JP2670949B2 - Manufacturing method of single-letter thatched roof plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a roof with a single-lined metal roof.

[0002]

2. Description of the Related Art Generally, a single-roof metal roofing board is a rectangular shape having left and right goby (vertical goby) and upper and lower goby (upper goby, lower goby) which are respectively bent in the opposite directions. In the conventional method for producing a single-character roofing metal roof plate, a metal plate such as a long copper plate having a predetermined size is cut and separated for each size of the roof plate in the expanded state, and then the roof plate in the expanded state is first separated. Bending the vertical goby part one by one in the opposite direction, then bending the upper goby part and the lower goby part in the opposite direction (one roof board), and the vertical goby as described above. There is a method (multiple roofing boards) in which the upper and lower goby parts are bent in the opposite direction after connecting multiple roof plates that have been bent in the opposite direction to the left and right directions, but in both cases the vertical goby Bending of the part is performed after cutting from the metal plate to the specified roof plate size. .

The one-letter-roofed metal roofing board manufactured as described above is joined to a roofing board at the construction site by vertically connecting the roofing boards to each other at the top, bottom, left, and right vertical goby portions to eaves from the eaves. While connecting in a straight line in the left-right direction, the roof is gradually raised to the upper side of the building.

[0004]

By the way, when bending the goby portion of the metal roof plate, first bend the vertical goby portion of the rectangular plate and then bend the upper and lower goby portions. In order to fit the other side's goby into the bent portion, it is necessary to provide a clearance slightly larger than the wall thickness of the roof plate itself without completely adhering the facing surfaces of the plate materials. Moreover, in the left and right sides of the upper and lower seams, the bent portion of the vertical seam has a quadruple structure in which the left and right sides are inward and the other side is outward, and a clearance is required between the facing surfaces of the plate materials. Therefore, as shown in FIG. 5 due to the relationship of curvature, the bent leading edges of the vertical goby located inwardly inevitably have the bent leading edges of the upper goby and the lower goby not aligned in the same plane. The protruding portion a has a knife shape and is formed in this portion.

When handling such a metal roof plate (during processing, transportation, construction, etc.), the hand is carelessly placed on the protrusion a.
The roof part may be injured unexpectedly, and after the roof plate is raised, the protrusion a may damage the vertically adjacent roof plate due to thermal expansion. That is, the metal roof plate cannot avoid expansion and contraction due to temperature change (the coefficient of thermal expansion of copper is 17.7 × 10 −60 C and the copper plate roof plate expands by about 1.24 mm when the temperature rises by 70 degrees Celsius). In order to prevent the roof board from wrinkling or waving, the roof board is generally attached to the roof board so that it can move from side to side with a hook-shaped metal fitting called a suspension fitted in the upper goby. The plates are also goby-coupled so that they can slide to the left and right to some extent. Therefore, each time the roof plate expands or contracts due to thermal expansion (the roof plate temperature reaches around 80 degrees Celsius during the daytime in summer), the knife-shaped protrusion a is located on the lower goby portion of the roof plate adjacent to the upper side and Repeating the rubbing action on the upper goby folded part on the adjacent lower roof plate, it may scratch the goby folded part with time or cause friction cracking, and once the goby folded part is damaged, There is a problem that rainwater will infiltrate from that part and the rainy weather will be damaged.

By cutting off the projecting portion a at the time of construction, this inconvenience is solved, but the projecting portion a of each roof plate is eliminated.
Working with cutting tools one by one is troublesome and reduces the workability, so that the protruding portion a is hidden after the roof is raised, and this is combined with the appearance not changing. In actual work, the protrusion a is often raised while leaving it.

[0007]

The method for manufacturing a one-letter-roofed metal roofing plate according to the present invention was devised based on the above-mentioned actual condition, and has a predetermined lateral width in a deployed state of the roofing plate. Cutting line L that is the bent tip edge of the upper and lower seams of a long metal plate such as a copper plate or stainless steel plate
After forming the wedge-shaped notches b having a depth D that is gradually narrowed inward from the side edge toward the inner side from the side edge and has a depth D that is at least twice the folded width Q of the vertical goby, After bending the vertical goby portion in the opposite direction to the front and back, further cutting and separating the roof boards along the cutting line L, and joining the plurality of roof boards cut and separated as described above at the vertical goby area. The main point is to bend the upper and lower goby parts in opposite directions except the left and right ends in the longitudinal direction.

[0008]

In the manufacturing process of the roof plate, the width of the cutting line L, which becomes the bent leading edge of the upper goby and the lower goby, becomes gradually narrower as it goes inward from the side edge on both left and right sides in the longitudinal direction. By providing the wedge-shaped notch b having a depth D that is at least twice the folding width Q, the bent tip edge of the vertical goby projects forward in the bending direction to form a knife-shaped protrusion a. Will be resolved. In addition, before cutting and separating the roof plates individually, the vertical goby can be bent in the state of long products, and the long products are intermittently sent to the processing machine for each vertical width of the roof plate. This enables continuous processing of the cutout and the vertical goby bend.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for manufacturing a one-letter-roofed metal roofing board according to the present invention will be described with reference to the drawings. First, a metal plate 1 obtained by winding a long copper plate, stainless steel plate, or the like having a predetermined lateral width P in a roof plate developed state is rolled out to the processing machine side, and the upper edge 2 and the lower edge are fed from the feeding tip side. The width of the cutting line L, which is the bent front edge of No. 3, becomes narrower toward the left and right in the longitudinal direction from the side edge toward the inner side, and has a depth D that is twice or more the folded width Q of the vertical goby. The notch b is provided using a molding machine such as a press. In the present embodiment, when the roof plate A alone after being cut along the cutting line L is unfolded, the left and right sides of the roof plate A are notched in the upper and lower sides respectively, and the left and right sides of the roof plate A are cut. On both sides, narrow portions 6 and 7 are formed in which the vertical width is gradually narrowed from the side closer to the center in the left-right width direction to the side edge. Then, the roof plate after being cut along the cutting line L (developed roof plate)
In A, the left and right sides of the plate A are notched asymmetrically as shown in FIG. 1, and both blades are formed in a trapezoidal shape with the base line c connecting the upper and lower notch start points in plan view. I have. That is, one of the upper and lower cutout angles is set to the large angle θ and the other cutout angle is set to the small angle θ ₁ (θ≈2θ
₁ ) This notch angle is not the same angle on the left and right, but on the left and right sides (the ones where the bent portions of the vertical gobs 4 and 5 come inward in the upper goby 2 and lower goby 3 parts) are at a large angle θ, and others The side (also where the bent portions of the vertical gobys 4 and 5 are located outside) has a small angle θ ₁
Is set so that the cutout angles are the same on the left and right diagonal lines of the roof plate A (see FIG. 1). By the way, the above-mentioned notch angle is such that when the upper goby 2 and the lower goby 3 are bent at about 30 degrees, the bent leading edges of the vertical goby 4 and 5 are substantially flush with the bent leading edges of the upper goby 2 and the lower goby 3. The angle is appropriately set so as to be inside the bent front edge of one or the upper goby 2 and the lower goby 3 (for example, the large angle θ is about 6 degrees and the small angle θ ₁ is about 3 degrees).

After forming the wedge-shaped notch b as described above, the left and right vertical gobs 4 and 5 are folded back in the opposite directions. The clearance at the folded portion of the vertical goby is set to be slightly wider than the thickness of the roof plate so that the vertical goves can be easily fitted into each other. After folding back the vertical goby 4 and 5, the roof plate A is further cut and separated along the cutting line L. Then, a plurality of roof plates A that have been cut and separated as described above (for example, 3
After joining the goby at the vertical goby 4 and 5 parts, the roof board A
The upper goby 2 part and the lower goby 3 part are bent about 30 degrees in the opposite directions, except for the left and right ends in the longitudinal direction, with the parts connected to each other. 2a is the center of folding of the upper goby 2, 3a is the center of folding of the lower goby 3, 4a. 5a is the center of bending of the vertical goby 4 and 5.

By the way, the bending centers 4a of the vertical gobys 4 and 5,
5a is configured to be located in the middle of the narrow portions 6 and 7, but in the present embodiment, the depth of the cutout portion b is formed to be slightly larger than twice the vertical goby folded width Q. Therefore, the bending centers 4a and 5a of the vertical gobys 4 and 5 are located slightly outward of the depth center of the notch b.

The installation, positioning, removal and transfer of the roof plate material to the machine are carried out by installing each processing machine so as to match the predetermined size of the roof plate, and sending out the long material of the material in the traveling direction of the process. Process continuously.

[0013]

As described above, according to the present invention, a cutting line serving as a bent tip edge of an upper goby and a lower goby of a metal plate such as a copper plate or a stainless plate having a predetermined lateral width in a developed state of a roof plate. After providing a wedge-shaped notch b having a depth D that is gradually narrowed toward the inner side from the side edge on the left and right sides in the longitudinal direction of L and has a depth D that is twice or more the folded width Q of the vertical goby, The vertical goby portion is bent in the opposite direction, and the roof boards are cut and separated along the cutting line L, and the roof boards cut and separated as described above are joined together by the vertical goby portion. After that, the upper and lower goby parts are bent in the opposite directions except the left and right sides in the longitudinal direction of the joined shingles. In the state, the vertical goby part can be bent, and long items can be roofed. By feeding the sequential processing machines by vertical width is continuous processing of notch b and vertical goby folding becomes possible. In addition, even after folding the upper goby and the lower goby, no protrusions as in the conventional case are generated in the goby fold-over part, and therefore, when handling the roof plate during transportation, construction, etc. Not only does it prevent the risk of accidental injury from hitting the protruding parts, it not only enhances safety, but after roofing, even if the roof plate expands and contracts due to temperature changes, it projects like a conventional roof plate. It is possible to eliminate scratches and frictional cracks on the goby fold of the other roof plate at one part, so that it is possible to eliminate the inconvenience of impairing rain control over time, which is a very useful new effect. Things.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a manufacturing process of a roof plate.

FIG. 2 is a plan view of an upper goby portion of a roof plate.

FIG. 3 is a perspective view of a projecting portion in a conventional left and right roof plate coupling portion, which shows the M bracket in FIG. 6 in an enlarged manner.

FIG. 4 is a plan view showing left and right cutouts of a plurality of connected roof plates.

FIG. 5 is a plan view showing a protruding portion of a conventional roof plate.

FIG. 6 is a plan view of a conventional roof plate in which a plurality of sheets are connected.

[Explanation of symbols]

 1 metal plate 2 upper goby 3 lower goby 4 vertical goby 5 vertical goby 6 narrow part 7 narrow part 4a bending center of vertical goby 5a bending center of vertical goby A roof plate D notch depth Q vertical Goat folding width a Projection b Notch

Claims (1)

(57) [Claims] 1. The left and right sides in the longitudinal direction of a cutting line L, which is a bent tip edge of an upper gob and a lower goby of a metal plate such as a copper plate or a stainless plate having a predetermined lateral width in a developed state of a roof plate. After forming a wedge-shaped notch b having a depth D that gradually becomes narrower from the edge toward the inner side and has a depth D that is at least twice the folded width Q of the vertical goby, the left and right vertical goby portions are turned in the opposite direction. After further bending, the roof plates are cut and separated along the cutting line L, and the roof plates that have been cut and separated as described above are joined to each other at a vertical goby portion, and then the length of the joined roof plates is increased. A method for producing a one-character thatched metal roof panel, characterized in that the upper and lower goby parts are bent in opposite directions except the left and right ends.