Injection Moulding Machine & Components of Injection Moulding Machine

Injection Moulding Machine

The injection molding machine converts granular or pelleted raw plastic into final molded parts via a melt, inject, pack and cool cycle.

Components of Injection Moulding Machine

A typical injection molding machine consists of the following major components,

1. Injection system
2. Hydraulic system
3. Mold system
4. Clamping system
5. Cooling System
6. Control system

Injection System

The injection system consists of a hopper, a reciprocating screw and barrel assembly and an injection nozzle. This system confines and transports the plastic as it progresses through the feeding, compressing, degassing, melting, injection and packing stages.

Hydraulic System

The hydraulic system on the injection molding machine provides the power to open and close the mold, build and hold the clamping tonnage, turn the reciprocating screw, drive the reciprocating screw and energize ejector pins and moving mold cores. A number of hydraulic components are required to provide this power, which includes pumps, valves, hydraulic motors, hydraulic fittings, hydraulic tubing, and hydraulic reservoirs.

Mould system

The mold system consists of tie bars, stationary and moving platens as well as molding plates (bases) that house the cavity, sprue and runner systems, ejector pins, and cooling channels. The mold is essentially a heat exchanger in which the molten thermoplastic solidifies to the desired shape and dimensional details defined by the cavity.

Clamping System

The clamping system opens and closes the mold, supports and carries the constituent parts of the mold and generates sufficient force to prevent the mold from opening. Clamping force can be generated by a mechanical (toggle) lock, hydraulic lock or a combination of the two basic types.

Cooling System

Cooling time is by far the most dominate time consumer in the injection molding cycle. A long cycle time means that the molder must charge more for the same part. During Product Design we should use thermal analysis capabilities to specify the cooling design for the tools. The result will be a low cost tool that will run fast and keep your cost per part as low as possible.

Control System

The control system provides consistency and repeatability in machine operation. It monitors and controls the processing parameters including the temperature, pressure, injection speed, screw speed, position and hydraulic position. The process control has a direct impact on the final part quality and the economics of the process.

Moulding Industry – Discover Everything You Should Know About Moulds and its Types

Moulding industry is getting bigger rapidly and the demand for moulding and trim will reach $9.8 Billion only in the US next year, chiefly due to the expansion in nonresidential construction. The fastest growth is expected in exterior moulding and trim, which will be followed very closely by metal stairwork. When it comes to material, plastic molding and trim products will offer the best prospects.

Moulding industry is a huge industry. So, let’s now talk about different types of moulds like plastic moulding, used injection moulds, injection moulding machines, extrusion moulding, rotational moulding, automotive moulding and OEM moulding.

Plastic Mould:

Blow moulding machine will be the main part of your business if you are involved in creating plastic products. Blow molding machine will turn plastic into a mold to make light & strong products.

Injection Moulding:

Injection moulding a way of manufacturing and, hence, helps make parts from thermoplastic and thermosetting plastic materials. Molten plastic is converted into a mould, which is the opposite of the product’s structure.

Injection Moulding Machines:

Injection moulding machines are also known as presses. These machines hold the moulds in which the components are created.

Extrusion Moulding:

Extrusion moulding is a process of creating hoses, drinking straws, pipes, curtain tracks, rods and fibers. Long tube-like shapes are formed through extrusion moulding.

Rotational Moulding:

Rotational moulding is a cost-effective method for producing hollow plastic products. Through this method very little waste is produced and costs are low as compared to blow moulding and injection moulding.

Automotive Moulding:

Automotive moulding is used on the body of the car for decoration and protection reasons. For example, door moulding, footrest moulding, etc. Both the detail and the material come under the term automotive moulding.

OEM Moulding:

OEM stands for Original Equipment Manufacturer. You can provide your own specifications when you want to get a particular product.

It is imperative to decide what sort of moulding you require. Understand all different types and then choose the one that best suits your needs.