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Today, I'd like to share with you our fully automatic bench top size plastic injection machine, which my brother and I designed together. We started by limiting ourselves to the materials that we could use when designing the machine, and we worked our way up from there. Despite the fact that we would do some things if we had access to what we needed and that we would require different things in different ways, here is a rendering of our design to give you an idea of what we're talking about. Also, we did some actual design work, and then we machined all of the raw steel on our DIY CNC machine. You can see a video of our DIY CNC machine in the description below.
We then assembled the machine in only two days, with my favorite part being the universal pin plate, which worked flawlessly. The rest of the parts were also assembled according to plan, and we then had to make some random test plastic injection molding services, which also went according to plan. I knew that making an injection mold from scratch would take a long time, so I chose to use an old project of mine to create a quick and low-quality aluminum mold; these were specific electronic circuit board housings. I also 3D printed these injection molding, and even though I knew that they would not survive the high temperature and pressure mixture, I thought it was worth a try, and now we have we performed a very quick ejector pin test to ensure that our mold pieces were lined up correctly; the mold springs
Because of this, I could only put the melt in the plastic blow mold immediately before we finished making them, we wanted to give them a nice sandblasted coating our next step, of course, was to take care of the electrical and electronic aspects of the project we built our own custom small case and chose to use a Raspberry Pi as the brain of the machine for the machine then we wrote Python code to create our own user interface and run the programA 10-touch screen has been added to the controller to make it easier to use. This has made the machine more user friendly. Once the code had been compiled, we were ready to run some tests, but first, let's take a look at what the finished machine looked like up close. Take note that the has been anodized in red; this is due to the anodizing we performed in our anodizing video, which you can view here. Please see the description below for more information. The rest of the machine is complete and ready to use; we simply powered everything up and performed an ejection test to ensure that everything was aligned, which it was, and it was. This is our completed fully automatic garage-sized plastic injection molding machine, the model number is.
We can use any plastic starting from here with the original plastic pellets, but we're going to use ABS for the time being. These plastics move from the hopper into a reciprocating screw driven by a geared stepper motor, and as the plastic passes through the reciprocating screw chamber, it is heated by these band heaters, and as the plastic is plasticized, it passes through a check valve into the injection chamber, and as the plastic fills up this chamber, it is removed from the machine and disposed of properly. The floaty circle will move all the way to the back of the stage. When the limit switch is pressed, the plunger will begin to inject. . Following that, the injection will take place. When the injection takes place, the plastic will flow into the mold in a straight line, and once the cavity has been completely filled, the ABS Injection Molding will be removed. Notice how the pin will push the plastic piece out of its socket. Extruding the plastic piece will repeat itself, and our entire injection molding machine is prepared to run as many cycles as the mold is capable of handling now we have a custom control section, which is a graphical user interface written entirely in Python, which will run all of the functions we wrote to automate this machine, so let's go ahead and try it out, it's going to be a lot of fun just quickly go ahead and try it out it's going to be fun just quickly
Describe the operation of our user interface. Then you select how far you want the motor to travel (motor travel) and then press set, and the machine knows exactly where it's going to take the mold. You can also select your eject distance, and the interface will tell you how much plastic you've chosen to be ejected. Simply press the cycle start button to begin filling the injection chamber with material. The plastic mold will then close until it is in the predetermined position we've designated for testing here, and the injection will take place as a result of this action. This fully automatic tabletop sized plastic injection machine is equipped with two massive three horsepower motors for injection, dual stepper motors for clamping 30mm ball screws, and most importantly, it is powered entirely by electrical energy. If you like our build, please like and share this video. Otherwise, please check back for more similar content.
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