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http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
Project 2: Dumpling Maker
Engineering Design 100
Section 202, Team 2
Submitted by: Grayson Davis, Mengxi Wu, Taylor Pawlik, Dan Simons and Michael Gillett
Submitted to Xinli Wu
Summer 2015
Submitted Friday, August 14, 2015
http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
I
Abstract:
The final product of this design project is a dumpling maker. The design had certain
specifications that it had to follow including the ability to be dishwasher safe, a cost of fewer
than two hundred dollars, and the ability to produce over ten dumplings per minute. Out of five
design choices, the prototype chosen is the best fit for the requirements of the project.
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II
Table of Contents
Abstract (Dan Simons) ………… I
Table of Contents (Taylor Pawlik) ………… II
Introduction (Taylor Pawlik) ………… 1
Problem Statement ( Michael Gillett) ………… 1
Mission Statement ( Michael Gillett) ………… 1
Design Specifications (Taylor Pawlik) ………… 1
Design Approach (Gantt Chart) (Dan Simons) ………… 2
Customer Needs Assessment ( Michael Gillett) ………… 3
Concept Generation (Mengxi Wu) ………… 3-6
Design Selection Matrices ( Michael Gillett) ………… 7-8
Working Drawings ( Michael Gillett) ………… 9-11
Prototype (Mengxi Wu) ………… 12
Design Features (Taylor Pawlik) ………… 12
Operation Instructions (Dan Simons) ………… 13
Working Mechanism (Grayson Davis) ………… 13
Cost Analysis (Grayson Davis) ………… 14
Conclusion (Taylor Pawlik) ………… 14
Acknowledgements (Dan Simons) ………… 15
References (Grayson Davis) ………… 15
http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
1.
Introduction:
The goal of this project was to create an automatic dumpling maker in order to ease the
currently taxing process of making dumplings. This problem was analyzed through a customer
needs assessment, which addressed the consumer’s current speed of dumpling construction and
willingness to purchase a dumpling maker, as well as questions concerning the design
specifications given for this project. After these questions were answered, the design was
created with the problems consumers currently face in mind. The group created five designs,
and then narrowed it down to the most efficient design, which includes a mixer, dough press and
cutter, filling dispenser, and dumpling mold, all which run along a conveyor belt.
Problem Statement:
Making dumplings is a process that should be able to be done efficiently and mostly
autonomously. This process should be easy to understand and use. However, the current
dumpling making process is one that wastes time and resources since it is done manually.
Mission Statement:
The mission of this design project is to design and prototype a system to improve the efficiency
of the current dumpling making process.
Design Specifications:
● The dumpling maker should be automatic or semi-automatic.
● The dumpling maker should produce no less than ten dumplings per minute on average.
● The material cost for the dumpling maker should not exceed $200, unless justifiable.
● The dumpling maker should be safe to use, easy to maintain, and dishwasher safe.
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2.
Design Approach:
27-Jul 30-Jul 3-Aug 6-Aug 10-Aug 12-Aug
Identify Needs
Target Specifications
Information Gathering
Concept Generation
Brainstorming
Design Matrix
Design Drawings
Prototype
Construction
Prototype Testing
Engineering Analysis
Cost Analysis
Presentation
Class Demonstration
Project Report
Table 1: Gantt Chart
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3.
Customer Needs Assessment:
How often do
you eat
dumplings?
How many
dumplings can
you make
manually in a
minute?
Would you be
willing to buy a
semi-automatic or
automatic
dumpling maker?
If you answered
no to question 3
explain why not
here.
Would you like
the dumpling
maker to be
dishwasher safe?
How much
would you be
willing to spend
on a dumpling
maker?($)
Few times a
month 1-5 Yes
Yes 100-200
Few times a
week 5-10 Yes
Yes 100-200
Few times a
week 1-5 Yes
Yes 100-200
Few times a
month 1-5 Yes
Yes 100-200
Concept Generation:
Design A
FIG 1: Design A
This design is very easy to wash, but the disadvantage is that the series of rollers is too big and
redundant. Also, it is space consuming and therefore increases the cost of material.
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4.
Design B
FIG 2: Design B
While this design can measure the specific amount of dough and fillings, the roller is too large and
the design as a whole is not at all cost efficient.
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5.
Design C
FIG 3: Design C
Compared with other designs, Design C saves a lot of space. The rollers are small and combined
with dough cutter in the same house. The ring cutter is hidden in the roller house, which prevents
the user from being hurt. Without an outside shell, a large decrease in the material cost makes it
the most economical design.
Design D
FIG 4: Design D
This design is very easily manipulated, and the mixing part is more cost efficient than the other
designs. However, the conveyor belt is very long and the rollers are too large.
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6.
Design E
FIG 5: Design E
Design E does save space, but the last part, which makes the shape of the dumpling, is too
complicated. It is unnecessary to use such heavy and large cylinder. Besides, the dough with
filling is hard to get on cylinder.
http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
7.
Design Matrices:
Selection
Criteria
Design Matrix
A (Reference) B C D E
Dishwasher Safe 0 + + + 0
Load Capacity 0 0 0 0 -
Durability 0 0 0 0 0
Production Cost 0 - + - 0
Ease of use 0 0 0 + +
Dumpling Rate 0 0 + 0 +
Sum +'s 0 1 3 2 2
Sum 0's 6 4 3 3 3
Sum -'s 0 1 0 1 1
Net Score 0 0 3 1 1
Rank 3 3 1 2 2
Continue? No No Yes Yes Yes
Table 2: First design matrix
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8.
Selection
Criteria
Weight
(%)
Concepts
C D (Reference) E
Rating Score Rating Score Rating Score
Dishwasher
Safe 10 4 0.4 3 0.3 3 0.3
Load
Capacity 5 3 0.15 3 0.15 3 0.15
Durability 10 4 0.4 3 0.3 2 0.2
Production
Cost 25 3 0.75 3 0.75 4 1
Ease of use 30 4 1.2 3 0.9 4 1.2
Dumpling
Rate 20 4 0.8 3 0.6 4 0.8
Total Score 3.7 3 3.65
Rank 1 3 2
Continue? Develop No No
Table 3: Second design matrix
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9.
Working Drawings:
FIG 6: 3D Solid Model of Dumpling Maker
FIG 7: Assembly Drawing of Dumpling Maker
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10.
FIG 8: Detail drawing of dough bowl
FIG 9: Detail drawing of dough mixer stand
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11.
FIG 10: Detail drawing of roller housing
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12.
FIG 11 (left) and 12 (right): views of the fully constructed prototype
In the prototype, the mixing part is aligned with the roller house, which is different from the
original drawing. This change not only shortens the distance between the mixing part and roller
house, allowing the process become more efficient, but also shortens the length of conveyor belt,
saving the material cost. Meanwhile, it prevents the waste of dough falling on the conveyor belt.
Design Features:
This design focused primarily on making the dumpling making process more efficient. The
dumpling maker would be made entirely of stainless steel, to ensure that the dumpling maker is
easy to clean. The conveyor belt would be made of rubber, which would also be easy to clean
and durable for an extended period of time. Along with the stainless steel and rubber, the
machine would have five motors to keep the maker running quickly and efficiently. Finally, the
dumpling maker offers an easy to use operating system, allowing the user to quickly and
effortlessly make approximately ten dumplings per minute on average.
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13.
Operation Instructions:
Put flour and water into the mixing bowl. Turn on mixer and stir ingredients until the flour and
water have mixed and become dough. Take the newly made dough and put it into the dough-
rolling machine. The machine will then roll out the dumplings and cut them down to shape and
create them. Once the collection box is full of dumplings, detach the box from the machine and
cook the dumplings. Enjoy!
Working Mechanism:
To start the process of making the dumplings with “The T,” add flour and water to the mixing
bowl. Press the button on the side of the mixer to activate the motor, which spins the mixing
hook. Once the dough is mixed, press the button on the mixer again to shut it off and remove the
bowl. Next, press the button on the side of the base of the dumpling maker to activate all of the
motors within the housing. The motors run the dough rollers, conveyor belts, filling/water
dispenser and the dumpling folder at the end of the machine. Place the dough from the bowl in
the housing for the dough rollers and the dough will be rolled flat and cut into shells that will
drop onto the conveyor belt. Any excess dough will roll off into the dough collection bin on the
side. Reuse the dough from dough collection bin to make more shells. As the dumpling moves
from the rolling station to the filling station, the filling dispenser will drop about 1 cubic inch of
filling onto the shell and spray the edges of the shell with water. The shell then moves onto the
dumpling folder where it is folded and then falls off into the dumpling collection bin. The
process moves fast enough to make at least 10 dumplings per minute.
http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
14.
Cost Analysis:
5, 1000 watt motors to power:
● Mixer
● Rolling machine
● Filling dispenser/Water sprayer
● 2 conveyor belts
(5 motors)($20 per motor) = $100
Conveyor Belt
● According to Alibaba.com, the conveyor belt will cost approximately $5 per belt
Stainless Steel Sheets
● All of the parts put together is 620 square inches and completely made of stainless steel
● 1 square foot sheet of stainless steel (20 ga/0.1cm in thickness) is approximately $13
● 620sq inches/144sq inches=4.31 square feet
● 4.31sq feet x $13 per sq foot= $55.97
Total Cost:
$55.97 + $5.00 + $100 = $160.97
(+/- $10.00 for approximation error)
Conclusion:
In conclusion, the goal of creating a dumpling maker that addressed the concerns discovered in a
customer needs assessment, as well as meeting the design specifications was met. The dumpling
maker can be sold at under maximum price, as well as create approximately ten dumplings per
minute on average and be safe to use and clean, while still giving the consumer an extremely
reliable and durable product.
http://personal.psu.edu/tkp5101/edsgn100_su15_section202_team2_dp2.pdf
15.
Acknowledgements:
Team two would like to extend a warm thank you to Professor Xinli Wu and his assistants, Nick
and Jacob. Without them this project would have been extremely difficult to complete. We
would also like to thank the Penn State College of Engineering for allowing us to use the
resources in the lab to help create our dumpling prototype.
References:
Alibaba Manufacture Directory – Suppliers, Manufacturers, Exporters & Importers. (n.d.).
Retrieved from: http://www.alibaba.com/product-detail/Best-quality-electric-motor-12v-
300w_60278960615.html?spm=a2700.7724838.35.1.fX82a9