Engineering Design 100 Section 202, Team 2Engineering Design 100 Section 202, Team 2 Submitted by:...

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/gpd5087/graysonshomepage.html

http://www.personal.psu.edu/mmw5477/

http://personal.psu.edu/tkp5101/webpageassignment.html

http://www.personal.psu.edu/dcs5434/Homepage.htm

http://personal.psu.edu/mdg5369/homepage.html

mailto:[email protected]


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.


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





















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.


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


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.


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.


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.


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.


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


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


9.

Working Drawings:

FIG 6: 3D Solid Model of Dumpling Maker

FIG 7: Assembly Drawing of Dumpling Maker


10.

FIG 8: Detail drawing of dough bowl

FIG 9: Detail drawing of dough mixer stand


11.

FIG 10: Detail drawing of roller housing


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.


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.


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.


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

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