US 12,246,476 B2
Nozzle with removable nozzle tip configured for improved heating
Edward Joseph Jenko, Essex, VT (US); James Osborne Plumpton, Enosburg Falls, VT (US); and Thomas Andrew Lawrence, Burlington, VT (US)
Assigned to Husky Injection Molding Systems Ltd., Bolton (CA)
Appl. No. 17/255,992
Filed by HUSKY INJECTION MODLING SYSTEMS LTD., Bolton (CA)
PCT Filed Jun. 20, 2019, PCT No. PCT/US2019/038150
§ 371(c)(1), (2) Date Dec. 23, 2020,
PCT Pub. No. WO2020/005691, PCT Pub. Date Jan. 2, 2020.
Claims priority of provisional application 62/689,343, filed on Jun. 25, 2018.
Prior Publication US 2021/0122095 A1, Apr. 29, 2021
Int. Cl. B29C 45/27 (2006.01); B25B 13/50 (2006.01); F16D 41/07 (2006.01)
CPC B29C 45/278 (2013.01) [B25B 13/5008 (2013.01); B29C 45/2737 (2013.01); B29C 2045/274 (2013.01); B29C 2045/2772 (2013.01); F16D 41/07 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An injection molding machine comprising:
a nozzle for transferring melt to a mold cavity, the nozzle comprising:
a nozzle housing defining an exterior surface, the nozzle housing including threading along the exterior surface;
a nozzle tip defining an interior surface, the nozzle tip including threading along the interior surface that matingly engages the threading on the nozzle housing such that 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 aligns to form a single cylinder comprising a continuous cylindrical surface when the nozzle tip is threadably attached to the nozzle housing, wherein the nozzle tip does not include a torque means to facilitate assembly and removal of the nozzle tip;
a tubular heater enclosing exterior walls of nozzle tip and nozzle housing portions of the cylinder, wherein the nozzle tip does not include a torque means in any location that is downstream of the tubular heater and upstream of a mold gate of the nozzle; and
an engagement tool for attaching or detaching the nozzle tip to the nozzle housing, the engagement tool comprising:
a clutch for engaging the cylindrical surface; and
a torque feature attached to the clutch.