| 摘要 |
A manufacturing device of a window frame and a bending metal product is provided to prevent the reaction generated in board molding through an upper and lower side support roller and a right and left side support roller which support a board material with being contacted with upper, lower, right and left sides of the board material. A forming roll set comprises: an upper and lower side support roller(40a,40b) in which a board material(100) is contacted with a cylindrical circumference surface and which supports the upper side and the lower side of the board material, moving through a pinch roll set; a forming roller(42a,42b) which is contacted with the inner surface or the outer surface of the cylindrical circumference surface of the board material and molds 3D board material having a curve-cut side; and a right and left side support roller which is contacted with the vertical side of the board material in which the cylindrical circumference surface is curve-cut in 3D and maintains that the board material is perpendicularly curve-cut.
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