Patent ID: 7841557

Claim:
A method for unloading a roll of material from a roll changer of a web-processing machine including: providing a first roll arm in said roll changer; providing a second roll arm in said roll changer; providing a first roll of material end supporting first axle journal on said first roll arm; providing a first roll of material end clamping device on said first axle journal; providing a second roll of material end supporting second axle journal on said second roll arm; providing a second roll of material end clamping device on said second axle journal; using said first roll of material end clamping device for securing said first roll of material end on said first axle journal; using said first axle journal for rotatably supporting said first end of the roll of material; using said second roll of material end clamping device for securing said second roll of material end on said second axle journal; using said second axle journal for rotatably supporting said second end of the roll of material; releasing said first roll of material end clamping device; moving said first roll arm in a first axial direction with respect to said first end of the roll of material after said releasing of said first roll of material end clamping device; separating said first axle journal from said first roll of material end while maintaining said second clamping device securing said second roll of material end on said second axle journal; subsequently releasing said second roll of material end clamping device; moving said second roll arm in a second axial direction with respect to said second end of the roll of material; selecting said first axial direction and said second axial direction being opposite to each other; and separating said second axle journal from said second roll of material end in response to said subsequent moving of said second roll arm in said second axial direction opposite to said first axial direction of movement of said first roll arm.