Injection Machine Quick Connect Upgrade
This How-To will show you how to upgrade your injection machine and molds to make your injection process faster, safer, and more efficient! This trick works on any injection mold that have a threaded connection to the machine nozzle. Install a brass garden hose connector and voilà!
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1
The problems with injection
The injection machine is a great tool to raise awareness about plastic pollution and demonstrate the plastic recycling process.
However if you need to produce many parts, the process can be a little tedious and wasteful:
-Threaded Connection ---> Often get clogged up by molten plastic, making the assembly difficult and require cleaning between each cycle
-Hard to demold ---> Mold connector creates undercut shapes and is hard to demold
Here are the specifications that the upgrade system must achieve:
1- Allow molds to be attached and detached from the machine in 1 movement
2- Reduce uncomfortable position for the operator
3- Reduce production waste
4- Be usable with gloves easily
5- Reduce cycle time
6- Revoke the need for a plug
7- Do not require cleaning between each cycle
The trick is to use a brass garden hose connector, available in gardening and home improvement store, to easily connect your mold ans be more efficient!
2
Bill of materials:
You'll need :
1 - ¾ inch female brass garden hose connector with threads
2 - ½ inch male brass garden hose connector (or any other size depending on what fits on your mold), with INSIDE threads
1- ½ inch brass endcap
1 - 1 cm long piece of M14 threaded rod (or a 14mm diameter round)
1- 10mm drill bit
ATTENTION: Buy the right hardware! See pictures
3
Assembly
For this step you will need a drill and a vise or even better a drill press .
1- Drill a 10 mm hole trough the piece of M14 threaded rod
2- Place this part inside your mold ½ connector, it should fit inside and fill the space.
3- Screw the male connector on top of it
4- Drill with the 10 mm drill trough all the parts to enlarge the hole diameter.
5- Take the second male connector and screw it to the endcap --> Here's your new plug :) .
4
No more undercut!
The piece of rod is here to fill the space inside the ½ inch connector. The molten plastic then flows trough the 10 mm round channel, and the sprue can be pulled out from the mold easely!
If you forget the spacer
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