There are always have skills or rules to do something which can make it more efficient. Below are some rules to select a right plastic injection moulding machine for your study and reference:
1. Choose the Right Model Series
There are many dedicated injection molding machines available in the market. Most injection molding machines manufacturer developed different series molder for a dedicated industry. The first step is to pick up the right series machines according to your exactly product and it`s raw materials.
For example, you should choose the PET Series or HPET Series injection molding machine if you want to produce PET preforms for PET bottle.
2. Can Load the Mould
The second step is make sure the mould must can be loaded in the plastic injection moulding machine. Check the mould`s size, select a machine which guide post distance is bigger than the mould size. And double check the max. and min mould thickness, platen size to double confirm that machine can load your mould. This base on your already have a available mould.
3. Products Can Be Take Out
Check the ejector stroke of your mould and product size, make sure the injection molding machine`s opening stroke and ejectior stroke is bigger than your mould`s ones.
4. Enough Clamping Force
Make sure the clamping force is bigger the your requirement. It`s a little complex how to calculate the clamping force. I will write another article to talk about it.
5. Full Injection
Calculate out the shot weight requirement according to your product`s weight and mould`s cavities. The formula is shot weight=product weight x cavities. Make sure the injection machine`s shot weight is a bit bigger than you requirement.
6. Well Shot
Adjust and select the right screw with L/D ratio and injection pressure. This is mostly depends on what kind of raw material your product is. Check here for injection pressure of different materials.
7. Fast Injection Speed
To produce a quality produce needs a right injection speed. This depends on the exactly product and it`s material and mould design. Check it out with the mould manufacturer first and make sure the plastic injection moulding machines can meet it`s requirement.
Above rules are a brief way for selecting a right injection molding machines. Of cause there are other rules for different products. That will be depends on your exactly product. So please ask for some advise from the injection manufacturer`s engineer if you are not sure which machine is right for you.