JP2001269718A - Method and apparatus for forming folded roof material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a waved roof of a complicated shape, etc., with a folded roof material 1 of a roughly trapezoidal shape in a cross sectional shape which has inclined face parts 3, 3 bent upward from left/right ends of a valley part 2 and a joining part 4 bent laterally outward from an upper end of respective inclined faces 3. SOLUTION: In a first waving process, a waved shape 11 of a small waved shape is formed to a section corresponding to a joining part of a stock 9. In a joining part forming process, seam parts 4a, 4b are formed to a section corresponding to a joining part of a stock 9. In a second waving process, the waved shape 11 is formed to the section corresponding to the inclined face parts 3, 3 of the stock 9. In a trapezoidal shape forming process E, the stock 9 is bent to a roughly trapezoidal shape in a cross sectional shape. In a third waving process, the waved shape is formed 11 to the valley part 2 of the stock 9. In a bending process, the stock 9 of a roughly trapezoidal shape in cross sectional shape is bent in the up/down direction or in the left/right direction so as to form a waved shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a longitudinally curved folded roof material and an apparatus for forming the folded roof material, which is used for roofing a wave-shaped roof.

[0002]

2. Description of the Related Art Folded roof materials having a long trapezoidal cross section in which a slope is bent upward from left and right ends of a valley and joints are bent outward and laterally from an upper end of each slope. In Japanese Patent Application Laid-Open No. 5-154568, bending this upward or downward over the longitudinal direction is disclosed in
JP-A-5-161921, JP-A-10-1750
No. 20, JP-A-10-249442 and the like. In those publications, one or two of the valleys, the slopes, and the joints are provided with small ripples running in the left-right direction so as to be continuous at predetermined intervals in the longitudinal direction. is there. As a result, even if the folded roof material is curved upward or downward, wrinkling and peeling of the paint are unlikely to occur.

[0003]

SUMMARY OF THE INVENTION In a conventional molding apparatus,
Only folded roof material that curves upward or downward can be obtained,
This was only able to form a dome-shaped roof with a simple shape, and I was dissatisfied with the inability to cope with diversifying building designs. In addition, the joints at the upper left and right ends have a predetermined shape for joining adjacent folded roof materials, but it is difficult to form a wave at the joint after forming the shape of the joint. .

Accordingly, an object of the present invention is to provide a folded roof material that can form a wave roof having a complicated shape and can cope with various architectural designs.

[0005]

The folded roofing material 1 to which the present invention is applied has a valley 2 and a valley 2 as shown in FIG.
Are formed in a substantially trapezoidal cross-section having a pair of left and right slopes 3 bent upward from the left and right ends of the pair, and a joint 4 bent laterally outward from the upper end of each slope 3. In the valley portion 2, the slope portion 3, and the joint portion 4, small ripples 11 running in the left-right direction are provided at predetermined intervals in the longitudinal direction so that the irregularities are continuous. The present invention relates to a forming method for forming the folded roof material 1, wherein the corrugations 11 are formed on both left and right edges of the strip-shaped material 9 and at a portion corresponding to the joint 4. A first corrugating step B to be performed and a joining section forming step C for forming the joining sections 4 into predetermined shapes at portions corresponding to the left and right joining sections 4 of the raw material 9.
And a second corrugation step D for forming the ripples 11 in a portion closer to the center of the material 9 than a portion corresponding to the left and right joints 4 and corresponding to the slope 3. Is bent into a substantially trapezoidal cross section to form a valley portion 2, a slope portion 3, and a joint portion 4. A third corrugation step F for forming the material 11 and a material 9 having a substantially trapezoidal cross section,
The folding roof material 1 is formed into a wave shape through a bending process G for bending in the vertical direction or the horizontal direction in order. In the preceding bending step G, the material 9 can be bent while being supported by the support roller 15.

Further, the forming apparatus of the present invention is a forming apparatus for forming the folded roof material 1, wherein the left and right edges of the strip-shaped material 9 correspond to the joints 4. , A first corrugating roller 10 for forming the corrugation 11, and a material 9
At the portions corresponding to the right and left joints 4 of the joint forming roller group n for forming the joints 4 in a predetermined shape, respectively.
A second corrugating roller 12 for forming the wave 11 on a portion closer to the center of the material 9 than a portion corresponding to the left and right joints 4 and corresponding to the slope portion 3; Is bent into a substantially trapezoidal cross section to form a trapezoidal forming roller group N that forms a valley portion 2, a slope portion 3, and a joining portion 4, and the valley portion 2 of the material 9 that is bent into a substantially trapezoidal cross section. A third corrugating roller 13 for forming the eye 11 and a bending roller 14 for bending the material 9 having a substantially trapezoidal cross section in the vertical or horizontal direction are arranged in this order.
Are arranged so as to be adjustable in the vertical and horizontal directions with respect to the material 9. At this time, the third corrugating roller 1
A support roller 15 that supports the valley 2 of the material 9 can be disposed between the bending roller 3 and the bending roller 14. The joint forming roller group n is formed of, for example, about six-stage joint forming rollers, and the trapezoidal forming roller group N is formed of, for example, about 14-step trapezoidal forming rollers. The number of rollers constituting N increases or decreases according to the molding shape, the thickness of the material 9, and the like.

[0007]

According to the present invention, small waves 11 are formed in the valleys 2, the slopes 3, and the joints 4 prior to the bending step G. Even if it is formed by bending in either the vertical direction or the horizontal direction,
The material 9 can be prevented from being wrinkled or peeling off of the coating, and the material 9 can be bent into a good finished state. As a result, the material 9 can be curved into a wave shape waving in the vertical direction and the horizontal direction over the longitudinal direction, and can appropriately cope with diversified building designs such as a wave roof having a complicated shape.

[0008] Further, in forming the corrugation 11 in the joint 4, the material 9 is bent and the joint shape of the joint 4 (the goby 4
a, 4b, etc.) may be completed, and then the ripples 11 may be formed at the joints 4. However, in this case, the ripples 11 are formed at the joints 4 due to the joining shape of the joints 4 and the like. It becomes difficult to do. For this reason, in the present invention, prior to the joint forming step C, the corrugation 11 is formed in advance in a portion corresponding to the joint 4 of the raw material 9, so that the joint shape or the like does not hinder the joint 4. Can be easily formed in a portion corresponding to the above.

When the raw material 9 is bent while the raw material 9 is supported by the support roller 15, a bending process with a small bending radius can be performed, and it is possible to more appropriately cope with diversified building designs.

[0010]

1 and 2 show a method and an apparatus for forming a folded roof material according to the present invention. As shown in FIG. 3, the folded roof material 1 has a substantially trapezoidal cross section as a whole, and has a valley portion 2 and a pair of left and right slope portions 3.3 bent upward from left and right ends of the valley portion 2. And a joining portion 4 bent from the upper end of each slope portion 3 toward the lateral outside. At the left and right edges of the joints 4, there are provided upward hook-shaped goby parts 4 a and 4 b for joining the folded roof materials 1 to each other. The interval between the upper ends of the pair of slopes 3 is, for example, 400 mm, and the vertical height from the inner surface of the valley 2 to the upper end of the slope 3 is, for example, 200 mm.
Is set to

In FIG. 1, a folded roof material 1 is formed from a material cutting step A, a first corrugating step B, a joint forming step C, a second corrugating step D, a trapezoidal shape forming step E, and a After the third corrugating step F and the curving step G, it is curved into a wave shape. That is, in the material cutting step A, the uncoiler 5
The metal web wound in a roll is fed by a feed roller 6 and cut by a shear 7 at a length of, for example, 20 to 30 m, and a strip-shaped material 9 is supplied to the next step B. As the metal web, a conventionally known plated steel sheet, a steel sheet coated on both front and back surfaces thereof, or a steel sheet having a foamed resin-like sound-insulating or heat-insulating sheet of 2 mm or more attached or adhered thereto is used. The material 9 may be cut into a predetermined length in advance. In this case, the material cutting step A is omitted and the material 9 is immediately sent to the first corrugating step B. Furthermore, it is also possible to cut the raw material 9 from the uncoiler 5 after passing through the first corrugating step B.

In the first corrugating step B, a pair of upper and lower first
The corrugating rollers 10 are used to form small ripples 11 running in the left-right direction of the material 9 on both left and right edges of the material 9 and corresponding to the joints 4. It is formed so that the irregularities are continuous at predetermined intervals (state b in FIG. 2A). That is, although the folded roof material 1 is bent in the bending step G described above, a compressive force acts on the folded roof material 1 during the bending process, and processing wrinkles and the like are easily formed. In order to prevent the occurrence of wrinkles and the like and to further facilitate the bending deformation, as shown in FIG. 3, the corrugations 11 are formed on the valleys 2, the respective slopes 3, and the joints 4 respectively.

In the material 9, a crest 11 is formed in a portion other than the goby portions 4 a and 4 b so as to be continuous in the longitudinal direction of the material 9. The wave 11 may be formed over the entire joint 4. The first step of forming the wave 11 of the joint 4 is as follows.
After the goby portions 4a and 4b are formed, the goby portions 4a and 4b
Is in the way, and it becomes difficult to form the wave 11 in the joint 4. The dimension in the thickness direction between the upper protrusion and the lower protrusion of the wave 11 is selected, for example, up to about twice the thickness of the material 9. For example, as the thickness of the material 9
When about 0.6 to 1.2 mm is selected, the dimension in the thickness direction between the upper protrusion and the lower protrusion of the wave 11 is set to about 3 mm.

In the joint forming step C, six joint forming rollers H1 to H6 provided along the feed center axis P of the material 9 are provided.
Joints 4, 4 having goby portions 4a, 4b at both left and right edge portions of the raw material 9 by the joint forming roller group n composed of
Are each molded. The cross sections of the goby portions 4a and 4b gradually change as shown on the right side of FIG. 2C while passing through the joint forming roller group n, and the goby portions 4a and 4b shown in FIG.
It approaches the sectional shape of b. Final stage forming roller H6
Is not completed at the stage of passing, the goby portions 4a and 4b are horizontal as shown in FIG. 2D, and the remaining forming process is performed in the trapezoidal shape forming process E. Do. The number of the joint forming rollers forming the joint forming roller group n is appropriately changed according to the molding shape of the joints 4 and the thickness of the material 9.

In the second corrugating step D, the pair of upper and lower second corrugating rollers 12 is used to move the material 9 closer to the center in the width direction than the portion corresponding to the left and right joints 4. 2 (a), the ripples 11 are continuously formed over the longitudinal direction of the raw material 9 on portions corresponding to the left and right slope portions 3, 3 as shown in FIG. As shown in FIG. 2B, the second corrugating roller 12 has a lower portion near the center in the width direction of the material 9, and the material 9 in the next step E is formed.
The function which can bend | bend smoothly is performed.

In the trapezoidal shape forming step E, 14 steps of trapezoidal shape forming rollers I1 provided along the feed center axis P of the material 9
The raw material 9 is sequentially formed into a predetermined substantially trapezoidal cross section (the state of e in FIG. 2A) by the trapezoidal forming roller group N composed of .about.I14. That is, while the material 9 passes through the trapezoidal forming roller group N, the cross-sectional shape gradually changes as shown on the left side of FIG. 2C, and approaches the cross-sectional shape of the folded roof material 1 shown in FIG. At this time, the goby portions 4a and 4b are formed upward. Incidentally, a group of trapezoidal forming rollers I1 to I1
In No. 4, in both the mountain fold and the valley fold, the material 9 is formed by contacting the material 9 only at the place where the fold is to be formed, so that the wave 11 is not crushed during the formation. The wave 11 is crushed only at the fold. The number of trapezoidal forming rollers constituting the trapezoidal forming roller group N depends on the sectional shape of the folded roof material 1 and the material 9
It is appropriately changed according to the thickness of the sheet.

In the third corrugating step F, a pair of upper and lower third
The corrugations 11 are continuously formed in the valleys 2 of the raw material 9 bent into a substantially trapezoidal cross section as shown in FIG. A pair of upper and lower support rollers 15 are arranged between the third corrugating roller 13 and the bending roller 14 in the bending step G. This support roller 15
It supports the valleys 2 of the material 9 sent out from the third corrugation step F, and functions as a fulcrum of the material 9 to be bent in the next step G.

In the bending step G, the raw material 9 sent out from the third corrugating step F is formed into a wave shape waving vertically and horizontally by a pair of upper and lower bending rollers 14 in the longitudinal direction. That is, the bending roller 14
It is supported by a vertical and horizontal moving mechanism (not shown), and can be adjusted and moved in the vertical and horizontal directions with respect to the feed center axis P. The material of the bending roller 14 is the third.
In the state of being sent out from the corrugating step F,
It can be adjusted vertically or horizontally. As a result, the folded roof material 1 is continuously formed into a wave shape waving in the vertical direction, continuously formed into a wave shape waving in the left and right direction, or a combination of a wave in the vertical direction and a wave in the left and right direction. It is formed in a twisted shape.

Even if the support roller 15 is not provided, the third corrugating roller 13 supports the valley 2 of the material 9 and can be bent in the bending step G up to a bending radius of, for example, about 50 m. By arranging the roller 15, even if the radius of curvature is smaller, bending can be performed. As shown in FIG. 4, the folded sheet material 1 adjacent to each other has a goby portion 4a
4b, the joints 4.4 are formed so that caps or the like are fitted to the edges, and the folded roof materials 1 adjacent to each other are joined at the joints 4.4. Alternatively, the joints 4 may be formed so as to overlap each other, and the overlapped joints 4 may be fastened with a bolt or the like. In this case, the ripples 11 can be formed over the entire joint 4.

[Brief description of the drawings]

FIG. 1 is a principle explanatory view conceptually showing a folded roof material forming apparatus of the present invention.

FIGS. 2A and 2B are explanatory diagrams of a principle for explaining a forming process by a forming device of a folded roof material, wherein FIG. 2A is a perspective view of a material in the process of forming, and FIG. FIG. 2C is a perspective view showing a forming process of a material by a corrugating roller, a second corrugating roller, a third corrugating roller, a support roller, and a bending roller. FIG. 2C is a schematic diagram showing a state of the material being bent and formed. .

FIG. 3 is a perspective view of a folded roof material.

FIG. 4 is a cross-sectional view showing a state where adjacent folded roof materials are joined.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 folded roof material 2 valley 3 slope 4 joint 9 material 10 first corrugating roller 11 wave 12 second corrugating roller 13 third corrugating roller 14 bending roller 15 support roller B first Corrugation process C Joining portion forming process D Second corrugating process E Trapezoidal shape forming process F Third corrugating process G Curving process P Feed center axis H1 to H12 Joint forming roller I1 to I4 Trapezoidal shape forming roller n Joining Forming roller group N Trapezoidal forming roller group

Claims (4)

[Claims] A valley portion, a pair of left and right slope portions bent upward from left and right ends of the valley portion, and a joint portion bent laterally outward from an upper end of each slope portion. 4 is formed in a substantially trapezoidal cross section, and has a valley 2 and a slope 3
A small ripple 11 running in the left-right direction at the joint 4
A method of forming a folded roof material 1 provided with irregularities continuously at predetermined intervals in the longitudinal direction, comprising: a left and right edge portion of a strip-shaped material 9; A first corrugation step B for forming the corrugation 11 in a portion corresponding to the following, and a joining portion forming for forming the joining portion 4 into a predetermined shape in a portion corresponding to the left and right joining portions 4 of the raw material 9 Process C
The portion of the raw material 9 closer to the center than the portion corresponding to the right and left joints 4 and the portion corresponding to the slope portion 3 has the wave 1
2, and a material 9 is bent into a substantially trapezoidal cross section to form a valley 2 and a slope 3
Trapezoidal shape forming step E for forming the joints 4 and the valleys 2 of the material 9 bent into a substantially trapezoidal cross section.
1 and a bending process G of bending the material 9 having a substantially trapezoidal cross section in the vertical or horizontal direction, and then turning the folded roof material 1 into a wave shape. A method of forming a folded roof material, characterized by forming. 2. The method of forming a folded roof material according to claim 1, wherein in the bending step G, the material 9 is bent while being supported by the support rollers 15. 3. A valley portion 2, a pair of left and right slope portions 3 bent upward from left and right ends of the valley portion 2, and a joint portion bent from the upper end of each slope portion 3 to the outside laterally. 4 is formed in a substantially trapezoidal cross section, and has a valley 2 and a slope 3
A small ripple 11 running in the left-right direction at the joint 4
Forming a folded roof material 1 provided so that irregularities are continuous at predetermined intervals in the longitudinal direction, wherein the right and left edges of the strip-shaped material 9 are A first corrugating roller 10 for forming the corrugation 11 in a portion corresponding to the following, and a joining portion forming for forming the joining portion 4 in a predetermined shape in a portion corresponding to the left and right joining portions 4 of the material 9. The roller group n and a portion closer to the center of the material 9 than a portion corresponding to the left and right joints 4 and a portion corresponding to the slope portion 3 are provided with the wave 1
1 and a material 9 is bent into a substantially trapezoidal cross section to form a valley 2 and a slope 3
And a trapezoidal forming roller group N that forms a joint 4 with the valley 2 of the material 9 bent into a substantially trapezoidal cross section.
1, a third corrugating roller 13 and a bending roller 14 for bending the material 9 having a substantially trapezoidal cross section in the vertical or horizontal direction are arranged in this order. A folded roof material forming apparatus, which is arranged so as to be adjustable in the vertical and horizontal directions with respect to a material 9. 4. A third corrugating roller 13 and a bending roller 1.
4 and a supporting roller 15 for supporting the valley 2 of the material 9.
The apparatus for forming a folded roof material according to claim 3, wherein