| 摘要 |
PURPOSE: A device for joining a duct corner portion is provided to assemble a duct with compatibility even though the sizes of the upper and lower parts of a duct are different. CONSTITUTION: A device for joining a duct corner portion comprises a body, a folding unit, a transfer-operating unit. The body includes a base panel(22), an upper panel, a supporting body(24), and a duct supporting unit. The duct supporting unit includes a first supporting piece(41) and a second supporting piece(54) and receives a temporary assembled duct, thereby supporting the same. The folding unit includes a supporting roller, a folding roller, and a slider and bends a bent piece for join-supporting a rectangular plate of the duct to be closely adhered to the exterior surface of the other rectangular plate. The transfer-operating unit transfers the folding unit along the duct corner portion.
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