Blanking Line: Coil straightening
After the metal strip forms a loop, the decoiler will send it to the next work station in the blanking line, which is the coil leveling.
There is a metal clamping device at the beginning of the straightener part. It clamps the head of a metal strip and achieves loop formation between the decoiler and straightener part.
And the coil inlet rollers and outlet rollers are all rubber coated to prevents the metal strip from scratching.
The straightener machine has a powerful SEW-EURODRIVE motor for leveling. With bottom gear drive, the straightening rollers are six over five structures, in diameter 68mm. The straightening rollers are carbon chroming bearing steel GCr15, with hardness HRC 60±2 for strength leveling and long-term service. There are two SMC air cylinders to pressure the upper rollers from two sides, with turbine worm gear for the roller gap distance change, through Electrical adjustment by touch screen operation panel.
Moreover, the straightener part is an openable structure. For some material that easily leaves scratches and requires high flatness performance, it’s essential to clean the straightening part regularly. And this straightener part structure can be open up for easy cleaning and regular maintenance.
Unlike the conventional coil feeding line, the straightener part has variable speed control with Siemens’s inverter.