manner, the cutting tool 6 'such as a saw is cut obliquely at an inclination angle α2 and cut. Here, the inclination angles α1 and α2 of the saws 6 and 6 'are set to α1 = α2 in an inverted relationship with respect to the horizontal center line of the wood board 1a.

  In this way, one side edge of the upper and lower surfaces of one wood board 1a is cut and cut obliquely as shown in FIG. 1 (a) and FIG. 1 (b), respectively. As shown in (c), P1-P2 is formed on the male joint portion 2 having a substantially horizontal V-shaped protrusion having a bottom surface 2a.

  Next, from FIG. 2A, reference numerals 4 and 5 denote apparatuses for setting the upper surface of the other wood board 1b as a cutting ruler surface. Reference numeral 4 denotes an upper surface position fixing tool for fixing the upper surface position of the wood board 1b, and includes a roll body, a plate body, a block body, and the like. Reference numeral 5 denotes a push-up tool for pushing up and fixing the lower surface of the wooden board 1b to press and fix the upper surface of the wooden board 1b to the upper surface position fixing tool 4. From a roll body, a plate body, a block body and the like that can be raised and lowered Become. Reference numeral 7 denotes a cutting tool such as a saw set so that the other side edge of the upper surface of the wood board 1b is cut obliquely at a predetermined angle α1 with the upper surface as a cutting ruler surface.

  As shown in FIG. 2A, first, the lower surface of the wooden board 1b is pushed up by the push-up tool 5, and the upper surface of the wooden board 1b is pressed against the upper surface position fixing tool 4, thereby fixing the position of the wooden board 1b. Next, with the upper surface of the other wood board 1b as the cutting ruler surface, the other side edge portion of the upper surface side reaches the predetermined position Q1 where the vertical distance from the upper surface is q from the center to the upper surface side. In this manner, the cutting tool 7 such as a saw is used to cut obliquely at an inclination angle α1 and make a cut.

  Next, from FIG. 2 (b), 4 'and 5' are devices for setting the lower surface of the other wood board 1b as a cutting ruler surface. Reference numeral 4 'denotes a lower surface position fixing tool for fixing the lower surface position of the wood board 1b, which includes a roll body, a plate body, a block body, and the like. Reference numeral 5 'denotes a pressing tool for pressing the upper surface of the wood board 1b and pressing and fixing the lower surface thereof to the lower surface position fixing tool 4'. From a roll body, a plate body, a block body and the like that can be moved up and down. Become. 7 'is a cutting tool such as a saw set so as to cut the other side edge of the lower side of the wood board 1b obliquely upward at a predetermined angle with the lower surface as a cutting ruler surface.

  As shown in FIG. 2B, the position of the wooden board 1b is fixed by first pressing the upper surface of the wooden board 1b with the pressing tool 5 'and pressing the lower surface against the lower surface position fixing tool 4'. Next, with the lower surface of this one wood board 1b as the cutting ruler surface, the other side edge of the lower surface side reaches a predetermined position Q2 where the vertical distance from the lower surface is q near the lower surface side from the center in the inside. In this way, the cutting tool 7 'such as a saw is cut obliquely at an inclination angle α2 to make a cut. Here, the inclination angles α1 and α2 of the cutting tools 7 and 7 ′ such as saws are the same as the inclination angles α1 and α2 of the cutting tools 6 and 6 ′ such as saws used to form the male joint 2. The angle is formed so as to be an angle of α1 = α2 in a relation reversed with respect to the horizontal center line of the wood board 1b.

  In this way, the other side edge portions of the upper and lower surfaces of the other wood board 1b are cut obliquely as shown in FIG. 2 (a) and FIG. 2 (b), respectively. By doing so, as shown in FIG. 2 (c), Q1-Q2 is formed in the female joint portion 3 formed of a groove having a substantially horizontal V-shaped cross section with a bottom surface bottom portion 3a. Here, the bottom part 3a does not need to have a bottom surface shape, and can also be formed in an acute angle shape.

  Next, an adhesive is used to bond the male joint portion 2 formed on one end face of the one wooden board 1a and the female joint section 3 formed on the other end face of the other wooden board 1b. And are joined and integrated as shown in FIG. 3 by pressurizing in the vertical direction or heating and pressurizing.

  In the present embodiment, the case where one wooden board 1a is slightly thicker than the other wooden board 1b is shown. Even if there is such a thickness variation, the variation is distributed at the center of the joining portion 8 in the thickness direction, so that the level difference generated on the upper and lower surfaces of the joining portion 8 can be halved. Further, the bottom portion of the male joint portion 2 of the wood board 1a is formed on the bottom surface 2a, and a gap t is formed between the bottom surface 2a of the male joint portion 2 and the bottom portion 3a of the female joint portion 3 of the other wood board 1b. Since they are generated, they can be reliably and easily fitted together, and the yield can be improved by the width dimension of the gap t.

  In the present embodiment, one edge of the upper surface side of one wooden board 1a is cut obliquely in FIG. 1A, and one lower surface side of one wooden board 1a in FIG. 1B. The edge is cut obliquely, and a cut is made in the other side edge on the upper surface side of the other wooden board 1b in FIG. 2 (a), and the other side edge on the lower surface side of the other wooden board 1b in FIG. 2 (b). Although the description has been given in the order of cutting the parts, the present invention is not limited to the order described in this description, and can of course be performed in any order.

  Moreover, in the present Example, although the male junction part 2 was formed in the one side edge part of one wooden board 1a, the case where the female junction part 3 was formed in the other side edge part of the other wooden board 1b was illustrated, For example, the male joint 2 may be formed on one side edge of one wooden board 1a and the female joint may be formed on the other side edge, and the other side edge of the other wooden board 1b. The female joint portion 3 may be formed at the portion and the male joint portion may be formed at one side edge portion thereof.

In the joining method of the wooden board of this invention, the fragmentary sectional view explaining the method of forming the male junction part 2 of a cross-sectional substantially horizontal V shape in the one side end surface of the wooden board 1a. In the joining method of the wooden board of this invention, the fragmentary sectional view explaining the method of forming the female junction part 3 of a cross-sectional substantially horizontal V shape in the other side end surface of the wooden board 1b. The fragmentary sectional view explaining the joining state of wood board 1a, 1b in the joining method of the wood board of this invention. The fragmentary sectional view explaining the joining state of wood boards in the conventional wood board joining method. The fragmentary sectional view explaining another joining state of wood boards in the conventional wood board joining method.

Explanation of symbols

1a, 1b Wood board 2 Male joint
2a bottom surface 3 female joint portion 3a bottom portion 4 upper surface position fixing tool 4 'lower surface position fixing tool 5 push-up tool 5' pressing tool 6, 6 ', 7, 7' cutting tool 8 joint part

Claims (3)

  Using the upper surface of one of the wooden boards as a cutting ruler surface, one side edge of the upper surface side is cut obliquely at an inclination angle α1 so as to pass through the center predetermined position P1 closer to the upper surface side from the center of the one side end surface. The one side edge part cutting process of the upper surface side which cuts and the lower surface side of one wooden board as a cutting ruler surface, and the one side edge part of the lower surface side from the center of the one side end surface to the lower center side predetermined position P2 And a side edge cutting step of the lower surface side that cuts and cuts obliquely at an inclination angle α2 so as to pass through the cross-section, substantially horizontal V-shaped cross section with P1-P2 as the bottom surface on one side end surface of the one wood board And forming a male joint portion formed of a ridge-like protrusion, and using the upper surface of the other wooden board as a cutting ruler surface, the other side edge portion of the upper surface side from the center to the upper surface side near the upper surface side at a predetermined position Q1 Cut the other side edge of the upper surface to cut at an inclination angle α1 so as to reach at least And the lower surface of the other wood plate is a cutting ruler surface, and the other side edge of the lower surface is inclined at an inclination angle α2 so as to reach at least the center predetermined position Q2 near the lower surface from the center of the lower surface. By cutting in the other side edge part cutting process of the lower surface side to cut and make a cut, a female joint part consisting of a substantially horizontal V-shaped groove is formed on the other side end face of the other wooden board, and then A method for joining wooden boards, comprising: joining and integrating a male joint formed on one end face of the one wooden board and a female joint formed on the other end face of the other wooden board.   The vertical distance from the upper surface of one wooden board to the central predetermined position P1 near the upper surface side is equal to the vertical distance from the lower surface of one wooden board to the central predetermined position P2 near the lower surface side, and the other wooden board 2. The vertical distance from the upper surface to the center predetermined position Q <b> 1 closer to the upper surface side and the vertical distance from the lower surface of the other wooden board to the center predetermined position Q <b> 2 closer to the lower surface side are equal to each other. Wood board joining method.   The joint is integrated so that a gap is formed between the bottom of the protrusion having a substantially V-shaped cross section of the male joint and the bottom of the groove having a substantially V-shaped cross section of the female joint. The method for joining wood boards according to claim 1 or 2.

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