JP2005014025A - Metallic siding manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a metallic siding of a flat shape by using an embossing roll capable of providing the elongation strain corresponding to the elongation strain of a central part as forming a pattern to fitting parts on both sides even when the pattern of the central part in the width direction is diversified. <P>SOLUTION: When manufacturing a metallic siding having a pattern raised part 2 in the center of the width direction of a metal plate 4 and an emboss pattern on fitting parts 1 on both sides in the width direction by using an embossing roll 3 with a rugged pattern on the surface as upper and lower rolls, the metal plate is formed by the roll-forming of one stage by using the embossing roll 3 adjusted so as to satisfy an inequality ¾L<SB>α</SB>-L<SB>β</SB>¾/L<SB>α</SB>≤ 0.04, where L<SB>α</SB>is the maximum line length of the pattern raised part 2 at the center in the width direction of the metal plate 4, and L<SB>β</SB>is the maximum line length of the emboss pattern of the fitting parts 1 on both sides in the width direction. Occurrence of troubles of swell and warp is suppressed by unifying the distribution of residual stresses in the plate width direction even immediately after the roll forming. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a metal siding used as an outer wall material of a general house or a non-house.
[0002]
[Prior art]
The metal siding is a building material used as an outer wall material of a house or the like, and has male and female fitting portions formed on both sides in the width direction so as to be connected and fixed to adjacent siding. A wall surface having a required area is constructed by engaging a plurality of metal sidings by meshing a male fitting part and a female fitting part. Recently, as metal siding with improved appearance design, products with a combination of unevenness such as brick pattern on a wide surface have been increasing, and patterns with deep three-dimensionality with deep unevenness tend to be preferred. is there.
In metal siding, a flat metal plate or a metal strip is usually used as a material. Produced by embossing rolls or the like at the center in the width direction of the metal band, and then forming the male and female fitting portions on both sides in the width direction by roll forming and filling the back side with foamed resin. (For example, refer to Patent Document 1).
[0003]
In the conventional metal siding manufacturing method, after a raised pattern is roll-formed at the center in the width direction, a stucco pattern is formed by etching on the fitting portions on both sides in the width direction regardless of the pattern of the pattern raised portion at the center in the width direction. Molding using the embossing roll that has been applied. Usually, in this state, waviness occurs in the fitting portion, or warpage occurs throughout. For this reason, after the shaping | molding using the said embossing roll, adjustment of the embossing depth of a fitting part is performed repeatedly, grind | polishing a stucco pattern by trial and error until a flat metal plate shape is obtained.
[0004]
In particular, when manufacturing metal siding having a pattern ridge with a deep joint shape, it is difficult to make adjustments using only the embossing roll as described above. Using the provided upper and lower rolls, the fitting part is continuously provided with irregularities, and the elongation distortion with the pattern center part is adjusted.
Further, Patent Document 2 proposes to provide a folding fold partially in the longitudinal direction of the fitting portion in order to give deformation corresponding to the deformation amount of the pattern raised portion at the center in the width direction to the fitting portions on both sides in the width direction. Has been.
[0005]
[Patent Document 1]
JP 2000-158049 A [Patent Document 2]
JP-A-2002-371690 [0006]
[Problems to be solved by the invention]
However, adjusting the stucco pattern formed on the fitting portion by trial and error requires a long time and requires an adjustment material, leading to an increase in the cost of the product.
In addition, the method of continuously providing unevenness to the fitting portion using the upper and lower rolls provided with unevenness before roll forming of the fitting portion in the next step can also be applied to a soft material such as an aluminum alloy plate, It is difficult to apply to a cold-rolled steel sheet that has been work-hardened when applying a pattern with an embossing roll. It is difficult to provide the both side fitting portions with a deep unevenness enough to correspond to the deformation amount of the pattern raised portion at the center in the width direction.
[0007]
Furthermore, in the method proposed in Patent Document 1, since a folding fold is partially provided in the longitudinal direction of the fitting portion, for example, a regular pattern is formed in the width direction or the longitudinal direction such as a brick tone. Although it is suitable for manufacturing, there are cases where it is not possible to support manufacturing of a pattern that is irregular in the width direction and has a discontinuous pattern in the longitudinal direction.
The present invention has been devised to solve such problems, and even if there are a wide variety of patterns in the central portion in the width direction, the elongation strain corresponding to the elongation strain in the central portion associated with pattern formation. It aims at obtaining the metal siding of a flat shape after shaping | molding by shape | molding using the embossing roll which can give both sides fitting part.
[0008]
[Means for Solving the Problems]
In order to achieve the object, the metal siding manufacturing method of the present invention uses an embossing roll 3 having an uneven pattern on the surface as upper and lower rolls as shown in FIG. When manufacturing the metal siding in which the embossed pattern is formed on the fitting portions 1 on both sides in the width direction, the protruding portion 2 is fitted on both sides in the width direction with the maximum line length L _α of the central pattern raised portion 2 in the width direction of the metal plate. relationship between the maximum line length of the embossed pattern parts 1 L _{beta is, | L α -L β | /} L in roll forming of one stage by using an embossing roll 3 is adjusted to _alpha ≦ 0.04 It is characterized by molding.
[0009]
[Action]
According to the present invention, a flat metal plate 4 is used as a raw material, and an elongation strain corresponding to the elongation strain generated when the pattern raised portion 2 is formed at the center in the width direction of the metal plate is generated in the fitting portions 1 on both sides in the width direction. Since the embossing roll 3 provided with a pattern that can be formed in advance is used for one-stage roll forming, even immediately after roll forming, the swell of the both side fitting portions 1 and the occurrence of overall warpage are generated. Suppressed metal siding can be obtained. By making the residual stress distribution uniform over the entire width direction of the processed plate, it was possible to suppress the occurrence of problems such as waviness and warpage.
Therefore, in addition to brick-like regular patterns with an overall joint shape, even large patterns such as irregular sandstone tones that do not have joint shapes in the width direction or longitudinal direction (see FIG. 2), The line length of the pattern portion 2 is measured, and an embossed pattern having an appropriate line length based on the result can be provided in advance in the portion corresponding to the fitting portion 1 of the roll 3. Adjustment of the height by polishing can be omitted. For this reason, it is possible to manufacture metal siding with low cost and high productivity.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The present inventors made trial manufacture of metal siding having various patterns using an embossing roll. At that time, the line length was measured at each position in the width direction of the pattern portion having the unevenness by using the cut sample until the embossing roll for producing metal siding was manufactured. And the thing with the largest pattern part line length and the thing with the largest both-side fitting part line length were compared and arranged. At the same time, the occurrence of the swell of both side fitting parts and the overall warpage in the metal siding formed using the embossing roll was visually observed.
FIG. 3 shows the result of arranging and plotting the relationship between the two.
[0011]
And, when the maximum line length of the raised portion in the central pattern in the width direction is L _α , and the maximum line length of the embossed pattern in the fitting portions on both sides in the width direction is L _β , a line that classifies the quality of the metal siding shape after forming is _{(L α -L β) / L} α = will correspond to ± 0.04.
Therefore, the relationship between the maximum line length L _α of the pattern raised portion at the center in the width direction of the metal plate and the maximum line length L _β of the embossed pattern of the fitting portions on both sides in the width direction is | L _α −L _β | / L _α ≦ In the region outside the range of 0.04, the waviness of the fitting portion and the overall warpage become large, and it cannot be used as metal siding, or the metal siding itself cannot be manufactured continuously.
[0012]
【Example】
About a cut sample in which a sandstone-like raised pattern was given to a 100 mm × 100 mm cut plate of a molten Zn-55% Al alloy-plated steel plate having a thickness of 0.35 mm based on the design design of metal siding, The line length was measured.
The measurement was performed using a three-dimensional shape measurement system with a measurement range of 100 mm and a measurement pitch of 0.1 mm. As a result of the measurement, the line length of the pattern portion at each position was 101.33 mm at the minimum and 103.33 mm at the maximum.
[0013]
When roll forming using embossing rolls, the maximum line length of the central pattern raised part in the line length and width direction and the embossing on both sides in the width direction to prevent problems such as undulations at the fitting parts on both sides in the width direction The relationship between the maximum line length of the pattern and the maximum line length of the fitting portion embossed pattern corresponding to the maximum line length of 103.33 of the pattern raised portion is calculated using the relationship of FIG. 3 obtained in advance. Asked.
And in order to form the said raised pattern, pitch 4.0 is set to the fitting part equivalent location of the both sides of the roll which imitated the irregular sandstone tone which has the maximum depth of 3.0 mm in the roll center, and formed the embossing. An embossing roll having an embossing depth of 0.5 to 0.7 mm provided at ˜6.0 mm and a maximum line length of 104.2 mm was obtained.
As a result of incorporating this emboss roll into an actual production line and forming a metal plate, it was possible to produce a flat metal siding without generating waviness at the fitting portions on both sides in the width direction.
[0014]
【The invention's effect】
According to the present invention, even immediately after manufacturing by one-stage roll forming, since the deformation amount on both sides in the width direction is deformed so as to correspond to the deformation amount in the center portion in the width direction, the residual stress distribution is in the width direction. A metal siding that is uniform over the entire surface and that is flat and does not generate waviness or warpage in the both side fitting portions can be manufactured with high productivity.
For this reason, in addition to regular patterns, even metal siding such as irregular sandstone-like patterns that have no joint shape in the width direction or longitudinal direction can be manufactured at low cost, The application range of metal siding as a scorpio can be greatly expanded, and a significant increase in usage is expected.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating an embodiment of roll forming using an embossing roll produced based on the present invention. FIG. 2 is a diagram showing a cut sample material of metal siding having a raised pattern used in the present invention. 3] Diagram of the relationship between the maximum line length of the raised pattern at the center in the width direction of metal siding and the maximum line length of the embossed portion on both sides in the width direction.
1: Fitting part 2: Pattern raised part 3: Embossing roll 4: Metal plate

Claims (1)

When manufacturing metal siding using embossed rolls with uneven patterns on the surface as upper and lower rolls, with a pattern raised part at the center in the width direction of the metal plate and embossed patterns on the fitting parts on both sides in the width direction, The relationship between the maximum line length L _α of the raised central pattern in the width direction of the plate and the maximum line length L _β of the embossed pattern on both side fitting portions is | L _α −L _β | / L _α ≦ 0.04 A method for producing a metal siding, wherein the embossing roll adjusted so as to be formed is formed by one-stage roll forming.

Images