El Tornillo Motor Injection Machine

This injection machine runs with a motor to save some labor and output more pressure to make more detailed products.

*For the first 6 months the build files will be available to Precious Plastic supporters on Patreon


Attachments

Resources

3D Files

  • 3D Step File: /files/cad/ETMINJ-1-0000.00-0.step - Preview
  • 3D Step File: /files/EL_TORNILLO_MOTOR_INJECTION_MACHINE_/EL TORNILLO MOTOR INJECTION MACHINE /1. 3D CAD (.f3z .step)/ETMINJ-1-0000.00-0.step - Preview
  • 3D Step File: /files/cad/ETMINJ-1-0000.00-0.step - Preview
  • 3D Step File: /files/EL_TORNILLO_MOTOR_INJECTION_MACHINE_/EL TORNILLO MOTOR INJECTION MACHINE /1. 3D CAD (.f3z .step)/ETMINJ-1-0000.00-0.step - Preview

Step 1 - Become a supporter to download

We're thrilled to announce the release of the Motored Injection machine, a collaboration between Precious Plastic and El Tornillo :handshake: This is a major milestone for the community!

Open sourcing a whole new machine doesn't come free unfortunately, the total costs was around 8.000€ (materials, time and transportation). For 6 months (until 20.10.2023), the full blueprint of the machine will be available to Precious Plastic supporters on Patreon. After, it will be free and open source on this how-to. Forever. For anyone.

Precious Plastic Supporter?

You can become a Precious Plastic supporter on Patreon for 7,5€ per month to support our work.

This will also give you:

  • badge on the community

  • early access (Youtube, posts, downloads)

  • voting power

  • social media crediting (Youtube & IG),

  • A badge and sticker

Step 2 - Machine description

Machine design:

Motor Injection Machine

Machine size:

Heigth: 195CM; Wide: 50CM; Large: 50CM

Machine cost:

In Colombia, Bill Of Material = COP$4,700,000

What makes your machine different to others:

This machine has a motor that will apply the pressure (versus a hand powered lever on older versions). It can be considered an upgrade to Precious Plastic Basic Injection Machine, available on the academy.

Compatible with:

This machine is suitable for injection moulds.

Type of plastic:

PP, HDPE, LDPE, PS

Step 3 - Tools needed

To build this machine, you will need:

– Turning (machining on a lathe)

– Milling (machining on a mill)

– General metalworking (cutting, drilling)

– Welding

– Advanced assembly work (require specific tools, measurement instruments and tolerances knowledge to align and assemble)

– General electrical work (wiring safety switch, temperature controllers…)

– Motor electrical work (wiring motor, contactor, overload protection…)

Step 4 - Build the machine!

Watch this video to find out how to build this machine!

Step 5 - Inject!

How to use the machine

  1. Turn on the machine and fill the barrel with plastic.

  2. For the first injection, wait 25 minutes since the machine was turned on and filled.

  3. Place the mould over the jack surface and press it against the nozzle tightly.

  4. Turn on the motor to move down the piston, pushing the molten plastic inside the mold until the belt starts slipping in the pulley.

  5. Turn off the motor and wait around 5 seconds maintaining the piston pressure.

  6. Then turn the motor backwards to move the piston up

  7. For continuous injections refill the barrel before removing the mold from the nozzle

  8. Remove the mold by lowering the jack

  9. Open the mold and take out the injected part

  10. Close the mold and repeat the process from step 3

Recommendations

For this machine, you will need molds that have a connical nozzle connection or create an adapter to fit with you mold nozzle. This machine can create a lot of pressure so you will be able to inject products with very thin walls.

Step 6 - Buy on the Bazar

So this is how you make a Motor Injection Machine!

If you cannot replicate the machine or simply want to buy some of the other machines or moulds I create, make sure to visit my Bazar shop :money_mouth_face: !

https://bazar.preciousplastic.com/machines/injection/injection-fully-built/motor-injection-machine/

Added hdpe, ldpe, Precious Plastic, ps, injection, melting, oa-import

Added hdpe, ldpe, Precious Plastic, ps, oa-import and removed ldpe, Precious Plastic, ps

Added hdpe, ldpe, Precious Plastic, ps, injection, oa-import and removed hdpe, ldpe, Precious Plastic, ps

Added hdpe, ldpe, Precious Plastic, ps, injection and removed hdpe, Precious Plastic, ps

Added hdpe, ldpe, Precious Plastic, ps, melting and removed hdpe, ldpe, ps

Added hdpe, ldpe, Precious Plastic, ps, injection and removed hdpe, ldpe, ps