JPH03146306A - Composite laminated wood and its manufacture - Google Patents

Abstract

PURPOSE:To improve productivity, while gluing strength is heightened and the positioning of mutual members is carried out easily and surely in manufacture by gluing integrally the wooden hollow intermediate members composed of to the platelike members on both sides with depressions and protrusions. CONSTITUTION:Composite laminated wood M1 is composed of two wooden plate members 1a having rectangular cross section and the same width and two wooden intermediate members 2a made of almost rectangular hollow cylinder intervening between the plate members. On the opposite surfaces of both plate members 1a, three grooves 3a of inverse trapezoids are respectively engraved in parallel longitudinally at the two positions of both sides. On the upper and lower surfaces of both intermediate members 2a, three ridges 3b having the cross sectional trapezoids corresponding to the grooves 3a are longitudinally formed in parallel respectively. These ridges 3b are set in the state of such a size, shape and arrangement interval that they may be inserted sufficiently into the corresponding grooves 3a. The grooves 3a and the ridges 3b are dimensionally set so that small gaps are formed for retaining the adhesive correspondingly to the properties of viscosity or impregnation and for discharging its excess amount.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is a composite laminated material useful for structural members of fittings and furniture such as wooden gates and doors, building materials for construction and decorative banner construction, etc. It relates to its manufacturing method.

(Prior art and its problems) Generally, laminated wood is made by combining multiple pieces of wood, such as ground wood or small square wood, with their fiber directions parallel to each other and gluing them together. lumber·
The ability to use derived materials in woodworking contributes to the effective use of wood resources, and the small diameter of the raw material allows efficient wood drying and chemical treatment, and it is easy to release stress during drying. It has the advantage of being able to adjust the strength and disperse defects in raw materials. In particular, laminated wood with a hollow cross section has the advantage that it is lightweight and has a large diameter, and the inside can be used for attaching electrical wiring and various metal fittings.

However, in conventional laminated timber, the members are generally bonded together on a flat surface, so in the case of laminated timber with a hollow cross section, the joint strength is insufficient due to the small joint area, making it vulnerable to twisting. In addition to these drawbacks, the overall strength is insufficient, and when assembling, it takes a lot of effort to position the members relative to each other, resulting in poor productivity and the problem of low yields as defective products are likely to be produced due to misalignment. there were.

(Means for Solving the Problems) In view of the above-mentioned circumstances, the present invention has high joint strength between members, is strong against torsion, has high overall strength, is lightweight, and is capable of positioning the members mutually. The purpose of this project is to provide a composite laminated material that can be easily and reliably produced and has excellent productivity.

As a means to achieve the above object, claim (1) of the present invention
Composite laminated timber consists of a plurality of wooden planks arranged parallel to each other with their surfaces facing each other, and an intermediate material consisting of a hollow profile interposed between these planks in the longitudinal direction. A plurality of irregularities are formed along the longitudinal direction on each contact surface of the intermediate material and the plate-like materials on both sides, and the acid intermediate material and the plate-like materials on both sides are bonded by fitting the above-mentioned irregularities into each other. This adopts a structure in which the parts are joined and integrated.

Further, in the composite laminated timber according to claim (2) of the present invention, in the structure of claim (]), the hollow molded material is made of a type of extruded molded material selected from light metal, hard synthetic resin, and ceramic.

Furthermore, in the composite laminated timber according to claim (3) of the present invention, in the structure according to claim (1) or (2), the opposing wooden planks are set to have the same width, and at least one side of these planks has the same width. A portion of the intermediate material protrudes between the side edges to form a tenon.

In addition, in the composite laminated timber according to claim (4) of the present invention, the opposing wooden planks are set to have the same width, and a part of the intermediate material protrudes from the side edge of at least one side of these planks to form a tenon. It consists of

On the other hand, in the method for manufacturing composite laminated timber according to the present invention, a joint surface portion having a plurality of unevenness along the longitudinal direction is formed at at least one place of a wooden plate-like material whose fiber direction is along the longitudinal direction, and By forming a plurality of grooves corresponding to the above-mentioned unevenness on two parallel surfaces of an intermediate material made of The present invention is characterized in that a plurality of plate members arranged in parallel with their plate surfaces facing each other and the intermediate member interposed between these plate members are joined and integrated.

(Function) Since the plate-like material and the intermediate material are joined together by joining each other through the adhesive on their uneven surfaces, the bonding area of the joint is significantly increased compared to when joining flat surfaces together. However, a large joint strength is obtained, and as a result of interlayer displacement at the joint part being prevented by the above-mentioned gassho fitting, it is possible to construct a hollow part by interposing a plurality of intermediate members between opposing plate materials. As such, even a composite structure with a small joint width provides high resistance to torsion. Further, when assembling and joining, positioning is automatically performed simply by fitting the above-mentioned projections and depressions together.

However, since the intermediate material itself is a hollow-shaped material, the weight of the composite laminated timber is reduced by using this material, and further weight reduction can be achieved by providing the above-mentioned hollow part. Defects due to errors in shape, size, placement, etc. are prevented. Furthermore, since a high-strength hollow material can be used, the composite laminated timber can be made to have high strength as a whole.

As the hollow shape material used for the intermediate material mentioned in 2, extrusion shapes made of light metals such as aluminum and its alloys, hard synthetic resins, ceramics, etc., which are free and strong, are suitable.

In addition to veneers such as sawn wood, LV
Laminated materials such as L materials can also be used.

In addition, when the opposing wooden planks are set to have the same width, by positioning the intermediate material inward from the side edges of both planks, the groove can be created by positioning the intermediate material a part of the width from the side edges. Due to the protruding position, tenons are formed along the longitudinal direction. This grooved or tenoned composite glulam can be connected by tongue and groove joints to other components or to correspondingly grooved or grooved composite glulam.

(Example) Embodiments of the present invention will be described below based on the drawings.

The composite laminated timber M1 shown in FIGS. 1 and 2 is interposed between two wood plate-like materials 1a and la having a rectangular cross section and the same width. It is composed of an intermediate member 2a consisting of two approximately rectangular cylindrical hollow members. Note that the fiber direction of the plate material 1a is along the longitudinal direction (the same applies to all composite laminated materials to be described later).

Therefore, on the opposing surfaces of both plate materials 1a and la, respectively,
Three grooves 3a each having an inverted trapezoid cross section are carved parallel to each other along the longitudinal direction at two locations on both sides. on the other hand,
Three protruding stripes 3b each having a trapezoidal cross-section and corresponding to the grooved stripes 3a are formed parallel to each other along the longitudinal direction on two parallel surfaces, that is, on the upper and lower surfaces of the rain intermediate members 2a, 2a.

Each of the protrusions 3b is set to a size, shape, and arrangement interval that allows it to be completely fitted into the corresponding concave line 3a, and the laminated wood M1
The plate materials 1a, la and the intermediate materials 2a, 2a are arranged in a state where three pairs of concave strips 3a and convex strips 3b come together on each opposing surface,
It is manufactured by joining and integrating with an adhesive, and has a rectangular hollow part 4 surrounded by both plate-like materials la, la and intermediate materials 2a, 2a on the inside, and both sides. The side surfaces of the plate materials la, la and the intermediate material 2a are flush with each other.

Note that the concave strips 3a and the protrusive strips 3b are formed with a small amount of water, depending on the properties of the adhesive used such as its viscosity and impregnating property, in order to maintain the presence of the adhesive and discharge the excess amount in the mutually fitted state. It is desirable to set the dimensions so that a gap can be formed.

The composite laminated timber M2 shown in FIG. 3 consists of two wood plate-like materials 1b and lb with the same width and a rectangular cross section in which the grooves 3a on one side are located slightly toward the center, and two intermediate materials 2a similar to those described above. , 2a, and has a hollow part 4 like the composite laminated timber M1, and a groove 5 whose bottom is the side surface of the intermediate material 1a between the side edges of both plate-like materials 2b and 2b on one side. is formed. Such a laminated timber M2 can be connected to another member having a tenon that fits into the groove 5 or to a composite laminated timber M3 (to be described later) by a tongue and groove joint, and can also be connected in the same way by using a tongue and groove. It can also be connected to the composite laminated timber M2 or other members having grooves.

The composite laminated timber M3 shown in FIG.
and an intermediate member 2b made of a hollow member having a rectangular cross section and a rectangular cylindrical shape in which a group of wide protrusions 3b on both sides are formed biased to one side, and has a hollow part 4, and an intermediate member on one side. 2
b protrudes from the side edges of both plate-shaped members 2a, 2a to form a tenon 6. In such a composite laminated timber M3, there are 6
It is possible to connect to a member having grooves 5 such as the composite laminated timber M3 by using the above.

In addition, the above-mentioned composite laminated wood M2. In M3, grooves 5 or tenons 6 are provided only on one side, but composite laminated wood may be provided with grooves 5 on both sides.For example, composite laminated wood with grooves 5 on both sides can be Wooden plate-like material 1c, such as composite laminated wood M4.

The grooves 5 may be formed on both sides by interposing only one intermediate member 2c made of a wide flat hollow member having two groups of convex shapes 3b on both sides between the ICs.

Furthermore, for example, as in the composite laminated timber M5 shown in FIG. 6, by using the wooden plate-like materials 1b, lb and the intermediate materials 2a, 2b, a hollow material having a groove 5 and a tenon 6 on the other side can be formed. It can also be used as a mold. As described above, the composite laminated timber M5 having the grooves 5 and the tenons 6 is located on the left side of the figure as shown in the composite laminated timber M2. A member having a groove 5 such as M4 and a member having a tenon 6 such as composite laminated wood M3 on the right side can be connected, and
It is possible to connect any number of members having grooves 5 and tenons 6 having the same structure as this composite laminated material M4. Therefore,
For example, a plurality of composite laminated materials M5 are connected and composite laminated materials M2 are attached to both ends of the composite laminated materials M2. By connecting M3, a face plate of any width can be produced.

The laminated timber M6 shown in FIG. 7 uses a plate material 1d having a group of grooves 3a on both sides of both plate surfaces, and the plate materials 1a and la are arranged parallel to each other so as to face each other on both surfaces. , with intermediary members 2a, 2a interposed between the opposing faces, and joined and integrated by joining together using the same adhesive as described above to form a prismatic shape having two hollow parts 4.4,
For example, it can be used as a pillar material. In the same way, it is also possible to make a composite laminated timber in which four or more plate-shaped materials are arranged in parallel, and if grooves 5 and tenons 6 are provided in the same way as composite laminated timber M2 to M5, multiple laminated timbers can be formed. You can create strong assemblies using screw joints.

On the other hand, the above-mentioned laminated wood Ml, M2. M3. Although M5 has two intermediate members interposed between opposing plate-like bodies, for example, a wide plate-like member 1e such as composite laminated timber M7 shown in FIG.
Alternatively, three or more intermediate members may be interposed between the opposing sides.

Note that this composite laminated timber M7 has a hollow part 4 in the center with four intermediate members 2a interposed therebetween, so by cutting it like a temporary line in the center with a saw 7, the shape shown in FIG. Two pieces of composite laminated timber M2 having grooves 5 are obtained. Furthermore, if the same cutting means is used to replace the intermediate materials 2b on both sides of FIG. 8 with intermediate materials 2b, two pieces of composite laminated timber M5 shown in FIG. 6 can be manufactured. Therefore, this method of cutting wide-width composite laminated timber has the advantage that the number of man-hours can be significantly reduced compared to the method of manufacturing various narrow-width composite laminated timber one tree at a time.

By the way, the hollow parts 4 of the above-mentioned composite laminated materials M1 to M7 can be used to conduct electrical wiring for house automation, etc., and when used for doors etc., it is possible to easily attach mounting fittings, interlocking fittings, locking devices, etc. It can also be incorporated into the hollow part 4
It is also possible to fill it with a heat insulating material and use it as a heat insulating wall material, floor material, etc.

In addition, in the composite laminated material of the present invention, a decorative board may be attached to the side surface or, if necessary, the entire circumferential surface in order to prevent the joint portion formed by the intermediate material from being exposed to the outside. In addition, there are three plate-shaped materials If, if, for example, composite laminated timber M8 shown in FIG.

By joining and integrating the Ig and the four intermediate members 2a, etc., and further fitting and integrating the side plate 8 with the tenon 8a through an adhesive using the grooves 5 formed on both sides thereof. , composite laminated wood with hidden joints by intermediate material may also be used.

FIGS. 10 and 11 show modified examples of the composite laminated timber of the present invention. The composite laminated timber M9 shown in Fig. 11 is made up of two pairs of plate-like materials 1a arranged facing each other, each of which is an irregularly shaped cylindrical hollow material having a cruciform cross section and a group of protrusions 3b on both sides of both sides. The intermediate members 2d are used to connect and integrate them in parallel in a tongue-and-groove manner to form a wide thick plate as a whole. Moreover, the composite laminated timber 10 shown in FIG.
h... are connected in parallel in a tongue-and-groove joint manner by an intermediate member 2e made of a flat hollow member having a group of protrusions 3b on each side of both side edges. In these,
By using intermediate materials 2d and 2e with different widths, the width of the composite laminated material as a whole can be adjusted by using the same materials for other members.

Note that the cross-sectional shape of the uneven strips 3a and 3b is the trapezoid (
The convex side is not limited to an inverted trapezoid), but can be changed to a U-shape, triangle, etc., but the shape must be such that the base width of the convex side is larger than the top width in order to facilitate gassho mating. is desired. In addition, the depth or thickness of these uneven stripes 3a and 3b,
The number and arrangement interval can be set arbitrarily. Furthermore, it is also possible to reverse the relationship between the unevenness of the plate-like material and the intermediate material from that shown in the example, but in this case, the cutting area of the plate-like material becomes large and it is necessary to make the intermediate material thick. Therefore, there is a lot of waste.

Examples of applications in which the composite laminated timber of the present invention is used as structural members of gates and doors are shown below.

The gate 9 shown in FIGS. 12(A) to 12(C) has edge members 11 attached to the inner edges of the four peripheries of a rectangular peripheral frame 10 consisting of an upper frame 10a, a lower frame 10b, and left and right side frames 10c, 10c.
, 10b via the frame frames 11, 11, the stand 12...
are installed in parallel, and the entire structure is in the form of a lattice.

Therefore, the upper frame 10a and the left and right side frames 10c, 10c have a groove 5 on one side, and the composite laminated material M2 shown in FIG.
is used, and two plate-like materials 1i, 1 are used for the lower frame 10b.
A composite laminated material Mll is used in which three intermediate materials 2a are interposed between 4 and a similar groove 5 on one side, while a material having a T-shaped cross section is used as the edge material 11, and each composite laminated material Material M2. Ml 1 and the edge material 11 are connected by a tongue and groove joint method in which the tenon part 11a of the latter is fitted into the groove 5 of the former and bonded via the adhesive side, and the glulam M2. Mll and edge material 1
1, a decorative joint 16 is appropriately formed.

The door 13 shown in FIGS. 13(A) and 13(B) is constructed by interconnecting a plurality of laminated timber M5 having grooves 5 and tenons 6 as shown in FIG. A flat face plate is formed by connecting a composite laminated timber M2 with grooves 5 as shown in FIG. 4 and a laminated laminated timber M3 with tenons 6 as shown in FIG. Furthermore, the door 1 shown in FIGS. 14(A) to (C)
4 constitutes a decorative window part 14a by fitting vertically long strip-shaped glass plates 15 in two rows and four places above and below, with composite laminated wood M2 with grooves 5 on both left and right sides, and grooves 5 on both sides in the wide center part. A wide composite laminated timber M12 having grooves 5 on the sides and a composite laminated timber M13 having tenons 6 on both sides above, below and in the middle of the window portion 15a are used, and each glass plate 15 is made of composite laminated timber M2.
It is fitted between the M12 grooves 5.5.

In addition, the composite laminated timber of the present invention can be used in various applications such as frame materials and face plates of fittings such as gates and doors as described above, building materials such as columns, beams, floor materials, and wall materials, and furniture components. Suitably served.

(Effects unique to the invention) The composite laminated timber of the present invention has high bonding strength between members,
Even those with small joint widths are extremely strong against torsion, have great overall strength, and are lightweight.
Further, there is an advantage that mutual positioning of members can be easily and reliably performed during manufacturing, resulting in high yield and excellent productivity.

In addition, since the intermediate material of this composite laminated timber is made of shaped material, it is possible to use materials of uniform quality, and there is no risk of joint failures due to errors in the shape, size, arrangement, etc. of unevenness.
Upstream yield is improved.

By using the material shown in claim (2) as the intermediate mold material of the intermediate material, a particularly strong composite laminated material can be provided.

The composite laminated timber of claims (3) and (4) can be connected to similar composite laminated timber or other members by a tongue and groove joint method using grooves or tenons, and can be connected to similar composite laminated timber or other members, including frames and face plates. It can be widely used as a component of various types of assemblies.

Further, according to the method of the present invention of claim (5), it is easy to rate the constituent members and level the process, and the method of the present invention of various structures including those of the above claim and (4) can be easily rated. Glued laminated wood can be easily manufactured by simply changing the combination of members using the same procedure, and it is possible to achieve automatic production and manufacturing automation of composite laminated wood, thereby reducing manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a composite laminated timber according to one embodiment of the present invention, Fig. 2 is a sectional view of the same composite laminated timber, and Figs. 3 to 11 are all of other embodiments of the present invention. 12(A) is a front view of a gate using the composite laminated wood of the present invention, and FIG. 12(B) is a sectional view taken along line B-B in FIG. 12 (8). , FIG. 13(C) is a cross-sectional view taken along the line C-C in FIG. 13(A), FIG. A cross-sectional view taken along line B-B in the same figure (A),
Fig. 14 (A) is a front view of another door using the composite laminated wood of the present invention, Fig. 14 (B) is a sectional view taken along the line B-B of Fig. 14 (A), and Fig. 14 (C) is the same. FIG. 2 is a cross-sectional view taken along line CC in FIG. Ml-Ml3...Composite laminated wood, 1a-1i...Plate material, 2a-2e...Wood intermediate material, 3a...Concave strip, 3b...Convex strip, 4...Hollow part , 5...groove, 6...groove.

Claims (5)

[Claims] (1) Consisting of a plurality of wooden plate-like materials arranged in parallel with their plate surfaces facing each other, and an intermediate material consisting of a hollow-shaped material interposed between these planar materials along the longitudinal direction, the intermediate material A plurality of protrusions and depressions are formed along the longitudinal direction on each contacting surface of the plate material on both sides of the hollow material, and the hollow material and the plate materials on both sides are joined by bonding by fitting the recesses and recesses into each other. Composite laminated wood that is integrated. (2) The composite laminated timber according to claim (1), wherein the hollow shaped material is an extruded wall material selected from light metal, hard synthetic resin, and ceramic. (3) The opposing wooden planks are set to have the same width, and a groove whose bottom surface is the side surface of the intermediate material is formed between at least one side edge of these planks. (2)
Composite laminated timber as described. (4) Claims (1) to (3) wherein the opposing wooden planks are set to have the same width, and a portion of the intermediate material protrudes from at least one side edge of these planks to form a tenon. Composite laminated wood according to any of the above. (5) At least one joint surface portion having a plurality of unevenness along the longitudinal direction is formed at at least one place of the wood plate-like material whose fiber direction is along the longitudinal direction, and at the same time, at each of two parallel surfaces of the intermediate material made of the hollow section material. Forming multiple lines of unevenness corresponding to the above unevenness,
By fitting the uneven surfaces of the intermediate material to the bonding surfaces of the plate-like materials through an adhesive, a structure is formed between the plurality of plate-like materials whose plate surfaces are arranged in parallel with each other and these plate-like bodies. A method for manufacturing composite laminated timber, characterized by joining and integrating the intervening intermediate material.