Husky Injection Molding Systems Limited

Robert Ilmonen

Alex Teng

John Robert Galt

Ronald Ing

Harold Godwin

William James Jacovich

Jeffrey Douglas MacDonald

Alireza Mortazavi

Denise Davina Craig

Geoffrey Andrew Gow

Jacques Bourque

The present invention provides an improved extruder assembly, that includes a wiper for wiping a screw portion in a low pressure extruder stage, whereby the wiping of the screw portion improves melt conveyance through the low pressure extruder stage. The present invention has particular utility when used in a low pressure venting and entrainment extruder stage of a single screw compounding extruder. The present invention also provides an extrusion/injection unit for use in-line compounding molding system that incorporates the improved extruder assembly.

Extruder assembly

A seal for a check valve for a metal molding machine. The seal is provided by the combination of a peripheral groove in an outer surface of the check valve and a helically wound core in the groove. The helically wound coil is expandable into sealing engagement with a cylindrical wall of the molding machine. The helically wound coil may be movable laterally in the groove between a melt channel open position and a melt channel closed position to open or seal the melt channel.

Check valve with a spiral coil seal

A check valve for a molding machine. The check valve has a stem portion and a ring portion movable along said stem portion between a melt channel open position and a melt channel closed position. A groove is formed in a forward face of the ring portion. The groove, in operation, receives melt to force an outer circumferential portion of the ring in a radial direction to provide a seal between the ring portion and a wall in the machine.

Check valve lip seal for an injection molding machine

A screw tip for use in a molding system apparatus is disclosed. The screw tip includes a connection section and screw tip head section. The screw tip head houses an entry port, or entry ports, an accumulation chamber, and a check valve chamber. A check valve is provided when assembled with the screw tip. The check valve may be a cylindrical plate or a spherical member or a conical member.

Screw tip and molding system apparatus

The present invention relates to a cooling device to be used with an index molding machine having a rotary turret block with at least two movable mold halves thereon. The cooling device includes a frame attached to a support for the rotary turret block, cooling tubes for receiving and cooling at least one molded part, which cooling tubes are mounted to a surface of a carrier plate connected to the frame, and an actuation device for moving the carrier plate between a first orientation where the cooling tubes are aligned with the at least one molded part and a second orientation where the at least one molded part cooled within the cooling tubes. In a preferred embodiment of the present invention, the cooling device also includes at least one blowing tube for blowing cool air onto the at least one molded part.

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Mississauga, Canada

Robert Ilmonen