Wrap N’ Roll Automatic Silverware Roller Team There is No Spoon      Patrick Goldrick Joel McKoy George Niou Ryan Patterson Lori Reinert

Agenda       Review of Problem Statement Proposed Solution Subsystems Engineering Analysis Prototype Review and Demonstration Conclusion

Problem Statement   Problem statement: Restaurants spend a great deal of time and money to have workers complete the tedious process of manually rolling silverware into a napkin  No product available to automate process Proposed solution: Develop a device that automatically groups one napkin, fork, and knife without use of an employee.

Proposed Solution: “Wrap N’ Roll” Napkin Box Subsystem Utensil Container Subsystem Roller & Track Subsystem Folding Arm Subsystem Napkin Grabber Subsystem

Napkin Platform Subsystem  Key features   Elevated corner supported by spring Friction on back surface  Integrated turn-around switch

Roller & Track Subsystem  Key features  5’ steel track  Sushi roller   Controlled by brushless DC motor Stainless steel rods to support sushi roller when extended

Roller & Track (cont’d)

Napkin Grabber Subsystem   Key features  Pivoting arms   Rubber grippers Spring-activated locking mechanism Mounted to sushi roller platform  No additional track or activation device needed

Napkin Grabber (cont’d)  Napkin grabber reset by acrylic piece at opposite end

Utensil Container Subsystem   Key features   Hinged in front to add utensils Can tilt forward when loading  Prototype  Contoured to fit shape of silverware  Ejection mechanism: Knives must have relatively flat handle

Utensil Container Subsystem (cont’d)

Utensil Release

Napkin Folder Subsystem  Key features  Metal bars pivot on an angle  Triggered by trolley

Napkin Folder Subsystem (cont’d)

Engineering Analysis     T = 1.68 N-m =

14.9 lb-in

 T = F (66.2 N) * r (0.0254 m) w = 15 rad/s =

143.3 RPM

 w = v (0.38 m/s) / r (.0254 m) P = 

25.2 W

P = T (1.68 N-m) * w (15 rad/s) Selected motor: Brushless DC Motor

Prototype   Video Live demonstration

Conclusions    Design capable of rolling one fork and one knife into a napkin Main subsystems include     Napkin platform Trolley and track Napkin grabber Utensil containers  Napkin folders Main difference between prototype and design was type of material