JPS63233153A - Method for forming parapet material in metal thin plate roof waterproof structure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a roof waterproof structure made of thin metal plates such as stainless steel, and more particularly to a method for forming a parapet member covering a parapet.

[Prior Art] In a roof waterproofing structure formed by connecting multiple thin metal plates to each other, the roof is covered with a parallax!・If there is, it takes a lot of time to treat the surrounding area, so various construction methods have been used in the past.

For example, as shown in FIG. 4, adjacent thin metal plates are joined together by seam welding to form a large-area waterproof panel 1, which covers the roof flat area 2 and also covers the edges. There is a construction method that involves bending it as it is (I) so that it follows the rise of parapet 3.

However, this 11 method requires a dedicated large-sized ■(J) processing machine to apply the bending force L to 1, which requires time and effort to install and operate, and is also expensive. There were drawbacks.

Therefore, as shown in FIG. 5, a parapet part material 5 covering the parapet 3 is formed separately from the flat part part material 4 covering the roof flat part 2, and this is arranged along the parapet 1-3. The construction method has been used for a long time. In this construction method, the parapet member 5 is formed by joining together a plurality of thin metal plates, but the flange 6 at the joint portion is generally formed by Yachiyo folding.

“Problems to be Solved by the Invention” However, the above-mentioned conventional general method for forming parapet member members requires Yachiyo folding, which not only requires advanced sheet metal technology but also tends to cause distortion at the creases. Furthermore, there is a problem in that there are many unnecessary parts, such as the folded part 7 and the removed part 8 for forming the flange 6, resulting in high material costs.

The purpose of this invention is to solve such problems.

[Means for Solving the Problems] According to the present invention, a method for forming a parapet member is to bend the edges of a flat metal thin plate at right angles to form a flange, and to bend the flanges of adjacent metal thin plates. This flange overlapping part is seam welded except for the periphery of the bent part of the thin metal plate for forming the rising part, and at the same time, the flange welded part on this rising part and other The feature is that the side flange welded parts are turned in opposite directions, and finally the unwelded part of the flange is seam welded.

Other objects, features and advantages of this invention can be found in the appendix below.
It will become clear from the detailed description along with the drawings.

11 Embodiment" FIG. 1 of the drawings shows the vicinity of a roof parapet 3 on which a parapet I/part member 10 formed according to the present invention is installed, and on the roof flat area 2, Single plate-shaped flat surface material 4 made of multiple thin metal plates such as stainless steel
is laid and joined to the parapet part = 3- material 10.

As understood from Fig. 1, this parapet member 1
0 is formed by joining long thin metal plates 11 in the longitudinal direction, and has a rising part 12 that contacts the rising surface of the parapet 3 and a horizontal part 13 that is seam-welded to the flat panel member 4. are doing. Such a parapet member facing material 10 is formed as follows according to the present invention.

First, a deck-shaped metal thin plate 11 that is a component of the parapet member 10 is prepared, and as shown in FIG. 2, its edge is bent at a substantially right angle to form a flange 14.

Next, the thin metal plates 11 to be joined are arranged,
The opposing flanges 14 are overlapped to make a sound. Metal thin plate 1
1 will be later bent along the longitudinal direction in order to form a standing L-shaped part 12 in contact with the rising surface of the parapet 3, but the flange overlapping part 15 is seam-welded except for the part corresponding to the bent part. .

After a predetermined number of thin metal plates 11 are spliced and put together in this way, the thin metal plates 11 are bent to form a rising portion 12.At the same time as this bending operation, as shown in FIG. The flange welded portion 16 on the water portion IZ and the flange welded portion 17 on the water) P portion 13 are tilted in opposite directions. At this time, a shift occurs between the left and right flanges 14, but the unwelded portions 18 of the flange absorb this shift,
This prevents wrinkles from forming on the flange 14. Incidentally, in order to easily bend the metal thin plate 11, it is preferable to form creases in advance.

Finally, the unwelded portion 18 of the flange is arranged into a substantially straight line, and then seam welding is performed, thereby completing the continuous long parabella 1 to member member 10.

The rose petals 1 to 10 thus formed are as follows:
The seam is welded to the edge of the flat panel member 4 in the same manner as in the prior art (FIG. 1).

I-Effects of the Invention] As described above, according to the present invention, since Yachiyo folding, which requires advanced sheet metal technology, is not used, parapet part facing materials can be easily formed, and waste of folded parts etc. can be avoided. This reduces material costs. Furthermore, unlike Yachiyo folding, there is no forced bending, and the folding work is done in a natural manner, so there is no distortion, good workability, and a shade effect.

Further, by using the method for forming a parapet member panel material according to the present invention, it is possible to reduce the labor and cost of the entire roof waterproofing method.

[Brief explanation of drawings]

FIG. 1 is a perspective view of roof parapeg 1 and its surroundings showing a parapet panel material formed according to the present invention, FIGS. 2 and 3 are explanatory diagrams of the method of forming a parapet panel panel material of the present invention, and FIG. 4 and FIG. 5 are perspective views of the area around a parapet, respectively, showing the conventional waterproofing method for a thin metal sheet roof. In the figure, 2: Roof flat area 3: Parapet 4, 5jL area 1fii material 5. ]-0: Parabed member 6
．． 14: Flange 11: Thin metal plate 12: Rising portion 13. Horizontal portion 15: Flange overlapping portion 16.17: Flange welded portion 18” Flange unwelded portion Patent applicant Toyo Kanetsu Co., Ltd. -8=

Claims (1)

[Scope of Claims] A thin metal roof waterproof structure in which a parapet member is used, in which the rising portion that covers the rising surface of the parapet is bent and joined to the edge of the flat member. Form a flange by bending the edges of the thin metal plates at right angles, overlapping the flanges of adjacent thin metal plates, and forming the overlapping part of the flange, excluding the periphery of the bent part of the metal thin plate for forming the rising part. At the same time as forming the rising portion, the flange welding portion on the rising portion and the flange welding portion on the other side are turned in opposite directions, and the unwelded portion of the flange is seam welded. A method for forming a parapet member in a waterproof thin metal sheet roof structure.