Device and process for blank separation in a machine producing pieces of flat material cut out of a web

摘要

A device for blank separation in a machine producing pieces of flat material cut out of a web is described, in which the web in one direction of conveyance is guided through the machine, and the web comprises at least two rows of blanks at right angles to the direction of conveyance, and in which the device comprises a cutting roll for cutting pieces of flat material out of the web. This device is to be improved in such a manner that it is possible to feed the pieces of flat material to an automated delivery, with the rows of blanks being positioned in relatively close proximity. As a solution to this problem it is proposed to provide a blank separating roll which accepts the cut out flat pieces of material of each row of blanks and comprises a vacuum device for retaining the pieces of flat material at the peripheral area of said device, in which at least two conveyors are provided and in which the vacuum device is so controllable that the pieces of flat material allocated to the first row of blanks can be delivered in a first tangential direction of the row of blanks to the first conveyor, and the pieces of flat material allocated to the second row of blanks can be delivered in the second tangential direction of the blank separating roll to the second conveyor.