INSPECTION SYSTEM

• US 20140260104A1
• Filed: 06/02/2014
• Published: 09/18/2014
• Est. Priority Date: 06/01/2010
• Status: Active Grant

• Current Assignee: Ackley Machine Corporation
• Original Assignee: Ackley Machine Corporation
• Inventors: ACKLEY, E. Michael, FORD, Mark
• Granted Patent: US 9,101,962 B2
• Time in Patent Office: Days
• US Class Current: 53/443
• CPC Class Codes: B07C 5/34 Sorting according to other particular properties material testing per se G01N; quality control G07C3/14
• CPC Class Codes: B07C 5/3412 according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication sorting according to size measured by light-responsive means B07C5/10; sorting according to optical properties B07C5/342; for packages B65D79/02; for information carriers G06K7/00
• CPC Class Codes: B07C 5/3422 using video scanning devices, e.g. TV-cameras
• CPC Class Codes: B07C 5/362 Separating or distributor mechanisms switches for postal sorting B07C3/065; particular discharging devices for B65G47/74
• CPC Class Codes: B07C 5/363 by means of air
• CPC Class Codes: G01N 2021/845 Objects on a conveyor
• CPC Class Codes: G01N 2021/8592 Grain or other flowing solid samples
• CPC Class Codes: G01N 21/85 Investigating moving fluids or granular solids
• CPC Class Codes: G01N 21/8806 Specially adapted optical and illumination features
• CPC Class Codes: G01N 21/8851 Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges G01N21/8806 and G01N21/93 - G01N21/95692 take precedence; optical measurement of dimensions G01B11/00; optical scanning G02B26/10; image transformation G06T3/00; computerised image enhancement G06T5/00; image processing per se for flaw detection G06T7/0002
• CPC Class Codes: G01N 21/9508 Capsules; Tablets
• CPC Class Codes: G01N 2201/02 Mechanical
• CPC Class Codes: G01N 2201/062 LED's
• CPC Class Codes: G01N 2201/0621 Supply
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

An inspection system is configured for use with a conveyer apparatus including carrier bars. Each carrier bar conveys pellet-shaped articles along a predetermined path. The inspection system includes at least one camera unit for sensing a predetermined characteristic of the pellet-shaped articles, a removal unit, and a controller. The removal unit, downstream from the at least one camera unit, removes selected pellet-shaped article(s) from the carrier bar(s) depending on whether the characteristic is sensed by the at least one camera unit. The controller is in communication with the at least one camera unit and the removal unit. The controller provides a signal to the removal unit in accordance with the sensed characteristic. The removal unit includes a rotatable ejection drum having extended vacuum nozzles along its length, equal to the number of articles conveyed in each carrier bar. Each vacuum nozzle selectively removes article(s) from the carrier bar(s) by suction.

Claims

1. An inspection system configured for use with a conveyer apparatus having at least one row of product receiving pockets, each pocket being structured to convey a pellet-shaped article along a predetermined path, the inspection system comprising:

at least one camera unit configured to sense a predetermined characteristic of the plurality of pellet-shaped articles;

a removal unit, downstream from the at least one camera unit, structured to remove at least a selected one of the plurality of pellet-shaped articles from at least a selected one of the pockets depending on whether the predetermined characteristic is sensed by the at least one camera unit; and

a controller in communication with the at least one camera unit and the removal unit, the controller providing a signal to the removal unit in accordance with the predetermined characteristic sensed by the at least one camera unit,

wherein the removal unit includes a rotatable ejection drum having a plurality of extended vacuum nozzles along its length that corresponds to the number of articles conveyed in each row, each vacuum nozzle structured to selectively remove the article from a corresponding pocket by suction.

2. The inspection system according to claim 1, further comprising one or more of:

a light assembly provided to illuminate the articles as they are being sensed;

a plurality of controllable valves associated with respective vacuum nozzles, each of the valves being selectively controllable by the controller to control vacuum pressure to the associated nozzle; and

a flexible tip portion adapted to engage the article on each said vacuum nozzle.

3. The inspection system according to claim 1, further comprising a plurality of camera units, each said camera unit including a respective processor, the plurality of camera units being configured to cooperate with one another to perform, via the processors provided thereto, distributed defect and/or error detection with respect to the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis.

4. The inspection system according to claim 1, further comprising a plurality of camera units, the plurality of camera units being divided into first and second separate sets of camera units, wherein:

output from the first set of camera units is processable to detect defects and/or errors of a first magnitude of the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis,

output from the second set of camera units is processable to detect defects and/or errors of a second magnitude of the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis,

the first magnitude is greater than the second magnitude.

5. The inspection system according to claim 4, wherein each said camera unit includes a respective processor, each said processor being used in said defect and/or error detection.

6. The inspection system according to claim 4, wherein the first and second separate sets of camera units are provided at different respective stages along the predetermined path.

7. The inspection system according to claim 1, further comprising a plurality of camera units, at least some of the camera units cooperating with one another to form a color vision and/or imaging system configured to at least differentiate between different colors of pellet-shaped articles to help avoid cross contamination as between different pellet-shaped article types conveyed along the predetermined path in connection with a single one of said rows and weed out defective articles.

8. The inspection system according to claim 1, further comprising a plurality of camera units, at least some of the camera units cooperating with one another to form a vision and/or imaging system configured to determine whether print quality is legible and correctly aligned on individual ones of the pellet-shaped articles.

9. The inspection system according to claim 1, wherein the removal unit is structured to remove all the articles from the pockets by suction, the removal unit being configured to selectively release suction applied to the articles to directly deposit the articles into either one of an accept bin or a reject bin depending on whether either side of the article is defective.

10. The inspection system according to claim 1, wherein the removal unit is configured to selectively remove articles that are acceptable from the pockets by suction and passively allow rejected ones of the articles to be removed from the pockets.

11. The inspection system according to claim 1, wherein the ejection drum is releasably mounted to allow removal for servicing, cleaning, and/or replacement with a drum having a different number and/or arrangement of vacuum nozzles.

12. The inspection system according to claim 1, wherein the predetermined characteristic includes at least one of marking error, printing misregistration, particular indicia, color, gel coating, and/or laser drilled hole.

13. The inspection system according to claim 1, wherein the controller is further configured to associate one or more components of the apparatus with detected defects and/or errors.

14. The inspection system according to claim 1, further comprising at least one carrier bar in which pockets are formed, in rows.

15. The inspection system according to claim 2, wherein the light assembly includes a dome structure and one or more LED lights, the dome structure including a reflective interior surface adapted to reflect light from the LED lights onto the articles being sensed.

16. The inspection system according to claim 13, wherein the controller is further configured to associate one or more components of the apparatus with detected defects and/or errors based on a positional relationship and/or time as to where and when the defect or other error occurred.

17. A method of making a genuine batch of pellet-shaped articles in connection with an inspection system configured for use with a conveyer apparatus having at least one row of product receiving pockets, each pocket being structured to convey a pellet-shaped article along a predetermined path, the method comprising:

separating acceptable pellet-shaped articles to be included in the genuine batch, from unacceptable pellet-shaped articles to be excluded from the genuine batch, in connection with the inspection system; and

packaging together the separated acceptable pellet-shaped articles in making the genuine batch,

wherein the inspection system comprises;

at least one camera unit configured to sense a predetermined characteristic of the plurality of pellet-shaped articles;

a removal unit, downstream from the at least one camera unit, structured to remove at least a selected one of the plurality of pellet-shaped articles from at least a selected one of the pockets depending on whether the predetermined characteristic is sensed by the at least one camera unit; and

a controller in communication with the at least one camera unit and the removal unit, the controller providing a signal to the removal unit in accordance with the predetermined characteristic sensed by the at least one camera unit,

wherein the removal unit includes a rotatable ejection drum having a plurality of extended vacuum nozzles along its length that corresponds to the number of articles conveyed in each row, each vacuum nozzle structured to selectively remove the article from a corresponding pocket by suction,

18. The method according to claim 17, wherein the inspection system further comprises a plurality of camera units, each said camera unit including a respective processor, the plurality of camera units being configured to cooperate with one another to perform, via the processors provided thereto, distributed defect and/or error detection with respect to the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis.

19. The method according to claim 17, wherein the inspection system further comprises a plurality of camera units, the plurality of camera units being divided into first and second separate sets of camera units, wherein:

output from the first set of camera units is processable to detect defects and/or errors of a first magnitude of the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis,

output from the second set of camera units is processable to detect defects and/or errors of a second magnitude of the plurality of pellet-shaped articles conveyed along the predetermined path, on a row-by-row basis,

the first magnitude is greater than the second magnitude.

20. The method according to claim 17, wherein the inspection system further comprises a plurality of camera units, at least some of the camera units cooperating with one another to form a color vision and/or imaging system configured to at least differentiate between different colors of pellet-shaped articles to help avoid cross contamination as between different pellet-shaped article types conveyed along the predetermined path in connection with a single one of said rows and weed out defective articles.