Many thanks to Professor William Hammack from University of Illinois, Urbana Champaign for sharing this marvelous video about plastic injection molding!
In Group 8's draft proposal, plastic injection molding via machinery was determined as a method to provide the clamp mechanism and cap. This technique can machine a metal mold (in our project, steel will be this metal) in a very small dimension. Additionally, Bryce introduces in his article that the operation of injection molding machine can incorporate many functions and features into the finished mold design, which reduce the processing time for mold making.
However, the air vents, where air can escape out of the mold after being forced by the molten plastic, are "very shallow", Professor Hammack explains at 4:15. He states that the vents' deep is between five and forty microns. As a result, Professor Hammack declares in his video at 4:54 that hundreds of dollars, which is the price of injection molding machine, are required to produce steel molds with that precised scale.
Therefore, Paul discussed that injection molding were impossible to apply due to the project's tight budget. Group 8 will have to determine the alternate method to create Re-Stringer's clamp and cap!
Reference
Bryce, Douglas M.. (1998). Plastic Injection Molding, Volume III - Mold Design and Construction Fundamentals - 1. A Primer on Molds. Society of Manufacturing Engineers (SME). Online version available at:
http://app.knovel.com/hotlink/pdf/id:kt00A1MO65/plastic-injection-molding/a-primer-on-molds
Hammack, W., (2015, November 24). Plastic Injection Molding. Retrieved from https://youtu.be/RMjtmsr3CqA?t=4m15s
No comments:
Post a Comment