the basic practices of improving injection molding productivity
1) Allow specific injection molding machines to work on specific plastic parts. For this, you can concentrate manpower and have specifically trained people for specific parts. EG. components for Apple products must be halogen-free so machines cannot be used for other products that have halogen in them and transparent plastic parts to be used on machines for transparent parts. So should also set aside machines for injection mold trials and machines for production.
2) Loading and unloading of injection molds can be time at 1 hour. This defers between big injection molds and small injection molds. How quickly this can be done really depends on the facilities and the setup team. If you are running long term productions, setting up time may not be a big issue.
3) Scrap reduction should be monitored before an injection mold is commissioned for mass production, improving injection molding productivity In fact, after the injection mold trials were completed the injection mold should go through a small batch production run of about 5k parts to fully monitor how the tooling is keeping up with the production and the amount of scrap it gathers. Basically, the amount of scrap during a mold trial should be kept below 20%. This includes purging the barrel and attempts to full the injection mold. For bigger molds, this may run differently.
4) Mold maintenance technically should be done at different stages, simple maintenance, and comprehensive maintenance. Simple maintenance to be done within 1 or 2 months’ time. This is to remove debris and clean up the injection mold. This should take a day or maybe have a day to do. Comprehensive maintenance should be done at least once a year. This is to check the injection mold for damages and perform necessary changes. The time allocated depends on how severe the injection mold wears. The timing can change based on the confidence you have with your injection molds.