Smoking article inspection system and associated method

• US 9,844,232 B2
• Filed: 03/11/2014
• Issued: 12/19/2017
• Est. Priority Date: 03/11/2014
• Status: Active Grant

• Current Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Original Assignee: R J Reynolds Tobacco Company (R. J. Reynolds Tobacco)
• Inventors: Wood, Gary Lee, Hiatt, Derwin, McCann, Larry, Shockley, Mike, Nuckols, Eddie, Hall, David R., Brantley, Frank, Martin, Isaac, Sama, Martin, Reddell, Charles, Whitley, Mike
• Primary Examiner(s): Tran, Trang U
• Application Number:
  US14/204,316
• Publication Number:
  US 20150257437A1
• Time in Patent Office: 1,379 Days
• Field of Search: 348125, 348 89, 348 91, 348129, 348130, 348132, 348 86, 348128, 348159, 131280, 131908, 131905, 131906, 131 29, 131 46
• CPC Class Codes: A24C 5/34 Examining cigarettes or the rod, e.g. for regulating the feeding of tobacco; Removing defective cigarettes
• CPC Class Codes: A24C 5/3412 by means of light, radiation or electrostatic fields A24C5/3406 takes precedence
• CPC Class Codes: G06T 2207/30128 Food products
• CPC Class Codes: G06T 7/001 using an image reference approach
• CPC Class Codes: H04N 7/181 for receiving images from a plurality of remote sources

Abstract

Smoking article inspection systems configured to inspect smoking articles are provided. The systems may include imaging devices configured to capture images of an exterior of the smoking article and an analysis unit configured to analyze the images captured by the imaging devices. The analysis unit may execute an edge detection tool configured to determine a position of the smoking article based on an edge location of the smoking article and a defect detection tool configured to determine whether the smoking article is defective after the position of the smoking article is determined. The imaging devices may be configured to capture images of the smoking articles during the assembly thereof. Thereby, the analysis unit may determine any operations during assembly causing damage to the smoking article from analysis of the images of the smoking article captured during assembly. Related methods are also provided.

Claims

1. A smoking article inspection system configured to inspect a smoking article comprising a smokable rod and a filter element connected by a tipping material, the smoking article inspection system comprising:

one or more imaging devices configured to respectively capture one or more images in a visible light spectrum of an exterior surface of the smoking article as the smoking article is supported in a groove defined by a circumferential surface of a drum and oriented parallel to a rotational axis of the drum, the one or more imaging devices being positioned to capture the plurality of images substantially perpendicular to the rotational axis of the drum; and

an analysis unit configured to analyze the images captured by the one or more imaging devices, the analysis unit being configured to execute;

an edge detection tool configured to determine a position of the smoking article based on an edge location of the smoking article; and

a defect detection tool configured to determine whether the smoking article is defective after the position of the smoking article is determined.

2. The smoking article inspection system of claim 1, wherein the edge detection tool is further configured to determine a second edge location of the smoking article to determine a plurality of boundaries of the smoking article.

3. The smoking article inspection system of claim 1, wherein the defect detection tool is configured to perform at least one of:

determining an edge location of the tipping material;

detecting a plurality of perforations extending through the tipping material;

detecting a contrast between a dark portion and a light portion of the smoking article;

determining a color of the smoking article;

detecting a pattern; and

identifying segments of the filter element.

4. The smoking article inspection system of claim 1, wherein the one or more imaging devices comprise at least one of:

an imaging device configured to capture the one or more images of a longitudinal length of a two-up filtered smoking article assembly during application of the tipping material thereto;

an imaging device configured to capture the one or more images of the longitudinal length of the two-up filtered smoking article assembly after creation of a plurality of perforations extending through the tipping material;

an imaging device configured to capture the one or more images of the longitudinal length of the smoking article after division of the two-up filtered smoking article assembly; and

an imaging device configured to capture the one or more images of a terminus of the smoking article.

5. The smoking article inspection system of claim 1, further comprising a cleaning device configured to direct a flow of air proximate at least one of the one or more imaging devices to prevent collection of debris thereon.

6. A smoking article inspection system configured to inspect a smoking article comprising a smokable rod and a filter element connected by a tipping material, the smoking article inspection system comprising:

a plurality of imaging devices configured to respectively capture one or more images in a visible light spectrum of an exterior surface of the smoking article as the smoking article is supported in a groove defined by a circumferential surface of a drum and oriented parallel to a rotational axis of the drum, the one or more imaging devices being positioned to capture the plurality of images substantially perpendicular to the rotational axis of the drum, the one or more imaging devices being configured to capture the one or more images of the smoking article during assembly of the smoking article, wherein assembly of the smoking article comprises a plurality of operations; and

an analysis unit configured to analyze the images captured by the imaging devices, the analysis unit being configured to execute a defect detection tool configured to determine whether the smoking article is defective from the images thereof, and, if the smoking article is determined to be defective, to determine the one of the operations causing damage to the smoking article from analysis of the images of the smoking article captured during assembly.

7. The smoking article inspection system of claim 6, wherein the analysis unit is further configured to execute an edge detection tool configured to determine a position of the smoking article based on an edge location of the smoking article, the defect detection tool being configured to determine whether the smoking article is defective after the position of the smoking article is determined.

8. The smoking article inspection system of claim 7, wherein the edge detection tool is further configured to determine a second edge location of the smoking article to determine a plurality of boundaries of the smoking article.

9. The smoking article inspection system of claim 6, wherein the defect detection tool is configured to perform at least one of:

determining an edge location of the tipping material;

detecting a plurality of perforations extending through the tipping material;

detecting a contrast between a dark portion and a light portion of the smoking article;

determining a color of the smoking article;

detecting a pattern; and

identifying segments of the filter element.

10. The smoking article inspection system of claim 6, wherein the imaging devices comprise at least one of:

an imaging device configured to capture the one or more images of a longitudinal length of a two-up filtered smoking article assembly during application of the tipping material thereto;

an imaging device configured to capture the one or more images of the longitudinal length of the two-up filtered smoking article assembly after creation of a plurality of perforations extending through the tipping material;

an imaging device configured to capture the one or more images of the longitudinal length of the smoking article after division of the two-up filtered smoking article assembly; and

an imaging device configured to capture the one or more images of a terminus of the smoking article.

11. The smoking article inspection system of claim 6, further comprising a cleaning device configured to direct a flow of air proximate at least one of the imaging devices to prevent collection of debris thereon.

12. A method for inspecting a smoking article comprising a smokable rod and a filter element connected by a tipping material, the method comprising:

capturing one or more images in a visible light spectrum of an exterior surface of the smoking article as the smoking article is supported in a groove defined by a circumferential surface of a drum and oriented parallel to a rotational axis of the drum, the one or more imaging devices being positioned to capture the plurality of images substantially perpendicular to the rotational axis of the drum;

determining a position of the smoking article based on an edge location of the smoking article; and

determining whether the smoking article is defective after the position of the smoking article is determined.

13. The method of claim 12, further comprising determining a second edge location of the smoking article to determine a plurality of boundaries of the smoking article.

14. The method of claim 12 wherein determining whether the smoking article is defective comprises at least one of:

determining an edge location of the tipping material;

detecting a plurality of perforations extending through the tipping material;

detecting a contrast between a dark portion and a light portion of the smoking article;

determining a color of the smoking article;

detecting a pattern; and

identifying segments of the filter element.

15. The method of claim 12, wherein capturing the one or more images in the visible light spectrum of the exterior surface of the smoking article comprises at least one of:

capturing the one or more images of a longitudinal length of a two-up filtered smoking article assembly during application of the tipping material thereto;

capturing the one or more images of the longitudinal length of the two-up filtered smoking article assembly after creation of a plurality of perforations extending through the tipping material;

capturing the one or more images of the longitudinal length of the smoking article after division of the two-up filtered smoking article assembly; and

capturing the one or more images of a terminus of the smoking article.

16. The method of claim 12, further comprising directing a flow of air proximate one or more imaging devices configured to capture the one or more images to prevent collection of debris thereon.

17. A method for inspecting a smoking article comprising a smokable rod and a filter element connected by a tipping material, the method comprising:

capturing a plurality of images in a visible light spectrum of an exterior surface of the smoking article during assembly of the smoking article as the smoking article is supported in a groove defined by a circumferential surface of a drum and oriented parallel to a rotational axis of the drum, the one or more imaging devices being positioned to capture the plurality of images substantially perpendicular to the rotational axis of the drum, wherein assembly of the smoking article comprises a plurality of operations;

determining whether the smoking article is defective from the images thereof; and

if the smoking article is determined to be defective, determining the one of the operations causing damage to the smoking article from analysis of the images of the smoking article captured during assembly.

18. The method of claim 17, further comprising determining a position of the smoking article based on an edge location of the smoking article before determining whether the smoking article is defective.

19. The method claim 18, further comprising determining a second edge location of the smoking article to determine a plurality of boundaries of the smoking article.

20. The method of claim 17, wherein determining whether the smoking article is defective comprises at least one of:

determining an edge location of the tipping material;

detecting a plurality of perforations extending through the tipping material;

detecting a contrast between a dark portion and a light portion of the smoking article;

determining a color of the smoking article;

detecting a pattern; and

identifying segments of the filter element.

21. The method of claim 17, wherein capturing the one or more images in the visible light spectrum of the exterior surface of the smoking article comprises at least one of:

capturing the one or more images of a longitudinal length of a two-up filtered smoking article assembly during application of the tipping material thereto;

capturing the one or more images of the longitudinal length of the two-up filtered smoking article assembly after creation of a plurality of perforations extending through the tipping material;

capturing the one or more images of the longitudinal length of the smoking article after division of the two-up filtered smoking article assembly; and

capturing the one or more images of a terminus of the smoking article.

22. The method of claim 17, further comprising directing a flow of air proximate one or more imaging devices configured to capture the one or more images to prevent collection of debris thereon.