encrustingacro
2500 Club Member
From what I know, conventional injection molding cannot manufacture the interior geometries that Loc-Line fittings need in order to clip together. Can any engineers or manufacturing experts help me out? Thanks.
How are Loc-Line fittings manufactured?
- Thread starter encrustingacro
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The exterior is formed with a mold (tool) that splits in half along the axis of the part. If you look closely at a link you'll see a thin line that is the parting line where the tools halves come together.
The interior is most likely done with a core pin that comes in from each end. The slight undercut on the interior where it snaps over the next link might simply be forced off the tool, but is quite likely done with a collapsible core pin that is made up of multiple parts so the part can be ejected easily.
Edit:
Found a youtube video showing a collapsible core pin:
The interior is most likely done with a core pin that comes in from each end. The slight undercut on the interior where it snaps over the next link might simply be forced off the tool, but is quite likely done with a collapsible core pin that is made up of multiple parts so the part can be ejected easily.
Edit:
Found a youtube video showing a collapsible core pin:
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encrustingacro
2500 Club Member
I see now; thank you. That actually explains a lot of how they can get cylindrical/parallel/90° surfaces on many injection-molded parts.
You can mold just about anything if you're willing to pay enough for the tool. However, most things are done with fairly simple tools. Lots of tricks to make complex geometries simpler to mold. Once you know, you see them in everything.
Could be...
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