JPH0821037A - Curved envelop body - Google Patents

Abstract

PURPOSE:To most effectively use a starting material to provide an envelope body having high intensity with good workability by fixing a curved building plate, a curved cap member, and a curved gutter which are curved at proper curvatures to a fixing frame. CONSTITUTION:Fitting side parts 7, 7 are formed on both lateral edges of main plates 5, 5, and longitudinally curved at a proper curvature to provide curved building plates Pf, Pf. Curved cap members Pc, Pc and cured gutters Pg, Pg having the same curvature radius of the curved building plates Pf are provided. The curbed gutter Pg has circular bent corner parts 2, 2 swollen up inward and protruded up outward from both lateral side ends of a narrow bottom part 1, and vertical parts 3, 3 formed from their top ends. The curved building plates Pf, the curved cap members Pc, and the curved gutters Pg are fixed to fixing frames 5, 5.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The present invention makes it possible to use the raw material most effectively, and the workability is very good, and it is possible to obtain an enclosure having a very good mechanical strength after the work. It relates to a curved envelope that can be formed.

[0002]

2. Description of the Related Art Conventionally, a metal flat roof,
A lot of enclosures such as walls are constructed, and various types are manufactured, but most of them are fitted type frames by placing a building board with a flat bottom part on the base part. It is fitted and fixed and then the cap material is fitted and fixed. Long gutters are provided between the building boards, and rainwater soaked from the cap material is drained to the outside through the gutters.

[0003]

In the conventional type of enclosure described above, the building board can be satisfactorily constructed without any problems when the ground surface is flat, but the ground surface is curved. However, it is difficult for gutters to form a curved shape in the longitudinal direction, and therefore the drainage structure is complicated when constructing a curved envelope. There was a problem that became.

[0004]

Therefore, as a result of earnest studies to solve the above problems, the inventor has found that the present invention forms fitting side portions at both ends in the width direction of the main plate and appropriately adjusts the longitudinal direction. A curved building plate curved to a curvature, a curved cap material and a curved gutter having a radius of curvature equivalent to that of the curved building plate, and a fixing frame, wherein the curved gutter is Forming a circular arc-shaped bent corner that bulges upward inward from both widthwise ends of the narrow bottom surface and projects upward and outward, and forms a vertical part from the top end of the circular arc-shaped bent corner. With the curved outer structure, the raw material can be used most effectively, and the workability is extremely good, and the mechanical strength after construction is extremely good. A curved outer body having a gutter formed on the bottom Bets can be, is obtained by solving the above problems.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the curved envelope of the present invention will be described with reference to the drawings. First, the curved envelope as shown in FIG. 1 is mainly composed of a curved building board Pf and a curved cap member Pc. , The fixing frame 5 and the curved gutter Pg. The curved building board Pf and the curved cap member Pc can be formed in a curved shape relatively easily in the longitudinal direction. The curved building plate Pf, the curved cap member Pc, and the curved gutter Pg have the same radius of curvature,
More specifically, the radius of curvature is approximately 7 to 8 m or more. In addition, a curved building board Pf and a curved cap material Pc
Has a flat shape (see FIG. 2).

Therefore, the curved gutter Pg, which is particularly difficult to be formed in a curved shape in the longitudinal direction, will be described. As shown in FIGS. 3 and 4, etc., as shown in FIGS. Arc-shaped bent corners 2 and 2 are formed above,
Vertical portions 3, 3 are formed from the upper ends of the arc-shaped bent corner portions 2, 2. The arc-shaped bent corners 2 and 2 of the curved gutter Pg are formed at the corners c formed by the narrow bottom surface 1 and the vertical portions 3 and 3 so as to bulge toward the narrow bottom surface 1 side. It is a thing.

The vertical portions 3 and 3 are formed in a substantially vertical shape with respect to the narrow bottom portion 1, and inward horizontal edges 4 and 4 are provided at the upper ends of the vertical portions 3 and 3. Has been formed. The curved gutter Pg is fixed on the base portion 10 by a fixing frame 5 described later. The curved gutter Pg is formed in a curved shape along the longitudinal direction, and the narrow bottom surface portion 1 has a corrugated surface w. The dimension in the width direction of the narrow bottom surface portion 1 of the curved gutter Pg is defined as the width dimension W _{1 of the} narrow bottom surface portion 1, and the two vertical portions 3, 3 formed at the width direction ends of the narrow bottom surface portion 1 are formed. The size of the space is defined as the facing width W3 of the vertical portions 3 and ₃ (see FIG. 9A).

[0008] opposite width W ₃ Comparing face width W ₃ of the narrow width of the bottom portion 1 W ₁ and both vertical-like portion 3 and 3
Are formed to be slightly larger than the width dimension W ₁ [see FIG. 9 (b)]. Also, the facing width dimension W ₃
Is also the effective width of the curved gutter Pg. In other words, the narrow width dimension W ₁ of the bottom portion 1 and the counter width W ₃ of the two vertical-shaped portions 3, 3 horizontal directions of the arc-shaped bent corner portions 2 (narrow bottom portion 1 and the same plane) Both dimensions W ₂ and W ₂ are different from each other.

Further, when the arc-shaped bent corner 2 is specifically shown, as shown in FIGS. 9B and 9C, the bent bottoms 1 are bent from both side ends in the width direction via the bent pieces 1a. A bulging bent piece 2a bulging inward (toward the center of the narrow bottom surface portion 1) is formed upward. Next, a top bending piece 2b protruding outwardly upward from above the bulging bending piece 2a is formed, and an arcuate bending corner 2 is formed by the top bending piece 2b and the bulging bending piece 2a. is there.

The top bending piece 2b is an arc-shaped bending corner 2
Is a top portion (including a substantially top portion), and vertical portions 3 are formed from the top portion. Here, the bent portion between the narrow bottom surface portion 1 and the arc-shaped bent corner portion 2 is the narrow bottom surface portion 1
It is formed so as to bend toward the upper side of the narrow bottom surface portion 1 without protruding further downward. This is because when a part of the arcuate bent corners 2 and 2 is projected to the back surface side of the narrow bottom part 1, when the narrow bottom part 1 is placed on the base part 10, the arc bent. The corners 2 and 2 cause the narrow bottom surface portion 1 to float above the surface of the base portion 10 and the base portion 1
The stability with respect to 0 deteriorates. In order to prevent such an inconvenience and ensure that the back surface side of the narrow bottom surface portion 1 can always uniformly contact the base portion 10 and obtain stability, the arc-shaped bent corner portions 2 and 2 must be the narrow bottom portion 1. Is formed above (see FIG. 3).

The narrow bottom surface portion 1 is shown in FIG. 9 (a).
As shown in FIG. 5, the width dimension W ₁ including both bending pieces 1a, 1a is set, and the outer ends of the top bending pieces 2b, 2b, which are the tops of the arc-shaped bending corners 2, 2, are set. by forming to be larger than the width W ₁ of the narrow bottom portion 1, face width W ₃ of the two vertical-shaped portions 3, 3 is larger than the width W _1. Thus, since the width dimension W ₁ of the narrow bottom portion 1 is smaller than the counter width W ₃ of the two vertical-shaped portion 3, 3, as shown in FIG. 9 (c), the arc-shaped bent corner 2 The entire length L _{2 of the above} is formed from the predetermined range Lo of the corner portion c before the formation of the arc-shaped bent corner portion 2.

Therefore, the total height H from the narrow bottom surface portion 1 to the top of the vertical portion 3 before the arc-shaped bent corner portion 2 is formed is, as shown in FIG. 9C, the arc-shaped bent corner portion 2. It is possible to make the same height without changing even after the formation. Further, the facing width dimension W 3 of the both vertical portions 3, ₃ is
The same dimension can be maintained before and after forming the arcuate bent corners 2, 2 at both corners c, c. As shown in FIG. 1, the curved gutter Pg has a curved shape in the longitudinal direction, and an outer body such as a roof or a wall having an arch-shaped curved portion can be constructed, It has a radius of curvature ρ (Fig. 8
reference).

Next, the curved building plate Pf is one in which the fitting side portions 7, 7 are formed on both sides of the main plate 6 in the width direction, and is formed in a curved shape along its longitudinal direction ( (See FIG. 5). Further, the curved cap member Pc is formed of the cover portion 8 and the fitted portions 9, 9 and is formed in a curved shape along the longitudinal direction like the curved building board Pf. (See Figure 6). Then, the curved cap member Pc can be fixed to the space between the adjacent curved building plates Pf, Pf in a fitted state. The curved building plate Pf and the curved cap member Pc have a radius of curvature ρ similar to that of the curved gutter Pg (see FIGS. 5 and 6).

The fixing frame 5 is formed of a metal strip plate, and as shown in FIGS. 2 and 7, locking portions 5b, 5b are formed on both sides in the width direction of the fixed bottom portion 5a. And
The curved gutter Pg is mounted on the base portion 10, the fixing frame 5 is further mounted on the base portion 10, and the locking portion 5b is locked to the inward horizontal edge 4 of the curved gutter Pg. Moreover, the fixed bottom portion 5a is fixed by a fastener such as a screw. In this way, first, the curved gutter Pg is arranged and fixed to the base portion 10 by the fixing frame 5.

Next, the curved construction board Pf is disposed between the curved gutters Pg, Pg which are adjacent to each other at an appropriate interval, and the fitting side portions 7, 7 of the curved construction board Pf are locking portions of the fixing frame 5. 5b, 5b are fitted and fixed (see FIG. 3). A heat insulating material h made of glass wool, a foamed resin material or the like may be provided between the main plate 6 and the base portion 10 of the curved building plate Pf. Next, the curved building board P adjacent to and facing the adjacent
The fitting side portions 7 and 7 of f and Pf are fitted to the fitted portions 9 and 9 of the curved cap material Pc, the curved cap material Pc is covered and fixed, and the curved outer body is constructed. It is a thing.

Next, the molding machine A for molding the curved gutter Pg from the plate Po which is a raw material will be described. As shown in FIG. 10, the molding machine A is composed of a first molding section A ₁ and a second molding section A ₂ , and first, in the first molding section A ₁ , from the plate to be molded Po to the bottom section molding section Po. ₁ and the vertical portion molding portions Po ₃ and Po ₃ are formed. The bottom surface forming portion Po ₁ becomes the narrow bottom surface portion 1 when the curved gutter Pg is completed, and both vertical portion forming portions Po ₃ , P ₃
o ₃ is the vertical portions 3, 3. In this first molded portion A ₁ , the arcuate bent corner portions 2 and 2 are not yet formed.

The first forming part A ₁ is provided with a plurality of first to n-th upper and lower forming rolls, and the bottom forming part is formed on the plate Po by the first to n-th upper and lower forming rolls. P
o ₁ and the vertical portion molding portions Po ₃ , Po ₃ are formed. The n-th upper and lower forming rolls are final forming rolls in the first forming portion A _{1 and} have appropriate numerical values. Here, the n-th is the sixth, and the description will be given below by replacing it with a numeral. However, this is for the purpose of embodying the present invention, and therefore the nth upper and lower forming rolls are not necessarily the sixth.
It is not necessary to limit the upper and lower forming rolls to the nth upper and lower forming rolls, and the nth upper and lower forming rolls may be changed accordingly by increasing the number of stages of the upper and lower forming rolls.

First, the first to sixth upper and lower forming rolls are referred to as upper and lower forming rolls 11 to 16, respectively.
As shown in 0, the first to sixth upper and lower forming rolls are arranged from the left side to the right side of the first forming portion A ₁ . The upper and lower forming rolls 11 to 16 are composed of upper rolls 11a to 16a and lower rolls 11b to 16b. The upper and lower roll surfaces are provided so as to always rotate at a constant speed. These upper and lower forming rolls 11 to 16 are axially supported via side plates 17 and 17 and bearings 18 and 18 on both sides of the main body of the first forming portion A ₁ . The upper and lower forming rolls 11 to 16 include an upper gear 19 and a lower gear 20 provided on the roll shaft.
Even if there is a slight change between the upper and lower rolls, the meshed state is always maintained.

The first to sixth upper and lower forming rolls 11 to 16 are interlocked with the side plates 17 and 17 on both sides of the main body by a chain wheel 22 via a variable speed motor and a chain (not shown), or an appropriate number of stages. In some cases, only the upper and lower forming rolls are driven and the other upper and lower forming rolls are in a free state. First, the upper and lower forming rolls 11 of the first forming portion A ₁
To 16 by the inward horizontal edge forming part Po on the plate Po to be formed.
₄ , Po ₄ are formed, and further, the bottom surface molding portion Po ₁ and the vertical portion molding portions Po ₃ , Po ₃ are sequentially formed (see FIGS. 11 and 12).

FIG. 10 shows the step of forming the plate Po to be formed into a desired shape. First, the first and second upper and lower forming rolls 11 and 12 are used to form an inward horizontal edge forming portion on the plate Po. Po ₄ and Po ₄ are formed, and then the bottom surface molding portion Po ₁ and the vertical portion molding portions Po ₃ and Po ₃ are gradually formed in the _third to sixth portions. The shapes of the first and second upper and lower forming rolls 11 and 12 are such that, in the first upper and lower forming rolls, the axially opposite side portions of the upper roll 11a are gradually tapered in a conical shape. The lower roll 11b is formed so as to have gradually larger diameters on both sides in the axial direction, and works to lift up both widthwise ends of the plate Po to be formed.

Further, in the second upper and lower forming rolls, the upper roll 12a has a perfect cylindrical shape, and the lower roll 12
A disk portion having a larger diameter is formed at both axial ends of b, and both sides in the width direction of the plate to be molded Po are vertically bent to complete the forming of the inward horizontal edge forming portions Po ₄ and Po ₄ . The manner in which the inward horizontal edge forming portions Po ₄ and Po ₄ are formed on the plate to be formed Po described above is shown in FIGS. 11A and 11B.
The forming of the inward horizontal edge forming portions Po ₄ , Po ₄ by the first and second upper and lower forming rolls corresponds to and in the forming process diagram of FIG. 10. In addition, the third to fifth upper and lower forming rolls 13 to 15 are shown in FIG.
As shown in (b) and (c), there forms a bottom portion forming part Po ₁ and bottom surface forming portion Po ₁ in the width direction across the vertical-shaped portion forming part Po _3, Po _3, vertical The shaped portions Po ₃ , Po ₃ gradually approach the vertical state from the horizontal state.

In the third to fifth upper and lower forming rolls, as in the case of the first upper and lower forming rolls, both axial sides of the upper forming rolls 13a to 15a are gradually reduced in diameter,
Further, both axial sides of the lower rolls 13b to 15b are formed so that the diameter gradually increases. By the upper and lower forming rolls 13 to 15 having such a shape, the plate Po to be formed is formed.
The bottom part forming part Po ₁ and the vertical part forming parts Po ₃ , Po ₃
And are gradually formed.

The upper and lower forming rolls 13 to 15 are shown in FIG.
When it is shown as 0, it corresponds to. Further, the sixth upper and lower forming rolls 16 at the final stage of the first forming portion A _{1 have} the vertical portion forming portion Po from the both ends in the width direction of the bottom portion forming portion Po _1.
3 and Po ₃ are finished vertically, and the upper roll 16a thereof is formed in the shape of a thin disc wheel, and the upper roll 16a of the thin disc wheel is formed in a vertical portion with the bottom portion forming portion Po _1. By pressing the corner portion c with the forming portion Po ₃ with an appropriate pressing force, the vertical portion forming portions Po ₃ , Po ₃ are formed perpendicular to the bottom surface forming portion Po ₁ .

When the vertical portion forming portion Po ₃ is not a right angle with respect to the bottom portion forming portion Po ₁ but has a slight inclination, the fifth upper and lower forming rolls 15 are formed.
The degree may be the final stage. in this way,
In the first forming part A ₁ , the first to sixth upper and lower forming rolls 1
1 to 16 are attached, and this is shown in FIG.
The molding of the molding target plate Po is performed.
Next, in the second forming portion A ₂ , the corner portions between the bottom surface forming portion Po ₁ and the both vertical portion forming portions Po ₃ , Po ₃ of the plate to be formed Po formed by the first forming portion A ₁ . Arc-shaped bent corners 2 and 2 are formed in c and c.

The second molding part A ₂ is the first molding part A
It is arranged so as to be in the same direction as the direction in which _one molded plate Po is sent out. The arc-shaped bent corners 2, 2 are formed at the corners between the bottom surface forming portion Po ₁ and the both vertical portion forming portions Po ₃ , Po ₃ of the plate Po to be formed, which is delivered from the first forming portion A _1.
The arc-shaped bent corner forming rolls R ₁ and R ₁ that form the arc are provided at positions corresponding to the both corners c and c. The arc-shaped bent corner forming rolls R ₁ and R ₁ are mounted on the frame bodies 23 and 23 of the second forming portion A ₂ , and more specifically, as shown in FIG. The body 23 is provided with arc-shaped bent corner forming rolls R ₁ and R ₁ .

As shown in FIG. 13A, the arc-shaped bent corner forming roll R ₁ is composed of an outer roll portion 24 and an inner roll portion 25, and more specifically, as shown in FIG.
As shown in (b), the outer roll portion 24 and the inner roll portion 25 are formed into a flat cylindrical shape.
A molding bulge 24a ₁ is formed on the molding circumferential side surface 24a. Forming circumferential side surface 25a of the inner roll portion 25
Forming groove 25a ₁ is formed on the forming groove 25a ₁
Is formed so that the molded bulge 24a ₁ of the outer roll portion 24 can be accommodated therein. Further, the lower portion of the forming groove 25a ₁ of the inner roll portion 25 has a circumferential end edge 25 having a substantially arcuate cross section.
a ₂ is formed as, its circumference edge 25a ₂ is to bent the corner portion c of the bottom surface portion forming portion Po ₁ a vertical shaped portion forming portion Po ₃ arcuately.

As shown in FIG. 13, the outer roll portion 24 and the inner roll portion 25 of the arcuate bent corner forming roll R ₁ are provided so that their rotation surfaces are inclined, and specifically, The rotary shaft 24b of the outer roll portion 24 and the rotary shaft 25b of the inner roll portion 25 are provided so as to be slightly inclined from the vertical direction. The arc-shaped bent corner forming rolls R ₁ and R ₁ form the frame bodies 23 and ₂ of the second forming portion A _2.
The arc-shaped bent corners 2 and 2 are simultaneously formed at both corners c and c of the plate to be molded Po which is provided on both sides of the plate 3 and is fed from the first molding part A ₁ .

To describe the forming process, as shown in FIGS. 13 (a) and 13 (b), first, the forming bulge 24a ₁ of the outer roll portion 24 forms the bottom portion below the vertical portion forming portion Po _3. Forming groove 2 of the inner roll portion 25 by pressing the portion Po ₁ side
5a ₁ is a vertical-shaped portion forming portion Po ₃ which is pressed by the forming bulging strip 24a ₁ receiving, under the vertical-shaped portion forming part Po ₃ is a forming bulging strip 24a ₁ and the molding groove line 25a ₁ It is sandwiched to form an arcuate bulge. Here, the second forming portion A ₂ includes the outer roll portions 24, 24 or the inner roll portions 25, 25 constituting the left and right arc-shaped bent corner forming rolls R ₁ , R ₁ because the bottom forming portion Po ₁ has a narrow width. In order to prevent them from overlapping with each other, they are appropriately displaced along the feeding direction and arranged alternately [Fig.
3 (c)].

Further, the peripheral edge 25a of the inner roll portion 25
₂ uses the circular arc shape of the cross section to form the bottom surface forming portion Po ₁
It is possible to press outward the corner portion c between the vertical portion forming portion Po ₃ and the vertical portion forming portion Po ₃ to form a bent portion having a small radius. With the arc-shaped bent corner forming rolls R ₁ and R ₁ , the forming state of the plate Po to be formed has a shape corresponding to that shown in FIG. 10. A support roll 26 is provided below the arc-shaped bent corner forming rolls R ₁ and R ₁ , and the bottom surface forming portion Po ₁ of the plate to be formed Po is placed on the support roll 26 and is long. It is configured to move in the direction. Further, a final forming roll R ₂ is provided as a subsequent stage of the arc-shaped bent corner forming rolls R ₁ and R ₁ .

The final forming roll R ₂ forms a desired curved gutter Pg from the plate Po to be formed, and forms a corrugated surface w on the narrow bottom surface 1 as necessary. The final forming roll R ₂ is an upper final forming roll 27.
a and the lower final forming roll 27b,
The upper final forming roll 27a and the lower final forming roll 27
As an example of b, the corrugated surface 27a is formed on the cylindrical side surface.
₁ and 27b ₂ are formed, and the bottom surface forming portion Po ₁ (here, having the same shape as the narrow bottom surface portion 1) of the plate Po to be formed passes through the final forming roll R ₂ to form the bottom surface forming portion Po. _The corrugated surface w is formed on ₁ .

The final forming roll R ₂ is composed of the frames 23, ₂
3 is configured to be movable in the vertical direction, and may be a type that is free or driven by itself, and its upper final forming roll 27a and lower final forming roll 2
The upper roll supporting portion 28a and the lower roll supporting portion 28b that support 7b are configured to move in the vertical direction so that the radius of curvature of the curved gutter Pg to be formed can be adjusted appropriately.

Specifically, as shown in FIG.
The final forming roll R ₂ of the upper end forming roll 27a and a lower end forming roll 27b arc-shaped bent corner forming rolls of the other passing points of the molded plate Po and R _1, R ₁ and first mold section A
_By forming a step below (or above) the passage point of the plate to be molded Po of the first to sixth upper and lower forming rolls 11 to 16 of ₁ , the curved gutter Pg curved in the longitudinal direction. Can be molded.

Furthermore, and FIG. 15 (b) In the final forming rolls R ₂ of the upper end forming rolls 27a and lower final waveform irregularities on the surface of the forming roll 27b forming surface 27a ₁ and 27b ₂
It is made flat without forming. FIG. 16 is a simplified perspective view of the first molding part A ₁ and the second molding part A ₂ of the molding machine A, in which the plate to be molded Po passes from the first molding part A ₁ to the second molding part A _2. It shows how the curved gutter Pg is gradually formed.

[0034]

According to the first aspect of the present invention, a curved building board Pf having fitting side portions 7, 7 formed at both ends in the width direction of the main plate 6 to bend the longitudinal direction to an appropriate curvature, and the curved building board are provided. Board Pf
The curved cap member Pc and the curved gutter Pg having the same radius of curvature as that of the fixed radius 5 and the fixing frame 5, and the curved gutter Pg is located above both side ends of the narrow bottom portion 1 in the width direction. A curve formed by forming arcuate bent corners 2 and 2 that bulge inward and project upward and outward, and form vertical parts 3 and 3 from the top ends of the arcuate bent corners 2 and 2. By adopting the curved outer body, firstly, although the curved outer enclosure is used in the present invention, the drainage can be improved, and secondly, the curved gutter Pg of the present invention is used for the outer enclosure. It has good workability and is easy to work.
It has various effects such as improved mechanical strength.

To describe the above effect in detail, the curved gutter Pg of the present invention has arc-shaped bent corners 2 and 2 formed at both ends in the width direction of the narrow bottom surface 1, and the arc-shaped bent corners 2 and 2. 2 bulges inward upward from both widthwise ends of the narrow bottom portion 1,
Then, it is formed so as to project upward and outward.

Therefore, since the arcuate bent corners 2 and 2 are formed above the narrow bottom surface portion 1, the narrow bottom surface portion 1 has extremely good adhesion to the base portion 10. Therefore, when constructing an outer body such as a roof or a wall provided with the curved gutter Pg which constitutes the present invention, even if the worker puts on the curved gutter Pg and works, the curved gutter Pg. Deformation due to distortion is less likely to occur, and work efficiency can be improved.

In the curved gutter Pg, the arc-shaped bent corners 2 and 2 and the narrow bottom surface 1 can appropriately absorb the bending, and therefore the curved gutter Pg has a relatively gentle arc-shaped portion. And a curved portion having a relatively sharp curve, the cross-sectional shape is substantially the same at any position in the longitudinal direction of the curved gutter Pg, and each working width is It is possible to make the same in the place of.

Further, since the arcuate bent corners 2 and 2 are formed inwardly upward between the narrow bottom surface portion 1 and the vertical portions 3 and 3, the base portion 10 is substantially circular. Even if it is an arcuate arch shape, the adhesion between the base portion 10 and the narrow bottom portion 1 is good, and the contact between the narrow bottom portion 1 and the base portion 10 can be made uniform at any place. it can. Further, the distortion or the like that occurs when the curved gutter Pg is arranged along the arch-shaped base portion 10 is caused by the arc-shaped bent corner portion 2,
2, so that the deformation due to the distortion can be made almost inconspicuous.

Next, in the second aspect, according to claim 1, wherein the opposing width W ₃ of the curved shape gutter both vertical portion in the Pg 3,3 are larger than the width W ₁ of the narrow bottom portion 1 However, the raw material can be effectively used by forming the curved outer body in which the inward horizontal edges 4 and 4 are formed at the upper ends of the vertical portions 3 and 3.

The above effect will be described in detail. A curved gutter P
The opposing width dimension W ₃ of both vertical portions 3 and 3 of g is shown in FIG.
As shown in, has been greater than the width W ₁ of the narrow bottom portion 1, as described above, the arc-shaped bent corner portions 2 is an inner upward from both widthwise side end of the narrow bottom portion 1 It is formed so as to bulge in the direction and then project outward in the upward direction. That is, by making the width dimension W ₁ of the narrow bottom surface portion 1 smaller than the opposing width dimension W 3 of both vertical portions 3 and ₃ , there is a space for forming both arc-shaped bent corner portions 2 and 2. Therefore, when forming the curved gutter Pg from the plate Po to be formed, therefore, as shown in FIGS. Materials may be unnecessary. Therefore, the raw materials used for forming the building board without the bulging body (for the purpose of reinforcement, etc.) and the curved gutter Pg in the present invention need only be of substantially the same size, and the raw materials are effective. Can be used for

Next, in a third aspect of the present invention, in the first aspect, the curved outer circumference is formed by forming the narrow bottom surface portion 1 of the curved gutter Pg as a corrugated surface w having a corrugated cross section along the longitudinal direction. By forming the body, the mechanical strength of the curved gutter Pg can be improved. That is, the corrugated surface w is formed so that the narrow bottom surface portion 1 has a corrugated cross section along the longitudinal direction.
By forming the, the cross-sectional shape along the longitudinal direction of the narrow bottom surface portion 1 is such that irregularities are repeated in a substantially flat shape, increasing the cross-sectional coefficient of the narrow bottom surface portion 1 and improving the mechanical strength. Besides, there is an advantage that the corrugated surface w portion plays a decorative role to improve the appearance.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a vertical sectional front view of the present invention.

FIG. 3 is an enlarged sectional view of a main part of the present invention.

FIG. 4 is a perspective view of a curved gutter.

FIG. 5 is a perspective view of a curved building board.

FIG. 6 is a perspective view of a curved cap member.

FIG. 7 is a perspective view of an essential part of a curved gutter and a fixing frame.

FIG. 8 is a vertical sectional side view of the curved gutter.

FIG. 9A is a vertical sectional front view of a curved gutter, and FIG. 9B is a vertical sectional front view of a curved gutter centered around an arc-shaped bent corner portion. Front view in section

FIG. 10 is a schematic view showing a molding machine and its molding state.

FIG. 11A is a schematic view of a first upper and lower part forming roll, and FIG. 11B is a schematic view showing a part of a second upper and lower part forming roll.

FIG. 12 (a) is a schematic view of a third upper / lower forming roller (b) is a schematic view showing a part of a fourth upper / lower forming roller (c) is a part of a fifth upper / lower forming roller. Schematic diagram

13A is a cross-sectional view of an arc-shaped bent corner forming roll, and FIG. 13B is an arc-shaped bent corner forming roll formed between a bottom surface forming portion and a vertical-shaped forming portion. Schematic diagram showing how to form

FIG. 14A is a front view showing an embodiment of a final forming roll, and FIG. 14B is a schematic view showing a state in which a corrugated surface is formed by the final forming roll.

FIG. 15 (a) is a schematic view showing formation of a curved gutter, and FIG. 15 (b) is a schematic view showing formation of a curved gutter having no corrugated surface.

FIG. 16 is a schematic perspective view showing an embodiment of a first molding portion and a second molding portion.

[Explanation of symbols]

1 ... Narrow bottom part 2 ... Arc-shaped bent corner part 3 ... Vertical part 5 ... Fixing frame 6 ... Main plate 7 ... Fitting side part Pf ... Curved construction plate Pc ... Curved cap material Pg ... Curved gutter W ₁ … Width dimension W ₃ … Opposing width dimension w… Corrugated surface

Claims (3)

[Claims] 1. A curved building plate in which fitting side portions are formed at both ends in the width direction of a main plate and the longitudinal direction is curved to an appropriate curvature, and a radius of curvature equivalent to the radius of curvature of the curved building plate. A curved cap member and a curved gutter, and a fixing frame, wherein the curved gutter bulges upward inward from both widthwise ends of the narrow bottom portion and protrudes outward outward. A curved envelope, wherein an arc-shaped bent corner is formed, and a vertical portion is formed from a top end of the arc-shaped bent corner. 2. The opposing width dimension of both vertical portions of the curved gutter is larger than the width dimension of the narrow bottom portion, and an inward horizontal edge is formed at an upper end of both vertical portions. A curved outer body characterized by becoming. 3. The curved envelope according to claim 1, wherein the narrow bottom portion of the curved gutter is formed as a corrugated surface having a corrugated cross section along the longitudinal direction.