Suction roller for transporting flat material blanks
AssigneeWinkler & Dunnebier
InventorStephan Scheu
Life of this patent
Estimating the term…
Abstract
A suction roller for transporting flat material blanks has a roller axis and a mantle surface. The suction roller is independent of format and therefore can be universally used for transporting flat material blanks, particularly label blanks. The suction roller has controllable suction holes or suction zones that lie at the closest possible distance from one another on its mantle surface. To this end, the suction roller has a plurality of suction slits, which run parallel to the roller axis and open into the mantle surface, whereby at least adjacent suction slits can have suction air applied to them independent of one another, and whereby a slit cover provided with passage holes is disposed on the mantle surface, in such a manner that the passage holes align with the suction slits, at least in part.
Claims11
A suction roller for transporting flat material blanks and for use with a slit cover having passage holes, the suction roller comprising:
- (a) a roller axis;
- (b) a mantle surface;
- and (c) a plurality of suction slits running parallel to the roller axis and opening into the mantle surface;
- wherein suction air is applied to at least adjacent suction slits independently of one another;
- and wherein the passage holes align at least partially with the suction slits when a slit cover is disposed on the mantle surface in a selected manner;
- wherein each suction slit receives suction air applied via at least one respective axial channel disposed in at least one face of the suction roller and opening into the suction slit;
- wherein the axial channels have a circular cross-section, each axial channel having a channel diameter (D) that is at least as great as the sum of twice the suction slit width (B) of the associated suction slit measured in a circumferential direction and the width (A) of a mantle surface region remaining between two adjacent suction slits measured in the circumferential direction.
A suction roller assembly comprising a suction roller for transporting flat material blanks and a slit cover having passage holes, the suction roller comprising:
- (a) a roller axis;
- (b) a mantle surface;
- and (c) a plurality of suction slits running parallel to the roller axis and opening into the mantle surface;
- wherein suction air is applied to at least adjacent suction slits independently of one another;
- and wherein the slit cover is disposed on the mantle surface so that the passage holes align at least partially with the suction slits;
- wherein each suction slit receives suction air applied via at least one respective axial channel disposed in at least one face of the suction roller and opening into the suction slit;
- wherein the axial channels have a circular cross-section, each axial channel having a channel diameter (D) that is at least as great as the sum of twice the suction slit width (B) of the associated suction slit measured in a circumferential direction and the width (A) of a mantle surface region remaining between two adjacent suction slits measured in the circumferential direction.
Dependencies are inferred from the claim text.