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Uploaded byNatasha Ereena Mohd Nasir
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Manufacturing Process of Washing Machine

The document describes the manufacturing process of a washing machine. It involves fabrication of parts from sheet metal and plastics using processes like die casting and injection molding. The parts are then assembled into sub-assemblies like the transmission, pump and tub. Finally, the sub-assemblies are assembled together along with other components through manual and automated processes to form the final washing machine, which is then tested and packaged.

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MANUFACTURING PROCESS OF WASHING MACHINE CONCEPT SQUAD MEMBERS: 1) LAW ZU QIAN 2) MOHD SHAFIQ ROSLAN 3) NATASHA EREENA MOHD NASIR 4) MOHD HANIF HANAFI MOHD YONG FACULTY OF ENGINEERING & BUILT ENVIRONMENT DEPARTMENT OF MECHANICAL & MANUFACTURING ENGINEERING LECTURERS: 1) PROF. DR. ANDANASTUTI MUCHTAR 2) DR. NASHRAH HANI JAMADON 3) DR. NABILAH AFIQAH MOHD RADZUAN
TASK DESCRIPTION VIDEO EDITORS BY MOHD SHAFIQ ROSLAN & MOHD HANIF HANAFI MOHD YONG SLIDES: INTRODUCTION BY MOHD SHAFIQ ROSLAN APPLICATION, MATERIALS & PROPERTIES & FUTURE DEVELOPMENTS BY LAW ZU QIAN MANUFACTURING PROCESS & LOCAL COMPANY BY NATASHA EREENA MOHD NASIR CONCLUSION BY MOHD HANIF HANAFI MOHD YONG
INTRODUCTION Washing machine is one of the basic home appliances that is to help our job become easier and to improve our lifestyle. Commonly this machine helps people to do their laundry by using water and some laundry detergent either in the form of solid (powder) or liquid. There are various washing machine types such as :- • Top loading • Front loading • Semi-automatic • Fully automatic Important parts of washing machine:- • Water inlet control valve • Water pump • Tub • Rotating disk • Motor • Printed circuit board (PCB)
TYPES OF WASHING MACHINE Front-loading washing machine Top-loading washing machine
Anonymous. “Parts of a Washing Machine & How it Works.” https://www.brighthubengineeri ng.com/consumer-appliances- electronics/38895-working- parts-of-a-washing-machine/. Accessed on 10 July 2020 PARTS OF WASHING MACHINE
APPLICATIONS OF WASHING MACHINE • Washes your clothes on a daily basis • Shoes can cleaned using washing machine but you have to remove the laces and stash them in a mesh laundry bag • Even backpacks can be cleaned • Saves your time and energy compared to manual washing • More efficient as it can removes stains with lesser water and soap compared to manual washing • Commercial washing machine can clean in big quantities
MATERIALS USED AND THEIR PROPERTIES • Most parts are made of sheet steel, generally coated with zinc to prevent rusting • The process involved is known as hot-dip galvanizing • The zinc coating can prevent the steel from contacting with corrosive substances • The spin tub for some models uses stainless steel • Stainless steel have higher strength, hardness and ductility compared to mild steel
MATERIALS USED AND THEIR PROPERTIES (cont.) • The wash tub is typically manufactured from enameling iron with a porcelain coating • The coating is able to increase the chemical and water resistance of iron • The tub guards, pump and the agitator are made of plastic • Plastics are typically durable and have high resistance to water and chemicals • Cast aluminium is used to manufacture the transmission inside a washing machine • Again, cast aluminium is used as it has high corrosion resistance
MANUFACTURING PROCESS OF WASHING MACHINE
Sub-assemblies AssemblyFabrication The Manufacturing Process ConceptSquad
Fabrication • Machine presses a chunk of sheet metal between two halves of a mold called die ⚬ The metal will take space between the halves of the die ⚬ Possible: Metal is fed directly from a coil into a press ⚬ Not possible: Metal is cut to length and manually placed into the die • Plastic parts are formed in an injection molding machine, a metal mold with one or more cavities in the shape of the specified part ⚬ After being heated to temperature, the plastic is forced into the mold under high pressure ⚬ Water is passed through the mold to cool down and solidify the part ⚬ The mold is opened and the part pushed out by ejector pins
• Aluminium transmission parts are formed into a rough shape in a die cast machine ⚬ The molten metal is mechanically scooped out into the mold and cooled ⚬ The developed rough casting is given its final product by various machines • Based on the image, the key components (transmission, motor and broke assembly) are put below the agitator ⚬ The balance ring is a weighted ring that prevent the washer from moving around during operation Fabrication Source: http://www.made how.com/Volume- 1/Washing- Machine.html
The transmission is assembled manually by workers who bolt, snap or press several shafts and gears together SUB-ASSEMBLIES Workers then add a metered amount of oil and bolt the unit together The pump is assembled automatically. Robots place the impeller and seals within the cover and body, and seal the pump Some manufacturers use heat and vibration as a sealant The tub parts are made in presses and also the sub- assembly is manufactured automatically. After being rolled into a drum shape, the side is welded. The weld is smoothed out and also the drum is placed on expander which stretches the tub into final shape. A bottom is welded onto the drum and is smoothed. The tub is dipped in a solution called ground coat and heated to about 1600 degrees until the coating hardens
The balance ring could be a large weight that stabilizes the washer. Its outside structure is plastic with a ring of metal melted into the plastic for strength SUB-ASSEMBLIES Cement is added and balanced precisely. The ring which weighed over 20 pounds keeps the machine from moving when it is in use Any one of several painting processes was used (i.e. steel, chemicals, powder) Although prepainted steel is cheaper, it does not offer the best rust protection because the cut edges are not painted. Some treat their parts with various chemicals to wash before applying paint. Next, the paint also comes in powder which then sprayed on the part. After spraying, the conveyor moves the part into an oven that melts the paint; when the part cools, the paint process is completed
Assembly • Mount the transmission on the balance ring. The transmission is ready on a bearing that is bolted on the wash tub; the wash tub is sitting on a conveyor. The lower bearing, the brake assembly, and therefore the drive pulley are put on the end of the transmission. Next, to carry all the pieces together, the pivot dome and legs are bolted on the assembly • Workers lift the module onto the washer base. Springs are added to carry module and base together. A seal is added, the spin tub is bolted to the transmission inside the wash tub, and its plastic covers are snapped into place. A plastic hub, which attaches the agitator to the transmission, is bolted onto the output end of the shaft. Then the agitator is snapped onto the hub
Assembly • The pump and a mounting bracket are now bolted onto the motor, which is fitted with a shield to guard against potential leaks. This assembly is bolted to the bottom of the washer and connected to the transmission module with a belt and hoses • Next, the lid hinges are attached to the lid and also the top. The top is bolted to the cabinet with a hinge for easy maintenance. A mixing valve to manage the mixture of hot and cold is bolted to the rear of the cabinet. The graphics panel is mounted on the control panel. The harness is clipped to the control connectors at one end, and therefore the other end is passed through a hole within the top to be mounted to the motor. As to its large size and weight, the cabinet assembly is placed within the washer by a robot
Assembly • The cabinet is bolted to the bottom and also the controls are snapped along with the mating connectors on the module and motor. The drain hose is pulled through the cabinet and the gooseneck is added. This part is what gives the hose its hook shape in order that it’ll fasten into the drain. After being tested, the front panel is bolted on and a packet of data and accessories is added • The finished unit is crated automatically. A machine opens the cardboard box and drops it over the washer. The top and bottom flaps are simultaneously folded over and glued. The machine applies pressure to make sure the glue sets properly. Next, the machine puts a banding strap round the top of the crate for lift truck transportation
1 9 6 5 : FOUNDED AS KEAT RADIO & ELECTRICAL CO. by Dato’ Seri Chew Weng Khakin in Balik Pulau, Penang 1 9 7 4 : THE FIRST BRANCH WAS ESTABLISHED ventured into the import, export and distribution of electrical home appliances 1 9 8 2 : PENSONIC SALES AND SERVICE SDN. BHD. WAS FORMED to house the fast expanding business under one umbrella group THE NATION’S FIRST “MADE IN MALAYSIA” ELECTRICAL HOME APPLIANCES! Sound of Penang
FUTURE DEVELOPMENTS • Reseachers from Universiti Tekonologi PETRONAS proposed a portable yet eco-friendly washing machine. • Users are able to use their legs to power the washing machine just like cycling while keeping fit • LG proposed a twin-wash unit whereby a mini washer is attached to the normal washer • This technology is especially useful when you need to wash an outfit in a rush while saving energy • Small portable washer is going to be the trend for travellers
CONCLUSION As a conclusion, different types of washing machine that leads to one main application which is to clean our clothes. Washing machine is developed to reduce the energy spent on the manual ways. The earliest version of washing machine was hand-operated and produced using wood and nowadays washing machine was made of sheet metal and operated by electricity. Thus, life without a well-functioning washer can quickly turn into a chore so we must appreciate the technology of washing machine.
REFERENCES Aalco. 2019. Stainless steel. http://www.aalco.co.uk/datasheets/Stainless-Steel-St-St-Introduction_61.ashx [10 July 2020]. Advameg. Washing machine. http://www.madehow.com/Volume-1/Washing-Machine.html [10 July 2020]. Anonymous. 2009. “Parts of a Washing Machine & How it Works. https://www.brighthubengineering.com/consumer-appliances-electronics/38358-types-of-washing- machines/ [12 July 2020]. Anthony T. 2018. Porcelain enameling effluent guidelines. https://www.epa.gov/eg/porcelain-enameling-effluent-guidelines [10 July 2020]. Dynacast. 2020. Aluminium die casting metals. https://www.dynacast.com/en/knowledge-center/material-information/die-cast-metals/aluminum-die- casting-metals [10 July 2020].
REFERENCES(cont.) Hamzah Sakidin, Pretesh Sudhakaran, Muhammad Syaamil Saad, Sarah Syamimi Rozali, Abdul Hadi Nasarudin & Ahmed Abdullah AlMashhor. 2017. Development of eco-friendly washing machine. MATEC Web Conf. Volume 131, 2017, hlm. 1-7. DOI: 10.1051/matecconf/201713104015 Nicole, H. 2019. The future of washing machines - latest features and technology. https://www.reviewthis.com/future-features-washing-machines/ [13 July 2020]. Pensonic. 2020. Our history. https://www.pensonic.com/about-us/our-history [10 July 2020].
Manufacturing Process of Washing Machine