Qualifications, Startups and Tryouts of Injection Molds
The truth is you don’t need fancy gizmos to do scientific molding. All you need is a machine where you can read the settings, an accurate weigh scale, and a computer. A universal setup guide only needs a little homework on your part to read each machine’s manual and the ability to read the settings. If you had a few days and an engineering textbook you could actually write these spreadsheets yourself! It is NOT MAGIC. This CD uses a practical, down to earth, easy to use approach to bringing a mold on-line and producing consistently good parts. CD contains both filled in tutorials showing what inputs are required and worksheets for you to fill in.
Contents of the 90 page book.
Spreadsheets in Microsoft Excel .xls files: Optimum fill calculation – the melt viscosity curve, Gate Freeze off, Cooling time, Cavity balance for multi cavity tools, Cp CpK calculator, Universal setup sheet – includes how to translate from one machine to another, a waterline map, Runner size optimization, and a calculator to determine your process window settings.
Microsoft Word .doc Files: Mold Check List, Mold History/Maintenance forms. The text includes a complete explanation of the experiments to optimize your injection molding cycle.
Other Topics are:
Mold Maintenance – Inspection and General Maintenance, Mold hang and Mold Pull procedures, Mold Storage, Basic Chemistry, Quality Control/ Quality Assurance – Cp and CpK explained and how to use them, Sizing Sprues, Nozzles and Runners for your mold, Hard Copy of the Mold Check List, Mold History and a Data Form to fill out for the experiments, and how to calculate a process window that will allow you to adjust the process as it drifts and still make acceptable parts.