초록 ▼

This invention relates to a valve gated injection molding system having an improved rocker arm assembly connected between the valve pin and the actuating mechanism. The rocker arm assembly includes an elongated rocker arm which is pivotally mounted in a groove in a cylindrical support member. The ro

This invention relates to a valve gated injection molding system having an improved rocker arm assembly connected between the valve pin and the actuating mechanism. The rocker arm assembly includes an elongated rocker arm which is pivotally mounted in a groove in a cylindrical support member. The rocker arm assembly is removably received in a bore in the mold bore and the rocker arm is disconnectable from the valve pin, whereby the rocker arm assembly is quickly and easily replaceable without disassembly of the mold.

대표청구항 ▼

In a valve gated injection molding system having at least one heated nozzle seated in a mold core, the nozzle having a bore in alignment with a gate extending from a melt passage to a cavity, a rocker arm assembly with a pivoted rocker arm, said rocker arm having inner and outer elongated ends, an e

In a valve gated injection molding system having at least one heated nozzle seated in a mold core, the nozzle having a bore in alignment with a gate extending from a melt passage to a cavity, a rocker arm assembly with a pivoted rocker arm, said rocker arm having inner and outer elongated ends, an elongated valve pin having a driven end and a tip end, the valve pin extending through the bore of the nozzle with the driven end being operatively connected to the inner end of the rocker arm and the outer end of the rocker arm being operatively connected to a valve pin actuating mechanism, whereby the valve pin is reciprocated between a retracted open position and a closed position wherein the tip end of the valve pin is seated in the gate, the improvement wherein; the rocker arm assembly comprises a rocker arm support member and the elongated rocker arm being pivotally mounted on the support member, the rocker arm asssembly being mounted in a bore in the mold, said bore having an inner and an outer end, the rocker arm being disconnectable from the valve pin and the actuating mechanism, and the rocker arm assembly being removably received through the outer end of the bore, whereby the rocker arm assembly can be replaced without disassembly of the mold.