JPH0433302Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a metal roofing material used for dome roofs and circular roofs.

[Conventional technology]

As shown in FIGS. 9 and 10, a metal roofing material 1 used for a dome roof or a circular roof consists of a long main plate portion 2 having different widths at both ends in the longitudinal direction, and rising up from both sides of the main plate portion 2. It is composed of rising plate parts 3 and 4 for joining.

The above-mentioned roof shows a waterproof roof covered with metal roofing material 1 made of stainless steel or titanium, and these metal roofing materials 1 are fixed to a main building material, etc. not shown in the figure, as shown in Fig. 10. One rising board part 4 for joining is spot welded W ₁ to the hanger 11..., and this rising board part 4 for joining is connected to the other rising board part 3 for joining of the metal roofing material 1 arranged adjacently. They are usually joined by seam welding _W2 . Although not shown in the drawings, by using a painted steel plate or the like as the metal roofing material 1, the rising plate parts 3 and 4 for joining of the adjacent metal roofs 1 and 1 are simply connected to each other via hangers without welding. They may also be joined by tightening.

[Problem that the invention attempts to solve]

Dome roofs and circular roofs as described above are often used in large-scale buildings such as gymnasiums and theaters, and the metal roofing material 1 used for these has a width of 25 mm on the width side of the main plate 2, for example. ~30cm, wide side width 40~50
It is a long piece with a length of about 20,000 cm.

In order to absorb this strain on the roofing material, it is necessary to form an uneven shape on the main plate portion 2 such as a continuous waveform or an emboss for strain absorption.

By the way, conventionally, as shown in FIG.
After the material metal plate 5 is cut into a tapered shape, an uneven shape is formed on the entire surface of the tapered plate material 6 using a roll forming machine, or after forming an uneven shape on the entire surface of the material metal plate 5 using a roll forming machine. ,
The metal roofing board 1 is cut into a tapered shape, and then both edges of the tapered board 6 are bent upward using a roll forming machine to form the joining rising board parts 3 and 4. was manufacturing.

For this reason, unevenness due to the uneven shape in the previous process remains on the joining rising plate parts 3 and 4, and due to this unevenness, rattling occurs when the seam welding machine runs, causing damage to the electrode. Therefore, it was not possible to operate the seam welding machine at high speed and perform the joining work efficiently. In addition, even in the case of joining by chujime, the unevenness left on the joining upright board parts 3 and 4 acts as resistance to the running of the kajime machine, so the work speed tends to be slower than with a typical chujime folded roof. It was hot.

In addition, regardless of whether seam welding or clasp tightening is used, the unevenness remaining on the joining upright plates 3 and 4 will result in incomplete joining by seam welding or clasp tightening, resulting in poor water-stopping properties of the joint. Something happened.

An object of the present invention is to solve the problems of the conventional example described above.

[Means for solving problems]

The technical measures taken by the present invention to achieve the above objectives are as follows. That is, the feature of the present invention is that, in a metal roofing material consisting of a long main plate part having different widths at both ends in the longitudinal direction and rising board parts for joining rising from both sides of the main board, the rising board part for joining is The main plate is smooth, and a rectangular uneven region is formed in the shape of a step along the longitudinal direction of the main plate, extending substantially over the entire width thereof.

[Effect]

According to the above configuration, since the uneven shape is formed in a plurality of rectangular regions whose entire sides are step-like, the shape of the main plate is narrow at one end in the longitudinal direction and wide at the other end. Despite the tapered shape, the roll molding machine can mold the uneven shape over a wide range of the main plate.
Therefore, distortion absorption due to the uneven shape is reliable.
However, since there are no uneven shapes formed in areas other than the rectangular area, and no unevenness occurs on the rising plate for joining, joining work by seam welding and fastening can be done easily and quickly, and it also has good water-stopping properties. It will be possible to do so.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

Figures 1 and 2 show metal roofing material 1 according to the present invention.
shows. 2 is a long main plate having a length of approximately 2000 cm, and the width l at one end in the longitudinal direction is approximately 26 cm.
cm, and the width L at the other end is set to approximately 43 cm.
Smooth rising plate parts 3 and 4 for joining are bent and formed on both sides of the main plate part 2.

The main plate part 2 has rectangular uneven regions A, B, and C formed in a step-like manner along its longitudinal direction and extending substantially over the entire width thereof (see FIG. 3).

That is, the main plate part 2 has both sides a, a, b, b, c, and c parallel to the longitudinal direction of the main plate part 2, as schematically shown in FIG. A plurality of rectangular shapes (three in the drawing, but two may also be used) each having a rectangular shape and having a narrower width on the side of the main plate 2 so that both sides of the whole have a stepped shape. , three or more rectangular areas may be provided, and these rectangular areas are provided with uneven shapes for absorbing strain (specifically, as shown in the figure,
It has a continuous waveform having peaks and troughs parallel to the longitudinal direction of the main plate portion 2. ) to form the uneven area A,
They were formed at B and C.

Next, a method for manufacturing the metal roofing material 1 having the above structure will be explained.

As shown in FIGS. 4A and 4B, a metal plate 5 made of stainless steel or titanium of a predetermined width is cut into a tapered shape using broken lines as cuts, and these tapered plates 6 are put through a roll forming machine to form a fourth As shown in Figure C, both side edges are bent upward to produce a primary molded product 7 consisting of the joining upright plate parts 3 and 4 and the flat main plate part 2.

Next, the above-mentioned primary molded product 7 is applied to another roll molding machine to form unevenness (continuous waveform) on the main plate portion 2 to form the above-mentioned rectangular uneven regions A, B, and C.

That is, as shown in Fig. 5 A, B, C and Fig. 6 A, B, C, the rectangular uneven regions A, B, C
Roller pairs 8, 8, 9, 9, 10, 10 corresponding to
are provided in this order at predetermined intervals along the moving direction (indicated by the arrow) of the primary molded product 7. The circumferential surface of each pair of rollers 8, 8, 9, 9, 10, 10 is formed with concave and convex portions that have a continuous wave shape in the axial direction and that engage with each other at the top and bottom.

As shown in FIG. 5A and FIG. 6A, while rotating the roller pairs 8, 8, 9, 9, 10, and 10 in the direction of the arrow, the primary molded product 7 is rolled from the wide end. It is passed through the roller pairs 8, 8, 9, 9, 10, and 10, and first, the uneven area C is formed by forming unevenness only in the rectangular area with the largest width. When the uneven shape of the area C is molded, it is detected by an appropriate detection means, and a lifting device (not shown) is driven based on the detection result, and the roller pair 8, 8 corresponding to the uneven area C is moved. Raise the upper roller 8.

Next, as shown in FIG. 5B and FIG. 6B, the uneven shape of the uneven region B is formed by roller pairs 9, 9, 10, and 10. When the uneven shape of the uneven area B is molded, this is detected by a similar detection means, and the upper roller 9 of the roller pair 9, 9 corresponding to the uneven area B is raised by a lifting drive device (not shown). The detection means may be one that detects when the primary molded product 7 has reached a predetermined position by kicking a limit switch at the tip of the primary molded product 7, and detects the luminous flux irradiated from the emitter to the receiver. It may be configured to detect that the primary molded product 7 has reached a predetermined position by blocking the primary molded product 7.

Thereafter, as shown in FIGS. 5(c) and 6(c), the uneven shape of the narrowest uneven area A is formed using a pair of short rollers 10, 10.

In the above embodiment, the metal roofing material 1 has a shape in which the left and right joining rising plate parts 3 and 4 are inclined at equal angles in opposite directions with respect to the longitudinal direction of the main plate part 2. The sides a, a, b, b, c, and c of the rectangular uneven areas A, B, and C each have a stepped shape as a whole, but in the present invention, as shown in FIG. It is also possible to provide the metal roofing material 1 in such a shape that a, b, and c are parallel to the longitudinal direction of the main plate portion 2, and only the other sides a, b, and c have a stepped shape as a whole.

FIG. 8 shows another embodiment of the invention. This embodiment is characterized in that the uneven shape in each of the uneven regions A, B, and C is a continuous waveform in which peaks and valleys perpendicular to the longitudinal direction of the main plate portion 2 are continuous. In this embodiment, as a pair of rollers for forming the metal roofing material 1, rollers having a continuous wave-shaped uneven portion consisting of peaks and valleys parallel to the axial direction on the circumferential surface are used. become. Other manufacturing methods are the same as in the previous example.

According to this embodiment, in addition to the same effects as those of the previous embodiment, there is an advantage that the metal roofing material 1 can be easily curved along the curvature of the dome roof.

Note that the uneven shape formed in each of the uneven regions A, B, and C may be, for example, an embossing. Furthermore, in each of the above embodiments, the present invention has been explained by taking as an example the metal roofing material 1 in which the joining rising plate parts 3 and 4 are seam welded. The same can be applied to the metal roofing material 1 in which the metal roofing material 1 is joined by fastening.

[Effect of idea]

Since the present invention has the above-described configuration, it can achieve the following effects.

Roofing materials with uneven shapes for strain absorption over a wide range of the main plate can be manufactured efficiently using a roll forming machine, and by increasing the number of rolls, smooth areas that occur outside the uneven areas of the main plate can be manufactured efficiently. It is possible to make the surface area smaller and expand the uneven area.

Since the uneven shape for strain absorption can be molded over a wide range of the main plate part, the distortion can be reliably absorbed by the uneven shape. Since there are no irregularities on the surface, there is no rattling or irregular resistance when the seam welding machine or clasp tightening machine runs, and joining work by seam welding or clasp tightening can be done easily and quickly, with good water-tightness. be.

[Brief explanation of the drawing]

Figures 1 to 6 A, B, and C show one embodiment of the present invention; Figure 1 is a perspective view of a metal roofing material according to the present invention, and Figure 2 is a perspective view of the main parts of the metal roofing material. Figures 3A and 3B are plan views of the metal roofing material with its overall length reduced and schematically shown in order to explain the structure of the metal roofing material of the present invention, and Figures 4A, 2B, and 3B are , Fig. 5 A, B, and C, and Fig. 6 A, B, and C are explanatory diagrams of the method for manufacturing a metal roofing material according to the present invention, respectively. 7th
8 are plan views of metal roofing materials showing other embodiments of the present invention. Figures 9 to 11 A,
B and C are explanatory diagrams of conventional examples. 1...Metal roofing material, 2...Main plate part, 3, 4...
... Rising plate part for joining, A, B, C... uneven areas,
l, L...width.

Claims (1)

[Scope of utility model registration request] In a metal roofing material consisting of a long main plate part with different widths at both ends in the longitudinal direction and rising board parts for joining rising from both sides of the main board part, the rising board part for joining is smooth, and the main board part has a , A metal roofing material characterized in that a rectangular uneven region extending substantially over the entire width thereof is formed in a step-like manner along its longitudinal direction.