公开(公告)号：US10882233B2

公开(公告)日：2021-01-05

申请号：US15773824

申请日：2016-11-14

Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.

Inventor： Stephen Daniel Ferenc ,  William Steven Keir ,  Brandon Douglas White

IPC: B29C45/28 ,  B29C45/84

Abstract: An apparatus and method for actuating a valve stem between an open position and a closed position and for taking one or more valve gated nozzle out of service is disclosed. The hot runner includes a valve gated nozzle having a valve stem, the valve stem coupled to a piston that is held against an actuation plate via pressurized air. When a valve stem becomes stuck in a gate of the hot runner, the actuation plate can continue to move while the piston remains stationary. The valve stem may also be protected from an over force situation such as if the valve stem encounters an obstruction as the actuation plate is moving toward the closed position.

公开(公告)号：US11667066B2

公开(公告)日：2023-06-06

申请号：US17099858

申请日：2020-11-17

Applicant: HUSKY INJECTION MOLDING SYSTEMS LTD.

Inventor： Stephen Daniel Ferenc ,  William Steven Keir ,  Brandon Douglas White

IPC: B29C45/28 ,  B29C45/84

CPC classification number: B29C45/281 ,  B29C45/84 ,  B29C2045/2813 ,  B29C2945/76752

Abstract: An apparatus and method for actuating a valve stem between an open position and a closed position and for taking one or more valve gated nozzle out of service is disclosed. The hot runner includes a valve gated nozzle having a valve stem, the valve stem coupled to a piston that is held against an actuation plate via pressurized air. When a valve stem becomes stuck in a gate of the hot runner, the actuation plate can continue to move while the piston remains stationary. The valve stem may also be protected from an over force situation such as if the valve stem encounters an obstruction as the actuation plate is moving toward the closed position.