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  1. #1
    Join Date
    Jul 2017
    Posts
    22

    Angry Plastic Injection

    How Plastic Injection Moulding Design Work?

  2. #2
    Join Date
    Sep 2006
    Posts
    6463

    Re: Plastic Injection

    Hi.....you granulate some plastic of your choice and push it down a pipe with a spiral worm feeder like a meat mincer.

    At the bottom end of the pipe the plastic is melted by an element that surrounds the pipe and the incoming unmelted plastic acts like a piston to force the melted plastic into the mold.......more I cannot tell you as I've only worked on those machines and never operated one.
    Ian.

  3. #3
    Join Date
    Aug 2012
    Posts
    181

    Re: Plastic Injection

    That's how Injection Molding works. Not Design FOR injection molding.
    What I know is that you need to have at least a small draft angle (no vertical walls) to be release the part of them mold, make use of camfers and be careful about warping.

  4. #4
    Join Date
    Jun 2006
    Posts
    3063

    Re: Plastic Injection

    Marcus - take a look here:

    https://www.protolabs.com/resources/design-tips/

    and at the other topics in their Resources Tab.

  5. #5
    Join Date
    Aug 2012
    Posts
    181

    Re: Plastic Injection

    Quote Originally Posted by MichaelHenry View Post
    Marcus - take a look here:
    I didn't ask. stiffethomas did.

  6. #6
    Join Date
    Jun 2006
    Posts
    3063

    Re: Plastic Injection

    Oops - sorry for the misquote!

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