A non-damage corner folding method and box-shaped metal decorative insulation board

Abstract

The invention discloses a non-damaged angle folding method and a box-shaped metal decorative heat insulation plate. The method is suitable for processing of the box-shaped metal decorative heat insulation plate. The side of the metal plate is bent upward into a first side wall, the first side wall is clamped, an end part is reserved, the end part is pushed inward in a direction perpendicular to the side wall by using a pushing tool to form an arc crease inclined inwards and upward, finally, the side adjacent to the crease is bent upward into a second side wall, and the crease is pressed into asuperposed state to form a non-damaged folded angle. The invention also discloses the box-shaped metal decorative heat insulation plate processed by the method. The angle folding method is simple andlabor-saving in operation, does not cut the metal plate material, has no damage and is resistant to corrosion. The folded angle is in the superposed state and does not occupy space. The method can beused to produce the box-shaped metal decorative heat insulation plate with a wider side wall of a shell, which does not need joint pointing during installation, can hidden a sealant in a small gap between two heat insulation plates, is more beautiful in appearance and is not prone to aging and falling off.

Description

technical field [0001] The invention relates to the technical field of production and processing of thermal insulation and decorative materials for external walls, in particular to a non-damage corner folding method suitable for processing box-shaped metal decorative thermal insulation boards, and box-shaped metal decorative thermal insulation boards. Background technique [0002] The current metal insulation and decoration integrated board is bent into a box shape on the metal plate and then pasted with rock wool as the insulation layer, and the metal box is used as the outer decoration and protection layer. The width of the hem (side wall) of the metal shell generally does not exceed 20mm. The main reason is It is because the current technology cannot achieve wider bending, so the existing conventional bending method is as follows Figure 4 As shown, first cut off the four corners to form a rectangular gap, and then bend the four sides. This method makes the four corners of...

AI Technical Summary

Problems solved by technology

The gap is large, and the sealant is easy to age and fall off, resulting in poor waterproof performance. After rainwater enters, it will not only affect the thermal insulation performance, but may also cause the metal plate to corrode from the inside

[0003] For this reason, the inventor has improved the hemming technology, and the direct inward folding angle is 45°, but there is another problem. When the hemming exceeds 15mm, the corner area is large, and a large pressure is required for inward folding. easy to break, the solution for this is as Figure 5 As shown, cut off a piece of triangle at the four corners to reduce the corner bending area, and bend symmetrically along the center line of the triangle when folding, but the fracture formed after trimming cannot be anti-corrosion

Moreover, the folded corner protrudes inward, which affects the filling of the insulation layer, so it is not easy to fill

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