Wrap N’ RollAutomatic 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”

Folding Arm Subsystem

Napkin Box Subsystem Roller & Track

Subsystem

Napkin Grabber Subsystem

Utensil Container 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 Ejection

mechanism: Prototype

Contoured to fit shape of silverware

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)

15 rad/s = 143.3 RPM v (0.38 m/s) / r (.0254 m)

P = 25.2 W P = T (1.68 N-m) * (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