Guide to Injection Machine

June 07, 2024

Injection machines are pivotal in the manufacturing industry, enabling the mass production of intricate and high-quality parts with efficiency and precision. As technology advances, the capabilities of these machines continue to expand, catering to diverse industries and applications. This guide explores the various aspects of injection machines. Brought to you by Hommar, a leading Injection Machine manufacturer, this comprehensive guide will enhance your understanding of these essential tools.

What is an Injection Machine?

An injection machine is a device used to manufacture parts by injecting molten material into a mold. The process involves heating the material until it becomes liquid, then forcing it into a mold cavity where it cools and solidifies into the desired shape. Injection machines are used with various materials, including plastics, metals, and silicone rubber, making them versatile for different manufacturing needs.

PartⅠ-Types of Injection Machines

Injection machines come in various types, each suited for specific applications. Some common types include:

Standard Injection Machines

These machines are used for general-purpose injection molding and can handle a variety of materials and part sizes. They are the workhorses of the injection molding industry, providing versatility and reliability.

LED Housing Injection Machines

LED housing injection machines are specialized for producing housings and components for LED lights. These machines are designed to handle materials that require high precision and consistency, ensuring that the final products meet the stringent quality standards of the electronics industry.

Numerical Parameters:

Injection Pressure: Up to 2500 bar

Cycle Time: 20 to 60 seconds

Material Used: Polycarbonate, ABS

Silicone Rubber Injection Machines

Silicone rubber injection machines are used to produce parts from silicone rubber, a material known for its flexibility, heat resistance, and durability. These machines are ideal for applications requiring intricate designs and high-quality finishes, such as medical devices, automotive components, and consumer goods.

Numerical Parameters:

Injection Pressure: Up to 3000 bar

Injection Volume: 10 to 2000 cm³

Material Used: Liquid Silicone Rubber (LSR), High Consistency Rubber (HCR)

PartⅡ-Applications of Injection Machines

Injection machines are utilized across a wide range of industries, thanks to their versatility and efficiency. Here are some notable applications:

● Automotive Industry

In the automotive industry, injection machines are used to produce various components, including dashboards, bumpers, and interior parts. The precision and repeatability of injection molding ensure that automotive parts meet stringent quality standards.

Numerical Parameters:

Component Size: Small clips to large panels (up to 1.5 meters)

Material Used: ABS, polypropylene, nylon

Cycle Time: 20 to 120 seconds

● Electronics

Injection machines play a critical role in manufacturing electronic components, such as housings for LEDs, connectors, and casings for devices. These machines enable the production of complex and precise parts, ensuring the functionality and aesthetic appeal of electronic products.

Numerical Parameters:

Component Tolerance: ±0.05 mm

Production Volume: Up to millions of units per year

● Medical Devices

The medical industry relies on injection machines to produce various devices, including syringes, inhalers, and surgical instruments. The ability to produce high-precision parts with biocompatible materials makes injection molding ideal for medical applications.

Numerical Parameters:

Material Used: Medical-grade plastics (e.g., polycarbonate, PEEK)

Sterilization Compatibility: Autoclave, ETO, gamma radiation

● Consumer Goods

Injection molding is widely used in the production of consumer goods, such as toys, kitchenware, and household items. The versatility of injection machines allows manufacturers to produce a wide range of products with varying sizes and complexities.

Numerical Parameters:

Production Speed: Up to 30,000 parts per hour

Material Used: Polyethylene, polypropylene

Advantages of Using Injection Machines

High Efficiency

Injection machines are capable of producing large quantities of parts in a relatively short time. The cycle time for each part can range from a few seconds to a couple of minutes, depending on the complexity and size of the part.

Precision and Consistency

Injection machines offer high precision and repeatability, ensuring that each part produced meets exact specifications. This consistency is crucial for industries that require uniformity in their products.

Material Versatility

Injection machines can process a wide range of thermoplastic and thermosetting polymers. This versatility allows manufacturers to choose the best material for their specific application, whether it be strength, flexibility, or chemical resistance.

Reduced Waste

The injection molding process generates minimal waste, as any excess material can often be recycled and reused. This not only reduces material costs but also contributes to environmental sustainability.


Investing in an injection machine can significantly enhance your production capabilities, ensuring high-quality parts with minimal waste. As technology continues to advance, injection machines will remain at the forefront of manufacturing innovation, driving progress across numerous sectors.Hommar, as a leading Injection Machine manufacturer, provides high-quality machines designed to meet the diverse needs of its clients.

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