초록 ▼

Paper sheets which are creased during transport from a magazine to a folding station are delivered between the outer side of a straight reach of an elastic belt conveyor and a row of folding rollers whose radially outwardly tapering peripheral portions extend into a groove in the outer side of the c

Paper sheets which are creased during transport from a magazine to a folding station are delivered between the outer side of a straight reach of an elastic belt conveyor and a row of folding rollers whose radially outwardly tapering peripheral portions extend into a groove in the outer side of the conveyor whereby the rollers fold the sheets along the creases. The straight reach of the conveyor is propped from the inside by a set of rollers which are adjustable toward and away from the row of folding rollers to account for different thicknesses, stiffnesses and/or other characteristics of the sheets. The taper of peripheral portions of successive folding rollers increases in the direction of transport of sheets.

대표청구항 ▼

In an apparatus for folding sheets which consist of paper or the like, the combination of an elongated endless conveyor advancing in a trajectory and having an inner side, an outer side, and two inclined surfaces bounding a substantially V-shaped endless longitudinal groove of a uniform cross sectio

In an apparatus for folding sheets which consist of paper or the like, the combination of an elongated endless conveyor advancing in a trajectory and having an inner side, an outer side, and two inclined surfaces bounding a substantially V-shaped endless longitudinal groove of a uniform cross section in said outer side and enclosing a substantially constant angle with one another over the entire length of the conveyor; a back support adjacent to a portion of said trajectory at said inner side; means for feeding sheets seriatim to said outer side for joint advancement therewith along said trajectory portion; and means for forcing portions of the sheets to various extents into said groove, including at least two surface sections extending into and tapering toward said groove opposite said back support at an angle which changes along said trajectory portion.