Robotics in Injection Molding

Injection molding is a fabrication procedure for the production of parts by injecting liquid matter into a mold. This procedure can be performed with a range of contents among them metal; the process for this is known as die casting, elastomers, glasses and ordinarily thermoplastic and thermosetting polymers.

Today’s plastic industry has seen industrial robots used across all areas of plastic fabrication and that includes injection molding related procedures. These procedures include; filling constituents into the injection molding device to completing and assembling injection molded bits. Utilization of robotics provides plastic fabricators with a competitive advantage which enables an increase in productivity and quality of the produce as well.

Apart from this, robots are also regularly used in post processing on the exterior of the molding procedure. These post processing procedures include welding, assembly and bundling detail spurred by a growing call for more flexible solutions.

Applications of robotics processes in injection molding

Injection molding robots are responsible for various application procedures in injection molding these include:

Plastic injection molding

Plastic injection molding is a production procedure for producing plastic items in massive capabilities. Plastic injection molding is typically a go to for mass production where identical items are forged repeatedly and the robots are capable of these repetitive tasks.

The most common application of plastic molding is machine tending. Machine tending is the procedure of loading or unloading a given machine with parts or material. Machine tending is a labor-intensive procedure that needs high consistency in operating due to the thermo sensitive item being molded.

Robot usage relieves manual operators from the repetitive tasks, fatigue and averts the risk of injuries. This in turn results in improved fabrication consistency and fabrication capacity.

Insert molding

Robots are also counted upon for insert molding.  Insert molding necessitates compressing an insert into molded plastic. More often than not the insert ought to be a metal object in the form of a threaded rod, blade, pin and other forms as well.

Inserts can be put inside the plastic molded fragments either during the injection molding procedure or after. Insert molding can be used in cooking ware, automobiles, household equipment, electrical components, knobs and more. Not only does insert molding reduce the fabrication and labor expenses but also reduces the weight and size of the fragment.

Over molding

In over molding, fabrication of the constituent parts is a standard injection molding procedure that involves an aluminum mold with no cooling or heating channels running through it. The procedure can be automated to varying extents for quick and precise placement of fragments.

A robot can lift a molded fragment from of one injection molding device and place it into another for the over molding procedure. This decreases fabrication and labor expenses, and enhances the grade, reliability and wholesomeness of the end product.

In mold labelling

In mold labelling is procedure for marking or enriching plastic injection molded fragments during the injection molding cycle. This is another usual area for robotic involvement. In mold enriching uses robots to load pre-printed labels or enriched film straight into the gaping plastic injection mold.

Labels are invariably infused into the injection molded parts and they grow into a key fragment of the end product. Combining the enriching procedure with the molding process cuts the total expenses, but can surge the production period.


Recycling plays a key role in the plastic injection molding procedure. Thermoplastic substances can be reused. With equipment fabricators continuing to surge recycled content in their products for feasibility and the molders showing interest in cutting resin expenses, recycled plastics are still somewhat misconstrued, and hence underutilized.

Many people fear they are damaged products, too conflicting to work with and not suitable. However, it has been found out that if recycling is done in the right manner the odds between virgin and recycled plastic fragments is negligible.


All in all it is evident robotics play a key role in injection molding as illustrated above. Their effectiveness and efficiency is unmatched and a daunting prospect for both big businesses and small businesses as well.

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