| 摘要 |
PURPOSE: A connecting apparatus for duct elbows is provided to connect parts constituting an L-shaped elbow through a series of processes and make joints with the same directivity. CONSTITUTION: A connecting apparatus for duct elbows comprises a frame(11) and a main body part(12). The frame comprises an inner space(S) to allow an elbow(E), which is completed by connecting parts(e1-e5) consecutively, to be extended downward. The main body part comprises a plurality of roller parts(13) which are arranged at regular intervals on the top of the frame and comprise bending rollers(14) controlled toward a center and holders which are protruded from all or a portion of the roller parts and can regulate the distance to the center. The top of a lower part hung on the holders is bent by a bending roller and connected to the bottom of an adjacent upper part so that a single elbow is completed. |
