| 摘要 |
<p>The present invention relates to a rolling device of manufacturing a duct connecting hole and, more specifically, to a rolling device of manufacturing a duct connecting hole comprising: a roller body (100) composed of an upper frame (110), a body (120), and a subframe (130); a fin member (200); a lower guide material (300); an elastic member (400); a duct molding material (500); an upper guide member (600); a cover member (700); and a fixating member (800). According to the present invention, it is possible to prevent a rotary shaft from being deformed or destroyed by significantly reducing internal stress applied to the rotary shaft if the rolling device is compressed for molding a duct since a structure of avoiding moving the rolling device in the transverse direction and of moving only a duct molding material in the transverse direction is configured.</p> |
