Injection molding machine

Machine for manufacturing plastic products

Are you interested in learning more about cable injection moulding machine? Contact us today to secure an expert consultation!

An injection molding machine (also spelled as injection moulding machine in BrE), also known as an injection press, is a machine for manufacturing plastic products by the injection molding process. It consists of two main parts, an injection unit and a clamping unit.

Operation

Injection molding machine molds can be fastened in either a horizontal or vertical position. Most machines are 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 be fastened. There are many ways to fasten the tools to the platens, with manual clamps being the most common. However, hydraulic clamps and magnetic clamps are also used for fast tool changes.

The mold designer chooses whether to use a cold runner system or a hot runner system to transfer plastic and fillers from the injection unit to the cavities. A cold runner is a simple channel carved into the mold, while a hot runner system uses heaters to keep the plastic in the runners hot during the cooling process.

Types of injection molding machines

Machines are classified primarily by their driving systems: hydraulic, mechanical, electrical, or hybrid.

Hydraulic

Hydraulic machines have historically been prevalent among molders, although Nissei Plastic Industrial introduced the first all-electric injection molding machine. While hydraulic machines are still dominant in many regions, they do not offer the same precision as electric machines.

Mechanical

Mechanical machines utilize the toggle system to build up tonnage on the clamps to prevent them from opening due to injection pressure, ensuring a flawless molding process.

Electric

Electric presses significantly cut operation costs by minimizing energy consumption and other environmental impacts compared to hydraulic presses. They tend to be quieter, faster, and more accurate, though they come with a higher price point.

A robotic arm is often employed to remove molded components, with parts typically dropping out of the mold and into a container.

Main components of injection molding machine

Injection unit

The company is the world’s best Vertical Plastic Injection Molding Machine supplier. We are your one-stop shop for all needs.

1. Screw motor drive
2. Reciprocating screw and barrel
3. Heaters, Thermocouple, Ring plunger

Clamping unit

1. Mold
2. Clamping motor drive
3. Tie bars
4. Hydraulic QMC

Further reading

For information about different types of injection molding machines, you can explore their various structures and advantages. If you'd like to learn more, please visit our website Vertical Injection Moulding Machine Manufacturers.

Whether you require assistance with maintenance or wish to purchase an injection molding machine, feel free to contact us today!