Husky Injection Molding Systems Limited

Thomas Andrew Lawrence

Abdeslam Bouti

Stephen Linwood Gray

Edward Joseph Jenko

Stefan Von Buren

James Osborne Plumpton

Jim Pilavdzic

Sohail Mohammed

Tomasz Uracz

Andre Axel Kromberg

Douglas R Leblanc

Charles Edward Farmer

Troy Richard Mercer

Charles Farmer

The present application describes injection molding machines and, more particularly, a removable nozzle tip and nozzle assembly for use with an injection molding machine and an engagement tool and methods for replacing a nozzle tip. In an aspect, an injection molding machine may include a nozzle. The nozzle may include a nozzle housing and a nozzle tip threadably attached to the nozzle housing. At least a portion of an exterior wall of the nozzle housing and at least a portion of an exterior wall of the nozzle tip may align to provide a cylindrical surface. The injection molding machine may further include a tubular heater enclosing at least a portion of the continuous cylindrical surface. The nozzle tip does not include a torque feature in any location that is downstream of the tubular heater and upstream of a mold gate of the nozzle.

Nozzle with removable nozzle tip configured for improved heating

A mold-tool system (), comprising: a nozzle position-adjustment assembly () being configured to selectively adjust position of a nozzle assembly () between: (i) a nozzle-loaded position, and (ii) a nozzle-unloaded position.

Mold tool system having a nozzle position adjustment assembly

Disclosed is a safety connector () for a hot runner () having a valve stem () and an actuation assembly (), the safety connector () including: a shear member () releasably interlocking the valve stem () with the actuation assembly (), once the shear member () has interlocked the valve stem () with the actuation assembly (), the valve stem () becomes movable in response to movement of the actuation assembly (), and the shear member () being configured to shear destructively, and responsive to a predetermined undesired force acting on the shear member (), the shear member () shears and the valve stem () becomes released from the actuation assembly ().

Safety connector for hot runner, having latch destructively interlocking valve stem with actuation plate

A cam and cam follower apparatus translates linear cam bar movement to perpendicular valve stem actuation in an injection molding system. The cam bars reciprocate up and down on linear bearing rails such that an actuation plate, fitted with a plurality of valve stems, is cycled normal to the direction of the cam bar movement via cam followers traveling within cam slots in the cam bars. The cam slots in the cam bars are profiled such that the cam followers affect the speed and force at which the valve stems travel while at the same time reducing frictional effects and their associated power requirement. The cam followers of the valve stem actuation plate travel in cam slots in the cam bars from a valve stem forward position, to a valve stem retracted position and ultimately, the entire actuation plate may be removed from the cam bars for maintenance via open ended slots in the cam bars.

Cam apparatus for valve stem actuation

Disclosed is a safety connector for a hot runner having a valve stem and an actuation plate, the safety connector including: (i) a latch releasably interlocking the valve stem with the actuation plate so that in response to movement of the actuation plate, the valve stem becomes movable; and (ii) a latch mover being cooperative with the latch, and the latch mover being configured to move the latch responsive to a predetermined force acting on the valve stem so that so that the valve stem is released from the actuation plate.

Safety connector for hot runner, having latch releasably interlocking valve stem with actuation plate

An apparatus for retaining a heater on an injection molding nozzle comprises a retaining body configured to fit around the injection molding nozzle. The retaining body has two flanges extending inward. One is configured to be received in a groove in the injection molding nozzle; the other is configured to be received in a groove in the heater. An axial slot allows the retaining body to elastically spread outward. The retaining body also has at least one aperture that receives a thermocouple. The aperture is preferably an elongated hole having an axis parallel to a longitudinal axis of the retaining body. Preferably the heater is a thick-film heater and the thermocouple is installed adjacent one on the resistive elements of the thick-film heater. When the resistive elements produce different heat levels, the thermocouple is preferably installed adjacent the resistive element that produces the greatest heat.

Growing community of inventors

Burlington, VT, United States of America

Thomas Andrew Lawrence