Abstract:
A sorting switch for diverting articles from one or more infeed conveyors to two or more outfeed conveyors. A pre-alignment conveyor receives articles from one or more infeed conveyors and selectively diverts individual articles into two or more lateral regions for delivery to an alignment conveyor downstream. The alignment conveyor more precisely aligns the articles within each of the regions for delivery to outfeed conveyors at the downstream end of the alignment conveyor. The alignment and pre-alignment conveyors are realized as belt conveyors with rollers arranged to rotate universally or on axes in specific orientations. In some versions, a belt's rollers roll on bearing surfaces whenever the belt is advancing. In other versions, rollers are selective actuated by moving bearing surfaces. In yet other versions, rollers are not contacted by bearing surfaces at all.
Abstract:
. A conveyor (10) and associated method for diverting closely spaced articles (40) conveyed along the conveyor. The conveyor includes a conveyor belt with rollers (24) oriented to rotate on axes (26) oblique to the direction of belt travel (14) . A series of arrays of bearing surface elements (32) are arranged end to end along the conveyor. The bearing surfaces may be static or rotational . Each array defines a roller-control zone in which the array is selectively activated with its bearing surface elements in contract with the belt rollers (24) or deactivated with its bearing surface elements out of contact with the belt rollers . As the belt advances through an activated roller-control zone, the belt rollers rotate to propel a conveyed article toward a side of the belt. The contiguous roller-control zones are sequentially activated and deactivated to direct articles to the side and off the belt or to let them pass straight through.
Abstract:
A conveyor (10) and a method for depalletizing and singulating packages. The conveyor comprises, in one version, a set-down conveyor (12) on which pallet layers (20) are deposited and conveyed, a row-separation conveyor (14) that separates the pallet layer (20) into spaced rows (22a), a row-extraction conveyor that extracts a leading row of packages from the trailing rows and conveys the packages of the extracted row in a transverse direction, and a singulating conveyor (18) that arranges the articles in a single file. The conveyor system operates by first pulling a gap in the leading row (22a) of a pallet layer (20) when the packages cross into the row- separation conveyor (14). Then the row is extracted from the other rows on the row-extraction conveyor (16). Finally, as the packages travel on and along the singulating conveyor (18), they are aligned to the conveyor's outer edge (56) and rotated, if necessary, to be properly singulated.
Abstract:
A conveyor belt (10) with rollers (34) that rotate on axes (32) oblique to the direction of belt travel (20). Axles (32) are mounted on rods (26) extending perpendicular to direction of belt travel. The axles (32) have cylindrical outer bearing surfaces (38) that define a central axis that is oblique to the direction of belt travel (20) when mounted on the rods (26). Rollers (34) mounted on the axles (32) rotate on the outer bearing surfaces (38) in a direction oblique to the direction of belt travel (20).
Abstract:
Methods and apparatus for singulating articles in a singulating conveyor having an elimination, or separation, conveyor to strip articles not in single file and recirculate or redirect them. The elimination conveyor has a pass-through conveyor belt portion that passes articles received single file from an infeed conveyor off the downstream end of the singulator and a laterally adjacent second conveyor belt portion with rollers that rotate to divert articles not in single file toward or off the side of the elimination conveyor. A recirculation conveyor receives articles diverted off the side of the elimination conveyor and returns them to the infeed conveyor. For refeeding diverted articles to the singulating conveyor downstream, a conveyor receiving articles from the downstream end of the second conveyor belt provides a path parallel to the pass-through articles and feeds them onto a downstream registration conveyor to merge back into the flow.
Abstract:
An alignment conveyor for aligning articles along a side of the conveyor without changing their orientation. The conveyor includes a conveyor belt having article-supporting rollers rotating in a direction oblique to the direction of belt travel as the belt advances. The rollers direct the articles to a side of the belt. A sideguard, formed by a series of plates or an array of rotatable elements, advances with the belt in the direction of belt travel and receives and aligns the articles without causing them to rotate on contact.