Continuous stacking method for sheet metal blanks supplied from press using drive regulation of successive conveyor bands for blanks for preventing deformation during stacking

摘要

The continuous stacking method has the sheet metal blanks delivered to a conveying path provided by 2 successive endless conveyor bands (1,4), each having a stacking mask for reception of the sheet metal blanks, with electronic control of the conveyor band drives, the rear conveyor band acting simultaneously as a wiper. The propagation duration of a leading blank (2) and a following blank (3) are measured at a first measuring point (S1), a gap time determined from the obtained difference, with a second measuring point (S3) providing the propagation time from the front edge to the rear edge of a blank and sensors (S2,S4) at the end of each conveyor band coupled to an evaluation unit (AE), allowing drive regulation for preventing blank deformation upon stacking.