Patent ID: 11904371
Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. An operating method for coiling a metal strip by means of a coiling device having a coiler with a coiling mandrel, the method comprising:
feeding the metal strip in a feed direction (x) to the coiling mandrel,
prior to the coiling of the metal strip, lining up at least a rear pressure roller and a deflection plate of a coiling swing arm up with the coiling mandrel, such that the coiling swing arm deflects the metal strip around the coiling mandrel,
moving a movable upper duct flap that is arranged upstream of the coiler as seen in the feed direction (x) to a first position between the coiling mandrel and a front pressure roller of the coiling swing arm for deflecting the metal strip around the coiling mandrel only by the rear pressure roller and the deflection plate of the coiling swing arm, and
guiding the metal strip to the coiler with the movable upper duct flap arranged upstream of the coiler as seen in the feed direction (x), and wherein the movable upper duct flap being movable to a second position that permits deflecting the metal strip around the coiling mandrel by the rear pressure roller and by the deflection plate of the coiling swing arm and additionally by the front pressure roller.