Adjustable valve pin actuator for an injection molding...

Details Adjustable valve pin actuator for an injection molding... Adjustable valve pin actuator for an injection molding...

B - Operations, Transporting

29

C

B29C 45/17 (2006.01) B29C 45/20 (2006.01)

Patent

CA 2521406

An actuator for a valve pin of an injection molding apparatus includes an adjustment piece coupled to a valve pin via a connector and axially movable relative to a piston to adjust an axial position of the valve pin relative to a mold gate. A removable locking device restricts axial movement of the adjustment piece with respect to the piston. An indicator is provided for determining the position of the valve pin relative to a mold gate based on the position of the adjustment piece with respect to the piston. An anti-rotation device is provided to inhibit rotational movement of the valve pin. During maintenance, the actuator piston and adjustment piece may be extracted with or without the valve pin. The actuator may be reassembled with correct axial position via the piston/adjustment piece relationship and correct rotational position of the valve pin via the anti-rotation device.

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