Issues observed in the past:
- Problems were not found during the course of multiple tryouts. Normally tooling tend to raise in temperature reaching a stable steel temperature and smooth movement after injecting plastic and ejection for more than 100 shots. Due to the budget involved, tooling at tool shop was not ran long enough consistently. This will result in overlooked issues not being found in tool shop.
- In previous years, we have tool which shows wearing or stuck up ejectors or lifters during mass productions. In return to avoid tooling issues not showing well enough, we begin to do empty shot cycles validation process.
Tooling will be heated up with 10 degrees higher temperature than usual parameters and injection machines will run the tool with empty shots simulating open,close and ejection motions for at least 3~4 hours. Many issues has been found and resolved since the empty shots step start to run in the begining, this kind ex-work help us to find the balance of tooling tryouts and mass production, and bringing toolings with good quality to all customers.
 |
 |
 |
 |
EN
