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Lesson 9: Lawn Tractor Pedal

Polymer material characteristics, part design, mold design, and process all play a critical role in molding quality parts.  This lesson focuses on the development and execution of a process development strategy for a single cavity lawn tractor pedal mold.

In this lesson you will learn: the step-by-step approach to achieving cycle time goals; why higher pressure at the end of packing and holding can cause molded-in stress; how a process team may determine that they can inject more slowly during process development and maintain a reasonable temperature range inside the mold; and why molten areas may warp when a part is ejected and how final warpage is dependent on whether the molten areas shrink evenly.

 

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Lawn Tractor Pedal

Learn the necessary steps to successfully execute a process development strategy. Continue to build your own Circle of Knowledge lesson by lesson. 

Goals of Molding Process Development (Level 2): 

  • Learn the basic steps to prepare and set-up a molding cell
  • Understand and implement pre-process development steps
  • Prepare a mold for optimal functionality

Section Description: 

Plastic injection molding is a complex scientific manufacturing process that requires a methodology for setting-up a robust molding process. This section outlines a step-by-step guide that can be adapted to any new molding process development project.

Length: Lessons are approximately 15-20 minutes long each

The Kruse Training platform delivers knowledge and expertise developed over two decades in the plastic injection molding industry. Now companies and individuals can access a state-of-the-art online training program, suited for all levels of knowledge.