How to ensure the quality of Micro Injection Molding?
Special "Reverse screw"
Arburg has teamed up with IKV and RWTH Aachen University to develop a micro-injection device.
As the force acting on the plunger is smaller than the plasticized screw, so it can made more compact plasticizing system , especially for micro-injection molding.
The plunger diameter is smaller and the injection molding process can be controlled more effectively.
Last year, Arburg demonstrated a special micro-production unit based on the Allrounder 270A at its technology section, using a new Euromap size 5 micro-injection unit in the injection molding machine.
8mm reciprocating screw plasticizing unit
Another German company Boy is known as micro-injection solutions, also exhibited its 8mm reciprocating screw plasticizing unit for the first time in 2015.
At Fakuma 2015, Boy demonstrated a miniature bone cementing plate on a BOY XS injection molding machine with an injection volume of only 0.06 cm3 and a component weight of 0.078 g.
BOY XS spiral groove volume of only 1.9cm3.
Stable direct drive
For the micro-injection molding, Sumitomo Demag offers all-electric drive SE30DUZ.
At the NPE 2015, Demag demonstrated a polyoxymethylene (POM) gear, which plays a key role in a unique cataract surgery device developed by Eye Care and Cure (ECC).
In the traditional injection molding process, the resin in the spiral rod and the barrel between the flow resistance will produce shear heat.
Two-stage injection unit
The main benefit of the MicroPower lies in its cost-efficiency. Through shorter cycle times and lower material and energy consumption, cost savings between 30 and 50 % can be achieved compared to standard machines. Processing of all injectable materials with shot volumes of up to 4 cm³.
The internal thread of the cartridge frame is formed by a threaded core, and the core is directly operated by the plunger of the injection molding machine.
The production process is carried out in clean room conditions by a Laminar Flow Box in the machine.