JPH07115088B2 - Origami roofing material, method of forming origami roofing material, and apparatus for forming origami roofing material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding roofing material which is applied in the roofing of a wave-shaped roof and is curved in the longitudinal direction, a method for molding the same, and a molding apparatus therefor.

[0002]

2. Description of the Related Art In a long-sized plate roof material having a substantially trapezoidal cross section, the slopes are bent upward from the left and right ends of the valley, and the joints are bent laterally outward from the upper ends of the slopes. Bending the whole of it downwards in the longitudinal direction is disclosed in Japanese Patent Publication No. 56-12373 and Japanese Patent Publication No. 55.
No. 42645, etc. There, a group of forming rolls was used to form the folding roofing material in a straight line, and then a corrugation with a continuous waveform was formed in the valleys, and bending was performed with a bending roll consisting of two groups to bend downward. I was getting an origami roofing material. Regarding the bending portion, there is also a known form (Japanese Patent Publication No. Sho 53-33539) in which the folding roof material is bent by a bending roll consisting of three rolls, but in any case, the first-stage bending roll is fed to the forming roll. It is common in that it is positioned above the central axis to perform bending processing.

[0003]

SUMMARY OF THE INVENTION According to the conventional forming method in which a curved process is performed after a linear folding roof material forming step and a corrugating step, a cross section of the folding roof material at the time of corrugation is formed. Since the shape has already been completed, it is necessary to prepare a corrugating roll having a diameter large enough to reach the valley of the folded roofing material, which is expensive. In particular, in the case of a large-sized origami roofing material having a large valley depth, the manufacturing cost of the corrugated roll is high. Further, as the number of roll steps required for a series of processing, the total value of the number of roll steps for forming, corrugating, and bending is indispensable.

In the conventional molding apparatus, only a downwardly curved fold plate roof material can be obtained, and this can only form a dome-shaped roof having a simple partial spherical shell shape, and is compatible with diversifying building designs. I was also dissatisfied with the point that I could not finish it. Regarding the bending process, conventionally, the first-stage bending roll is positioned above the feed center axis of the forming roll, and the subsequent bending rolls are positioned below the preceding-stage roll. Therefore, the pass line in the bending step is largely bent at the position of the first-stage bending roll, and the feed resistance of the blank material becomes large as a whole, so that the bending radius cannot be reduced to a certain value or less, which is a processing limitation.

Therefore, an object of the present invention is to obtain a folded roof material having a substantially trapezoidal cross section, which can be curved upward in the longitudinal direction and can be used for various architectural designs. Another object of the present invention is to reduce the manufacturing cost of the corrugating roll, further reduce the number of roll steps required for a series of processes, and manufacture a curved roof plate having a substantially trapezoidal cross section and other shapes at low cost. A molding method and a molding apparatus are provided. Still another object of the present invention is to change the arrangement of bending rolls for bending to reduce the feed resistance of the blank material, and to fold the folding roofing material with a smaller bending radius in any of the upper and lower directions. (EN) Provided are a molding method and a molding device for a plate roof material.

[0006]

According to the present invention, for example, as shown in FIG. 2, a valley portion 2, a pair of left and right slope portions 3 formed by bending upward from the left and right ends of the valley portion 2, and each of the slope portions 3 are formed. In a folded roofing material having a substantially trapezoidal cross section having a joint portion 4 formed by bending from the upper end toward the lateral outer side, each sloping surface portion 3 and each subsequent joint portion 4 have a long corrugation 11. It is required that it is formed continuously in all directions, and that the whole is curved upward in the longitudinal direction. In the forming method of the present invention, the corrugating roll 1 is applied to the material 9.
A corrugated step B of forming a corrugations 11 of the continuous waveform at 0, waves
By corrugating the material 9 through the attaching step B,
A molding step C successively formed into a predetermined cross-sectional shape of the resulting et a primary blank 12 a group of forming rolls, at three or more stages of bending rolls arranged in a gradually away state to the upper and lower either one, the molding process C After that, the primary blank 12 is formed into a predetermined cross-sectional shape.
The folding roof material 1 is required to be formed through a bending step D in which the secondary blank 13 obtained by forming the sheet into a shape is bent upward or downward in the longitudinal direction. Specifically, the bending roll in the curved step D 2
The next blank 13 is curved while being finish-formed. Further, in the corrugating step B, the corrugating roll 1 is formed on the material 9 at a position corresponding to a pair of sloped surfaces 3 of the origami roofing material having a substantially trapezoidal cross section and a joint 4 protruding from the upper end thereof.
0 to form a corrugations 11, a molding step C sequentially formed into a substantially trapezoidal cross section of the primary blank 12 which is corrugated in a group of forming rolls, bending of three or more stages arranged in a gradually away state upward roll, the forming process the secondary blank 13 through the C through a curved step D of bending along the longitudinal direction upward to form a folded plate roof material.

Further, the forming apparatus of the present invention comprises a corrugating roll 10 for forming a continuous corrugation 11 on the plate surface of the material 9 from above and below along the feed center axis P of the material 9, and a corrugating roll 10 .
Obtained by corrugating the material 9 through the step B
To a group of forming rolls for successively molding a et a primary blank 12 into a predetermined cross-sectional shape are arranged respectively in succession to the forming roll at the last stage, from the feed center axis P either up or down to one are arranged at gradually away state, the
The primary blank 12 is formed into a predetermined cross-sectional shape with a forming roll.
While molded finish resulting et a secondary blank 13 by, that it comprises a vertical three or more stages of bending rolls to bend either to one, in the vertical direction relative to the central axis P feeding each bend rolls It is required to be movably supported.

[0008]

[Action] prior to other processing, since the corrugation process the material 9, it is possible to reduce the diameter of the corrugating roll 10.
The corrugations 11 prevent wrinkles from occurring when the material 9 is curved, and facilitate the bending process. The bending roll provided in the bending step D is originally formed to have a predetermined cross-sectional shape in order to prevent the cross-sectional shape of the origami roofing material 1 from changing due to internal strain during bending. By utilizing this, from the bending roll the secondary blank 13 bent Shinano, when finish forming continuously the forming step C, by a roll number of stages of the bending roll, the roll number to be subjected to molding at a molding step C Can be reduced.

[0009] In the bending step D, away gradually from the central axis P sends a bending roll, that is, to place the feed center axis P in an arc to a tangent, the secondary blank 13
The feed resistance when passing through the bending roll becomes small. This means that you can bend the secondary blank 13 with a smaller radius of curvature.

[0010]

EFFECTS OF THE INVENTION The folded roof material of the present invention has a slope 3
Since the corrugations 11 are formed in each of the joining portions 4 and the cross-section has a substantially trapezoidal shape, there is no problem in curving upward in the longitudinal direction, and a folded plate roof material curved upward is manufactured. In addition, it is advantageous to form a corrugated roof having a complicated appearance by using together a folded roof material having a different upward curved shape, a folded roof material 1 curved downward, and the like. In the present invention, since the corrugating process is performed after the corrugating process, the corrugating roll 10 having a small diameter is used.
The corrugation can be performed by the method described above, and the cost required for manufacturing the corrugating roll 10 can be reduced as compared with the conventional processing mode. Further, by using the bending roll used in the bending step D, the folding roof material 1
Since it can also be molded into the final shape, the required number of forming rolls in the forming step C can be reduced by the number of bending rolls. Therefore, the total length of the production facility is shortened and the facility cost is reduced, and the curved origami roofing material 1 can be manufactured at low cost. This facilitates transportation and assembly of production equipment, which is also advantageous in this respect.

[0011] In the molding apparatus of the present invention, a bending roll for bending machining, and arranged in a gradually away state upward or downward from the feed center axis P of the material 9, the has been sent from the molding process C 2 primary blank 13 the so curved by shifting along the pass line for bending of the feed center axis P and the tangent, decrease the feed resistance when the secondary blank 13 passes through the roll bending as compared with the conventional curved configuration Therefore, it is possible to perform bending with a smaller bending radius value. Therefore, a variety of building designs can be accommodated by using a variety of origami roofing materials 1 having different curving radii.

[0012]

(First Embodiment) FIGS. 1 to 6 show an embodiment of a roofing material, a molding method and a molding apparatus for the same according to the present invention, in which a folded roof material 1 is curved upward in the longitudinal direction. The case will be described. In FIG. 2, the folded roof material 1 is formed in a trapezoidal cross section as a whole, and has a valley portion 2, a pair of left and right slope portions 3 that are bent upward from the left and right ends of the valley portion 2, and each slope surface. The joint portion 4 is formed so as to be bent laterally outward from the upper end of the portion 3. The distance between the upper ends of the pair of slopes 3 is 400 mm, and the slope 2
The vertical height to the top of the is 200 mm.

In FIG. 1, curved folding plate roof materials 1 are arranged in order from the left side, a material cutting step A, a corrugating step B,
It is formed through a molding process C and a bending process D. In the material cutting step A, and supplies feed roll 6 sends a roll wound metal web uncoiler 5, a continuous sheet-like material 9 made by cutting in shear 7 for each length of 20~30m to the next step B . The metal web is a conventionally known plated steel sheet, a steel sheet coated on both front and back surfaces, or 2
A steel plate or the like having a sheet of foam resin having a sound insulation and heat insulating property of mm or more is attached or attached. The material 9 may be cut into a predetermined length in advance, in which case the material cutting step A is omitted and the material 9 is immediately sent to the corrugating step B. Further, the raw material 9 from the uncoiler 5 may be cut after passing through the corrugating step B.

In the corrugating step B, a continuous corrugation 11 is formed on the material 9 by a pair of upper and lower corrugating rollers 10 (FIG. 3).
reference). As described above, the fold roof material 1 is curved upward, but when curved, a compressive force acts on the joint 4 side,
Processed wrinkles are easily formed there. In order to prevent the generation of wrinkles and to facilitate the bending deformation, the corrugations 11 are formed over the upper ends of the slopes 3 and the leading edges of the joints 4 following the slopes 3. Actually, the material 9 as shown in FIG.
The corrugations 11 are formed in advance continuously on both ends in the width direction over the longitudinal direction. In the figure, the corrugation 11 is formed from the upper end of the slope 3 to the tip edge of the joint 4, but the corrugation 11 may be formed from the intermediate portion of the slope 3 or the tip of the joint 4 may be formed. You may stop before this side. The dimension in the thickness direction between the upper protrusion and the lower protrusion of the corrugations 11 is up to twice the thickness of the material 9.

In the molding step C, the corrugated step B
Successively formed into a predetermined cross-sectional shape in the group of forming rolls provided along the resulting et a primary blank 12 to the feed center axis P (F1 to F12) by the material 9 a corrugating.
The cross-sectional shape of the primary blank 12 gradually changes as shown in FIG. 4 while passing through each forming roll (F1 to F12),
Although it approaches the cross-sectional shape of the folded roof material 1 shown in FIG. 2, the molding is not completed at the stage where the final molding roll F12 has passed. The inclination angle of the slope portion 3 has not reached a predetermined value, and the bent shape of the joint portion 4 is also incomplete. The remaining shaping process is performed in the bending step D as described later. By the way, since the group of forming rolls (F1 to F12) performs the forming in contact with the primary blank 12 only at the portion where the fold line is to be formed in both the mountain fold portion and the valley fold portion, the corrugation 11 is It is not crushed,
As shown in, the corrugations 11 are crushed only at the polygonal line portions.

In the bending step D, the molding step C is followed by the above-mentioned step 1.
By molding the next blank 12 into a predetermined cross-sectional shape
The resulting et a secondary blank 13 four bending rolls (G1 to
G4) is used to finish forming the final cross-sectional shape while curving upward in the longitudinal direction. Each of the bending rolls (G1 to G4) is gradually moved upward from the feed center axis P such that the curve connecting the centers of the facing portions of the rolls is an arc having the feed center axis P as a tangent line, and each bending roll is Were arranged with an adjacent interval of 500 mm.

The group of bending rolls (G1 to G4) changes its position according to the bending radius to be processed. In order to easily change this position, as shown in FIG. 6, each bending roll (G1 to G4) was supported with respect to the support frame 14 so as to be adjustable in the vertical direction orthogonal to the feed center axis P. Specifically, the upper and lower roll shafts 15 of the bending rolls (G1 to G4) are slid and guided by the guide groove 17 via the slide block 16, and each slide block 16
The adjusting screw 19 provided on the support frame 14 can be moved up and down. In FIG. 6, the upper and lower rolls forming the bending rolls (G1 to G4) may be placed such that the lower roll in contact with the upper roll is slightly displaced to the right in the figure. .

The secondary blank 13 gradually changes its cross-sectional shape while passing through the bending step D, and the bending roll G4 at the final stage.
The final cross-sectional shape is completed at the stage of passing. FIG. 5 shows the change in cross section at this time. In FIG. 1, a guide roll 20 for supporting and supporting the valley 2 of the secondary blank 13 so as to support it from below is provided between the final-stage forming roll F12 and the first-stage bending roll G1. It is arranged. The guide roll 20 slightly lifts the secondary blank 13 from the feed center axis P to smoothly guide the secondary blank 13 from the forming step C to the bending roll G1 in the bending step D. Using the above molding apparatus, it was possible to form a folded roof material 1 having a bending radius of 30 m. Material 9 at this time
Had a plate thickness of 1.2 mm.

(Second Embodiment) FIG. 7 shows a molding apparatus for curving the folding roof material 1 downward in the longitudinal direction, and steps A to D are performed as in the first embodiment. The difference lies in that a group of bending rolls (G1 to G4) are arranged so as to gradually move away from the feed center axis P downward. In this case, the corrugation 11 is formed over the valley portion 2 and the slope portion 3, and the corrugating roll 10 is provided with corrugated teeth for corrugation formation only in the center portion in the width direction, Even when forming a curve, the valleys 2 and the slopes 3 can be provided with corrugations.

(Other Embodiments) Each of the above embodiments is a dedicated molding line for forming the downwardly curved or upwardly curved folding plate roofing material 1. However, one molding line is used for the downwardly curved and upwardly curved lines. It is also possible to selectively form the plate-shaped folding roof material 1. In this case, the downward corrugating rolls 10 and the upward corrugating rolls 10 are arranged adjacent to each other, and either one of them is selectively operated. Further bending step D
In the above, two groups of bending rolls (G1 to G4) are prepared, and one group is arranged in an upward slope shape and the other group is arranged in a downward slope shape, or the above one group of bending rolls (G1 to G4) is arranged.
4) may be configured to be movable from above the feed center axis P to below. The bending roll in the bending step D may have at least three stages.

[Brief description of drawings]

FIG. 1 is a principle explanatory view conceptually showing an apparatus for forming an upwardly curved folded plate roof material.

FIG. 2 is a perspective view of an upwardly curved folded roof material.

FIG. 3 is a plan view of a primary blank.

FIG. 4 is a cross-sectional view showing a cross-sectional change of the primary blank in the forming process.

FIG. 5 is a cross-sectional view showing a cross-sectional change of the secondary blank in the bending step.

FIG. 6 is a front view showing a support structure for a bending roll.

FIG. 7 is a principle explanatory view conceptually showing a forming apparatus for a downwardly curved folded plate roof material.

[Explanation of symbols]

 1 folded plate roof material 2 valley part 3 slope part 4 joint part 9 material 10 corrugating roll 11 corrugation 12 primary blank 13 secondary blank A material cutting process B corrugating process C molding process D bending process P feed center axis F1 -F12 Forming roll G1-G4 Bending roll

Claims (5)

[Claims] 1. A trough 2, a pair of left and right slopes 3 bent upward from the left and right ends of the trough 2, and a joint bent from the upper end of each slope 3 toward the lateral outer side. 4 is formed in a substantially trapezoidal shape in cross section, and the corrugations 11 are continuously formed in the longitudinal direction on each of the slopes 3 and each of the joints 4 subsequent thereto. Curved origami roofing material. 2. A corrugating step of forming the corrugations 11 of the continuous waveform with corrugated rolls 10 to the material 9 B, to the corrugation to the material 9 through the corrugating step B
The Ritokura The primary blank 12 group of a molding step C successively formed into a predetermined cross-sectional shape in the forming roll, in three or more stages of bending rolls arranged in a gradually away state to the upper and lower either one, the molding process C Through the first blank 12
And a curving step D for curving the secondary blank 13 obtained by molding into a predetermined cross-sectional shape upward or downward in the longitudinal direction. 3. The method for forming a fold plate roof material according to claim 2, wherein in the bending step D, the secondary blank 13 is bent while being formed by a bending roll. 4. In the corrugating step B, the material 9 is
Is a portion corresponding to a pair of slope portions 3 of the origami roofing material having a substantially trapezoidal cross section and a joint portion 4 projecting from the upper end thereof.
The corrugations 11 are formed by corrugating roll 10, the wave-ordered a molding step C sequentially formed into a substantially trapezoidal cross section with a group of forming rolls the primary blank 12, three stages arranged in a gradually away state upward The folding roof material is formed by the bending roll described above, and a folding roof material is formed through a bending step D in which the secondary blank 13 that has been subjected to the molding step C is curved upward in the longitudinal direction. Method. 5. The material 9 along the feed center axis P of the material 9
By corrugating the raw material 9 through the corrugating process 10 and the corrugating roll 10 that forms a continuous corrugation 11 on the plate surface by sandwiching the plate from above and below .
The Ritokura The primary blank 12 Yes respectively placed a set of forming rolls and the sequentially formed into a predetermined cross-sectional shape, in succession to the forming roll in the final stage, whereas one vertical from the feed center axis P Placed gradually away from the front
The primary blank 12 is formed into a predetermined cross-sectional shape with the forming roll.
It includes three or more stages of bending rolls to bend to either down while molding the resulting et a secondary blank 13 by the form, adjust the movement in the vertical direction relative to the central axis P feeding each bend rolls Forming equipment for foldable roof material that is supported as much as possible.