JP3340533B2 - Truss panel type core material and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core material for building materials constructed by combining wooden veneers or plywood, and more particularly to a truss panel type core material having excellent bending strength and compressive strength. Things.

[0002]

2. Description of the Related Art A laminated panel using a paper core made of paper is known as a so-called core material for a flash panel. Kaihei 5-5054
No. 0, “Composite sheet and its manufacturing method” and the like, and are widely used. These flash panels are generally made of corrugated cardboard and are used as a substitute for wood, so there is no shortage of insufficient strength, and their use as building materials has been limited. Further, the surface of the flash panel is limited to a flat shape, and it is difficult to provide a variety of shapes such as an arch-shaped cross-section.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a core material for building materials having sufficient bending strength and compressive strength by combining wooden veneers or plywood, and a method for producing the same. . Another object of the present invention is to provide a core material capable of coping with a change such as having an arch-shaped cross-sectional shape, and a method of manufacturing the same.

[0004]

SUMMARY OF THE INVENTION The present invention provides a core having a truss panel type cross-sectional shape and a method for producing the same. An upper layer panel made of a plate material, a lower layer panel made of a sheet-like plate material, and a saw blade-shaped intermediate web adhered to each of the upper layer panel and the lower layer panel with an adhesive, and the intermediate web includes a large number of intermediate webs. Each of the sheet-like plate materials has its front and back edges cut off diagonally alternately, and the tips of the diagonally cut-off tapered portions abut each other. An adhesive tape is attached to the back side of each tapered portion.

[0005] In a second aspect of the core material according to the present invention, one of the upper panel and the lower panel is formed flat, and the other is bent into an arc-shaped cross section.

In a first aspect of the method for manufacturing a truss panel type core material according to the present invention, a sheet material extending in the longitudinal direction is prepared, and the front and back sides of the sheet material are alternately arranged at predetermined intervals. Adhesive tape is applied in the transverse direction, and the back side of almost the center portion of each adhesive tape is cut into a V-shaped cross section except for the thickness of the adhesive tape, whereby the front side and the back side alternately extend in the transverse direction. An intermediate web having a U-shaped groove is formed, and the intermediate web is bent from the position of the V-shaped groove toward the adhesive tape and bent on a saw blade, and placed on a lower panel made of a sheet-like plate material. Temporarily fixed with an adhesive in a molten state, an upper panel made of a sheet-like sheet material is placed on the saw-toothed intermediate web, and temporarily fixed with an adhesive in a molten state, and the upper panel and the lower panel are bonded together. Is characterized in that by adjusting such that a predetermined truss shape under pressure are formed, earnest securing each adhered portion by natural standing or heating the adhesive.

In a second aspect of the method for manufacturing a truss panel-type core material according to the present invention, a plurality of strip-shaped sheet materials are prepared, and one longitudinal edge of each sheet material is cut off obliquely. By alternately cutting off the edge opposite to the edge on the back side of the sheet-shaped plate material, alternate tapered portions are formed, and the tips of the tapered portions obtained by diagonally cutting these many strip-shaped sheet-shaped materials are joined together. Are aligned on a plane so that they abut each other, and the back side of the tapered portion between adjacent sheet-like plate materials is adhered to each other with an adhesive tape to form an integral intermediate web. The intermediate web is temporarily fixed with a molten adhesive while being bent into a saw blade shape at predetermined intervals, and an upper layer made of a sheet-like plate material is placed on the saw blade intermediate web. The upper panel and the lower panel, apply pressure between the upper and lower panels to adjust them so that a predetermined truss shape is formed, and leave the adhesive in the air or heat it The feature is that each bonded part is fixed in full scale.

[0008]

According to the first aspect of the present invention, based on such a configuration, the wooden upper panel and the lower panel are adhered and fixed via a rigid intermediate web, so that the conventional panel has a conventional bending strength and compressive strength. A much better core material is provided than a flash panel or honeycomb core. Since the core material according to the present invention has a through space in the transverse direction, it is convenient for passing piping and wiring when used as a building material.
In addition, this transverse penetration space acts as a heat insulating layer, and heat transfer from the lower panel to the upper panel must pass through approximately two layers of heat insulating space in the middle, so that the heat insulating effect is enhanced. I have. Since the edge of the sheet-like plate constituting the intermediate web is cut off obliquely, the bonding area between the upper and lower panels is increased, and the rigidity of the entire core is increased. In addition, it is superior in durability to paper core material, and can withstand long-term use as a building material.

In the second aspect of the present invention, the conventional flash panel or honeycomb core can be formed by bending the upper and lower panels in an arc shape as far as the plates can bend or using a pre-curved plate such as a curved plywood. Thus, it is possible to provide a core material having an arch shape which has been difficult.

In a first aspect of the method of manufacturing a truss panel-type core material according to the present invention, a V-shaped groove is formed in a long sheet-like plate material by using a cutter, and folded into a saw blade shape to form an intermediate web. Therefore, a large amount of core material can be produced very efficiently.

In the second embodiment of the manufacturing method, an intermediate web is formed by arranging and bonding a large number of plate materials cut in advance into a sheet shape in parallel, so that a narrow material having a limited use purpose is used. It is possible to obtain the advantage that the resources can be used and the resources can be effectively used. Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 shows a truss panel-type core according to a preferred embodiment of the present invention, in which a core 10 having a relatively large width is combined with a sheet-like plate made of wooden veneer or plywood. The cross section viewed from the side is formed in a truss shape. The core member 10 includes an upper panel 12 made of a single sheet-like plate, a lower panel 14 made of a single sheet-like plate, and a saw bonded to each of the upper panel 12 and the lower panel 14 with an adhesive. And an intermediate web 16 having a blade shape.

The intermediate web 16 is composed of a number of strip-shaped sheet materials 21 to 24 and adhesive tapes 31 to 34. Each of the sheet-like plate members 21 to 24 has its front edge and back surface alternately cut off diagonally, the diagonally cut-off tapered portions are joined to each other, and adhesive tapes 31 to 34 are attached to the back side of each tapered portion. Is affixed. Both end edges 16A and 16B of the intermediate web 16 are directly bonded to the panel 14 without using an adhesive tape.

FIGS. 2 to 4 show the manufacturing steps of the first embodiment of the method for manufacturing a truss panel type core material according to the present invention. First, as shown in FIG. 2A, a sheet-like plate 16 extending in the longitudinal direction is prepared. Next, adhesive tapes 31 to 35 are alternately stuck on the front side and the back side of the sheet-like plate material 16 at predetermined intervals in the transverse direction. next,
As shown in FIG. 2B, the back side of the substantially central portion of each adhesive tape is cut into a V-shaped cross section by a cutter while leaving only the thickness of the adhesive tape, whereby V-shaped grooves 41 to 45 alternately extending in the transverse direction. Is formed. At this time, the edge 16A of the sheet-like plate 16 is also cut off obliquely at the same angle.

Next, as shown in FIGS. 2C and 3, the intermediate web 16 is bent toward the adhesive tape at the positions of the V-shaped grooves 41 to 45, and is bent into a saw blade shape from a single sheet-like plate material. It is placed on the lower layer panel 14 and the position of the substantially horizontal portion 50 is temporarily fixed with an adhesive in a molten state. Subsequently, the upper panel 12 made of a single sheet-like plate is placed on the saw-toothed intermediate web 16 and the substantially horizontal portion 50 is formed.
Is temporarily fixed with an adhesive in a molten state.

Next, as shown in FIG.
Pressure is applied between the lower web 14 and the lower panel 14 and from the side of the intermediate web 16 using stoppers 52 and 54 and a suitable tool to adjust the truss shape so that a predetermined truss shape is formed. If there is a possibility that the dimensions of the panel or web will be deviated due to bending when applying pressure, the lateral stoppers 56, 58, 60 as shown in FIG. adjust. Finally, the adhesive is left in place or heated to fix each adhesive part in earnest,
The truss panel type core material is completed. Since this method processes a V-shaped groove in a large plate material, it is a suitable method when a large core material is completed at a factory.

As another method of manufacturing the truss panel type core material according to the present invention, a number of strip-shaped sheet materials 21 to 24 or the like which are first cut to a predetermined width are prepared, and as shown in FIG. 2B. By cutting off one edge in the longitudinal direction of each sheet material obliquely and cutting the edge opposite to the edge on the back side of the sheet material obliquely, alternate taper portions 40 are formed with respect to each sheet material. A number of strip-shaped sheet materials are aligned on a plane such that the tips of the tapered portions 40 cut obliquely are abutted, and the back sides of the tapered portions 40 between adjacent sheet materials are pasted together with adhesive tape. By attaching, the integral intermediate web 16 can be formed. This intermediate web 1
Subsequent steps of bonding 6 to the upper and lower panels can use the same steps as the above-described manufacturing method. This method is suitable when a large number of sheet-like plate members having a relatively small width are collected and effectively used.

In any of the above-mentioned manufacturing methods, the intermediate web 16 can be folded small as shown in FIG. 6, so that the intermediate web 16 can be folded and transported to the construction site, and the truss panel type core material can be assembled on site.

The core material according to the present invention is manufactured to have a large width as shown in FIG. 1 and then cut to a predetermined size in the width direction to obtain a general truss beam as shown in FIG. Since 66 and the like can be manufactured in large quantities, the core material can be provided at low cost.

FIGS. 8 and 9 show another embodiment of the truss panel type core material according to the present invention. In FIG. 8, an intermediate web 76 is provided between a flat lower panel 74 and an arc-shaped upper panel 72. Adhesively fixed. In FIG. 9, an intermediate web 86 is adhesively fixed between an arc-shaped lower panel 84 and an arc-shaped upper panel 82.

Since the core material according to the present invention uses a plate made of a wooden veneer or a plywood, it is possible to provide various deformed core materials. As a wooden veneer, not only a simple plate material but also a plate material in which paper or cloth for preventing warpage is stuck on its surface can be used in the same manner.

[0022]

As described above in detail, according to the present invention, there is provided a core material for building material having a sufficient bending strength and compressive strength by combining a wooden veneer or a plywood, thereby reducing the weight of a building. Can be contributed to. Further, according to the present invention, a core material having an arched cross-sectional shape is provided,
The technical effects are extremely remarkable, for example, the application range of the core material is significantly expanded and the demand is increased.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a truss panel type core material according to the present invention.

FIG. 2 is a schematic view illustrating a manufacturing process of a truss panel type core material according to the present invention.

FIG. 3 is a schematic sectional view illustrating a manufacturing process of a truss panel type core material according to the present invention.

FIG. 4 is a schematic perspective view illustrating a manufacturing process of a truss panel type core material according to the present invention.

FIG. 5 is a schematic perspective view illustrating a manufacturing process of a truss panel type core material according to the present invention.

FIG. 6 is a side view showing a state where the intermediate web is folded.

FIG. 7 is a perspective view of a state in which a general truss beam is formed using the present invention.

FIG. 8 is a side view of another embodiment of the truss panel type core material according to the present invention.

FIG. 9 is a side view of another embodiment of the truss panel type core material according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Core material 12 Upper layer panel 14 Lower panel 16 Intermediate web 21-24 Sheet-shaped board material 31-35 Adhesive tape 40 Tapered part 41-45 V-shaped groove 50 Horizontal part 66 Truss beam

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E04C 2/00-2/54

Claims (4)

(57) [Claims] 1. A truss panel-type core material formed by combining sheet-like plate members made of a wooden veneer or a plywood and forming a truss-shaped cross section as viewed from the side thereof, and an upper layer panel made of a sheet-like plate member; A lower panel made of a sheet-like plate, and a saw-tooth-shaped intermediate web adhered to each of the upper panel and the lower panel with an adhesive, wherein the intermediate web has a number of strip-shaped sheet-like plates. Each sheet-like plate is cut off diagonally with the front and back of its edge alternately, and the tips of the diagonally cut-off tapered portions are abutted against each other, and on the back side of each tapered portion. A truss panel type core material having an adhesive tape stuck thereon. 2. The truss panel-type core material according to claim 1, wherein one of the upper panel and the lower panel is formed flat, and the other is bent into an arc-shaped cross section. 3. A sheet-like sheet material extending in the longitudinal direction is prepared, and adhesive tapes are stuck to the front side and the back side of the sheet-like sheet material alternately at predetermined intervals in a transverse direction. Is cut into a V-shaped cross section, leaving only the thickness of the adhesive tape, thereby forming an intermediate web having a V-shaped groove extending in the transverse direction alternately with the front side and the back side. While being bent from the groove position to the adhesive tape side and bent into a saw blade shape, it is placed on a lower layer panel made of a sheet-like plate material and temporarily fixed and fixed with an adhesive in a molten state. An upper layer panel made of a sheet-like sheet material is placed on top of it, and it is temporarily fixed with an adhesive in a molten state, and pressure is applied between the upper layer panel and the lower layer panel so that a predetermined truss shape is formed. , adhesive A method for manufacturing a truss panel-type core material, wherein each bonded portion is fixed in earnest by leaving the material naturally or by heating. 4. A plurality of strip-shaped sheet materials are prepared, and one edge in the longitudinal direction of each sheet material is cut off obliquely, and the edge opposite to the edge on the back side of the sheet material is slanted. The tapered portions are formed alternately by cutting them off, and these many strip-shaped sheet-like plates are aligned on a plane so that the tips of the tapered portions that are cut off diagonally are abutted. An integrated intermediate web is formed by adhering the back sides of the tapered portions with an adhesive tape, and the intermediate web is melted while being bent into a saw blade shape at a predetermined interval on a lower panel made of a sheet-like plate material. The upper panel made of a sheet-like sheet material is placed on the saw-toothed intermediate web and temporarily fixed with a molten adhesive, and the upper panel and the lower panel are fixed. A truss panel-type core characterized in that the truss panel type core is adjusted by applying pressure between the truss and a predetermined truss shape, and the adhesive is left in place or heated to fix each bonded part in earnest. The method of manufacturing the material.