An installation (1) for sorting mailpieces (2) includes an unstacker having an unstacking plate (3) suitable for separating a mailpiece at the head of a stack of mailpieces so as to feed a sorting conveyor (4) in which the mailpieces (1), as put into series, are moved in series and on edge. The installation (1) also includes: a feed inlet magazine (6) upstream from the unstacking plate with a motor-driven floor (8) designed to receive a stack of mailpieces (2) on edge; and a retaining paddle (9) that is mounted to move along the magazine and that is suitable for being placed behind the stack to keep it on edge while it is moving on the motor-driven floor towards the unstacking plate.

Systems, devices and methods for receiving an item in a receptacle are disclosed. Features are disclosed for receiving and guiding an item in a receiving space of a receptacle so as to attenuate or remove the impact force of the item on the receptacle. Some embodiments of the disclosure include a bumper having an impact surface which absorbs most or all of the impact force of the item and thereby mitigates or removes the imposition of cyclic impact loads on the receptacle from repeated receipt of items. The bumper may be structurally and/or functionally de-coupled or otherwise physically separated from the receptacle such that an advantageous division of labor is created between absorbing the impact and receiving the item. This disclosure may be useful, for example, in modern industrial operations where a high volume of items are received daily, such as in mail sorting and handling operations.

A mail processing system utilizes a conveyor to shingle or de-shingle mailpieces as they move through the processing system and utilizes belts to move the mailpieces. A first shingling conveyor moves a first mailpiece to overlap with a second mailpiece to create shingled mailpieces. A second shingling conveyor moves a first mailpiece away from a second mailpiece to de-shingle them to create singulated mailpieces. A camera takes images of the mailpieces in the conveyor and image analysis software is used to determine dimensional aspects of the mailpieces that are used to control the belt speeds to move mailpieces with respect to each other. A mail processing system may include a mail processing station that scans addresses, applies postage and/or weighs the mailpieces. Mail may be de-shingled prior to being weighed and then re-shingled for subsequent processing, or mail may shingled prior to passing through a scale if weighing is not necessary.

According to some embodiments, a stacking assembly accepts mail-pieces traveling from a re-direct mechanism in a first direction and urges a leading edge portion of a mail-piece toward a registration wall of a sortation bin. The stacking assembly may include a plurality of neighboring cam shafts, each with at least one cam, arranged along the first direction, such that rotation of the cam shafts results in synchronized rotation of the cams to guide an incoming mail-piece. Rotation of the cam shafts may also urge a previously stacked mail-piece away from the cams, and into the sortation bin, in a second direction perpendicular to the first direction.

A method of sorting articles by means of a sorting system comprising N sorting machines (M.sub.1, M.sub.N) operating in parallel, in which method the articles are divided into N groups (G.sub.1, G.sub.N) of articles to be processed in parallel on the N sorting machines, at least one of the N groups of articles is subdivided into sub-groups of articles (G.sub.1.1, G.sub.1.N-1), and, if it is detected that one of the N machines is being rested, then the method comprises the steps of: feeding the N1 other sorting machines with the sub-groups of articles from said subdivided group of articles and sorting these sub-groups of articles in parallel on the N1 other sorting machines; and feeding the N1 other sorting machines with the N1 other groups of articles and sorting these N1 groups of articles in parallel on said N1 other sorting machines.

A method of sorting articles by means of a sorting system comprising N sorting machines (M.sub.1, M.sub.N) operating in parallel, in which method the articles are divided into N groups (G.sub.1, G.sub.N) of articles to be processed in parallel on the N sorting machines, at least one of the N groups of articles is subdivided into sub-groups of articles (G.sub.1.1, G.sub.1.N-1), and, if it is detected that one of the N machines is being rested, then the method comprises the steps of: feeding the N1 other sorting machines with the sub-groups of articles from said subdivided group of articles and sorting these sub-groups of articles in parallel on the N1 other sorting machines; and feeding the N1 other sorting machines with the N1 other groups of articles and sorting these N1 groups of articles in parallel on said N1 other sorting machines.

Embodiments of a system and method for sorting and sequencing articles in a processing facility are disclosed. Delivery endpoints are divided and grouped into stop groups. A first sorter sorts items according to stop group and outputs the items to trays. The output trays from the first sorter are loaded to a second sorter in stop group order. The second sorter sorts items for each stop group into separate lanes. Each lane can then be sorted into output bins in delivery sequence order.

Embodiments of a system and method for unloading articles from a container of items for use in an automatic stack feeder are disclosed. The automatic stack feeder may comprise a belt, a moveable lower paddle, and a moveable upper paddle, wherein the lower paddle is configured to partially extend through a belt of the automatic stack feeder. The movement of the belt, the lower paddle, and the upper paddle are coordinated such that there is no need to interrupt the operation of the automatic stack feeder to unload the container.

According to some embodiments, a stacking assembly accepts mail-pieces traveling from a re-direct mechanism in a first direction and urges a leading edge portion of a mail-piece toward a registration wall of a sortation bin. The stacking assembly may include a plurality of neighboring cam shafts, each with at least one cam, arranged along the first direction, such that rotation of the cam shafts results in synchronized rotation of the cams to guide an incoming mail-piece. Rotation of the cam shafts may also urge a previously stacked mail-piece away from the cams, and into the sortation bin, in a second direction perpendicular to the first direction.

A storage and retrieval system including a storage structure having storage shelves, each storage shelf having slats for supporting stored items where the slats are spaced apart from each other by a predetermined distance, an autonomous transport vehicle including at least one sensor configured to sense each of the slats and output a signal indicating when a slat is sensed, and a controller for verifying a location of the autonomous transport vehicle within the storage structure based on at least the output signal.