Injection molding is a field that is continually changing. with the creation of new materials, innovative and complex tooling, sophisticated molding machines, and novel processes and process control systems. Having said that, one thing is constant, and that is time.
The technical section should be focused on process optimization. They ought to live by it.
As a processor, I adhered strictly to the 11 stages advised by BSA Injection Moulders, which enabled me to continuously improve our procedure.
Adapt the heat
A melt temperature that is in the middle of the process temperature range advised by your material supplier should be reflected by barrel temperatures.
Spray Nozzle
Your nozzle tip has to be the right size, with the right orifice and radius. Verify that yours is accurate if you are unsure.
Recurrent Upkeep
Your tooling maintenance team needs to PM the tooling. Make sure it is properly oiled, cleaned, and vented.
Reduce the clamp opening distance
This enables robotic component removal or part drop. Breakaway position and speed. Open down the position and speed. Slow down position and clamp close velocity. Ejector pins or leader pins, horn pins, and guide length should all be taken into consideration. It is best to tune the velocities for a smooth yet rapid open and closing.
Fill Period
Once you have a good understanding of the rheology of the material you are processing, fill the hole as quickly as you can using the rheology curve.
Decide on the Fill-Only Weight
Weight that is fill-only must be determined. Essentially, this is your initial stage fill. Instead of fill weight, I would rather say fill volume. Depending on the component’s design, the part should be around 95% filled by volume after the first stage, give or take 3 to 4%. A Decoupled 2 or procedure is necessary for this.
Stage two or the stage of your pack
Depending on the established method, something might be packed or held. To fully pack a component, pack pressure should be adjusted to fill the part. Parts that are improperly or excessively packed may have dimensional problems and poor aesthetics (i.e.flash or sinks).
Hold Period
Depending on the part’s weight, look, and size, hold time should be calculated. Not all pieces absolutely need to have a gate seal.
Cure Period
Cure time is determined by HDT (heat deflection temperature). Your water temperature and cooling time will determine this.
Section Ejection
The component and runner arrangement, as well as the preferred method of part removal, all affect part ejection. If you are descending down a chute or onto a conveyor belt, ejecting instantly can be feasible. If there are deep pockets or ribs, a two-stage ejection may be required depending on the component arrangement.
Change the settings for robotic part removal (if applicable)
Reduce part removal time by speeds, positions, and wait periods if robotic part removal is necessary.
This will boost your productivity and lower the capacity of your machines, enabling you to expand your company without buying new molding equipment.
Resources
- 5 Tips for Injection Molding Design You Must Read
- Creating a Prototype for Injection Molding
- Design Principles for Injection Molding Suggestions
- How Effective Is Injection Moulding?
- How To Create a Good Injection Mold for Parts with Thick Walls?
- How to Understand Plastic Injection Molding?
- Injection Moulding: Best Practices and Benefits
