Patent ID: 11945666
Assignee: TRUMPF MASCHINEN AUSTRIA GMBH & CO. KG
Field: Handling (Mechanical engineering)
Classification: CPC B  G  Y | IPC B

Claim 6:
7. A method for loading workpieces with a driverless conveying means and a manufacturing cell for processing the workpieces, wherein a lock is formed in a laterally circumferential safety partition of the manufacturing cell, and wherein an opening of the lock is secured against unauthorized access by means of a first light barrier arrangement with a first transmitter and with a first receiver assigned to the first transmitter, and wherein the driverless conveying means comprises a load receiving means and is controlled by a conveying means controller, wherein
the driverless conveying means is moved to a starting position for the loading operation in front of the lock of the manufacturing cell; and
a second light barrier arrangement and a third light barrier arrangement are activated by the conveying means controller of the conveying means, wherein the load receiving means and the workpieces are laterally bounded on opposite sides by the second light barrier arrangement and by the third light barrier arrangement, and wherein the second light barrier arrangement comprises a second transmitter, which is fastened to the conveying means, and a second receiver, which is fastened to the lock, and wherein the third light barrier arrangement comprises a third transmitter, which is fastened to the lock, and a third receiver, which is fastened to the conveying means; and
the first light barrier arrangement is deactivated by a lock controller of the lock; and
the second light barrier arrangement and the third light barrier arrangement are observed by the conveying means controller of the conveying means and by the lock controller of the lock during the execution of the loading operation; and
if the lock controller of the lock registers an interruption of the second light barrier arrangement or the third light barrier arrangement, the first light barrier arrangement is activated.