JP2726678B2 - Molded metal sheet for building material and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention proposes a formed metal plate used as a building material for a roof, an outer wall, an inner wall, and the like, and an advantageous production method thereof by a roll forming method. .

[Conventional technology]

Conventionally, as this type of formed metal sheet, for example,
As described in Japanese Patent Publication No. 105821 and Japanese Patent Application Laid-Open No. Sho 56-46052, those molded into a tiled roof-like external shape having steps which are spaced at predetermined intervals in the length direction by press molding, A technique is known in which a step portion is formed using a so-called stepped roll as described in JP-A-55-152247, and is formed into a tiled roof-like appearance having a step portion only by roll forming.

The former conventional roof-formed metal sheet manufactured through the above-described press-forming process is deep-drawn to obtain a desired shape.As a result, the thickness of the metal sheet is locally reduced during press-forming. Breakage results in low yield, coating film cracking, galvanizing cracking, etc., causing the performance of the surface-treated steel sheet to be significantly reduced, workability due to the use of a press machine, equipment costs, and installation space problems. there were.

The latter conventional molded metal sheet formed only by the above-described roll molding has a poor fitting function with an adjacent metal sheet when roofing, and it is necessary to provide a sufficient waterproof seal at the overlapped portion, When the metal plate is fixed, there is a problem that holes are formed in the metal plate, which causes water leakage.

[Problems to be solved by the invention]

The problem to be solved by the present invention is to have a shape that can be formed only by roll forming, the shape has a high fitting function with another metal plate that should be adjacent, and also fixes the metal plate. It is an object of the present invention to provide a molded metal sheet for building materials configured such that it is not necessary to make a hole in the metal sheet.

On the other hand, the present invention does not require press molding in the molding process at all, so that the entire process can be covered only by the roll molding process, and the S
An object of the present invention is to realize a roll step forming technique capable of simultaneously adjusting a shrinkage allowance caused by forming a step portion or the like in a longitudinal direction of a formed plate having a U-shaped cross section.

[Means for solving the problem]

The above-mentioned problem is the configuration of a formed metal plate whose main points are the following items: a flat metal plate (1) is formed by folding both side edges (2) in the longitudinal direction of the flat metal plate (1) to opposite sides to form a side surface (3); And a folded piece (4) have an S-shaped cross-sectional shape provided on both side edges thereof, and a flat portion (5) between both side surfaces thereof has step portions or grooves at predetermined intervals in the length direction. (7), (8) for adjusting the reduction in length due to this step or groove
Is advantageously provided on the side surface (3) and the folded piece (4).

In addition, the above-mentioned object is to form a metal sheet by the following forming process, that is, by forming a plurality of S-shaped forming rolls arranged sequentially, the both side edges in the longitudinal direction of a flat metal plate. Then, they are folded back to the opposite sides to form an S-shaped cross-sectional shape having a side surface and a folded piece, and then, with a stepped roll, at predetermined intervals in the length direction of the plane portion between the molded side surfaces, Processing to form a step or groove, and an adjusting roll provided at the shaft end of the step roll, unevenness for adjusting the reduction in length by providing a step or groove on the side surface and the folded piece. The method for manufacturing a metal sheet for building material, characterized in that the forming is performed simultaneously or sequentially, can be advantageously realized.

(Operation)

According to the metal sheet for forming a building material of the present invention, the above-described configuration eliminates the need for drawing by pressing,
It can be formed only by the roll forming step, and the formed metal plates adjacent to each other are fitted with each other by the folded pieces provided on both side edges, so that the waterproofness is high, and the metal plate is fixed without making a hole. be able to.

Further, according to the method for manufacturing a formed metal sheet according to the present invention, one is formed by continuous unevenness forming with a stepped roll in the longitudinal direction of the formed metal sheet having an S-shaped cross section in which one is an engaging portion and the other is a locking portion. Advantageously, the problems that occur when molding the unevenness (steps, grooves) to be formed can be solved. In other words, the end surface treatment of the shrinkage margin inevitably occurring on the side surface and the folded piece portion of the S-shaped formed metal plate is performed simultaneously or simultaneously with the step forming by the adjusting roll integrally provided at the roll shaft end of the step roll. Therefore, warpage and downward warpage due to inadequate end face treatment of the prior art do not occur, and the molding yield of the product can be significantly improved.

〔Example〕

5 to 14 show various embodiments of the formed metal sheet according to the present invention.

FIG. 5 shows a modification of the formed metal plate shown in FIG. 1. In the roll forming, the stepped upper and lower rolls and the adjusting roll are symmetrically fitted to each other so that the unevenness 8 of the folded piece 4 is a flat portion. 5 shows an example provided at the same interval as the stepped portion 6 and shifted by a half pitch.

FIG. 6 shows an example in which the step pitch of the upper and lower adjustment rolls is reduced, and the pitch of the unevenness 8 in the folded piece 4 in the example of FIG. 5 is reduced.

FIG. 7 shows an example in which, in the example of FIG. 6, the steps of the stepped upper and lower rolls are fitted with oblique males and females, and the steps 6 are provided obliquely.

FIG. 8 shows an example in which the stepped upper and lower rolls are partially fitted to each other, and the flat portions 5 are provided with the grooves 9 instead of the step portions 6.

FIG. 9 shows an example in which the example shown in FIG. 6 is formed in two steps.

 FIG. 10 shows an example in which an inclined step 10 is provided on the plane portion 5.

FIG. 11 shows an example in which a step 11 which is vertical and is inclined on the plane portion 5 is provided.

FIG. 12 shows an example in which a diamond-shaped step 12 is provided on the plane portion 5 of a vertical type.

FIG. 13 shows an example in which vertical and horizontal grooves 13 and 14 are provided in the plane portion 5 so as to be used as a wall panel and a ceiling panel.

FIG. 14 shows horizontal grooves 14 on both sides of the vertical grooves 13 in FIG.
Are shifted by a half pitch.

Next, a method for manufacturing a formed metal sheet according to the present invention will be described.

First, in the first step, in order to form the band-shaped metal plate 1 into an S-shaped cross-sectional shape having the locking and engaging folded pieces 4, the necessary number of steps of the roll forming machine shown in FIG.
The plate is passed through an S-shaped forming roll 15 of up to six stages from an uncoiler 16 through a pinch roll 17 and a shear 18 to form an S-shaped roll.

Next, in the second step, the sixteenth (a), (b) and
17 is passed between the upper and lower stepped rolls 20 and 21 which are fitted to the male and female by the unevenness shown in FIG. 17, and the step 6 is formed in the plane portion 5 at a position spaced at equal intervals in the length direction. At this time, the flat portion 5 that has been passed is formed into a concave and convex shape at regular intervals in the length direction in a range in contact with the upper and lower roll widths by the stepped rolls 20 and 21. By this bending, the length of the plane portion 5 is reduced by the amount of the bending. In order to reduce the length of the side surface 3 and the folded piece 4 corresponding to this reduction, a stepped roll is used.
Utilizing small-diameter adjusting rolls 22, 23 protruding from one side of the 20, 21 roll cylinders, that is, the end of the roll shaft. The adjusting roll portions 22 and 23 are provided with irregularities at appropriate intervals,
The four folded portions of the passing plate material are sandwiched between the roll cylinders of the stepped rolls 20 and 21 and the adjusting rolls 22 and 23 and are passed through while pressing each other, so that the unevenness 7 and 8 are formed on the folded portion 4. As a result, the folded piece 4 has the same shrinkage allowance as the plane portion 5.

At this time, the side surface 3 utilizes the pressing of the upper and lower stepped rolls 20, 21 and the adjusting rolls 22, 23, that is, the concave portion at the time of the concave and convex processing is different from the convex portion in height difference h ₃ as shown in FIG. It is strongly pressed, and the pressed portion protrudes to the entire surface (see FIGS. 19, W7 and W8). Developed length of the wall surface hypotenuse of this protrusion is likewise a l ₂ stepped flat surfaces. Therefore, the working width is Shrink one by one.

As a result, the side surface 3, the folded piece 4, and the flat portion 5 are formed so as to have the same shrinkage allowance.
Or, it becomes a value close to it and becomes a stable shape. In addition, the radius of curvature of the initial S-shaped engaging portion and engaging portion is naturally reduced due to the pressing of the stepped rolls 20 and 21 and the adjusting rolls 22 and 23.

As shown in FIG. 15, the step of preventing the locking portion and the engaging portion from warping occurs at the same time as the step of forming the step of the flat portion 5, and is instantaneous if performed simultaneously with the step of forming the step of the flat portion. The molded product is completed. The stepped rolls shown in FIGS. 16 to 17 have an integrated warp prevention function and are composed of an upper stepped roll body 20, a lower stepped roll body 21, an upper adjustment roll section 22, and a lower adjustment roll section 23. An S-shaped metal plate between the upper and lower rolls
The sheet is passed in a state as shown in FIG. 2B, and is formed so as to be formed when the sheet passes between the rolls at the same time.

The above description has described only the case where the formation of the step portion or the groove and the formation of the concave and convex portions on the side surface and the folded piece are simultaneously formed by a pair of stepped rolls, but it is essential that these processes be performed simultaneously. Instead of the processing step, it may be performed in a sequential molding method.

〔The invention's effect〕

 The effects of the present invention are listed below.

(1) Since the material is formed in the bending process without narrowing the material, material cracking, plating cracking, and coating film cracking can be prevented.

(2) Since it can be formed by a rotating roll similar to the roll forming, it can be continuously and smoothly formed by an integrated forming machine, so that productivity can be significantly improved.

(3) It is advantageous in equipment cost, space, and maintenance cost as compared with the separation type.

(4) It is possible to manufacture a large format having a fitting size of two or more steps.

(5) It is possible to form a design that can be easily converted into a tile simply by changing the stepped roll as a lightweight, long, easily workable and inexpensive metal plate.

(6) A shape having a design property and a fitting function can be easily formed, and the waterproof property can be improved.

(7) Since a long material having a design property can be formed, a connecting portion is unnecessary, and there is no need to worry about waterproofing.

(8) The main body can be fixed by hooking the hook on the turn-back portion without making a hole in the main body, thereby eliminating the cause of water leakage.

(9) The roofs do not need to overlap the same shape of mountains and valleys, and can be arranged freely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a metal plate according to the present invention, FIG. 2 is a plan view of the metal plate shown in FIG. 1, and FIG. 3 is an arrow on line III-III in FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2, FIGS. 5 to 14 are perspective views showing various embodiments of the metal plate according to the present invention, FIG. 15 is a schematic diagram showing one embodiment of an apparatus for roll forming a metal plate according to the present invention, FIGS. 16 (a) and (b) are a plan view and a side view of a stepped roll, and FIG. 16 is a front view of the stepped roll shown in FIG. 16, FIG. 18 is a front view of a step portion of the formed metal plate, and FIG. 19 is an explanatory view showing a state where a plane portion protrudes. 1 ... metal plate, 2 ... side edge, 3 ... side surface, 4 ... folded piece, 5 ... plane portion, 6 ... stepped portion, 7, 8 ... unevenness.

Claims (2)

(57) [Claims] 1. A flat metal plate (1) having its lengthwise side edges (2) folded back to opposite sides to have side surfaces (3) and folded pieces (4) at the side edges, respectively. (5) Steps or grooves are provided at predetermined intervals in the length direction of the plane portion between both side surfaces, and the length is reduced by the steps or grooves. A molded metal sheet for building material, characterized in that irregularities (7) and (8) for adjusting the amount are provided on the side surface (3) and the folded piece (4). 2. An S-shape having a side surface and a folded piece formed by folding a plurality of S-shaped forming rolls sequentially arranged on both side edges in the longitudinal direction of a flat metal plate to opposite sides thereof, respectively. Forming a step or a groove in the length direction of the plane portion between the forming side surfaces at a predetermined interval by a stepped roll, and providing the stepped roll with an axial end. A forming metal plate for a building material, characterized in that, by means of the adjusting roll portion, a process of forming irregularities for adjusting a reduction in length by providing a step or a groove on the side surface and the folded piece is performed simultaneously or sequentially. Manufacturing method.