Injection molding actuator position sensing

Details Injection molding actuator position sensing Injection molding actuator position sensing

2011-04-05

2011-04-05

Heitbrink, Tim (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

C425S151000, C425S564000

Reexamination Certificate

active

07918660

ABSTRACT:
A nozzle has a valve pin for controlling flow of molding material through a nozzle melt passage. An actuator has a stationary part and a movable part. The actuator further has an extending rod connected to the movable part thereof and a block connected to the rod, the block being movable with the moveable part of the actuator. A pivoting linkage element is rotatably connected to the block of the actuator and is connected to the valve pin of the nozzle. The pivoting linkage element moves the valve pin in response to movement of the movable part of the actuator. A bracket is connected to the stationary part of the actuator. Two sensors are connected to the bracket for detecting different positions of the block. The sensors may be air proximity sensors.

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