Research, design, and implement ation off a designed washing machine for footwear

OVERVIEW OF THE TOPIC

INTRODUCTION

In the late 19th century, the second industrial revolution erupted, marking a significant shift in daily activities and behaviors following two revolutions As countries raced to showcase technological advancements and the emergence of modern electrical devices, this period could be seen as a major milestone in the future development of the world [1]

Alongside these developments, the traditional method of sun-drying clothes gradually evolved into more convenient practices In 1938, the first automatic washing and drying machine was introduced to the market in the United States, laying the foundation for the development of laundry technologies in the future [2]

Currently, the laundry industry holds a significant market share and has become a trend for Vietnamese students to start their own businesses [3] With the growth of the fashion industry, individuals strive to express their unique style and personality Consequently, we can observe the rise of numerous laundry establishments along this path Even in sports, we aim to be more dynamic and outstanding on the field Therefore, our footwear becomes an essential component in portraying our beauty Have you ever asked yourself if you feel confident when owning a pair of fresh, clean shoes to showcase great ball handling skills like L Messi on the football field or powerful jumps like Michael Jordan? But to keep the shoes always ready for play, do we have time to take care of them However, to always keep our shoes in a state of readiness, do we have time to take care of them?

Understanding these concerns, as a Mechanical Engineering student at the University of Technical Education, instead of presenting an elaborate graduation project such as an AGV (Automated Guided Vehicle), industrial machinery, or equipment, why don't we apply the knowledge we have acquired to address practical issues? This is precisely why our group chose to pursue the topic: "Research, design and implementation of a designated washing machine for footwear", with our team's motto being: "Applying the smallest details to contribute to a better quality of life."

SIGNIFICANCE OF THE TOPIC

By choosing the topic "Research, design and implementation of a designated washing machine for footwear", our group has identified the relevant and important factors for the current development trend, along with practical needs that may arise Through selecting the research subjects, conducting surveys, calculations, and addressing related issues, this topic aims to enhance convenience in daily life and academic pursuits, partially alleviating workload and pressure on individuals

Furthermore, this topic holds immense significance for each member of the group It can be considered as the final project that brings everyone together, concluding the last pages of our university journey and applying the knowledge we have acquired as Mechanical-Electrical Engineering students at the Faculty of Mechanical Engineering, University of Technical Education

With the collective hope of all group members, we aim to contribute our intellect and ethics to nation-building The development of a "home-made" machine that meets all the needs of daily life represents a significant achievement, marking the level of scientific and technical expertise in Vietnam that is gradually catching up with the world in the near future It symbolizes a major milestone in aligning our country's progress with global advancements.

RESEARCH OBJECTIVES AND TARGETS

Our group aims to utilize the knowledge we have acquired, along with research conducted on forums, the internet, and surveys on practical needs, to develop the topic "" This project aims to contribute our intellect and the fiery passion of our youth to the modernization process of our country, creating a meaningful life and achieving the initial goals set by the group at the beginning of the topic:

• Select suitable equipment, materials, and utilize appropriate mechanical transmission mechanisms for the concept

• Sketch and design a complete machine using Solidwork

• Address any issues that arise during the implementation process and propose reasonable solutions

• Test and evaluate the results

The group conducts surveys on the factors influencing the output signals related to the topic, focusing on:

• For individuals: The users are sports enthusiasts who engage in sports activities after work hours, with an average age ranging from 23 to 35 and an average monthly income of over 10 million VND

• For sports disciplines: Indoor sports such as soccer, basketball, badminton, gym, table tennis, etc

• For the items requiring cleaning: Size, material, breathability, properties, shape, etc

• For harmful agents: Dirt sticking to the sole of shoes, sweat, dampness, bacteria, etc

• For cleaning needs: Cleanliness, freshness, dust control, bacteria elimination, odor removal

• For machine requirements: Flexibility, good material quality, durability, appropriate washing and drying time, cost ranging from 5 to 15 million VND, multiple functions, user-friendly operation, user safety…

RESEARCH METHODS

Consult and research the issues related to the laundry and drying industry and current trends

Survey consumer opinions, identify the target audience, and select appropriate criteria to proceed with machine design

Refer to existing knowledge, books, articles, and research on related topics by competitors to identify their strengths and weaknesses for learning purposes

Choose all the parameters, equipment, and mechanisms that can be applied and draft the topic accordingly

Conduct product modeling and testing

Evaluate the achieved results, identify the strengths and weaknesses of the topic, address relevant issues, and determine the direction for future market introduction

RESEARCH LIMITATIONS

The topic has conducted surveys on parameters and input requirements to select electrical components, perform design calculations, create mechanical models, and develop control algorithms

Due to time constraints and limited experience, the group acknowledges that there is an opportunity to incorporate more useful features to serve consumers if given the chance

OVERVIEW OF THE RESEARCH

INTRODUCTION

The project "Research, design and implementation of a designated washing machine for footwear" is the final graduation project conducted during the academic tenure It focuses on the design and fabrication of a shoe and sock washer, incorporating functions such as washing, drying, and disinfection.

SURVEY OF RELATED REQUIREMENTS

The group selected a target survey population with an age range of 23-35, representing a dynamic and young generation primarily employed in office jobs with stable incomes Interviews were conducted with the following questions:

• What do you usually do after work?

• What makes you comfortable when engaging in sports activities?

• Do you clean your shoes regularly?

• What requirements do you have when cleaning your shoes?

• What requirements do you have when cleaning your socks?

• What requirements do you have when choosing a shoe and sock washer?

After conducting the survey, the group compiled the requirements of potential customers as follows:

• Machine requirements: Price range from 5 to 15 million VND, durable material, long lifespan

• Washing quality requirements: Clean, fresh, bacteria elimination, dust-free soles, no shoe deformation, time and effort-saving

• Machine functionality requirements: Includes drying function, multiple washing modes, auto/manual mode

REFERENCES TO RELATED TOPICS

2.3.1 HOME USE 5KG BUTTON SWITCH SHOES WASHER/SHOES WASHING

Figure 2.1 Home use 5kg button switch shoes washer/shoes washing machine

• Clean the stain on shoes thoroughly and will not damage the shoes

• With automatic Ozone generator, will be replaced by hydrogen peroxide when start,

• can clean the odor within the shoes thoroughly clean and disinfect the shoes, generally reduce the bacterial infection

• This product is very easy to use, fast, safe, release your hand

• Can be wash a wide range of shoes, such as fabric shoes, leisure shoes, sports shoes

Description of operation: Each cycle can wash up to 2 pairs of shoes, which are placed in the empty compartments through 4 openings The machine completes a washing cycle in approximately 30 - 40 minutes It is compatible with various types of shoes such as fabric shoes, sports shoes, sneakers, etc It can effectively remove odors, leaving the shoes clean and sanitized

• Capacity: 5kg (2 pairs of shoes)

• Water consumption: Approximately 100L per washing cycle

• Pros: Effectively cleans shoes, relatively short washing time Can wash 2 pairs of shoes at once

• Cons: Consumes a considerable amount of water, large size and heavy weight of the machine

2.3.2 SMART DOOR SHOE WASHING MACHINE [5]

Figure 2.2 Smart door shoe washing machine

Introduction: The compact design of this shoe washing machine saves space in your home It is easy to move around and can be conveniently taken on travels The machine features a large, soft nylon brush that effectively removes stubborn stains and eliminates bacteria causing unpleasant odors, giving your shoes a fresh look With its elegant color, it not only serves as a practical household item but also adds a touch of sophistication to your living space The smart shoe washing machine is designed for simple operation and is suitable for users of all ages, from children to the elderly It is completely insulated and ensures user safety

Operation description: Simply place the shoes to be washed into the machine, then pour water directly into it or use a water supply hose Adjust the water level appropriately, as the machine operates at high speeds, creating abundant foam during the washing process Select the desired washing mode and set the timer until the cycle is complete

• Water consumption: 3-5L per washing cycle

• Pros: Lightweight, compact size Low water consumption Adjustable washing time

• Cons: May not completely remove tough stains on shoes The plastic material may become brittle and prone to damage over time

2.3.3 CLING DOUBLE BUCKET SHOE WASHING MACHINE SMALL HOUSEHOLD

SMART LAZY PERSON BRUSHING SHOES DRYING AND DEHYDRATING [6]

Figure 2.3 Cling double bucket shoe washing machine small household smart lazy person brushing shoes drying and dehydrating Introduction:

• Wash and spin dry clothes simultaneously You can directly transfer clothes from the washing machine to the spinning barrel, or you can run both sides simultaneously to complete the washing and spinning process

• Powerful flowing water surrounds the clothes for thorough washing, breaking down tough stains and imitating the physical handwashing method to minimize damage to the clothes

• Deep cleaning, 360-degree blue light, efficient, safe, and healthy Provides a clean and worry-free experience, integrated washing and large capacity, independent water drain barrel

• Independent drying barrel made of ABS material, powerful drying function, rust- resistant, corrosion-resistant, long lifespan, and environmentally friendly motor protection

• The machine body is made of rust-proof plastic, ensuring durability and a clean and quiet operation Compact size, low power consumption, and energy-saving

• Capacity: 5kg (2 pairs of shoes)

Operation description: Wash and spin dry simultaneously Shoes can be directly transferred from the washing machine to the spinning barrel, or both sides can be run simultaneously to complete the washing process

• Pros: Moderate weight and size Can wash 2 pairs of shoes at once Has a spin-drying mode Can run both functions simultaneously

• Cons: Made of plastic material, which may not be durable over a long period of use 2.3.4 AUTOMATIC BOOT CLEANER AND AUTOMATIC SHOE CLEANER [7]

Figure 2.4 Automatic boot cleaner and automatic shoe cleaner Introduction:

Glikon’s footwear sole cleaning machines products mainly consist of many parts They include stainless steel body, motor, water pump, boot brush, controller, radar sensor, water level sensor, filter plate, water absorption pad, and so on In the cleaning station area, side brushes are soaked in the water tank and scrub the soles with enough water Customers walk over the belt of boot brush, and then the boot and shoe soles can be cleaned After that, go to the quick-dry area, absorbent cotton does its job and absorbs excess water from soles of boots and shoes Finally, it achieves a dust-free and dry effect

The water inlet and drain of our stainless-steel boot cleaners are fully automatic Also, they have automatic induction, and cleaning machines will stop when people leave There is no need to stay, go through the heavy-duty boot washer, and remove 99% of the dirt from the sole Clean the dirt on soles of your boot and shoes at the entrance to keep them clean The automatic boot scrubber helps provide a clean and comfortable production and office environment By using this product cleaning solution, it then meets the clean environment demand

Operation description: Pour the cleaning solution into the machine, and the attached brush mat will move like a treadmill to clean the soles

• Pros: Provides thorough cleaning of the soles

• Cons: Only cleans the sole part

2.3.5 DEERMA SHOE DRYER AND STERILIZER [8]

Figure 2.5 Deerma shoe dryer and sterilizer Introduction:

The Deerma DEM-HX10 Shoe Dryer and Deodorizer is a compact and lightweight device, making it convenient to store in any corner of the house without taking up much space The unique U-shaped air outlet design allows the dryer to dry two pairs of shoes simultaneously, addressing the need for shoe drying on rainy days It offers multiple drying modes to suit various types of shoes The consistent 65ºC hot air flow penetrates through the layers of leather in the shoes, while the device releases O3 to evenly distribute within the shoes, immediately capturing odor-causing factors and eliminating 99.9% of common bacteria such

10 as Staphylococcus aureus and candida albicans It quickly removes moisture and keeps the shoes dry

You don't need to worry about damage to your shoes as the dryer carefully controls the temperature of the hot air to maintain their softness even after multiple drying cycles The air will continuously flow within approximately 15 seconds The exhaust door divides the airflow into three stages and rotates 360º, ensuring fast and thorough drying of the entire shoe Technical specifications:

Ingredients: Sodium Hydroxide, dodecylbenzene, sodium lauryl ether, water

After researching existing designs, the team relied on the available mechanisms from previously functioning machines to design and fabricate a unique mechanism that reflects the team's own characteristics

MECHANISM SKETCH

Figure 2.8 Overall machine from a different perspective

Figure 2.10 Inside shoes washing machine

Figure 2.12 Inside socks washing machine

THEORETICAL FOUNDATION

ELECTRICAL COMPONENTS

This is a high-pressure water pump used to increase the water pressure for shoes and socks, removing stubborn stains

Figure 3.1 Sinleader pump Table 3.1 Technical specifications pump

3.1.2 NORMALLY CLOSED ELECTRIC SOLENOID VALVE

The normally closed electric solenoid valve remains closed in its default state, preventing water flow through the valve When it receives an electrical signal based on the principle of electromagnetic attraction, the solenoid lifts the valve open, allowing water to flow through

Figure 3.2 Electrical solenoid valve Table 3.2 Technical specifications electric solenoid valve

The motor is used to rotate the brush assembly for cleaning the sole of the shoes

Figure 3.3 GA25 170RPM gear motor Table 3.3 Technical specifications GA25 170RPM gear motor

The electronic relay is used to control the on/off state of electrical devices when receiving signals from Arduino

Figure 3.4 Electronical relay Table 3.4 Technical specifications electronic relay

Trigger Level High and Low

Used to kill bacteria present in sweat within socks and shoes using ultraviolet (UV) light

Table 3.5 Technical specifications zako UV light

Used to dry shoes and socks

Figure 3.6 Heat dryer Table 3.6 Technical specifications heat dryer

Used for signaling completion of various modes

Figure 3.7 Buzzer Table 3.7 Technical specifications buzzer

PROBLEM FORMULATION

The theory of moment, also known as torque, is based on the principle that the rotational effect (or moment) of a force acting on an object is directly proportional to the force magnitude and the perpendicular distance from the axis of rotation to the line of action of the force

To withstand the rotational torque of the 300-gram brush assembly, we need to select a motor with a load factor coefficient

• 𝑀⃗⃗ 𝐵𝑟𝑢𝑠ℎ𝑙𝑜𝑎𝑑 : Required load torque of the brush assembly (N.m)

• 𝑑 : The vector representing the distance from the center of the brush to the point of application of force 𝐹 is called the moment arm of force 𝐹 (m)

The force exerted by the brush assembly on the rotational axis:

We choose a safety factor of 1.5

So, the value of the applied force multiplied by the factor of safety is:

3 × 1.5 = 4.5 (𝑁) Apply formula number 3.1, the moment of the applied force to lift the moment arm is:

In that case, we can use a motor with a torque greater than 1.01 Nm

To transmit the indirect torque from the brush shaft to the motor shaft, the team has studied various mechanisms such as gear transmission, chain transmission, belt transmission…

Each mechanism has its own advantages and disadvantages However, in this project, the team has used a belt transmission system

Belt transmission system, also known as belt drive, is a method of power transmission used in various mechanical systems to transfer rotational motion and power from one component to another It involves the use of flexible belts, typically made of rubber, synthetic materials, or even metal, running over pulleys or sheaves

In a belt transmission system, the driving pulley (or driver) is connected to a power source, such as an engine or motor As the driving pulley rotates, it causes the belt to move, and the rotational motion is transmitted to the driven pulley (or follower) The driven pulley, in turn, transfers the motion and power to the connected component, such as a conveyor, fan, compressor, or other machinery

Advantages of belt transmission include:

• Smooth operation: Belts provide a cushioning effect, reducing vibrations and shock loads between the driving and driven components

• Slip prevention: Belts can slip slightly if there is an overload or sudden increase in resistance, preventing damage to the system

• Noise reduction: Compared to direct gear transmissions, belt drives often produce less noise during operation

• Simple design and installation: Belt drives are relatively easy to install and require minimal maintenance

• Absorption of misalignments: Belts can tolerate slight misalignment between pulleys, which can be beneficial in some applications

To calculate the torque and rotational speed, we have selected suitable pulleys based on the desired usage Then, we can calculate the transmission ratio using the following formula:

Driving pulley has 20 teeth, and driven pulley has 60 teeth

 Hence, the transmission ratio is 3:1, which means the rotational speed decreases by 3 times and the load torque increases by 3 times

 Therefore, we choose a motor with a load torque of 0.34 N.m (calculated as 1.01/3 = 0.34 N.m)

Belt tension refers to the force applied to a belt in a mechanical system to keep it tight and prevent slippage Belts are used in various machines, such as engines, conveyor systems, and power transmission systems, to transfer rotational motion and power from one component to another

Maintaining the correct belt tension is crucial for the efficient operation and longevity of the belt and the entire system If the tension is too loose, the belt may slip and cause a loss of power transmission On the other hand, if the tension is too tight, it can put excessive stress on the belt and other components, leading to premature wear and failure

The proper belt tension is determined based on the specific requirements of the system,

21 considering factors such as the type of belt, the amount of power being transmitted, the speed of operation, and the distance between pulleys Tensioning devices, such as tensioners or idlers, are often used to adjust and maintain the appropriate belt tension in different applications

Regular inspection and adjustment of belt tension are essential parts of preventive maintenance to ensure the reliable and efficient operation of machinery that relies on belt drives

The belt tension between the 20-tooth and 60-tooth pulleys will be calculated based on the available equipment and materials suitable for the team's requirements We have the formula for calculating and selecting the belt based on the following diagram:

Figure 3.10 Belt model around two pulleys

L is the belt circumference; c is the distance between the centers of the two pulleys;

𝑑 1 and 𝑑 2 are the diameters of pulley 1 and pulley 2, respectively

For the chosen pulleys, we have the measured diameters: d1 = 12.2 mm, d2 = 43.9 mm And the GT2 – 200mm belt is used

Flow rate, also known as discharge rate, is a measure of the quantity of fluid (liquid, gas, or even solid particles) that passes through a particular point in a given amount of time It is typically expressed as volume per unit time and is an important parameter in fluid dynamics, engineering, and various industries

Flow rate can be determined using various methods, such as flow meters, pressure differentials, or by measuring the velocity of the fluid and the cross-sectional area through which it flows The flow rate of a fluid can be constant or vary with time depending on the application and the characteristics of the system

Flow rate is a critical parameter in many practical applications, including water supply and distribution, wastewater management, oil and gas production, air conditioning, hydraulic systems, and more Accurate measurement and control of flow rate are essential for efficient operation and optimization of these systems

We have the formula for water flow rate:

A: Cross-sectional area v: Flow velocity

We choose the Sinleader pump with a water flow rate of 5 LPM (Liters per minute)

3.2.4.1 WATER FLOW RATE FOR SHOE WASHER

For the shoe washer, we have a water supply from the Sinleader pump and valve 21

Valve 21: The flow rate ranges from 10 to 13 LPM

Sinleader Pump: The flow rate ranges from 4 to 5 LPM

The amount of water flowing through the shoe washer after 15 minutes:

3.2.4.2 WATER FLOW RATE FOR SOCK WASHER

For the sock washer, we have a water supply from the Sinleader pump

Sinleader Pump: The flow rate ranges from 4 to 5 LPM

The amount of water flowing through the sock washer after 15 minutes:

Conclusion: After the selection and calculations, the chosen devices meet the requirements of the team for this project

DESIGN AND IMPLEMENTATION

BLOCK DIAGRAM

Central processing block, providing signals to the system

To supply power an entire system

To supply water an entire system

Used to control PWM of motor and direction of rotation

The motor for rotating the brush assembly

Dryer for drying shoes and socks

The relay for controlling the opening and closing of the water valve

The relay for switching on/off electrical devices

The 360-degree rotating valve that creates water pressure

The buzzer that sounds when the mode is completed

Figure 4.1 Block diagram full system

Operating principle: The relay, valve, and pump work together to pump water through a 21mm radius pipe into pre-designed forms and deliver water to the shoes and socks In the shoe washer section, there is an additional rotating brush that performs the shoe sole cleaning in both forward and reverse directions The 360-degree valve sprays high-pressure water jets to clean the exterior dirt on the shoes The UV lamp and dryer devices then dry and sanitize the washed items When all tasks are completed, the buzzer will sound, and the LCD screen will display the status.

RELATED MACHINE REQUIREMENTS

Requirements: The machine should have durable materials, a simple design, flexibility, easy installation and maintenance, attractive appearance, and affordable cost

• Material selection for the machine includes: Aluminum extrusion 40x40 for the frame and Mica for the casing

• Reason for use: To meet the needs for cost-effectiveness, lightweight, eye-catching appearance, and ease of fabrication

Figure 4.3 Mica 4.2.1 DESIGN USING SOLIDWORKS SOFTWARE

Figure 4.6 Washing machine for socks

Figure 4.7 Washing machine for shoes 4.2.2 MECHANICAL DRAWING

Figure 4.9 Exploded view of the washing machine for socks

Figure 4.10 Exploded view of washing machine for shoes

Figure 4.11 Inside shoes washing machine

Figure 4.13 A member of the team is cutting water pipes

ELECTRICAL DESIGN

Figure 4.14 Electric block diagram 4.3.2 ELECTRICAL EXPLANATION

The power blocks will supply power to the electrical devices and the entire system

The relay can be considered as an electrical switch

When the controller receives a signal and sends a high-level signal to the relay, the relay switch will close and complete the circuit At the same time, the device is provided with a positive terminal When the relay switch closes, the current will flow through the device and return as a negative signal, creating a closed circuit and allowing the device to operate normally

Arduino Mega 2560 is a microcontroller board based on the ATmega2560 processor It is one of the most popular and powerful members of the Arduino family The board is designed to provide more input/output (I/O) pins, more memory, and greater processing capabilities compared to other Arduino boards, making it suitable for complex and demanding projects

Overall, the Arduino Mega 2560 is an excellent choice for projects that require more processing power and extensive I/O capabilities than what is offered by standard Arduino boards

Figure 4.15 Arduino mega 2560 Specifications of the Arduino Mega 2560:

• Digital I/O Pins: 54 (of which 15 provide PWM output)

• DC Current per I/O Pin: 20 mA

• DC Current for 3.3V Pin: 50 mA

• Flash Memory: 256 KB of which 8 KB is used by the bootloader

The L298N motor driver module is capable of controlling up to 2 motors as it integrates two H-bridge circuits The module also includes built-in protection diodes and a 7805 voltage regulator IC, which provides a 5VDC power supply for other modules (only if the power supply is less than 12VDC)

The L298N motor driver module is user-friendly, cost-effective, easy to install, and an optimal choice within its price range It offers a convenient solution for controlling DC motors

The L298N is a dual full-bridge driver commonly used for controlling motors Here are its specifications:

• Maximum current per H-bridge: 2A (allowing up to 2A for each motor)

• Power consumption: 20W (at a temperature of 75°C)

Below are the functions of the pins on the L298N motor driver:

• Enable 1, Enable 2 (EN1, EN2): These pins are used to enable or disable the motor outputs

• Input 1, Input 2 (IN1, IN2): These pins control the direction of Motor 1

• Input 3, Input 4 (IN3, IN4): These pins control the direction of Motor 2

• Output 1, Output 2 (OUT1, OUT2): These pins are the output pins for Motor 1

• Output 3, Output 4 (OUT3, OUT4): These pins are the output pins for Motor 2

• VCC: This pin is used to provide the logic voltage for the internal circuitry of the L298N

• GND: This pin is the ground reference for the circuit

• VCC1, VCC2: These pins are used to provide the power supply for the motors

By controlling the input pins (IN1, IN2, IN3, IN4), you can control the direction of rotation for the motors The enable pins (EN1, EN2) are used to enable or disable the motor outputs, and the output pins (OUT1, OUT2, OUT3, OUT4) provide the motor control signals

The LCD I2C display is a type of LCD module that uses the I2C (Inter-Integrated Circuit) communication protocol for data transfer It simplifies the connection between the microcontroller and the LCD module by reducing the number of required pins

The I2C communication protocol uses two wires, SDA (Serial Data) and SCL (Serial Clock), to transmit data and control signals between the microcontroller and the LCD module The functions of the pins on an LCD I2C display module typically include:

• VCC: This pin is connected to the positive power supply (typically 5V or 3.3V) to power the LCD

• GND: This pin is connected to the ground reference of the circuit

• SDA (Serial Data): This pin is used for bidirectional data transfer between the microcontroller and the LCD module

• SCL (Serial Clock): This pin is used for clock synchronization between the microcontroller and the LCD module

• A0 (Address Select): This pin is used to select the I2C address of the LCD module when multiple devices are connected on the same I2C bus

• LED+: This pin is connected to the positive terminal of the LED backlight, if applicable

• LED-: This pin is connected to the negative terminal of the LED backlight, if applicable

• Number of Characters: This can vary, but a common configuration is 16 characters per line with 2 lines (16x2)

• Communication Protocol: I2C (also known as I2C or TWI - Two-Wire Interface)

• I2C Address: Most I2C LCD screens have configurable addresses, allowing you to connect multiple displays to a single I2C bus The default address is usually 0x27 or 0x3F

• Backlight: Usually, I2C LCD screens come with a built-in LED backlight that can be controlled separately from the text display

• Operating Voltage: Typically 5V, but some modules are designed to be compatible with 3.3V systems as well

• Contrast Adjustment: Many I2C LCD screens provide a contrast adjustment potentiometer to control the contrast of the displayed text

• Viewing Angle: Most LCD screens have a wide viewing angle, making it easier to read the displayed content from different positions

• Connection Interface: The I2C LCD screen module usually has a standard 16-pin header or connector for easy connection with jumper wires or a custom interface

• Display Controller: The LCD screen module is typically equipped with an integrated display controller, such as the popular HD44780 or compatible controllers

Figure 4.22 Arduino, LCD and Button

CONTROL

Explanation of the flowchart: When setting up shoes and socks in their respective compartments, we press the power button to start the machine We can choose from wash modes 1 to 9:

Mode 1: Wash and dry the entire system

Mode 2: Wash and dry shoes only

Mode 3: Wash and dry socks only

Mode 4: Wash the entire system

Mode 7: Dry the entire system

After selecting the desired mode, we press the Start button to execute the corresponding command The emergency stop button can be pressed to halt the entire circuit in case of an emergency When the selected mode is completed, a buzzer will sound as a signal, and all information will be displayed on the 16x2 LCD screen

The subprograms can be explained as follows:

In different modes, different subprograms will execute different commands

For example, in Mode 4: The UV Lamp and dryer blocks will not be turned on, while in Mode

7, the Pump, relay valve, and brush will turn off

When no mode is selected, you can use the manual mode

The available manual modes in the machine are: Clockwise brush, counterclockwise brush, pump water, dryer turn on, and UV lamp turn on.

IMPLEMENTATION

Figure 4.25 Washing machine for footwear Table 4.2 Specifications washing machine for footwear

4.5.1 IMPLEMENTATION WASHING MACHINE FOR SOCKS

Figure 4.26 Washing machine for socks Table 4.3 Specifications washing machine for socks

4.5.2 IMPLEMENTATION WASHING MACHINE FOR SHOES

Figure 4.27 Washing machine for shoes Table 4.4 Specifications washing machine for shoes

EXPERIMENTS AND ANALYSIS

EXPERIMENTS

To determine the appropriate washing time and assess cleaning effectiveness, the team conducted a series of small experiments using the manual mode with the following steps:

Table 5.1 Perform the test to clean the shoe soles

BEFORE CLEANING AFTER CLEANING LEVEL OF

Table 5.2 Perform the test on the outside and inside of the shoes

Table 5.3 Perform the test for drying time

Table 5.4 Perform the test on the outside and inside of the socks

Table 5.5 Perform the test for drying time

After conducting the small test experiments, the team proceeded to perform washing mode 1 in order to further test and analyze the results

Choose shoes that have dirt marks like dust on the sole, dirt stains on the upper part of the shoe, and socks with sweat, bacteria, and moisture Proceed with the experiment in mode 1, wash and dry the entire system Set up the shoes in the machine

Figure 5.1 Put shoes into the washing machine

Set up the socks in the machine

Figure 5.2 Put socks into the washing machine Choose a mode for the machine

Figure 5.3 LCD displays the mode

The brush is currently cleaning the sole, and the 360-degree nozzle is cleaning the upper part of the shoe by creating high-pressure water jets

Figure 5.4 Shoes are being cleaned

Figure 5.5 Disinfecting the socks The experiment has been completed

Figure 5.6 LCD displays mode 1 completed

To collect the results from the washing machine experiment

We have a summary table of the results:

ANALYSIS

The cleanliness level of both shoes and socks only reached 70%, primarily due to the initial requirement of minimizing friction to avoid affecting the materials (causing deformation of the shoes and stretching of the socks) However, the experiment still met user requirements such as cleaning the shoe soles, disinfection, drying, and providing a pleasant scent

Other measured parameters met the user's requirements adequately

RESULTS – OBSERVATIONS – EVALUATION

RESULT

After 4 months of research, study, design, and manufacturing, our team has successfully completed the project We have fully accomplished our objectives and carried out the practical implementation

Figure 6.1 Design machine in Solid Work

Figure 6.2 Washing machine for footwear

The team's product utilizes an Arduino microcontroller along with 10 push buttons and various sensors to display different modes on an LCD screen

Figure 6.4 Guideline for user The contributions of the product are as follows:

• Timesaving in traditional manual cleaning: The product helps save time in cleaning shoes and footwear compared to the conventional manual approach This brings convenience and efficiency, especially when dealing with multiple pairs of shoes simultaneously

• Reduced physical effort during regular cleaning: Thanks to the automatic nature of the product, users do not need to exert as much physical force and effort during the shoe cleaning process This helps reduce fatigue and the intensity of labor required in manual shoe cleaning

Overall, the product significantly improves the shoe cleaning process by saving time and reducing physical effort, making it a valuable and practical solution for users The team has added supplementary user instructions for the product These instructions aim to provide comprehensive guidance on effectively and efficiently utilizing the product's features and functionalities The user manual covers various aspects of the product's operation

With the inclusion of detailed and easily understandable instructions, the team has enhanced the user experience, making it simpler for customers to utilize the product to its full potential The additional user guidance adds value to the overall product, making it more user-friendly and accessible to a broader audience.

OBSERVATIONS – EVALUATION

After completing our final student project, we have learned a great deal, and this journey has been instrumental in shaping each team member into becoming a skilled engineer for the future

The lessons we have learned extend beyond just specialized knowledge and theoretical concepts We have also acquired essential skills, such as teamwork, time management - effectively managing our time to work on the project even after long days at the office Discipline, self-discovery, and a thirst for learning are all indispensable traits for an engineer within a collective These qualities are what our mentors at Ho Chi Minh City University of Technology and Education expect from their students

This experience has provided us with an opportunity for further development ahead, a chance to unleash our creativity, and transform our ideas into products that serve society Nevertheless, to walk the path of roses, we have also had to face thorny challenges But whenever we encountered these seemingly insurmountable issues, we came together as a team, brainstormed multiple solutions, contributed ideas, and always maintained an optimistic and determined spirit This resilience and positive attitude are truly commendable qualities displayed by each team member

Through this journey, we have realized the value of perseverance, collaboration, and an unwavering commitment to our goals As we step into the future, we do so with a sense of pride in our accomplishments and a mindset geared towards continual growth and improvement

CONCLUSION AND RECOMMENDATION

OBSERVATIONS – EVALUATION

After a period of implementation, the author group has successfully completed the "Shoe Washing Machine" project, meeting all the initial requirements set by the group

Accomplishments of the group in the project include:

• Conducting customer needs surveys, identifying target users, and setting completion goals

• Conducting research on relevant topics and identifying the market

• Defining the problem, assessing its significance, and exploring various approaches through discussions with other students to find solutions

• Building teamwork skills, contributing ideas, and working together to execute the project

• Calculating parameters and mechanisms to select suitable equipment

• Creating preliminary sketches, 2D drawings, and 3D designs

• Successfully manufacturing the machine, installing it, and conducting evaluation tests

In addition to the achievements, the group acknowledges some shortcomings due to a lack of knowledge in the field and practical experience, which led to certain oversights during the project, such as the absence of feedback from real users, suboptimal machine size, and a lack of objective evaluation.

RECOMMENDATION

The team has completed the design and construction of the machine, but there are still some shortcomings In the future, the team hopes to gain more recognition for the machine, as it can significantly reduce time and effort in the process of shoe and sock cleaning, contributing to a more efficient and convenient daily life Additionally, the team aims to integrate more convenient features for consumers, enhance the quality of cleaning, and provide better customer service by incorporating recognition filters, IoT technology, and other advancements to elevate the level of convenience in people's lives

The team is eager to contribute their energy, creativity, and passion as young individuals to ignite the flame of pride as students of the Ho Chi Minh City University of Technology and Education

[1] Wikipedia.org, Second Industrial Revolution, https://en.wikipedia.org/wiki/Second_Industrial_Revolution, access on July 15th, 2023

[2] khoahocphattrien.vn, Những chiếc máy giặt đầu tiên, https://khoahocphattrien.vn/kham- pha/nhung-chiec-may-giat-dau-tien/20190808114325518p1c879.htm, access on July 15th,

[3] asiatechjsc.vn, Tổng Quan Về Thị Trường Giặt Là Tại Việt Nam Năm 2021 Xu Hướng Thị Trường Giặt Là Trong Những Năm Gần Đây, https://asiatechjsc.vn/blogs/news/tong- quan-thi-truong-giat-la-tai-viet-nam-2021, access on July 15th, 2023

[4] alibaba.com, Home Use 5 Kg Button Switch Shoes Washer /Shoe Washing Machine, Home Use 5 Kg Button Switch Shoes Washer /shoe Washing Machine - Buy Shoes Washer,Automatic Shoe Washing Machine,Coin Shoe Polishing Machine Product on Alibaba.com, access on July 15th, 2023

[5] shopee.vn, Máy Giặt GIÀY Cửa Thông minh siêu sạch(4.5kg)- Tặng máy sấy giày cao cấp, Máy Giặt GIÀY Cửa Thông minh siêu sạch(4.5kg)- Tặng máy sấy giày cao cấp| Shopee Việt Nam, access on July 15th, 2023

[6] amazon.com, CLIng Double Bucket Shoe Washing Machine Small Household Smart Lazy Person Brushing Shoes Drying and dehydrating, Amazon.com: CLIng Double Bucket Shoe Washing Machine Small Household Smart Lazy Person Brushing Shoes Drying and dehydrating : Appliances, access on July 15th, 2023

[7] glikon.com, Everything You Must Know Of Boot Cleaner Machine, Boot cleaner machine

| Shoe sole cleaner| Automatic boot scrubber (glikon.com), access on July 15th, 2023

[8] shopee.vn, Máy SẤY GIÀY DIỆT KHUẨN Deerma HX10 HX20 HX10W- Fullbox, Máy SẤY GIÀY DIỆT KHUẨN Deerma HX10 HX20 HX10W- Fullbox | Shopee Việt Nam, access on July 15th, 2023

[9] cokhiviethan.com.vn, Momen lực là gì? Công thức tính momen lực? https://cokhiviethan.com.vn/momen-luc-la-gi-cong-thuc-tinh-momen-luc.html, October 6th,

[10] Trịnh Chất, Lê Văn Uyển, Tính toán thiết kế hệ dẫn động cơ khí (tập một), Nhà xuất bản Giáo dục, pp 53, 2006

[11] Trịnh Chất, Lê Văn Uyển, Tính toán thiết kế hệ dẫn động cơ khí (tập một), Nhà xuất bản Giáo dục, pp 69, 2006

[12] wasaco.vn, Công thức tính lưu lượng từ A-Z, https://wasaco.vn/blog/cong-thuc-tinh-luu-

[13] arduino.vn, Giới thiệu Arduino mega 2560, http://arduino.vn/bai-viet/542-gioi-thieu- arduino-mega2560, access on July 18th, 2023

[14] components101.com, L298N Motor Driver Module, https://components101.com/modules/l298n-motor-driver-module, access on July 18th, 2023

[15] arduinokit.vn, Tổng quan LCD 16×2 và giao tiếp I2C LCD sử dụng Arduino, https://arduinokit.vn/giao-tiep-i2c-lcd-arduino/, access on July 18th, 2023.

Appendix 1: Table Survey of user requirements

01 Kha Duy Sạch sẽ và vẫn giữ được form giày

Giá thành hợp lí (15 triệu), bền, tiện

02 An Hoài Sạch, thơm và khô ráo Bền, an toàn cho người dùng

03 Hải Sạch, thơm Dễ dùng, giá tầm 20 triệu

04 Khánh Sạch, ko tác động với da nhiều

05 Nam Khô ráo, thơm tho An toàn trẻ em

06 Hải Sạch trong và ngoài Dễ sử dụng, nhỏ gọn

07 Hoàng Long Thơm, sạch, khô Giá cả phù hợp, vận chuyển dễ dàng khi cần thiết

08 Sơn Đoàn Không tác động mạnh đến giày, sạch, thơm

Máy thông minh, nhiều chế độ, giá phù hợp

09 Phước Hải Ráo, sạch, thơm Sử dụng tốt

10 Trọng Hạn chế ẩm, sạch Tính linh hoạt, độ bền

11 Phúc Sạch, thơm Sử dụng an toàn và dễ

12 Sơn Giữ dáng giày, sạch, thơm Hiệu quả cao, tính thực dụng

13 Hoàng Diệt 99% vi khuẩn khó chịu, sạch

Máy vận chuyển dễ, bền, đẹp

14 N Thạch Khô ráo, sạch, thơm tho Phù hợp với túi tiền và độ hiệu quả

15 Phúc Giữ form giày, giặt cả đế giày Đẹp, dễ dùng, phù hợp với ví tiền

16 Phú An Có diệt khuẩn, nấm móc Giá thành hợp lí, hiệu quả cao

17 Sơn Sạch, diệt khuẩn Độ bền cao

18 Linh Đông Vệ sinh phần đế giày kĩ Máy tiện, giặt nhanh, máy giá cỡ 15tr

19 T Long Diệt vi khuẩn và mùi hôi Tính tiện ích, giảm nhân lực

20 Tuấn Giặt sạch, khô Giá ok, đẹp, lạ

21 Sơn Sạch, đẹp, thơm Tính thẩm mỹ và hiệu quả

22 Trung Thơm, khô, sạch, diệt khuẩn Hiệu quả, giá phù hợp, dễ di chuyển

23 Hà Trúc Khô ráo, sạch sẽ, diệt khuẩn Chất lượng hàng đầu

24 Kiệt Thơm, sạch, ổn Độ bền và chất lượng giặt

25 Lê Hiếu Sạch, thơm, không hư da Bền, hậu đãi tốt

26 Văn Sạch, khô ráo Thời gian giặt 30p, có thể sấy khô giày và vớ

27 Trang Sạch sẽ, có mùi thơm Thời gian giặt 20p, dễ thao tác, giặt nhiều đôi

28 Bảo Khử mùi hôi, khô thoáng, sạch sẽ

Máy dễ di chuyển, nhiều chức năng

29 Thương Thơm tho, sạch, khô ráo Thời gian giăt từ 10 đến

Giày và vớ được giặt sạch, khô ráo, thoáng mát

Giá cả phù hợp với sinh viên, vận chuyển dễ dàng khi cần thiết

31 Vy Vy Sạch sẽ, khô ráo hoàn toàn Có thể lấy ra mang luôn sau khi giặt

32 Hiền Giày vớ sạch, có mùi thơm Giặt nhanh tầm 15-20p

33 Nhi Không bị hỏng giày, sạch sẽ Dễ sử dụng

34 Quân Giày vớ được vệ sinh hoàn toàn

Gía cả hợp lí, chức năng dễ hiểu, dễ thao tác

35 Trí Giữ form giày, giặt cả đế giày

Giày được vệ sinh sạch sẽ, khô hoàn toàn, thơm tho

Tầm 25 phút là giày được giặt sạch, có thể đem ra sử dụng luôn

37 Khoa Khử mùi hôi, diệt khuẩn, sạch sẽ

Thời gian giặt tầm 20 phút, không gây ra tiếng ồn to

38 Khôi Đinh Sạch sẽ, không cần khô(tự phơi khô)

Giặt nhanh, dễ sử dụng

Sạch, thơm, khô ráo Máy dễ thao tác, nhiều chế độ giặt khác nhau, giặt nhanh

Giày được giặt sach, được làm khô mà không cần đem đi phơi

Máy nhẹ, giăt tầm 15 phút, giá cả hợp lí

41 Hoàng Long Sạch sẽ, không gây ảnh hưởng chất liệu giày

Có thể giặt nhiều đôi

Sạch, khô ráo, không để lại mùi bên trong giày và vớ sau khi giặt

Máy dễ dùng, giặt nhanh, giá cả phù hợp

Sạch sẽ và thơm Nhiều chức năng, dễ dàng thao tác, giặt tầm 20 đến 25p

44 Chiến Vệ sinh giày và vớ sạch sẽ, khử được mùi hôi

45 Ngọc Thảo Giày và vớ được vệ sinh sạch, vớ giặt không bị dãn

46 Nghị Phạm Sạch, khử mùi hôi Giá cả rẻ, giặt sạch như giăt tay

Khô ráo, sạch sẽ, diệt khuẩn Giặt nhanh, máy không quá to, không có gây ra có nhiều tiếng ồn, dễ sử dụng

48 Hoàng Phúc Sạch, khô ráo Giặt tầm 20-25p, có hướng dẫn sử dụng

Giày được vệ sinh sạch sẽ, được làm khô, không còn mùi hôi

Giá thành rẻ, giặt được nhiều chế độ, nhiều loại giày

Bên ngoài sạch, Bên trong khô thoáng Độ bền cao, dễ thao tác, nhiều chức năng giặt khác nhau cho từng loaij giày

51 Văn Sạch, khô ráo Thời gian giặt 30p, có thể sấy khô giày và vớ

52 Trang Sạch sẽ, có mùi thơm Thời gian giặt 20p, dễ thao tác, giặt nhiều đôi

53 Bảo Khử mùi hôi, khô thoáng, sạch sẽ

Máy dễ di chuyển, nhiều chức năng

54 Thương Thơm tho, sạch, khô ráo Thời gian giăt từ 10 đến

55 Cường Sạch, thơm, không hư da Giặt được cả giày và vớ, giá

56 Trang Sạch, không mùi hôi Thời gian giặt không quá lâu (30-45p), dễ sử dụng

57 Huy Vũ Sạch cả trong lẫn ngoài, giữ form

Giá hợp lý, dễ dùng

58 Thùy Dương Thơm tho, sạch, khô ráo Máy gọn nhẹ, giá phải chăng

59 Thư Sạch, thơm Giá rẻ, bền, dung lâu dài

60 Linh Không cần quá sạch, thơm là được

Dễ sử dụng, giá không thành vấn đề

61 Hên Sạch và thơm Giặt nhanh cả giày và vớ

62 Ca Sạch Giặt nhanh, dễ sử dụng

63 Minh Trang Không xù vải, không hư form

Giặt nhẹ, giá hợp lý

64 Lan Sạch đế giày, thơm Dễ sử dụng, máy không quá to

65 Ngọc Không hư da giày Giặt nhanh, giặt giày và vớ, máy gọn

66 Dũng Khô ráo, sạch sẽ, diệt khuẩn Máy bền, dễ sử dụng

67 Đào Sạch, thơm An toàn với trẻ em

68 Duy Sạch, khô ráo Máy gọn nhẹ, giặt nhanh

69 Huy Không hư da giày Giặt nhẹ, nhanh

70 Khánh Duy Sạch đế giày, thơm tho Giá hợp lý khoảng 10tr, dễ di chuyển

71 Quốc Sạch, thơm, khô ráo Nhiều chế độ giặt cho nhiều loại giày

72 Trinh Sạch sẽ và thơm Máy gọn nhẹ, dễ di chuyển

73 Lam Giữ form giày, giặt cả đế giày

Thời gian giặt nhanh (dưới

74 Trinh Giặt sạch và giày có mùi thơm

Máy gọn nhẹ, giá hợp lý

75 Hoàng Khử khuẩn mùi hôi, sạch Giặt kỹ, an toàn cho trẻ em

76 Thi Giặt sạch và khô ráo Máy dễ di chuyển, giá hợp lý cho sinh viên

77 Đăng Không hư da giày, đặt biệt phải sạch đế giày

Giặt kỹ, không cần quá nhanh

78 Thu Sạch và thơm Dễ sử dụng

79 Huy Thật sạch và khô Chất lượng tốt, bền, dễ sử dụng

80 Cường Sạch, thơm, không hư da Giặt được cả giày và vớ, giá

81 Trang Sạch, không mùi hôi Thời gian giặt không quá lâu (30-45p), dễ sử dụng

82 Nhiên Sạch và thơm Dễ sử dụng, giá ok

83 Gia Bảo Sạch, diệt khuẩn, sấy khô Bền, đẹp, giá phù hợp

84 Trí Trung Thơm, sấy khô, diệt khuẩn Bền, chất lượng

85 Quang Khô ráo, sạch sẽ, diệt khuẩn Giá hợp lí, đẹp, nhẹ, bền

86 Hà Hà Thơm Đẹp, bền

87 Bảo Ngọc Diệt khuẩn, sạch Linh hoạt, bền, đẹp

88 Hân Kiều Sạch, thơm, khô ráo Giá cả, chất lượng

89 Như Huỳnh Sạch toàn bộ Bền

90 Quỳnh Sạch và thơm Chất lượng cao

91 Hà Lan Không hư da giày, sạch Bền, dễ vận chuyển

92 Trường An Giày không mất form, sạch Dễ di chuyển trong mọi tình

93 Lý Tuấn Giày được diệt khuẩn, giữ form và sạch khô

Bên ngoài bên trong sạch sẽ và có mùi thơm ko bị gẫy fom giày

95 Kiều Sạch thơm tho Bền, an toàn người dùng

96 Trúc Giày được diệt khuẩn, khử trùng

Dễ sử dụng và an toàn

97 Hoàng Giày không bị biến dạng, sạch, thơm, khô thoáng

Máy dễ dùng, an toàn, bền và có tính linh hoạt cao

98 Giang Hà Sạch sẽ và thơm Bền, nhỏ gọn, dễ di chuyển và an toàn khi dùng

99 Ly Thơm, sạch Nhỏ gọn, đẹp, bền, dễ vận chuyển

100 Tuyết Nghi Sạch, khử mùi, khử khuẩn Bền, linh hoạt,

Assembly drawings: Paper size format structure: A1 Detailed drawings: Paper size format structure: A3

PART NAME DISCRIPTION 1 The Washing Machine For Socks 2 The Washing Machine For Shoes 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Ho Chi Minh City University of Technology and Education

Mr Pham Bach Duong Approved Checked Designer Full name Date Signature Material Unit mm

RESEARCH, DESIGN AND IMPLEMENTATION OF A DESIGNATED WASHING MACHINE FOR FOOTWEAR 1:3

Mr Pham Bach Duong THE WASHING MACHINE FOR FOOTWEAR

920 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

TOTAL DIMENTION OF THE WASHING MACHINE

815 905 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

TOTAL DIMENTION OF WASHING MACHINE

920 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

TOTAL DIMENTION OF WASHING MACHINE

5 7 8 6 ITEM NO PART NAME QTY 10 Transparent Front Door 1 11 Door Knob 1 12 Latch Lock 1 13 Front Frame 1 14 Floor Drain 1 15 Bottom Frame 1 16 Aluminum Frame 12 17 Floor 1 18 Right Frame 1

ITEM NO PART NAME QTY 1 Left Frame 1 2 Dryer 1 3 Sock Holder 4 4 Upper Frame 1 5 Top Cover 1 6 Handle 2 7 UV LED 1 8 Rear Frame 1 9 Hinge 2

ITEM NO PART NAME QTY 19 Water Pump 1 20 Solenoid Valve 1 21 Back Cover 1 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Mr Pham Bach Duong EXPLODED VIEW OF THE WASHING MACHINE FOR SOCKS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ITEM NO PART NAME QTY 1 Left Frame 1 2 Dryer 1 3 Top Plate 1 4 Top Frame 1 5 Brush 1 6 Solenoid Valve 1

ITEM NO PART NAME QTY 7 UV LED 1 8 Back Plate 1 9 Rear Frame 1 10 Transparent Front Door 1 11 Front Frame 1 12 Pipe 8 ITEM NO PART NAME QTY 13 Aluminum Frame 12 14 Floor 1 15 360 Degree Rotating Water Valve 1 16 Shoe Holder Model 4 17 Water Pump 1 18 Right Frame 1

17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Mr Pham Bach Duong EXPLODED VIEW OF WASHING MACHINE FOR SHOES

3 1 2 4 5 7 6 8 ITEM NO PART NAME DISCRIPTION 1 2 Way Right Angle PVC Pipe Fitting 2 3 Way PVC Pipe 3 Socks Holder Pipe 4 Pipe 21 5 Transparent Flexible Water Pipe 10 6 Water Pump 7 External thread fitting 21 8 Solenoid Valve 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Mr Pham Bach Duong THE PART FOR SOCKS HOLDER FORM

ITEM NO PART NAME DISCRIPTION 1 Shoes Holder Model 2 360 Degree Rotating Water Valve 3 Shoes Holder Pipe 4 Water Pump 5 Transparent Flexible Water Pipe 10 6 External thread fitting 21 7 3 Way PVC Pipe 8 Pipe 9 2 Way Right Angle PVC Pipe Fitting 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Mr Pham Bach Duong THE PART FOR SHOES HOLDER FORM

7 6 1 9 8 4 2 3 5 ITEM NO PART NAME DISCRIPTION 1 Broom Bristles 2 Timing Pulley GT2 60 Teeth 2mm Pitch 3 Vitme T8 4 Timing Belt 2mm 5 DC GM25 Motor 6 Timing Pulley GT2 20 Teeth 5mm Pitch 7 Pass DC GM25 Motor 8 L Corner 9 Broom Base 17/07/2023 Pham Tien Trong Scale Weight 1 Quantity

Mr Pham Bach Duong THE PART OF BRUSH

ALUMINUM FRAME (SOCKS) Mr Pham Bach Duong 1:6

RESEARCH, DESIGN AND IMPLEMENTATION OF A DESIGNATED WASHING MACHINE FOR FOOTWEAR mm Unit

Signature Date Full name Designer Checked Approved

Pham Tien Trong 17/07/2023 Shaped Aluminum

TRANSPARENT FRONT DOOR (SOCKS) Mr Pham Bach Duong 1:3

FRONT FRAME (SOCKS) Mr Pham Bach Duong 1:5

LEFT FRAME (SOCKS) Mr Pham Bach Duong 1:5

RIGHT FRAME (SOCKS) Mr Pham Bach Duong 1:5

REAR FRAME (SOCKS) Mr Pham Bach Duong 1:5

TOP FRAME (SOCKS) Mr Pham Bach Duong 1:5

16.5 FLOOR (SOCKS) Mr Pham Bach Duong 1:5

TOP COVER (SOCKS) Mr Pham Bach Duong 1:5

BACK COVER (SOCKS) Mr Pham Bach Duong 1:5

ALUMINUM FRAME (SHOES) Mr Pham Bach Duong 1:10

Pham Tien Trong 17/07/2023 Shaped Aluminum

TRANSPARENT FRONT DOOR (SHOES) Mr Pham Bach Duong 1:4

FRONT FRAME (SHOES) Mr Pham Bach Duong 1:6

LEFT FRAME (SHOES) Mr Pham Bach Duong 1:6

RIGHT FRAME (SHOES) Mr Pham Bach Duong 1:6

REAR FRAME (SHOES) Mr Pham Bach Duong 1:6

FLOOR (SHOES) Mr Pham Bach Duong 1:6

TOP FRAME (SHOES) Mr Pham Bach Duong 1:6

TOP PLATE (SHOES) Mr Pham Bach Duong 1:6

BACK PLATE (SHOES) Mr Pham Bach Duong 1:6

BROOM BASE Mr Pham Bach Duong 1:4

8 15 + - 0.1 0.1 6 BLOOM Mr Pham Bach Duong 1:2

SECTION C-C SHOE MODEL Mr Pham Bach Duong 1:2

360 DEGREE ROTATING WATER VALVE Mr Pham Bach Duong 1:2

HINGE Mr Pham Bach Duong 2:1

5 R3 LATCH LOCK Mr Pham Bach Duong 2:1

Tiêu đề	Research, Design, And Implementation Of A Designated Washing Machine For Footwear
Tác giả	Tran Huynh Khang Duy, Do Anh Lin, Tran Nguyen Phuc, Pham Tien Trong
Người hướng dẫn	Mr. Pham Bach Duong
Trường học	Ho Chi Minh City University of Technology and Education
Chuyên ngành	Mechatronics Engineering
Thể loại	Graduation Project
Năm xuất bản	2023
Thành phố	Ho Chi Minh City

Định dạng
Số trang	120
Dung lượng	11,36 MB