JPH0751285B2 - Manufacturing method of laminated wood - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing a laminated lumber by laminating and bonding a plurality of wooden lamina.

[Prior Art] Laminated wood made by laminating and adhering a large number of wooden lamina has been widely used in various fields, but in recent years, it has been used as a relatively large-scale structural member such as a beam or a pillar of a large wooden building. Is also being used.

The manufacturing process of the laminated wood according to FIGS. 4 to 6 is shown. In FIG. 4, reference numeral 1 denotes a wooden lamina, and when the wooden lamina 1 is horizontally moved in the longitudinal direction, it is for applying an adhesive upward. The hopper 3 is installed, and the adhesive 2 is discharged from the hopper 3 onto the surface of the lamina 1 that moves.

In this way, the adhesive 2 is applied to one surface of the wooden lamina 1, and as shown in FIG. 5, a large number of the wooden lamina 1 with the adhesive 2 are laminated to form the laminated body 4, and the sixth laminated body is formed.
As shown in the figure, the entire laminated body 4 is pressure-bonded in the laminating direction to obtain an integrated material 5 which is integrated as a whole.

However, as described above, the wooden lamina 1 only with the adhesive 2 is used.
In the structural characteristics of conventional laminated timbers that are joined together, the bending characteristics are not always sufficient, and especially when the laminated lumber is used as structural members such as beams and columns of large-scale buildings as described above. There is a problem of having to make a large cross section.

Therefore, as can be seen in Japanese Utility Model Laid-Open No. 61-128005, Japanese Utility Model Laid-Open No. 1-68803, Japanese Utility Model Laid-Open No. 1-1142714, Japanese Utility Model Laid-Open No. 1-1142715, for example, a reinforcing material is applied to the outer layer portion of the laminated lamina. Is proposed to be embedded.

In Japanese Utility Model Laid-Open No. Sho 61-128005, this reinforcing material is a plate-like material such as metal, and in Japanese Utility Model Laid-Open No. 1-68803, the reinforcing material is a mesh of reinforcing steel, carbon fiber, aramid fiber or ceramic with high Young's modulus. In Japanese Utility Model Publication No. 1-142714 and Japanese Utility Model Publication No. 1-142715, the reinforcing material is a long fiber of high-rigidity fiber such as carbon fiber, and the bending rigidity of the laminated material is improved by embedding the reinforcing material. To improve.

Among them, the long fibers as the reinforcing material in Japanese Utility Model Publication No. 1-142714 and Japanese Utility Model Publication No. 1-142715 have fibers having excellent tensile properties, for example, carbon fibers, glass fibers, steel fibers, aramid fibers, etc. Which is twisted into a string and cut into a predetermined length, or a fiber cloth,
As shown in the figure, the long fibers 6 are sandwiched and bonded between the lamina 1a located at the outermost layer of the lamina laminate 4 and the lamina 1, 1 inside them.

A large number of these long fibers 6 are arranged linearly along the length direction of the lamina laminate 4 and in a state of being substantially parallel to each other.

By the way, in order to manufacture the laminated member 5 having the above-mentioned structure, as shown in FIG. 8, only the intermediate lamina 1 is temporarily bonded or temporarily fixed by appropriate means, and appropriate jigs 11 are provided on the upper surface side and the lower surface side thereof. Filament 6 with a predetermined tension applied by
And the outermost lamina 1a, 1 above and below those filaments 6.
By arranging a and pressing it from above and below, all the lamina 1a, 1a, 1 are bonded together and the long fiber 6 is sandwiched at the same time.

[Problems to be Solved by the Invention]

However, in the conventional method for manufacturing a laminated material shown in FIGS. 7 and 8, in order to sandwich the long fiber 6 as a reinforcing material, the long fiber 6 is applied with a predetermined tension by an appropriate jig 11. A step of arranging along the lamina 1 and 1a is necessary, and time and labor are required accordingly.

The object of the present invention is to eliminate the disadvantages of the conventional example, and in a method for producing a laminated wood by laminating and joining a plurality of wooden lamina, fibers as a reinforcing material are easily and quickly arranged between the lamina in a flow operation. An object of the present invention is to provide a method of manufacturing laminated wood that can be installed.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is a method for manufacturing a laminated wood by laminating and joining a plurality of wooden lamina, in which at least the outer lamina of the wooden lamina to be laminated is joined to the lower end by a delivery roller. Insert the cloth-woven fiber into the provided adhesive application hopper, impregnate or apply the adhesive to this fiber, and send out the cloth-woven fiber together with the adhesive from the application hopper outlet. The gist of the present invention is to discharge the lamina toward one lamina surface and to press the lamina against each other.

[Action]

According to the present invention, the fiber is first integrated with the adhesive in the coating hopper with the built-in stirrer, so that the lamina can be bonded simply by flowing the fiber to the lamina surface.

Further, the fiber to be mixed with the adhesive is a cloth-like material, so that the strength of the fiber itself is high, and when lamina is adhesively fixed, this fiber is arranged by being fixed with an adhesive, Bending deformation is prevented by this fiber, and therefore, a product having further improved bending characteristics is obtained.

Further, in the method for manufacturing the laminated material, since the lamina constituting the laminated material moves in the length direction, the manufacturing can be performed quickly and accurately by the flow work.

Then, the woven fibers are collected as a roll or the like, which is sequentially drawn out and inserted into a coating hopper containing a stirrer and containing an adhesive.

This application hopper can always apply a certain amount of adhesive to the woven fibers evenly, and the roller does not bias or block the adhesive-coated woven fibers during discharge. It is possible to smoothly discharge the fibers, and it is possible to precisely apply this fiber to the position that becomes the bonding surface of the wooden lamina.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view showing an embodiment of the method for manufacturing laminated wood according to the present invention, and shows a step corresponding to FIG. 4 showing the steps of the conventional example.

As in the conventional case, when the wooden lamina 1 is horizontally moved in the longitudinal direction, the adhesive application hopper 3 is installed above and the adhesive 2 is discharged from the hopper 3 toward the moving lamina 1 surface. At that time, the fibers 7 are sequentially drawn from the fiber roll 8 and inserted into the hopper 3 for applying the adhesive 2.

Then, the fibers 7 are discharged from the outlet of the coating hopper 3 together with the adhesive 2 toward the lamina 1 surface. The outlet of this hopper 3 has a delivery roller so that the fibers 7 can be discharged in this way.

In this way, the fibers 7 are impregnated with or applied to the surface of the adhesive 2 in the hopper 3 before being arranged on the surface of the lamina 1, and the fibers 7 are spread on the surface of the lamina 1 and at the same time. The adhesive 2 is applied to the surface.

Therefore, as shown in FIGS. 2 and 3, the lamina 1 with the adhesive 2 and the fiber 7 may be pressure-bonded to another lamina 1.

As the fiber 7, carbon fiber, glass fiber, steel fiber, aramid fiber or the like twisted into a predetermined thickness and cut into a predetermined length, or a fiber having excellent tensile properties is used. It is woven into a mesh.

Further, the fibers 7 may be arranged between all the lamina 1, but at least the outer layer portion of the wooden lamina 1 to be laminated, that is, the lamina 1a, 1a located at the outermost layer of the lamina laminate 4 and those Between the inner lamina 1,1 and the inner lamina 1,1.

In the laminated material 5 thus obtained, the high-rigidity fiber 7 having excellent tensile properties is arranged in the outer layer portion of the lamina laminate 4, that is, the portion which becomes a tensile side and tends to expand when a bending load is applied. Therefore, this fiber 7 prevents bending deformation,
Therefore, the bending characteristics are improved, and it is possible to obtain a material having high bending rigidity not only when formed as a straight material but also when formed as a curved material.

〔The invention's effect〕

As described above, according to the method for manufacturing a laminated wood of the present invention,
When laminating multiple wooden lamina to obtain laminated wood,
It is possible to dispose fibers as a reinforcing material between at least the lamina of the outer layer portion of the wooden lamina to be laminated by simply changing the step of applying an adhesive to the conventional lamina surface, which is easy and easy in flow work. Since the fibers as the reinforcing material can be quickly arranged, the number of manufacturing steps is small and the cost is low.

In addition, since the fibers mixed in the adhesive are woven in a cloth shape, when lamina is bonded and fixed to each other, this fiber is arranged by being fixed with an adhesive, and this fiber prevents bending deformation. Therefore, it is possible to obtain a flexural property further improved.

Then, the woven fibers are collected as a roll or the like, which is sequentially drawn out and inserted into a coating hopper containing a stirrer and containing an adhesive. Then, this coating hopper can always apply a constant amount of adhesive to the woven fibers evenly, and at the time of discharging, the roller biases or blocks the woven fibers coated with the adhesive. The fibers can be discharged smoothly without causing any sticking, and this fiber can be applied precisely to the position that becomes the adhesion surface of the wooden lamina, so that a highly accurate standard product can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a method for manufacturing laminated wood according to the present invention, FIG. 2 is a perspective view of a main part of the following steps, FIG. 3 is a front view of the same, and FIGS. Is a perspective view of each step showing a conventional example, FIG. 7 is a perspective view of another conventional example, and FIG.
It is a side view of a process. 1, 1a ... Wooden lamina, 2 ... Adhesive, 3 ... Coating hopper, 4 ... Laminated body, 5 ... Glued wood, 6 ... Long fibers, 7 ... Fiber, 8 ... Fiber roll, 11 ... Jig

Front Page Continuation (72) Inventor Honma Kansuke 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References JP 48-5904 (JP, A) JP 51 -38402 (JP, A) JP-A-56-115659 (JP, A) Actually developed 63-121508 (JP, U)

Claims (1)

[Claims] 1. A method for manufacturing a laminated wood by laminating and joining a plurality of wooden lamina, wherein at least the outer lamina of the laminated wooden lamina is joined with an adhesive agent provided with a feeding roller at a lower end thereof. The cloth-woven fiber is inserted into the application hopper, and the fiber is impregnated or coated with an adhesive, and the cloth-woven fiber is sent out together with the adhesive from the application hopper outlet, and one of the lamina is fed by a roller. A method for manufacturing a laminated material, characterized in that the lamina is discharged toward a surface and the lamina is pressure-bonded to each other.