Apparatus and method of sorting objects

• US 5,547,063 A
• Filed: 05/24/1994
• Issued: 08/20/1996
• Est. Priority Date: 05/24/1994
• Status: Expired due to Term

• Current Assignee: United Parcel Service Of America Incorporated (United Parcel Service Incorporated)
• Original Assignee: United Parcel Service Of America Incorporated (United Parcel Service Incorporated)
• Inventors: Bonnet, Henri
• Primary Examiner(s): Terrell, William E.
• Assistant Examiner(s): NGUYEN, TUAN N
• Application Number:
  US08/248,057
• Time in Patent Office: 819 Days
• Field of Search: 198/367, 198/367.1, 198/370.02, 198/372, 198/836.1, 198/836.3, 209/596, 209/651, 209/653, 209/900, 209/916, 209/917, 271/298, 271/303, 271/305
• US Class Current: 198/370.02
• CPC Class Codes: B07C 1/02 Forming articles into a stream; Arranging articles in a stream, e.g. spacing, orientating transport of sheets B65H
• CPC Class Codes: B07C 3/06 Linear sorting machines in which articles are removed from a stream at selected points
• CPC Class Codes: B65G 47/82 Rotary or reciprocating members for direct action on articles or materials, e.g. pushers, rakes, shovels means for pushing glass articles onto a conveyor C03B9/453
• CPC Class Codes: B65H 2301/4422 with guide member moving in the material direction
• CPC Class Codes: B65H 2404/267 Arrangement of belt(s) in edge contact with handled material
• CPC Class Codes: B65H 2404/631 Juxtaposed diverting means with each an independant actuator
• CPC Class Codes: B65H 2404/64 reciprocating perpendicularly to face of material, e.g. pushing means
• CPC Class Codes: B65H 29/58 Article switches or diverters
• CPC Class Codes: Y10S 209/90 Sorting flat-type mail
• CPC Class Codes: Y10S 209/916 Reciprocating pusher feeding item
• CPC Class Codes: Y10S 209/917 Endless belt pusher feeding item

Abstract

A sorting system for sorting packages at high speed to a large number of destinations by automation. The sorting system provides a feeding mechanism for depositing flat packages in an upright position on a conveying system. The conveying system includes lower and upper conveyors for supporting the package. Ejection modules are included along the length of the conveying system for guiding as well as ejecting individual packages along the conveying system. The ejection module extends around the items to prevent falling of the items in a first position, and breaks away from the around the article when a plunger pushes the article from the path.

Claims

1. An ejection apparatus for use in sorting individual items traveling along a path, said ejection apparatus comprising:

a jaw which discourages movement of said items in a transverse direction relative to said path;

a plunger configured to eject said items in said direction,

wherein said jaw is configured to extend under said items, as well as around said items, as said items move down said path, and wherein said jaw is configured to move away from around said item as said plunger pushes said item from said path.

2. A guiding and ejecting apparatus for use on a line for sorting individual items, said line having a path along which said items are transported, said path comprising an upper conveyor for supporting said upper end of each of said items;

and a lower conveyor for supporting said lower end of each of said items, said lower conveyor being spaced a fixed distance from said upper conveyor and with said upper conveyor forming a support system for said items, said apparatus comprising;

at least one movable guide for maintaining said items on said path, said guide configured in a first position to prevent said items from falling off a first side of said path as said items move along said path and movable to a second position where an item may be removed from said first side of said path; and

a plunger for pushing an item off said first side of said path when said guide is in said second position said plunger designed such that it pushes the lower part of said item upward and outward as it ejects said item from said support system.

3. The guiding and ejecting apparatus of claim 2, wherein said plunger is configured such that the lower portion of said plunger extends further outward than the upper portion of said plunger such that outward movement of said plunger causes said upward and outward ejection of said item relative said plunger, upon being contacted by said plunger.

4. An ejection apparatus for use in sorting individual items traveling along a path, said apparatus comprising:

a jaw which discourages movement of said items in a first transverse direction relative to said path;

a conveyor for urging said items along said path and providing a supporting surface which discourages movement in an opposite direction relative to said first transverse direction;

a plunger movable relative to said conveyor configured to eject said items in said first transverse direction away from said supporting surface at said conveyor,

wherein said jaw is configured to move away from around said item as said plunger pushes said item from said path, and Wherein said law is configured to extend under said items, as well as around said items, as said items move down said path.

5. An ejection apparatus for use in sorting individual items traveling along a path, said ejection apparatus comprising:

a first jaw which discourages movement of said items in a transverse direction relative to said path;

a second jaw which extends around said items to guide and prevent failing of said items;

a plunger configured to eject said items in said direction,

wherein said first jaw is configured to move away from around said item as said plunger pushes said item from said path; and

wherein one of said jaws extends over and around said items as they move down said path and said other jaw extends under and around said items as they move down said path.