초록 ▼

A device is provided for use in the alignment of sheets transverse to a direction of sheet travel. A sheet retaining device, which conveys the sheets, is displaceably mounted for holding the sheets against a side guide. At least two sheets are situated one above the other in an offset manner in the

A device is provided for use in the alignment of sheets transverse to a direction of sheet travel. A sheet retaining device, which conveys the sheets, is displaceably mounted for holding the sheets against a side guide. At least two sheets are situated one above the other in an offset manner in the direction of sheet travel. An effective retaining surface extends in the direction of sheet travel and has a longitudinal length greater than a transverse width. A ratio of the longitudinal length of the effective retaining surface to the width of the transverse width of the effective retaining surface is greater than three.

대표청구항 ▼

What is claimed is: 1. A device for aligning sheets transversely with respect to a sheet running direction comprising: a sheet support including a side register mark; a suction roller positioned at a fixed distance above said sheet support during transverse alignment of the sheets and having a leng

What is claimed is: 1. A device for aligning sheets transversely with respect to a sheet running direction comprising: a sheet support including a side register mark; a suction roller positioned at a fixed distance above said sheet support during transverse alignment of the sheets and having a length and a longitudinal axis of rotation both extending in the sheet running direction; means for driving said suction roller for continuous rotation about said longitudinal axis of rotation through less than one revolution during engagement of said suction roller with each successive sheet to be aligned against said side register mark; and a plurality of sheet holding surface segments spaced from each other on a circumference of said suction roller, each said sheet holding surface segment having a longitudinal distance in the sheet running direction, and having a transverse distance in a direction of said circumference of said suction roller and transverse to the sheet running direction, said longitudinal distance of said sheet holding surface segment of said suction roller being greater than said transverse distance of said sheet holding surface segment by a ratio of at least 3 to 1, said transverse distance being less than said circumference of said suction roller, successive ones of said sheet holding surface segments spaced on said circumference of said suction roller being in engagement with successive ones of the sheets supported on said sheet support to move each successive sheet on said sheet support transversely to said sheet running direction and into engagement with said side register mark. 2. The device of claim 1 further including first, second and third sheets being arrangable along said length of said suction roller while being aligned transversely to the sheet running direction. 3. The device of claim 1 wherein: said sheet transport suction roller is rotated though one half a revolution for each sheet to be aligned against said side register mark. 4. The device of claim 1 wherein said ratio is greater than 5. 5. The device of claim 1 wherein said sheet support is a feed table. 6. The device of claim 1 wherein said suction roller has spaced suction hole segments on a peripheral surface and alternating spaced non-suction hole segments, and further including a stationary pipe supporting said suction roller for rotation, means supplying suction air to said stationary pipe, and a narrow suction slit on said stationary pipe, said narrow suction slit being alignable with said suction holes to define a narrow suction strip of said suction holes charged with suction. 7. The device of claim 1 further including means for moving sheets from said sheet support in the sheet running direction with a lateral offset. 8. The device of claim 6 further including a tolerance strip defined by an edge of a sheet entering said sheet support, said narrow suction strip being arranged between said tolerance strip and lateral offset edges of sheets supported by said sheet support. 9. The device of claim 1 further including a suction roller drive. 10. The device of claim 1 wherein said means for driving said suction roller include bevel drive gears and a drive shaft rotatably supported transverse to said suction roller and beneath said sheet support. 11. The device of claim 1 further including a flexible belt above said sheet support, said flexible belt driving said suction roller for rotation. 12. A method for aligning sheets transversely to a sheet running direction including; providing a sheet support; positioning sheet side register marks on said sheet support; arranging at least first, second and third sheets in a scaled manner on said sheet support in the sheet running direction; providing a suction roller having a longitudinal axis; providing a drive for said suction roller; supporting said driven suction roller for continuous rotation at a fixed distance above said sheet support and about said longitudinal axis extending in the sheet running direction; moving said first, previously aligned sheet in the sheet running direction and transversely away from said sheet side register marks; concurrently grasping said second one of said sheets from above using said continuously rotating, driven suction roller and moving said second sheet transversely to the sheet running direction beneath said first sheet into engagement with said sheet side register marks during said grasping of said second sheet by said suction roller; and concurrently supporting said third one of said sheets on said sheet support and transporting said third one of said sheets in the sheet running direction beneath said second sheet during grasping of said second sheet by said suction roller and during said moving of said second sheet transversely to the sheet running direction and into engagement with said side register marks by said continuous rotation of said driven suction roller.