JP2906114B2 - Roof structure and molding method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and a method of forming a roof material in which peaks and valleys are formed in a longitudinal direction of a plate material such as a steel plate, and particularly to a large-scale building such as a factory, a gymnasium, a warehouse, and a supermarket. The present invention relates to a structure of a roofing material suitable for roofing an object and a method of molding the same.

[0002]

2. Description of the Related Art Conventionally, roofing materials in which peaks and valleys are formed in the longitudinal direction of a steel sheet have been used for roofing various buildings. This type of roofing material is obtained by unwinding a coiled strip through an uncoiler, cutting it into appropriate lengths, and supplying the molding device with a roofing material having peaks and valleys of a predetermined shape. It has gained. A plurality of such roofing materials are arranged side by side in the roofing direction (lateral direction of the roofing material) and the roofing is performed.

[0003] In general, methods of molding roofing materials are roughly classified into two types. One is to mold roofing material at the factory, which is called factory molding. In this case, the roofing material formed by the factory is short or medium-sized, and the length of the roofing material is limited to about 20 m for transportation reasons. Roofing by factory molding has the advantage that it can be transported anywhere that a trailer can go,
Due to its length, it is not suitable for roofing large buildings such as gymnasiums.

That is, since this kind of roofing material has a sectional shape as shown in FIG. 9, for example, any number of roofing materials can be juxtaposed in the roofing direction. However, even if a plurality of, for example, two short or medium-sized roofing materials 30 are joined in the longitudinal direction, they have exactly the same shape (dimension).
Therefore, there is a difference in the plane dimension appearing on the front surface of the first roofing material 30 and the plane dimension appearing on the back surface 30 of the second roofing material by the thickness of the roofing material 30. And the gap 31 is generated at the overlapping portion.

[0005] However, the roofing material 30 is directly exposed to the wind and rain. If the gap 31 is formed in this overlapping portion, rainwater infiltration is caused, and the roofing material 30 is rusted, leaks from the roof, or peels off due to strong wind. This leaves a challenge in the durability of steel. Therefore, the roof material made by the factory molding described above is exclusively
At present, it is used for roofing small and medium-sized buildings such as ordinary houses.

On the other hand, a roof material is molded at a construction site and is called on-site molding. This on-site molding includes ground molding and stage molding. For ground molding, a molding device including an uncoiler and a fixed-size cutting machine is installed at the construction site to form a roofing material corresponding to the roof length of the target building, and a large crane is used to lift the molded roofing material. To be moved, stacked and stored. Next, the roofing material is lifted to the height of the roof by a large crane, and the roofing material is juxtaposed in the roofing direction, and the roof is roofed. In addition, stage molding is to temporarily install a stage approximately the same height as the roof near the building under construction,
A molding device is installed on this stage to form a roofing material according to the length of the roof of the target building, and each time one roofing material is molded, the molding device is moved in a roofing direction, Roofing is performed by sequentially molding roofing materials.

[0007] Such a roofing material formed by in-situ molding is 10
It is said that a long roof material having a length of more than 0 m can be easily formed and is suitable for roofing of a large building such as a factory or a gym. However, in this in-situ molding, it is necessary to secure a processing place for installing a molding device and the like, and when a molding processing place cannot be secured, for example, when a building is fully built, it is very difficult to construct a roof. Further, regardless of the ground molding and the stage molding, the use of a large heavy machine is essential for the construction, and the construction cost is extremely high. Furthermore, such a large-scale construction work always involves danger, and it is necessary to give due consideration to safety measures during construction.

[0008]

The object of the invention is to solve the present invention has been developed in order to solve the conventional problems described above, it is an object of the present invention, the roof of a large building, even those of short and medium length It is an object of the present invention to provide a structure of a roofing material that can be easily roofed and a method of molding the same.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a roof material made of a sheet material of an appropriate length formed with ridges and valleys in the longitudinal direction and longitudinal ends and both side portions. in the structure of roofing material be configured consecutively provided the door, first roofing material
The width of the upper surface of the mountain and the upper back surface of the mountain of the second roofing material
The same distance along the length direction and the first distance
Of the front surface of the valley of the roofing material and the back surface of the valley of the second roofing material
While forming the same distance along the length direction,
The upper edge of the inclined portion formed on both sides of the first roofing material is bent outwardly of the side of the roofing material to form a fitting groove, and the outer edge of the fitting groove extends upward. To form an engaging groove having a substantially S-shaped cross section at the outer edge of the engaging groove, and the first roofing material arranged side by side on both sides of the first roofing material. A downwardly substantially U-shaped cover member is fitted so that the bent portion is inscribed, and a fitting piece having both edges of the cover member bent inward is engaged with the fitting groove to form the first member. Are connected to each other, and the upper edges of the slopes formed on both sides of the second roofing material are bent inward into the sides of the roofing material to form fitting grooves. An outer edge of the fitting groove is extended upward to form a locking groove, and a bent portion having a substantially S-shaped cross section is formed at the outer edge of the locking groove. The second roofing material juxtaposed to the section A downwardly substantially U-shaped cover member is fitted so as to inscribe the desired portion, and a fitting piece obtained by bending both edges of the cover member inward is fitted to the second roof material. The second roofing material is connected to each other by engaging the groove,
The slope of the roof material and the cover member of the first roof material are set to the inside, and the slope of the second roof material and the cover member of the second roof material are superimposed on the outside to form the first roof material. The end of the second roofing material in the longitudinal direction was configured so as to be overlapped.

[0010]

Further, in order to obtain the above-described configuration of the present invention, a steel sheet of an arbitrary length is supplied to a forming apparatus, and a predetermined number of rolling rollers provided on a roller shaft in the forming apparatus apply a predetermined number of rolling rollers to the steel sheet. In the method for molding a roofing material, which obtains a roofing material by molding a peak portion and a valley portion of a shape, each rolling roller can freely adjust its width and freely adjust the width between the rolling rollers. Thus, a method characterized by arbitrarily changing the widths of the peaks and valleys formed in the roofing material is adopted.

In this case, an appropriate number of large-diameter rolling rollers and small-diameter rolling rollers are provided on a roller shaft in the molding apparatus, and a plurality of peak-width changing plates are provided on the large-diameter rolling rollers, and a small-diameter rolling roller is provided. A plurality of valley width changing plates are provided on the roller, and after forming the first roofing material, the number of ridge width changing plates provided on the large-diameter rolling roller is increased, while the valley provided on the small-diameter rolling roller is increased. By reducing the width change plate, the plane dimensions of the back surface of the n-th roofing material are molded to be approximately the same as the plane dimensions of the surface of the n-1th roofing material, and the n-th roof material is sequentially adjacent to the rear end.
Is preferably molded.

[0013]

According to the present invention constructed as described above, the ends of the second roofing material are superimposed on the ends of the first roofing material, as shown in the theoretical configuration diagrams of FIGS. When the edges of the third roofing material are superimposed on the edges of the second roofing material, and the adjacent edges are sequentially superimposed in the longitudinal direction, the front and back surfaces of each roofing material are substantially the same. Since they are formed into dimensions and have shapes that completely overlap each other, no gap is generated at the overlapping portion of each roofing material. In the theoretical configuration diagrams shown in FIGS. 6 and 7, although the first to fourth roofing materials 1 to 4 are shown, the roofing material of the present invention includes a plurality of first to nth roofing materials. Even if adjacent ends are sequentially overlapped in the longitudinal direction,
There is no gap at the overlapping portion of each roofing material.

Each of the plurality of roof materials arranged side by side is fixed to a beam of a building structure via a holding member, and adjacent roof portions of each roof material are substantially similar to this roof material. Since the cover members having the same length are fitted, the fixed portion of the roof material is not exposed to rain, and no rust is generated at this portion.
Furthermore, since the toughened portion of the roofing material of the present invention has a substantially S-shaped cross section, when each roofing material is juxtaposed in the roofing direction and both are fitted by a cover member or the like, a space portion is formed at the fitting site. Is formed, so that even if this part is exposed to rain, rainwater does not infiltrate into the depth of the roofing material due to capillary action. In addition, since the roof members are integrally joined by fitting the cover member to the ridge of the roof material, an aesthetically superior one can be obtained.

A roof material having such a shape can be obtained by a method in which the width of an appropriate number of rolling rollers provided on a roller shaft in a molding apparatus is freely adjusted, and the width between the rolling rollers is freely adjusted. Can be For example, since the thickness t of the roofing material of the first to n (n is an integer of 2 or more) are the same, in FIG. 6, the width W ₁ when molding a first roofing material
Along with the mountain portion is molded of, valley portion of the width W ₂ is molded.

Next, in the molding of the second roofing material, after the first roofing material is molded, the width of the rolling rollers of the molding device and the width between the rolling rollers are adjusted, and the peak of the second roofing material is formed. Width W
₁ together with the W ₁ + 2t increased thickness 2t partial roofing, the width W ₂ of the valley reducing the thickness 2t partial roofing W ₂ -2
By setting t, the back surface of the second roofing material is molded so as to completely overlap with the surface of the first roofing material. That is,
Molding of the second and subsequent roofing materials, the width W ₁ sequentially with increasing thickness 2t minute increments roofing at the crest, the width W ₂ of the valley that are sequentially reduced thickness 2t minute increments roofing, longitudinal The ends of the roofing materials that are adjacent in the direction always overlap completely without any gap.

Therefore, there is no need to worry that rainwater enters from these superposed portions to cause a rain leak, rust is generated on the roofing material by the penetrated rainwater, or the roofing material is separated from the superposed portions by the strong wind. In addition, the same durability as the roofing material formed by in-situ molding can be obtained. Thus, according to the configuration of the present invention, the roof of a large building such as a factory or a gymnasium can be roofed even with a short or medium-sized roof material formed by a factory.

Further, the roofing material of the present invention has a simple structure and is easy to mold, so that it can be provided at a low cost. Moreover, the first to n-th steps are performed by the above-described method.
The roofing material is molded, so that even if each roofing material is stacked, it does not become bulky and can be easily stored and transported.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a roofing material structure and a molding method according to the present invention. FIG. 1 shows a roof A roofed by a roofing material to which the present invention is applied, and in particular, a first roofing material (hereinafter referred to as “roofing material 1”) and a second roofing material (hereinafter “roofing material 2”). Shows the polymerized portion of As can be understood from FIG. 1, the roofing material 1 is formed in a symmetrical shape in which a peak 1 a is formed in the center, for example.
The valleys 1b, 1b are molded on both sides of the peak 1a, and the slopes 1c, 1c molded on both sides of the roofing material 1 have, for example, a torn portion 1d, having a substantially S-shaped cross section. 1d is molded and given an appropriate elastic force. In this case, the length of the roofing material 1 is about several m to 20 m, and its plate thickness is about 0.6 mm to 1.2 mm.

The roofing material 1 is fixed to a beam 5 constituting a roof of a building structure. Various fixing means can be applied. In this embodiment, the fixing means has a structure B as shown in FIGS. 2 and 3, for example. That is, the holding pieces 6a, 6a of the holding member 6 are inserted into the locking grooves 1e, 1e formed in the adjacent bent portions 1d, 1d of the roof materials 1, 1 arranged side by side in the horizontal direction.
The holding member 6 is fixed to a beam member 5 constituting a roof of a building structure by a bolt 7 or the like, and is fixed to a substantially U-shaped tight frame 8 by a fixing bolt 9. Has become.

Then, the adjacent torn portions 1d, 1d, of the roofing material 1, 1
A cover member 1g is fitted to 1d. For this reason, fitting grooves 1f, 1f are formed in the above-mentioned bent portions 1d, 1d, and fitting pieces 1h, 1h are formed in the cover member 1g. In this case, since the flutes 1d, 1d were formed in a substantially S-shaped cross section, when the cover 1g was fitted to the flutes 1d, 1d, the space 16, 16 on the back surface of the cover 1g.
16 are formed to prevent rainwater from entering the fitting portion due to capillary action.

Further, since the tight frame 6 and the bolts 7 and 9 are not exposed to the outside by the cover member 1g, these parts do not rust unnecessarily. Note that the cover member 1g used in the present embodiment is, as shown in each figure,
It has substantially the same shape as the peak 1a of the roofing material 1, and its length and plate thickness are the same as those of the roofing material 1. Although not shown, the cover member 1g may be formed integrally with one side of the roofing material 1.

After the predetermined number of roofing materials 1 are arranged side by side in this way, the roofing material 2 is constructed. As can be understood from FIG. 1, the roof material 2 is also formed in a symmetrical shape with a peak 2a formed in the center, for example.
The valleys 2b, 2b are molded on both sides of the roofing material, and the ridges 2d, 2d are molded on the inclined parts 2c, 2c molded on both sides of the roofing material 2. Are molded into a substantially S-shape and given an appropriate elastic force. In this case, the length of the roofing material 2 is about several m to 20 m, and the thickness thereof is the same as that of the roofing material 1.

The roof member 2 is fixed to a beam member 11 constituting a roof of a building structure. The fixing means is the same as the fixing means for the roof materials 1, 1 described above, and has a structure C as shown in FIG. In other words, the roofing materials 2,
The locking grooves 2e, 2e formed in the two adjacent bent portions 2d, 2d
The holding pieces 12a, 12a of the holding member 12 are locked to the beam member 1 constituting the roof of the building structure.
1 is fixed to a substantially U-shaped tight frame 14 fixed with bolts 13 or the like with fixing bolts 15.

In the same manner as described above, the cover member 2g is fitted to the adjacent bent portions 2d of the roofing materials 2,2. For this reason, fitting grooves 2f, 2f are formed in the above-mentioned bent portions 2d, 2d, and fitting pieces 2h, 2f are formed in the cover member 2g.
h is molded. In this case, since the flutes 2d, 2d are formed in a substantially S-shaped cross section, when the cover 2g is fitted to the flutes 2d, 2d, the spaces 17, 17 are formed on the back surface of the cover 2g. This prevents rainwater from entering the fitting part due to capillary action.

Further, since the tight frame 6 and the bolts 7 and 9 are not exposed to the outside by the cover member 1g, these parts do not rust unnecessarily. In addition, the cover member 2g used in this embodiment is, as shown in each figure,
It has substantially the same shape as the peak 2a of the roofing material 2, and its length and plate thickness are the same as those of the roofing material 2. Although not shown, the cover member 2g may be formed integrally with one side of the roofing material 2.

In this embodiment, when the roofing material 2 is roofed after the roofing material 1, the rear end surface of the roofing material 1 and the front end back surface of the roofing material 2 are overlapped with an appropriate width, as shown in FIG. Structure D. In this case, the dimension (shape) appearing on the surface of the roofing material 1 and the dimension (shape) appearing on the back surface of the roofing material 2 are substantially the same so that rainwater does not enter from the overlapping portion of the roofing materials 1 and 2. By doing so, when the ends of the two 1 and 2 are overlapped with each other, no gap is generated in the overlapping portion. That is, the dimension appearing on the back surface of the n-th roofing material (n is an integer of 2 or more) provided after the roofing material 1 is substantially the same as the dimension appearing on the surface of the n-1th roofing material superimposed on the front end thereof. By molding, any number of roofing materials can be overlapped and connected in the longitudinal direction.

The above-mentioned roofing materials 1 to n are molded by the following method. Roofing materials 1 to n
Although not shown, for example, a strip wound in a coil shape is unwound through an uncoiler to have several m to 2 m.
The steel sheet is cut by about 0 m to obtain a steel sheet.
By supplying 0, a roof material having a peak and a valley of a predetermined shape and a cover member are obtained.

FIG. 8 shows an outline of the molding apparatus. The molding device 20 is provided with a roller shaft 21 in a direction perpendicular to the steel plate, and the roller shaft 21 is provided with a rolling roller for giving a predetermined three-dimensional shape to the steel plate. This rolling roller is provided with an appropriate number of large-diameter rolling rollers 22 and small-diameter rolling rollers 23. For example, the large-diameter rolling roller 22 molds the peaks 1a, 2a and the inclined portion 1c. Roller 23 of the valley 1
b and 2b are molded. Therefore, the shape to be molded into the roofing materials 1 and 2 is determined by the shape and the number of the rolling rollers 22 and 23. The roller shaft 21 is rotated by an appropriate torque in conjunction with an electric motor (not shown).

The forming apparatus 20 of this embodiment employs a method of freely adjusting the width of each of the rolling rollers 22 and 23 in order to form the roof materials 1 and 2 having the above-described structure. Specifically, the roller shaft 2 in the molding device 20
1 is provided with a plurality of peak-width changing plates 22a on the large-diameter rolling roller 22;
A configuration in which a plurality of valley width changing plates 23a are provided on a small-diameter rolling roller 23 located between the two.

The peak width changing plate 22a and the valley width changing plate 23a
Is a large-diameter rolling roller 22 or a small-diameter rolling roller 23.
It has a disk shape that is approximately the same diameter as the one, and is detachable.
In addition, the peak width changing plate 22a and the valley width changing plate 2 of the present embodiment.
The thickness of 3a is set to 2t, which is approximately twice the thickness t of the steel sheet passed through the forming apparatus.

Thus, after a predetermined number of the roofing materials 1 are formed, the peak width changing plate 22a of the large-diameter
By increasing the number of sheets and reducing the number of the valley width changing plates 23a of the small-diameter rolling roller 23 by one, the size of the back surface of the roofing material 2 can be substantially the same as the size of the surface of the roofing material 1. Similarly, for the roof material 3 and thereafter, the number of the ridge width changing plates 22a of the large-diameter rolling roller 22 is increased by one and the number of the valley width changing plates 23a of the small-diameter rolling roller 23 is reduced by one. , N-th roof slab can be sequentially molded.

In the present embodiment, as shown in FIG. 1, each roofing material 1 and 2 has a valley 1 on both sides of a single mountain 1a and 2a.
Although b, 1b, 2b, and 2b are molded, an arbitrary number of peaks and valleys can be molded at the time of implementation. Also,
The shapes of the peaks and valleys can also be implemented in any shape, and reinforcing ribs or the like may be molded at appropriate positions on each roofing material. Although not shown in the drawings, the cover members 1g and 2g are similarly formed by sequentially changing the width of the rollers and forming the cover members 1g and 2g.
A gap is not formed between the overlapping portion of the cover member 2g and the cover member 2g.

Next, the operation of this embodiment will be described. The plurality of roof materials 1 and 2 arranged side by side are fixed to beams 5 and 11 of the building structure via holding members 6 and 12.
The cover members 1g and 2g having substantially the same length as the roofing materials 1 and 2 are fitted to the adjacent ribs 1d and 1d and 2d and 2d, respectively. No rust occurs at this part.

Further, since the torn portions 1d and 2d of the roofing materials 1 and 2 of this embodiment have a substantially S-shaped cross section, each of the roofing materials 1 and 2 can be used.
When the adjacent ribs 1d, 1d and 2d, 2d are fitted with the cover members 1g, 2g by juxtaposing them in the roofing direction, the spaces 16, 17 are formed at the fitting sites. Even if the landing site is exposed to rain, the rainwater will cause the roofing material 1,
2 does not penetrate into the back. Moreover, the toe portions 1d, 1d and 2 of the adjacent roof materials 1, 2 arranged side by side in the horizontal direction
By fitting cover members 1g and 2g to d and 2d,
Since the respective roofing materials 1 and 2 are integrally joined, an aesthetically superior one can be obtained.

The roofing materials 1 and 2 of this embodiment are
The width of the appropriate number of large-diameter rolling rollers 22 provided on the inner roller shaft 21 is freely adjusted, and the width of the small-diameter rolling roller 23 is freely adjusted. For example, as shown in FIG. 6 and FIG.
4 have the same thickness t.
With the mountain portion 1a of the molding width W ₁ is molded, trough portion 1b of the width W ₂ is molded.

Next, the roofing material 2 is formed by molding the roofing material 1 and then adjusting the width of the large-diameter rolling roller 22 and the width of the small-diameter rolling roller 23 of the molding device 20 to obtain the crest of the roofing material 2. The width of 2a is increased by 2t of the thickness of the roofing material 1, and W ₁ + 2t
At the same time, the width of the valley 2b is reduced by the thickness 2t of the roofing material 1 to W ₂ -2t, so that the back surface of the roofing material 2 is molded so as to completely overlap with the surface of the roofing material 1. .

Accordingly, when molding the roofing material 3, the width of the peak 3a is increased by 2t of the thickness of the roofing material 2 to (W ₁ + 2t) + 2t, and the width of the valley 3b is increased by the thickness of the roofing material 2. reduce 2t fraction (W ₂ -2t) is molded -2t and result in further
Similarly molded roof material 4, the width of the crest 4a Increase thickness 2t partial roofing 3 with _{((W 1 + 2t) +} 2t) + a 2t, the width of the valleys 4b roofing 3 It is molded by a reduced thickness 2t min _{((W 2 -2t) -2t)} -2t.

That is, by adjusting the width of the large-diameter rolling roller 22 and the width of the small-diameter rolling roller 23 of the molding device 20, the dimension appearing on the back surface of the n-th roofing material can be adjusted to the surface of the n-1th roofing material. It is molded almost the same size as it appears. As a result, as shown in FIG. 4, the ends of the roofing materials adjacent to each other in the longitudinal direction of the roofing material are always completely overlapped with no gap. Although not shown, each cover member is formed by sequentially changing the width of the roller. As a result, no gap is formed in the overlapping portion of each cover member.

[0040]

As apparent from the above description, according to the roofing material structure and the molding method of the present invention, the following excellent effects can be obtained. In other words, rainwater infiltrates from the overlap portion between the ends of the roof material adjacent in the longitudinal direction, causing rain leakage, rusting of the roof material due to the infiltrated rainwater, or the roof material from the overlap portion due to strong wind There is no fear of peeling off, and the same durability and aesthetic appearance as a one-piece roofing material formed by on-site molding can be obtained. As a result, roofs of large buildings such as factories, warehouses, and gymnasiums can be roofed even with short or medium-sized roof materials formed by factory molding.

Therefore, even when the roof of a large building is to be roofed, since the conventional on-site molding is not required, the construction cost related to the roofing can be kept low, and large heavy equipment is required for the construction. The roofing work can be done safely. Further, the roofing material of the present invention has a simple structure and its molding method is easy, so that it can be provided at low cost. Moreover, the roofing material of the present invention does not become bulky even when a plurality of the roofing materials are stacked, and has effects such as easy storage and transportation.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment to which the present invention is applied.

FIG. 2 is a partial sectional view showing a structure of a portion B in FIG.

FIG. 3 is an exploded perspective view, partly cut away, showing a structure of a portion B in FIG. 1;

FIG. 4 is a partial sectional view showing a structure of a portion C in FIG. 1;

FIG. 5 is a partial sectional view showing a structure of a portion D in FIG. 1;

FIG. 6 is a conceptual diagram showing a theoretical configuration of the present invention.

FIG. 7 is a conceptual diagram showing a theoretical configuration of the present invention.

FIG. 8 is a schematic diagram showing a configuration of a molding device.

FIG. 9 is a partial cross-sectional view showing a state in which ends of a conventional roofing material are overlapped in the longitudinal direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st roof material 1a mountain part 1b valley part 1d ridge part 1g cover member 2 2nd roof material 2a hill part 2b valley part 2d ridge part 2g cover member 5 beam member 6 first holding member 8 tight frame 11 beam Material 12 Second holding member 14 Tight frame 20 Molding device 21 Roller shaft 22 Large diameter rolling roller 22a Peak width changing plate 23 Small diameter rolling roller 23a Valley width changing plate

Claims (3)

(57) [Claims] 1. A structure of the roofing material to be configured by interconnects the longitudinal end portion and both side portions of the roofing material made of plate material of appropriate that molded longitudinally peaks and troughs length, first Roofing material
The width of the upper surface of the mountain and the upper back surface of the mountain of the second roofing material
The same distance along the length direction and the first distance
Of the front surface of the valley of the roofing material and the back surface of the valley of the second roofing material
While forming the same distance along the length direction,
The upper edge of the inclined portion formed on both sides of the first roofing material is bent outwardly of the side of the roofing material to form a fitting groove, and the outer edge of the fitting groove extends upward. To form an engaging groove having a substantially S-shaped cross section at the outer edge of the engaging groove, and the first roofing material arranged side by side on both sides of the first roofing material. A downwardly substantially U-shaped cover member is fitted so that the bent portion is inscribed, and a fitting piece having both edges of the cover member bent inward is engaged with the fitting groove to form the first member. The upper edge of the slope formed on both sides of the second roofing material is bent into the side of the roofing material to form a fitting groove. The outer edge of the fitting groove extends upward to bend the locking groove,
A bent portion having a substantially S-shaped cross section is formed at an outer edge portion of the locking groove, and the bent portion of the second roof material arranged side by side on the both sides of the second roof material is substantially downwardly directed so as to be inscribed therein. A U-shaped cover member is fitted, and fitting pieces obtained by bending both edges of the cover member inwardly are engaged with the fitting grooves of the second roof material to form second roof materials. In addition, the inclined portion of the first roofing material and the cover member of the first roofing material are set inside, and the inclined portion of the second roofing material and the cover member of the second roofing material are overlapped outward. A structure of a roofing material, wherein longitudinal ends of the first roofing material and the second roofing material are overlapped and connected. 2. A steel plate having an arbitrary length is supplied to a forming device.
The appropriate number of rollers provided on the roller shaft in the molding device
Rolled rollers apply this shape to the steel plate with
And valley molding to obtain roofing material
And the width of each rolling roller can be adjusted freely.
And the width between the rolling rollers can be adjusted freely.
The width of the peaks and valleys that are molded into the roofing material
A method for molding a roofing material, which is arbitrarily changed. 3. An appropriate number of roller shafts in a molding device
The rolling roller over the small-diameter rolling roller with a large diameter is provided, the large-diameter
Rolling roller with multiple peak width change plates
In addition, a plurality of peak width change plates are provided on a small-diameter rolling roller,
After molding the first roofing material, it is installed on a large-diameter rolling roller.
Roller with small diameter
By reducing the valley width change plate provided in the
The plane dimension of the back of the root material is the plane dimension of the n-1th roofing material surface
And the n-th roof adjacent to the rear end
The method for molding a roofing material according to claim 2, wherein the material is molded.