Essay On Injection Moulding

Process number 1 :- Injection Moulding.

Injection moulding is a cheap, efficient and environmentally friendly way of precisely replicating a mould or plastic components.

Here’s the 4 stages of injection moulding...

Stage 1

Thermoplastics in a granulated or powdered form are fed into a hopper which leads into the machine.

This hopper is blowed with warm air which eliminates any moisture in the mould, if moisture were to get into the mould, the product produced by the mould would most likely have faults.

Stage 2

The injection moulding machine is made of a steel barrel, this barrel containing a large rotating screw, technically known as an archimidial screw, carries the plastic pellets or powder along the barrel to the mould.

While being pushed to the end of the

Hand soldering is usually done for small or one off jobs, but for cheaper products with smaller circuits, (like the screwdriver we’ve been investigating) the PCBs used for controlling the screwdriver are hand soldered by labourers in mostly third world countries.

Children and the poor are usually employed in sweatshops and are usually paid minimal amounts of money (usually a couple of dollars per day) meaning manufacturing prices are incredibly low, this helps with making the screwdriver be sold for less, but this way of production is considered incredibly inhumane.

Soldering Using Robots

A faster and more efficient way of soldering things is by using robots.

These robots are much faster and all around better than humans, since they do what humans fall short in.

First of all, a robot is astronomically more precise and consistent than a Human, and errors during manufacture resulting in defective products are nearly eliminated, since human error isn’t at play during manufacturing.

Production of a PCB

The PCB starts off as just a piece of fibre with a very thin layer of copper on the top of