The Ultimate Deal on Injection Molding Machine 2022

Introduction to plastic injection molding technology

The injection molding machine 2022 is a technology for manufacturing products by injecting molten material into a mold. It can perform on various materials, primarily metals (commonly known as pressure casting), glass, elastomers, blends, and thermoplastics.

This technology is widely shared in manufacturing, from small parts to the entire chassis plate.

Casting details must meticulously design to facilitate the casting process; The casting material, shape, required part characteristics, mold material, and die-forming machine properties must be carefully calculated. This gives the flexibility of injection molding technology.

Introduction to injection molding machine 2022

The injection molding machine was first invented in the United States in 1872 by brothers John Wesley Hyatt and Isaiah. This machine is more primitive than modern equipment; it works like a giant needle; under the action of a piston, the plastic is through the cylinder head and injected into the mold.

German scientists Arthur Eichengrün and Theodore Becker discovered the first soluble forms of cellulose acetate in 1903, which are less flammable than cellulose nitrate and easy to extrude. Arthur Eichengrün developed the first injection molding machine in 1939 and patented the flexible cellulose acetate injection mold.

First screw pump manufactured quality of the products

World War II opened up massive demand for cheap and mass-produced products. In 1946, American inventor James Watson Hendry built the first injection molding machine in 2022, which allowed more precise control of the injection rate and quality of the products manufactured.

This machine can also mix raw materials before spraying so that colored plastic or recycled plastics mix. In 1970, Hendry developed the first air-assisted injection molding system to cool complex products rapidly.

Flexibility and rigidity of manufactured products

This improves the design flexibility and rigidity of manufactured products while saving on costs, fuel, raw materials, and waste. In 1990, aluminum molds were widely common. Nowadays, screw pumps make up the majority of plastic injection molding machines.

Injection molding machine 2022 technology produces push buttons for automotive, medical, consumer goods, toys, plumbing, packaging, and construction.

Applications of injection molding technology

Firstly, injection molding technology is widely shared in the industry, especially in the plastics industry, as the ideal method for producing large objects of the same volume. In addition, injection molding technology is also applied in the manufacturing industry of packaging, bottle caps, auto parts, components, coils, musical instruments, tables, chairs, and machine parts (including gears), …

Technological features of Injection molding

Secondly, injection molding uses ram pistons or screw pistons to inject molten material into the mold, hardening to achieve the shape of the mold cavity. This injection molding machine 2022 is commonly typical to process thermoplastics and thermosetting plastics in much larger volumes than in the past.

Thermoplastics are popular

Thermoplastics are popular because they are suitable for injection moldings, such as ease of recycling and wide application in many fields and their ease of softening and melting when exposed to heat. They are also safer than thermosets when they do not extrude in time. It can cause vulcanization and stuck control valves, leading to equipment damage.

The injection molding machine 2022 of raw materials with high pressure into the mold will form a plastic block of the desired shape. The mold can be a single-cavity or multi-cavity. The holes can be the same or different for multi-cavity molds to produce many parts in one injection cycle.

Stainless steel and aluminum molds

Mold materials are usually tool steel; stainless steel and aluminum molds are suitable for specific applications. In particular, parts with large masses or small tolerances typically do not use aluminum molds.

Thirdly, and most importantly, they have poor mechanical properties and are susceptible to corrosion, damage, and deformation during injection, precisely because Therefore, aluminum molds are very effective in manufacturing small, light parts with significantly reduced mold design and manufacturing costs and production time. Many steel molds are designed to produce millions of pieces,

Perfect temperature and humidity in injection molding machine 2022

Manufacturers spend a lot of money maintaining custom molds for a long time. Ideal temperature and moisture guarantee the lifetime of each mold. Custom molds, such as rubber injection molds stored in a controlled temperature and humidity environment to prevent warping.

Tool steels are commonly standard.

Mild steel, aluminum, nickel, or epoxy are only suitable for prototype runs or short production processes. Modern rugged aluminum (usually alloys 7075 and 2024) with suitable mold designs easily molds the ability to cast more than 100,000 parts with proper curing.

Manufacturing of the products

The two main mold-making methods are:

Standard machining method and EDM. The traditional machining method is common to the conventional mold-making way. With the development of technology, injection molding machine 2022 has become the primary means to create complex molds with higher precision and save time than traditional methods.

The electro-spinning machining method (EDM). The electro-spinning machining method (EDM) is gradually becoming widely shared, as well as for machining complex shapes or forming hard molds without heat treatment.

Moreover, EDM is a simple process in which an electrode is introduced very slowly into the mold surface. The electrode reversal of the voltage between the tool and the die causes erosion and forms the required consistency.

Casting cavities directly correlate with the casting cost

In the injection molding machine 2022, the number of casting cavities directly correlates with the casting cost. Fewer chambers and fewer tools lead to lower initial production costs.

Since the number of cavities plays an important role, so is the complexity of the molded product design. This complexity includes many factors such as surface finish, tolerances, external or internal threads, fine detailing, or several cuts. In particular, scratches or additional tool properties will increase die costs, and core and cavity surfaces will also affect production costs.

Rubber injection molding produces a highly durable product, making it the most efficient and economical molding method. The proper curing process provides precise temperature control and significantly reduces material waste.

Spray process in the injection molding machine 

In the injection molding machine 2022, the plastic is fed into a hot tank through a hopper. The resin drives forward by the screw piston, enters the burning chamber, and begins to flow. The liquid resin pushes through the nozzle into the mold cavity through channels and inlets. The mold is still cold, so the resin hardens as soon as it is filled.