Injection molding consists, after fluidifying by heating a thermoplastic material, to inject it under high pressure into a mold containing the indentation of a workpiece. This press designed for teaching can inject thermoplastic parts. A project can be to design a footprint under DAO, to realize it with a 3D prototyping machine and to test it with the press. The machine is directly operational. It comes with a metal mold and 10 kg of material.
The system is composed of :
- A frame that sits on the machine with 4 legs on a table or bench
- A protective casing A heating device regulated in temperature
- An injection system for introducing the pressurized material by manually operated injection screw
- A mobile platform that carries the ejection battery adaptable to the different impressions made
- Two columns that guide the mobile platform in translation
- A flywheel for closing and opening the mold
- A fixed tray
- A cooling circuit with water reserve for the fixed plate and the power supply
- A cylindro-conical stainless steel feed hopper for granulated material
- An automaton with screen allowing the visualization and the modification of the parameters of injection and the control of the injection cycle
- Three test protocols are proposed and modifiable
- Two temperature controllers control the injection temperature in both zones
The different parameters are:
- Injection temperature of the material in two zones
- torque limiter / injection time
- Mataining time
- Decompression time
- Cooling time
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