Patent ID: 9321205
Filing Date: 2016-04-26
CPC Classification: B29C

Claim Text:
1. An injection molding system comprising: an injection machine and a fluid distribution system that injects a heated fluid material through an upstream end of a fluid delivery channel towards a downstream end of the fluid delivery channel towards a gate to a cavity of a mold; an elongated valve pin having a longitudinal axis and a proximal end interconnected to an actuator that is controllably drivable to move the pin back and forth along its longitudinal axis between one or more upstream axial positions and one or more downstream axial positions; an elongated rail having a rail axis, the rail being stationarily mounted relative to the actuator such that the rail axis is radially spaced apart from the axis of the valve pin; a finger projecting between the rail and the valve pin, the finger having a first end mounted on or to one of the rail or the valve pin and a second end slidably engaged against a receiving surface of the other of the rail or the valve pin; wherein the second end of the finger and the receiving surface against which the second end of the finger is engaged are adapted to resist or prevent rotation of the valve pin around the axis of the valve pin.