| 摘要 |
A plasticizing unit for micro injection molding machine, associated with an injection machine, is comprised of a housing and a disk-like rotor, wherein the disk-like rotor is installed inside the housing and kept rotating continuously. When plastic or resin pellets is fed into the housing from an inlet, a heating and mixing process is performed between the disk-like rotor and the inner wall of the housing; and then, the pellets would be transferred into a molten state as non-Newtonian fluid; therefore, while the first vertical normal force in the fluid is greater than the centrifugal force thereof, the molten fluid shall not moves outwardly but would flow inwards to the center of the disk-like rotor by rod climbing effect; therefore, an extrusion pressure would be built up at the disk-like rotor center, by which the molten and well mixed plastic or resin can be delivered from the outlet of the housing to the heating cylinder of the micro injection molding machine, injection molding can be completed through an injection plunger.
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