Sorter mechanism

• US 6,076,683 A
• Filed: 10/29/1997
• Issued: 06/20/2000
• Est. Priority Date: 10/29/1997
• Status: Expired due to Term

• Current Assignee: Sandvik Intellectual Property AB (Sandvik AB)
• Original Assignee: Sandvik Sorting Systems Inc.
• Inventors: Okada, Goro, Rutz, Ronald T.
• Primary Examiner(s): Walsh, Donald P.
• Assistant Examiner(s): MARTIN, BRETT C
• Application Number:
  US08/960,622
• Time in Patent Office: 965 Days
• Field of Search: 209/559, 209/583, 209/584, 209/656, 209/657, 209/577, 198/580
• US Class Current: 209/656
• CPC Class Codes: B07C 1/00 Measures preceding sorting according to destination
• CPC Class Codes: B07C 3/06 Linear sorting machines in which articles are removed from a stream at selected points

Abstract

Coded articles are conveyed through an orienting section which tends to arrange the articles in single-file, spaced apart relationship. The articles are then conveyed through a reader/sensor mechanism where the codes are read and the spatial relationship of the packages is determined. Articles which are both properly scanned and properly spaced are conveyed to respective branch lines of a sorter section in accordance with information gleaned from the codes. Articles which are improperly scanned or improperly spaced are diverted to a recycle conveyor by a recycle diverter device located upstream of the sorter section and are re-routed back to the orienting section.

Claims

1. A method of conveying and sorting coded articles, comprising the steps of:

A) conveying non-oriented articles through an orienting mechanism for orienting the non-oriented articles in single file and at predetermined intervals;

thereafter

B) conveying the articles past a reading/sensing mechanism which reads codes on the articles and senses a spacing between successive articles;

thereafter

(C) conveying properly read and properly spaced articles to respective branch lines of a sorter section in accordance with data read from the codes;

(D) diverting, at a location upstream of the sorter section, improperly read articles and improperly spaced articles; and

(E) conveying the diverted articles back to the orienting mechanism.

2. The method according to claim 1, wherein the step of sensing improperly spaced articles comprises sensing articles traveling abreast of one another.

3. The method according to claim 2, wherein the step of sensing improperly spaced articles further comprises sensing an improper interval between successive articles.

4. The method according to claim 1, wherein the step of sensing improperly spaced articles comprises sensing an improper interval between successive articles.

5. The method according to claim 1 further including the steps of repeating steps A, B, C, and D for a period of time, and thereafter automatically directing improperly scanned articles to a collection site for manual inspection.

6. An apparatus for conveying and sorting coded articles, comprising:

an orienting mechanism for orienting non-oriented articles in single file and at predetermined intervals;

a reading/sensing mechanism disposed downstream of the orienting mechanism for reading codes on the articles and sensing a spacing between successive articles;

a sorter section, including a plurality of branch lines disposed downstream of the reading/sensing mechanism;

a plurality of diverters disposed at respective branch lines for diverting, onto respective branch lines, articles that are properly read and properly spaced;

a recycle conveyor arranged to convey articles to the orienting mechanism; and

a recycle diverter arranged between the reading/sensing mechanism and the sorter section for diverting improperly read articles and improperly spaced articles onto the recycle conveyor.

7. The apparatus according to claim 6, wherein the reading/sensing mechanism includes means for sensing articles traveling abreast.

8. The apparatus according to claim 7, wherein the reading/sensing mechanism further includes means for sensing an improper interval between successive articles.

9. The apparatus according to claim 6, wherein the reading/sensing mechanism includes means for sensing an improper interval between successive articles.

10. The apparatus according to claim 6 and further including a controller connected to the reader/sensing mechanism and the recycle diverter for automatically periodically deactivating the recycle diverter from diverting improperly read articles for a period of time, whereupon the improperly read articles are directed to a collection site for manual inspection.