TEAM 9: ARTEX KNITTING
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Transcript of TEAM 9: ARTEX KNITTING
TEAM 9: ARTEX KNITTINGUD Senior Design 2005
Post Production
Hand Alignment
Knitting Machine Turning Machine Sewing Machine
Turning Machine:
Concept Validation:
Project Transition:
Concepts:
Validation Experiments
• Validated Teflon Seal with Anemometer Testing
• Tested All Variables on Long Machine
• Tested with PLC Code and Teflon Seal on Short Machine
Testing Results
Knit Hat Making Process:Current Process: ~90% hats misaligned Requires six hat alignersImplemented Process: ~20% hats misaligned Requires two hat aligners
Teflon Seal
Teeth
Program Logic Controller
Proven to eliminate vacuum leak.
With Seal
C 9.0 1.8E 9.4 1.3
Machine Input Air Flow (m/s)
Output Air Flow (m/s)
A 9.1 0D 13.1 0.2
MachineInput
Air Flow (m/s)Output
Air Flow (m/s)
Without Seal
Purpose:
• Prevent material from slipping
• Reduce crumpled interior layer
•Reprogrammed Grips
Holds fabric longer to prevent slipping
• Reprogrammed Encoder
Changed zero point to prevent skipping due to the machine’s vibrations
• Deliver drawing package to Artex Knitting
• Deliver un-crumpling concepts to Artex Knitting for further development
• Implementation of designs by Artex Knitting
• Relocation of workers from hat aligning to other tasks
Benefits:
Sponsor:
Louis Gerbarg
Advisor:
Nate Cloud
Team Members:
Jose Caba, Andrew Forester,
Courtney Herbein, and Aaron Wolff
Project Goal:Improve the productivity of the knit hat making process by relocating workers from hand aligning and de-crumpling hats to other jobs on the assembly floor.
Subsystems:• Encoder: Skips and miscounts length of material
• Grips and Tube Exterior: Contributes to material slipping
• Tube Interior: Contributes to crumpled hat interior
• Vacuum Chamber: Vacuum leaks to removal side
Concept Validation: Long Machine
31.25
12.50
23.33
41.94 41.38 41.67
51.72
78.13
0
10
20
30
40
50
60
70
80
90
No Modifications Teeth PLC Code Teflon Seal PLC Code andTeeth
Teflon Seal andPLC Code
Teflon Seal andTeeth
Everything
% W
ith
in T
ole
ran
ce
Long Machine: 78% within Tolerance
02
3
4 5
6 7
81
0 Feeding Rollers/Encoder (Not Shown)
1 PLC Code
2 Knife
3 Application Grips
4 Tube with Applied Vacuum
5 Vacuum
6 Teflon Seal
7 Tube without Applied Vacuum
8 Teeth
9 Removal Grips (Not Shown)
• Increase efficiency
• Reduce number of workers needed to align hats from 6 to 2
• Savings up to $30,000 per relocated worker
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