A Vertical Micro-injection Machine

A vertical micro-injection machine includes a plasticizing unit, in which a feeding channel is provided and a screw or a plunger for transporting the molten material is provided in the feeding channel; an injection unit adapted to receive a metered amount of molten material from the plasticizing unit; an injection mold adapted to receive the metered amount of molten material from the injection unit; at least two thrust cylinders adapted to close the injection mold before injection and open the injection mold after injected parts solidified; and the injection unit includes an injection cylinder, the injection cylinder is connected with the feeding channel of the plasticizing unit, and a vertically reciprocating plunger is provided in the injection cylinder, which can expel air above the molten material in the injection cylinder by its upward advancement and then push the molten material into the injection mold. The vertical micro-injection machine according to the invention can eliminate the need for valves, avoids air entrapment in the molten plastic, provides a very high speed injection and reduces dead zones in the injection process that trap and degrade the material quality.

Japan

Inventor: RONG Q L
Priority Number: JP04913052B2
IPC Current: B29C004554 | B29C004577
Assignee Applicant: The Hong Kong Polytechnic University
Title: Perpendicular|vertical micro injection molding machine
Usefulness: Perpendicular|vertical micro injection molding machine
Summary: For molding micro-parts (claimed), intricate parts, or micro component parts.
Novelty: Vertical micro-injection machine for molding micro-parts, includes injection unit having injection cylinder connected with feeding channel of plasticizing unit, and vertically reciprocating plunger provided in the injection cylinder

Robot/Machinery

YUNG K.L.

USA