| 摘要 |
An injection molding machine valve gate nozzle (25) having a rack driven valve pin actuator (65) for moving a valve pin (50) between open and closed positions during each holding cycle of operation. The valve pin actuator is sealed from the fluid flow stream and the nozzle body has a valve pin guide (52) which substantially separates the melt stream from the valve pin during passage through the nozzle for enhanced long-term operation. The actuator has a modular construction which lends itself to economical manufacture and efficient use in multiple drop or single molding machines without modification.
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