JPH09108741A - Roll forming machine of building construction plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively make a building construction plate of attaching a solar battery module to the front face compared with the conventional bender machining by installing each lower side forming roll and each upper side forming roll composed of synthetic resin on both sides in the axial direction and installing a protective holding roll composed of soft member between both upper forming rolls. SOLUTION: A raw material panel is inserted between right and left both side guides of a guide part G, and the raw material panel is inserted between a lower side forming roll part A and an upper side forming roll part B of a roll forming machine. In the raw material pane, connection bending parts are formed on both side places in the width direction gradually by each lower forming roll 8 and upper forming roll 12 according to advancing of the raw material panel 1 in the feeding direction. Each lower supporting roll 10 supports the rear of the main plate place without contact with a connector. Protective holding rolls 13 exist on the front face side of the main plate, each protective holding roll 13 is in soft contact with an attachment of a solar battery module, etc., to protect the attachment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention easily, quickly and neatly molds a construction board which is bent in a longitudinal direction from a raw material panel having a solar cell module substrate such as a solar cell module substrate mounted on its surface. The present invention relates to a roll forming machine for building boards.

[0002]

2. Description of the Related Art Recently, a building board having various attachments on its surface has been developed. The attachment is, for example, a solar cell module such as an amorphous silicon solar cell. This solar cell module part is wrapped with an EVA resin material to form a flat substrate (face plate), which is attached to the surface of a building board constituting a roof, a wall and the like.

The surface of the EVA resin material is coated with a fluororesin film. In particular, the solar cell module part is attached to the front surface side of a rectangular substrate having a predetermined length, leaving a predetermined width around the periphery of the substrate, and the rear surface side thereof is provided with a cable with a waterproof connector. .

[0004]

In order to form a building board that bends in the longitudinal direction from a metal original plate provided with the solar cell module section, each attachment is protected by a bender by manual work or the like. I had to. This is because in the case of a solar cell module part, etc., an EVA resin material and a fluororesin film are generally coated on the front surface side of the substrate, and a cable with a connection connector is provided on the back surface. Therefore, from the viewpoint of protecting them, roll forming in which the entire width of the original metal plate is passed was not possible.

Even when the attachment is a protective film or artificial turf, the protective film or artificial turf is compressed by the forming roll when the building board is molded, and if the protective film is used, the protective function is deteriorated. If it is artificial turf, it will lose its shape. In this way, to protect the solar cell module part and form the building board from the original metal plate, it is necessary to perform bender processing, and for the worker it is necessary to perform the forming work while protecting the attachment, which increases the burden. As a result, the manufacturing cost becomes high, and for a company aiming to reduce the product cost, there is a serious disadvantage that it is extremely expensive.

[0006]

Therefore, as a result of earnest studies to solve the above problems, the inventor has found that the invention is a raw material in which a solar cell module portion is provided in advance at a position excluding both sides in the width direction. From the panel, in the upper and lower forming roll group consisting of a plurality of lower forming rolls and an upper forming roll that are sequentially formed as a building plate forming connecting bending portions on both sides in the width direction of the main plate, each lower side The forming roll part has lower forming rolls arranged on both sides in the axial direction of the lower roll shaft, and the upper roll shaft of each upper forming roll part corresponds to both of the lower forming rolls, and is made of a synthetic resin only at both axial positions. An upper forming roll is provided, and a protective pressing roll made of a flexible member is provided between both upper forming rolls of each stage,
By arranging a lower side elevation molding roll section and an upper side elevation molding roll section in the vicinity of the final stage and making it possible to adjust the height, a building plate roll forming machine can be used to easily and easily produce a metal original plate as a substrate with solar cells. It is possible to form a building board that bends in the longitudinal direction quickly and in an orderly manner, and solves the above problems.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, in the raw material panel Pm, the attachment is preliminarily mounted on the front surface side of the flat metal plate 1 as the substrate (see FIGS. 12 and 13). In the present invention, the solar cell module S as an attachment
Is provided. In the solar cell module portion S, the flat solar cell module portion S is enclosed in an EVA (ethylene-vinyl acetate copolymer) resin material 2, and a fluororesin film 3 is provided on the surface side of the EVA resin material 2. Are coated.

At this time, the solar cell module S
Is provided at an intermediate position, leaving both sides in the width direction. Further, connectors C and C are mounted on the back side in the longitudinal direction. The connector C is provided with a cable and a connection terminal. From the raw material panel Pm to the building board P
Metal plate 1 when molding a or building plate Pa after molding
As for the solar cell module section S and the metal plate 1 alone, or the solar cell module section S, the metal plate 1 and EVA.
Although the resin material 2 is shown, the actual cross section is the same as the one shown in FIGS.

Such a raw material panel Pm is formed by the roll forming machine of the present invention as a building board Pa constituting a roof with attachments and a wall and having a convex or concave curved shape in the longitudinal direction. It As shown in FIG. 2, the building board Pa is curved in a convex shape or a mountain shape along the longitudinal direction so as to have an appropriate curvature radius R. And
An intermediate portion including a central portion in the width direction of the metal plate 1 serves as a main plate 4, and the solar cell module portions S are attached to the four main plates, and the main plate 4 is connected on both sides in the width direction. The bent portions 5 and 5 are formed. A concrete type of the connecting bent portions 5 and 5 is a fitting type. Further, since the fluororesin film 3 may be thin as described above, some of them are omitted in the drawings except some drawings such as FIG.

A molding machine for molding the building board Pa from the raw material panel Pm will be described below. As shown in FIGS. 1 (A) and 1 (B), the forming machine is provided with a pair of upper and lower forming rolls in the feeding direction. The raw material panel Pm as shown in FIG.
It is intended to form a building board Pa as shown in FIG.

The upper and lower forming roll groups are composed of a lower forming roll part A ₁ , A ₂ , ..., _An and an upper forming roll part B.
₁ , B ₂ , ..., B _n, and the lower molding roll A ₁ and the upper molding roll B ₁ correspond to each other vertically as shown in FIGS. 1 and 2. Similarly, the lower side forming roll portion A ₂ and the upper side forming roll portion B ₂ correspond to the upper and lower sides, and as shown in FIG. 1A, FIG. _{1, a 2, ..., a} n and the upper-side forming roll unit B _1, B _2, ..., and B _n are arranged such subscript each match. Where the subscript n
Indicates the final stage and the total number of stages is n. Also, in the following, the lower forming roll portions A ₁ , A ₂ , ..., _An and the upper forming roll portion B will be described.
When any one of ₁ , B ₂ , ..., B _n is shown, it is referred to as a lower forming roll portion A and an upper forming roll portion B, and the suffixes are omitted.

In the first embodiment of the present invention, the number of stages of the upper and lower forming roll bodies A and B is 12, but the number of stages is not necessarily limited to this number. Depending on the cross-sectional shape of the plate Pa, the number of stages of the lower molding roll A and the upper molding roll B may be adjusted appropriately. First, frame 1 on both sides of the molding machine in the width direction.
7, 17 are provided, and bearings 18, 18, ... Are mounted at predetermined intervals along the longitudinal direction of both frames 17, 17. Lower bearing rolls A are mounted on the bearings 18, 18, ..., And the lower bearing rolls A ₁ , A ₂ ,
..., lower roll shaft 7 ₁ of the A _n, 7 _2, ..., 7 _n are journalled.

The lower roll shaft 7₁ , 7_Two , ..., 7
_nLower forming roll 8₁ , 8_Two , ..., 8_nIs provided
You. Where each lower roll shaft 7₁ , 7_Two , ..., 7_nTo
Lower forming roll 8₁ , 8_Two , ..., 8_nRespectively
Lower roll shaft 7₁ , 7_Two , ..., 7_nOn both sides in the axial direction of
The lower roll shaft 7₁ For
Shown as a table, the lower roll shaft 7₁ On both sides in the axial direction of
Lower forming roll 8₁ , 8 ₁ Be installed symmetrically
become. That is, as shown in FIG. 1 (B), the lower roll shaft
7₁ The intermediate portion in the axial direction of₁ Formed as
Have been. Such patterns are shown in FIGS.
The lower roll shaft 7 of the final stage_nAnd lower forming roll 8_n
It continues until, and the above-mentioned passing gap 9₁ Also for passage
Void 9_Two, ..., 9_nExist up to.

The passing voids 9 ₁ , 9 ₂ , ..., 9 _n are
The connectors C, C provided on the rear surface side of the raw material panel Pm can pass in a non-contact state. Further, on both sides of the lower roll shafts 7 ₁ , 7 ₂ , ..., 7 _n in the middle of the axial direction, that is, on both sides near the center in the axial direction, the passage gaps 9 ₁ , 9 ₂ ,. _So that 9 _n exists,
As shown in FIG. 5 and FIG. 6, etc., the lower supporting roll 10 ₁ ,
10 ₂ , ..., 10 _n are provided.

Specifically, when the lower roll shaft 7 ₁ is shown as a representative, the lower roll shaft 7 ₁ is arranged so as to secure a gap in which the connectors C and C of the raw material panel Pm are not in contact with _{each other.} Lower supporting rolls 10 ₁ and 10 ₁ are provided symmetrically on both sides in the middle in the axial direction. The lower supporting rolls 10 ₁ , 10 ₂ , ..., 10 _n are made of the raw material panel P.
, m when moving along the feed direction of the lower molding rolls A ₁ , A ₂ , ..., _An and the upper molding rolls B ₁ , B ₂ , ..., B _n , the back side of the raw material panel Pm. It plays a role of supporting from and not bending. The lower supporting rolls 10 ₁ , 10 ₂ , ..., 10 _n may not be provided if necessary.

Next, the upper forming rolls B ₁ , B ₂ ,
, B _n , each upper roll axis 11 ₁ , 11 ₂ ,
..., 11 _n is the bearing 18 is mounted ... to, each upper roll shafts 11 _1, 11 _2, ..., 11 each upper forming roll 12 ₁ on both sides in the axial direction of _n, 12 _2, ..., 12 _n Specifically, when the upper roll shaft 11 ₁ is specifically shown as a representative, the upper forming rolls 12 ₁ and 12 ₁ are provided symmetrically on both sides in the axial direction of the upper roll shaft 11 _1. become. The upper forming rolls 12 ₁ , 12 ₂
, ..., 12 _n are made of synthetic resin. This is the in each lower side forming roll unit A, the lower forming roll ₈₁ in the same stage, 8 _2, ..., 8 _n and an upper forming roll 12 _1, 12 _2, ..., so that the 12 _n corresponding ing.

Between the upper forming rolls 12 and 12 of each stage, as shown in FIGS. 5 and 6, there are protective pressing rolls 13 ₁ , 13 ₂ , ..., 13 _n formed of a flexible member. The raw material panel Pm is provided on the lower side molding rolls A ₁ , A.
₂ , ..., A _n and upper molding rolls B ₁ , B ₂ , ..., B
When moving between _n and each,
Makes flexible contact with the solar cell module S provided on the main plate 4, protects the solar cell module S, moves the raw material panel Pm, and forms the building board Pa. . Such protective press rolls 13 ₁ , 13
_A urethane material or the like is used as an example of a member forming ₂ , ..., 13 _n . As another material, a soft member such as soft rubber, sponge material, or a roll-shaped member having air inside such as a balloon-shaped member may be used.

As shown in FIG. 1 (B), the lower roll shaft 7 and the upper roll shaft 11 at the respective stages have lower gears 15 ₁ , 15 ₂ , ..., 15 _n and upper gears 16 ₁ , 16 respectively.
_2, ..., 16 _n are provided corresponding gears meshing, a lower roll shaft 7 of each stage and the upper roll shaft 11 is adapted to be able to rotate at the proper speed. In the upper and lower forming roll groups, an appropriate lower forming roll portion A on the rear side and an upper forming roll portion B corresponding thereto have a step H with respect to the other upper and lower forming roll groups.

As shown in FIG. 4, a step H is formed in the rear part of the upper and lower forming roll groups to form a bending step in the final step of forming the raw material panel Pm to the building board Pa. , And the building board Pa curved in the longitudinal direction is formed. The structure of the lower molding roll A and the upper molding roll B at the final stage of molding of the upper and lower molding rolls is shown in FIG. In this embodiment, the lower-side elevating and lowering forming roll part Am and the upper-side elevating and lowering forming roll part Bm are provided in front of the lower-stage forming roll part A _n and the upper-side forming roll part B _n at the final stage. Therefore, the height can be adjusted so as to have a step H further above the horizontal forming line L of the upper and lower forming roll groups.

The lower-side elevation molding roll part Am and the upper-side elevation molding roll part Bm are bearing plates in which the lower roll shaft 7 and the upper roll shaft 11 are vertically adjustable with respect to the frames 17 and 17. It is pivotally supported on 19, 19. Then, by moving the bearing plates 19 and 19 in the vertical direction by an appropriate amount, the lower side elevation molding roll part Am
The upper-side elevating molding roll Bm can be moved in the vertical direction as it is. Then, the lower forming rolls 8 ₁ , 8 ₂ , ..., 8 _n and the upper forming rolls 12 ₁ , 12 ₂ , ..., 12 _n are moved together by the lower side elevation forming roll part Am and the upper side elevation forming roll part Bm. Also, the protective press rolls 13 ₁ , 13 ₂ , ..., 13 _n can be similarly moved (see FIG. 6).

And, the lower side elevation molding roll portion Am
And the upper-side elevating molding roll Bm are further forward by a lower-side molding roll A _n-2 and an upper-side molding roll B _n-2.
The building board Pa can be sent out while giving a curvature having an appropriate radius of curvature R to the raw material panel Pm by the lower-side forming roll part A _n and the upper-side forming roll part B _n at the final stage. The radius of curvature R can also be adjusted by adjusting the height so that the numerical value of the step H changes appropriately. In this embodiment, when the number of stages n is 12, the lower side elevation molding roll part Am and the upper side elevation molding roll part Bm are 11
It becomes the stage. Further, the subscript n-2 is the 10th step, which is the lower forming roll portion A ₁₀ and the upper forming roll portion B ₁₀ .

Further, the final stage is the lower side elevation roll A
m and the upper-side elevating molding roll Bm are configured to have a step H so as to gradually lower. Further, FIG. 7 shows an embodiment in which the lower stage elevation molding roll portion Am and the upper side elevation molding roll portion Bm are also provided at the last stage and one side before that. In the embodiment, a step H _S is formed between the molding surface of the lower-side ascending / descending molding roll part Am and the upper-side ascending / descending forming roll part Bm before the final stage and the horizontal forming line L, and the lower-side ascending / descending roll part at the final stage Step H _L between the molding surface formed by Am and the upper-lower elevating molding roll Bm and the molding line _L
And In all of the arrangement examples of the upper and lower forming roll groups, the bending state of the building board Pa is a mountain shape.

Next, as shown in FIG. 8, a building board Pa (see FIG. 9) which is curved in a concave shape in the longitudinal direction is formed. As shown in FIG. 10, this is the horizontal lower and lower forming rolls Am and the upper and lower forming rolls Bm, which are located just before the final stage lower forming rolls A _n and upper forming rolls B _n. The height is adjusted to a position having a step H below the molding line L. And the raw material panel P
It is intended to give a concave radius of curvature R to m. FIG. 11 shows another type of the second embodiment, in which the last stage and the front side of the last stage are a pair of a lower side elevation molding roll part Am and an upper side elevation molding roll part Bm. The forming roll part Am and the upper-side elevating forming roll part Bm are gradually positioned above.

Further, both lower forming rolls 8 in each of the above stages,
There is also an example in which the gap W between the upper molding rolls 12 and the upper molding rolls 12 can be adjusted appropriately. As shown in FIG. 17, this is because the distance W between the two lower forming rolls 8 ₁ and 8 ₁ in the axial direction of the lower roll shaft 7 ₁ (7 ₂ , ..., 7 _n ) varies from the maximum distance WL ₁₂ to the minimum distance Ws _12. Can be changed appropriately. Similarly, the upper roll shaft 11 ₁ (11 ₂ , ..., 1
1 _n ) in the axial direction of both upper forming rolls 12 ₁ , 12
The interval W of ₁ is set to both lower forming rolls 8 ₁ , 8 ₂ ,
, 8 _n , 8 ₁ , 8 ₂ , ..., 8 _n can be appropriately changed from the maximum interval WL ₈ to the minimum interval Ws ₈ in accordance with the interval W.

Further, at the front position of the roll forming machine, as shown in FIG.
As shown in FIGS. 18A, 18 and 19A, 19B, a guide portion G is provided. The guide part G is provided with left and right separation guide boards 20, 20 such that a space 21 is present in the middle, and the widths of the left and right guides 22, 22 can be adjusted on the respective separation guide boards 20, 20. Is configured. Specifically, in the width L of the raw material panel Pm, the maximum width Lw to the minimum width Ls can be used. The advantage of this structure is that the connectors C, C of the raw material panel Pm can pass through the space 21 without any trouble.

In the roll forming machine for a building board Pa of the present invention, a building board Pa of a type in which bilateral symmetrical bent portions 5 and 5 are formed on both sides of the main plate 4 in the width direction is formed from the raw material panel Pm. In this case, first, the raw material panel Pm is inserted between the left and right guides 22, 22 of the guide portion G, and then the raw material panel Pm is molded by the lower forming roll portion A and the upper forming portion of the roll forming machine. It is inserted between the roll portion B and the roll portion B. The raw material panel Pm is gradually formed on each of the lower forming rolls 8 and the upper forming rolls 12 on both sides in the width direction as the connecting bent portions 5 and 5 progress in the feeding direction.

When the raw material panel Pm is moving in the feeding direction, each lower supporting roll 10 supports the back surface side of the four main plates and does not make any contact with the connectors C, C. I try not to. In addition, the protective pressing rolls 13 are present on the front surface side of the main plate 4, and each of the protective pressing rolls 13 keeps the state in which the protective pressing rolls 13 are in flexible contact with the attachment such as the solar cell module portion S to protect the attachment. The flower diagram, which is a cross-sectional view of the above molding process, is as shown in FIG. At the final stage, the building board Pa is formed [see (12) in FIG. 16]. Further, as shown in FIG. 20, it is a roof plan view that is roofed with the building board Pa, and the adjacent connectors C and C are connected to each other via a cable to construct a solar roof.

[0028]

EXAMPLE The number of stages n of the lower molding roll A and the upper molding roll B constituting the upper and lower molding rolls is 12 stages. The lower molding roll A and the upper molding roll B in the process of bending the raw material panel Pm in the upper and lower molding rolls are the third stage from the final stage including the final stage. That is, the lower forming roll portions A and the upper forming roll portions B of the 10th, 11th, and 12th stages have the lower forming roll portions A ₁₀ , A ₁₁ , and A _{12 according} to FIG. The upper forming roll portions B ₁₀ , B ₁₁ , and B ₁₂ serve as upper and lower forming rolls for bending.

As shown in FIG. 4, the lower forming roll portion A ₁₁ and the upper forming roll portion B ₁₁ have a step H and are different from those of the other lower forming roll portion A and the upper forming roll portion B. The position is higher than the horizontal forming line L. The step H is 5 to 6 mm. Further, the material of the protective pressing roll 13 belonging to the upper molding roll portion B is polyacetal resin.

[0030]

According to the first aspect of the present invention, the building board Pa is formed from the raw material panel Pm having attachments preliminarily provided at positions excluding both sides in the width direction to the connecting bent portions 5 and 5 on both sides in the width direction of the main plate 4. In a group of upper and lower forming rolls consisting of a plurality of lower forming rolls A and an upper forming roll B, which are sequentially formed as, each lower forming roll A is a lower forming roll on both axial sides of the lower roll shaft 7. 8 and 8 are arranged, and the upper roll shafts 11 of the respective upper-side rolls B correspond to the lower rolls 8 and 8, and upper rolls 12 and 12 made of synthetic resin only on both axial sides. A protective pressing roll 13 made of a soft material is provided between both upper forming rolls 12 and 12 of each stage, and an appropriate lower side elevation forming roll part Am and upper side elevation forming roll part near the final stage are provided. Bm By using the roll forming machine for the building plate Pa that can be adjusted in height, firstly, a construction in which the solar cell module part S and the connectors C, C are bent along the longitudinal direction from the mounted raw material panel Pm. Board P
a is orderly molded, and secondly, there is an advantage that the building board Pa can be easily and quickly constructed from the raw material panel Pm. As a result, the construction board Pa can be made much cheaper than the conventional bender processing.

The above effect will be described in detail. In the upper and lower forming roll groups consisting of the lower forming roll A and the upper forming roll B, an appropriate lower raising and lowering forming roll Am near the final stage and an upper raising and lowering The height of the forming roll portion Bm is adjustable, so that the lower elevating forming roll portion Am
By appropriately setting the height of the upper-side elevating / forming roll Bm to have a step H, the building board Pa curved along the longitudinal direction in the step of forming the building board Pa from the raw material panel Pm is formed. It can be molded very easily.

Further, an upper gap portion 14 is formed between the upper forming rolls 12 and 12, and a raw material panel Pm on which the solar cell module S and the connectors C and C have been mounted is put in a roll forming machine having a plurality of stages. The building board Pa can be molded without contacting the solar cell module S and the connectors C, C. Therefore, in the molding process, as described above, the solar cell module S and the connectors C, C
Has nothing to contact with the solar cell module S
The connectors C and C can be molded in an orderly manner without damage during molding.

Further, the raw material panel Pm on which the solar cell module S and the connectors C, C, etc. have been mounted can be formed by a roll forming machine as in the case of forming an ordinary building board Pa. It can be done easily and quickly.
Further, when the building board Pa is molded from the raw material panel Pm, the protective pressing roll 13 flexibly contacts the solar cell module part S of the raw material panel Pm, and the lower supporting roll 1
Since 0 and 10 support the lower surface side of the raw material panel Pm to the connectors C and C in a non-contact state, the solar cell module part S
Also, the building board Pa can be formed while protecting the connectors C, C.

[0034] Next, the invention of claim 2 is the invention according to claim 1, in which at the rear side of the group of upper and lower forming rolls, one front side from the lower forming roll part A _n and the upper forming roll part B _{n at the} final stage. By using the roll forming machine for the building board Pa that is composed of the lower side elevation forming roll portion Am and the upper side elevation forming roll portion Bm, only the height of the lower side elevation forming roll portion Am and the upper side elevation forming roll portion Bm is increased. The curved building board Pa can be formed extremely easily by only adjusting.

Next, the invention of claim 3 is the roll for a building board Pa according to claim 1, wherein the final stage of the upper and lower forming roll groups is a lower side elevation forming roll part Am and an upper side elevation forming roll part Bm. Since the molding machine is used, the height can be easily adjusted, which is suitable for a relatively large radius of curvature R.

[Brief description of the drawings]

FIG. 1A is a schematic side view of a roll forming machine for building plates of the present invention, and FIG. 1B is a front view of an upper and lower roll forming machine at an initial stage.

FIG. 2 is a perspective view of an embodiment of a building board curved in a convex shape along a longitudinal direction.

FIG. 3 is a front view of an embodiment of a building board.

FIG. 4 is an enlarged schematic view of a bending forming process portion of upper and lower forming roll groups.

FIG. 5 is a front view of an essential part of the upper and lower forming rolls in a partial cross section at an initial stage.

FIG. 6 is a partial front view of the upper and lower forming rolls in the final stage, with a partial cross section.

FIG. 7 is an enlarged schematic view of a bending forming process portion of an upper and lower forming roll group according to another embodiment.

FIG. 8 is a schematic side view of a roll forming machine for building boards according to another second embodiment of the present invention.

FIG. 9 is a perspective view of a building board formed by the building board roll forming machine according to the second embodiment.

FIG. 10 is an enlarged schematic view of a bending forming process portion of the upper and lower forming roll groups of the second embodiment.

FIG. 11 is an enlarged schematic view of a bending forming process portion of another type of upper and lower forming roll group of the second embodiment.

FIG. 12 is a perspective view of a raw material panel.

FIG. 13 is a vertical sectional front view of a raw material panel.

FIG. 14 is a front view of an essential part of an upper and lower roll forming machine at an initial stage.

FIG. 15 is a front view of essential parts of an upper and lower roll forming machine in an intermediate stage.

FIG. 16 is a schematic sectional view of a raw material panel and a building board showing a molding process.

FIG. 17 is a front view of a main part in which an interval between rolls can be adjusted.

FIG. 18 is a perspective view of a guide portion.

FIG. 19 (A) is a front view showing a partial cross section of the guide portion, and (B) is a plan view of the guide portion.

FIG. 20 is a schematic view of the rear surface side of the roof showing the layout of the building boards.

[Explanation of symbols]

 S ... Solar cell module part Pm ... Raw material panel Pa ... Building plate 4 ... Main plate 5 ... Connection bending part 7 ... Lower roll shaft 8 ... Lower forming roll 10 ... Lower supporting roll 11 ... Upper roll shaft 12 ... Upper forming Roll 13 ... Protective press roll Am ... Lower elevation molding roll section Bm ... Upper elevation molding roll section

Claims (3)

[Claims] 1. A plurality of stages of lower side sequentially formed from a raw material panel in which solar cell module parts are previously provided at positions excluding both sides in the width direction, as a building board in which bent portions for connection are formed on both sides in the width direction of a main plate. In the upper and lower forming roll groups consisting of the forming rolls and the upper forming rolls, each lower forming roll has a lower forming roll arranged on both axial sides of the lower roll shaft, and an upper roll of each upper forming roll. The shaft is provided with upper molding rolls corresponding to both lower molding rolls and made of synthetic resin only at both axial positions, and protective pressing rolls made of a flexible member are provided between both upper molding rolls of each stage. A roll-forming machine for building boards, characterized in that it is provided with a lower-side elevation molding roll section and an upper-side elevation molding roll section near the final stage so that the height can be adjusted. 2. The roll molding for a building board according to claim 1, wherein a lower side elevation molding roll section and an upper side elevation molding roll section are arranged in front of the final stage of the upper and lower section forming roll groups. Machine. 3. The roll forming machine for building boards according to claim 1, wherein a lower side elevation forming roll section and an upper side elevation forming roll section are arranged at the final stage of the upper and lower section forming roll groups.