It is a primary manufacturing process and has its effect on the properties of the resultant product.
Operation[ edit ] Injection molding machine molds can be fastened in either a horizontal or vertical position.
The majority of machines Magnetic moulding horizontally oriented, but vertical machines are used in some niche applications such as insert molding, allowing the machine to take advantage of gravity.
Some vertical machines also do not require the mold to Magnetic moulding fastened. There are many ways to fasten the tools to the platens, the most common being manual clamps both halves are bolted to the platens ; however, hydraulic clamps chocks are used to hold the tool in place and magnetic clamps are also used.
The magnetic and hydraulic clamps are used where fast tool changes are required.
The person designing the mold chooses whether the mold uses a cold runner system or a hot runner system to carry the plastic and fillers from the injection unit to the cavities. A cold runner is a simple channel carved into the mold.
The plastic that fills the cold runner cools as the part cools and is then ejected with the part as a sprue. A hot runner system is more complicated, often using cartridge heaters to keep the plastic in the runners hot as the part cools.
After the part is ejected, the plastic remaining in a hot runner is injected into the next part. Types of injection molding machines[ edit ] Machines are classified primarily by the type of driving systems they use: Hydraulic machines, although not nearly as precise, are the predominant type in most of the world, with the exception of Japan.
Tonnage is required on all machines so that the clamp side of the machine does not open i. If the tool half opens up it will create flash in the plastic product. Electric[ edit ] The electric press, also known as Electric Machine Technology EMTreduces operation costs by cutting energy consumption and also addresses some of the environmental concerns surrounding the hydraulic press.
Electric presses have been shown to be quieter, faster, and have a higher accuracy, however the machines are more expensive.
Pneumatic[ edit ] Pneumatic type machines use the air pressure for building up the tonnage on the clamp side of the machine.
Hybrid injection sometimes referred to as "Servo-Hydraulic" molding machines claim to take advantage of the best features of both hydraulic and electric systems, but in actuality use almost the same amount of electricity to operate as an electric injection molding machine depending on the manufacturer.
Main components of injection molding machine[ edit ] Consists of three main components:Magnetic Dry Erase WhiteboardLarge Selection · Market Leader · Property Management · Multiple Styles. Magnetic plate is designed for the traditional injection machine and give solution for long working time on change molds, complex operation, and low security.
The injection molding machine with magnetic plate is improved mold change time to 3 minutes but without changing the original structure, it is .
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