JP2008093936A - Method for manufacturing woody material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a woody material capable of effectively utilizing end materials and waste wood materials and improving recycling ratio. <P>SOLUTION: The end materials 11 generated when materials used for wood frame construction are processed into a specified length dimension, are connected in the lengthwise direction to form a longitudinally joined member 12 with a specified length. After a plurality of the longitudinally joined members 12 are laminated in the thickness direction of the end materials 11 and stuck together, a plurality of stuck longitudinally joined members 12 are cut along the longitudinal direction of the longitudinally members 12 so as to make it orthogonal to the sticking face of adjoining longitudinally joined members 12 to form a woody material with a specified dimension. It is possible thereby to form the woody material 10 by combining the end materials 11 generated when the materials used for the wood frame construction are processed into a specified length dimension, and to improve the recycling ratio of the end materials 11. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for producing a wood material for effectively using offcuts produced by processing timber into predetermined dimensions.

In recent years, in order to prevent depletion of forest resources due to excessive deforestation and global warming due to a decrease in forests that absorb carbon dioxide, waste wood produced by processing timber and waste wood generated at the demolition site of wooden houses The recycling rate is improved by crushing unnecessary materials such as particleboard and papermaking raw material chips, fuel chips, etc., or processing them into plate panels or the like (for example, Patent Document 1). reference).
JP 2003-175504 A

  However, the demand for raw material chips and fuel chips for particleboard and papermaking is limited, and because there are many unprocessable scraps and waste wood on a predetermined shape of panel, etc., the scraps and waste wood are effective. Therefore, it is difficult to improve the recycling rate.

  An object of the present invention is to provide a method for producing a wooden material capable of improving the recycling rate by effectively using offcuts and waste wood.

  In order to achieve the above-mentioned object, the present invention connects the end materials generated when processing the material used for the frame wall construction method into a predetermined length dimension in the length direction to form a longitudinal joint member of a predetermined length. Then, after stacking and bonding a plurality of longitudinal members in the thickness direction of the end material, the longitudinally joined members are perpendicular to the bonding surface of the adjacent longitudinal members. By cutting along the longitudinal direction of the member, a wood material of a predetermined size is formed.

  Thereby, a woody material is formed by combining the edge material generated when processing the material used for the frame wall construction method into a predetermined length.

  According to the present invention, the wood material can be formed by combining the end materials generated when processing the material used in the frame wall construction method into a predetermined length dimension, so that the recycling rate of the end materials is improved. Can be achieved.

  FIGS. 1 to 5 show an embodiment of the present invention. FIG. 1 is an overall perspective view of a wood material, FIG. 2 is a perspective view of an end material with finger joint processing at the end, and FIG. FIG. 4 is a perspective view showing a cutting position of a longitudinally joined member laminated and bonded, and FIG. 5 is a flowchart showing a manufacturing process of a wood material.

  This wooden material 10 is composed of end materials generated when a dimension lumbar material used in a frame wall construction method (two-by-four construction method) as a construction method of a wooden house is processed into a predetermined length. In addition, the types of dimension lumbar materials used in the frame wall construction method are those having a thickness dimension × width dimension of 38 mm × 89 mm, 38 mm × 140 mm, 38 mm × 184 mm, 38 mm × 235 mm, 38 mm × 286 mm, 89 mm × 89 mm, respectively. Yes, each size mill is used for the production of wood materials.

  The wood material 10 is formed by connecting a plurality of end members 11 in the length direction and laminating and bonding the longitudinal member 12 formed in a predetermined length in the thickness direction of the end members 11. It is formed by cutting along the length direction of the end material 11 at a right angle to the bonding surface.

  The end material 11 is formed in a predetermined length dimension, and ends of the end material 11 adjacent to each other in the length direction are joined to each other by finger joints. When joining the end materials 11 adjacent to each other in the length direction, for example, an aqueous vinyl urethane-based adhesive is applied to the end portion 11a of the end material 11 subjected to finger joint processing. The end members 11 adjacent in the vertical direction are joined by the fitting force of the finger joint and the adhesive force of the adhesive.

  Adjacent longitudinally connected members 12 are bonded by an adhesive such as a thermosetting resorcinol resin using high-frequency dielectric heating, for example. At this time, the finger joints of the adjacent longitudinal connecting members are shifted and bonded so as not to be adjacent to each other.

  Next, the manufacturing method of the wooden material 10 is demonstrated using the flowchart of FIG.

  First, the end material 11 is cut so as to have a predetermined length dimension (step S1), finger joint processing is performed on the end portion 11a of the end material 11 formed to a predetermined length, and a plurality of end materials 11 are end-processed. A plurality of longitudinally connected members 12 having a predetermined length are formed by connecting a plurality of members 11 in the length direction (step S2). Next, the seams on both sides in the thickness direction and on both sides in the width direction of the longitudinal member 12 are smoothly finished by molding (step S3), and the longitudinal member 12 is laminated and bonded in the thickness direction (step S4). Finally, the longitudinal member 12 laminated along the length direction at right angles to the bonding surfaces of the longitudinal members 12 is cut (step S5), and the wood material 10 formed by the cutting is joined to the seam by molding. A smooth finish is obtained (step S6).

  At this time, wood pieces and large sawdust are generated during the production of the wood material 10 such as cutting, finger joint processing and molder processing. However, the wood pieces are crushed to be used as chip material for particle board or cement wood board, and large sawdust is used for agriculture. And used for dairy farming.

  Thus, according to the manufacturing method of the woody material of the present embodiment, the end material 11 generated when processing the material used for the frame wall construction method into a predetermined length dimension is connected in the length direction to a predetermined length. After forming a plurality of longitudinal joining members 12 and laminating and joining a plurality of longitudinal joining members 12 in the thickness direction of the end material 11, the joined longitudinal joining members 12 are joined to adjacent longitudinal joining members 12. Since the wood material of a predetermined size is formed by cutting along the longitudinal direction of the longitudinal joining member 12 so as to be perpendicular to the bonding surface between each other, the material used for the frame wall construction method has a predetermined length. The wood material 10 can be formed by combining the end material 11 generated when processing the size, and the recycling rate of the end material 11 can be improved.

  Further, since each longitudinal member 12 is bonded so that the position of the connecting portion of the longitudinal members 12 adjacent to each other in the thickness direction of the end material 11 is shifted in the longitudinal direction, the longitudinal direction of the wood material 10 is predetermined. The connecting portions are not arranged at the positions, and the bending strength of the wooden material 10 can be made uniform in the length direction.

  Moreover, since the end materials 11 adjacent to each other in the length direction are connected by finger joints, the end materials 11 can be reliably connected in the longitudinal direction, and the length dimension of the wood material 10 is arbitrarily set. It becomes possible to do.

  In addition, since the other woody material is formed using the offcut generated by the formation of the woody material 10, the offcut can be used for another purpose, and the improvement of the recycling rate is further improved. Is possible.

  In the above embodiment, the end members 11 adjacent to each other in the length direction are connected by finger joints, but may be connected by a scarf joint or a butt joint.

Whole perspective view of woody material showing one embodiment of the present invention Perspective view of the end material with finger joint processing on the end The perspective view which shows the process which adhere | attaches a longitudinal joining member The perspective view which shows the cutting position of the laminated member which carried out lamination adhesion Flow chart showing the manufacturing process of wood materials

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Wood material, 11 ... End material, 11a ... End part, 12 ... Longitudinal member.

Claims (4)

The end material generated when processing the wood material used for the frame wall construction method into a predetermined length dimension is connected in the length direction to form a longitudinal member of a predetermined length, and a plurality of longitudinal members are formed as end materials. After stacking and bonding a plurality of layers in the thickness direction, the plurality of bonded longitudinal members are cut along the longitudinal direction of the longitudinal members so that they are perpendicular to the bonding surfaces of adjacent longitudinal members. A method for producing a wood material, characterized in that a wood material of a predetermined size is formed. The method for producing a woody material according to claim 1, wherein the longitudinal members are bonded so that the connecting portions of the longitudinal members adjacent to each other in the thickness direction of the end members are displaced in the length direction. The end materials adjacent to each other in the length direction are connected by finger joints. The method for producing a woody material according to claim 1 or 2. The method for producing a woody material according to claim 1, 2 or 3, wherein another woody material is formed by using the end material generated by the formation of the woody material.

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