Injection molding system with improved pressure bushing

Details Injection molding system with improved pressure bushing Injection molding system with improved pressure bushing

1998-02-24

1999-11-30

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With coupling between charger and mold

B29C 4517

Patent

active

059931906

ABSTRACT:
A molding system including an injection molding machine, particularly an electric injection molding machine, with an extrusion nozzle coupled to a hot tip system by an improved pressure bushing. The pressure bushing has a passage therethrough with an inlet and an extrusion nozzle seating surface disposed thereabout on an inlet side of the pressure bushing. The pressure bushing passage includes an outlet coupled to the hot tip system. The pressure bushing passage has a relatively reduced diameter and a reduced axial dimension that eliminate or at least substantially reduce ejecta from the coupling between an extrusion nozzle of the molding machine and the pressure bushing without freeze-out.

REFERENCES:
patent: 4285660 (1981-08-01), Mueller
patent: 4340156 (1982-07-01), Mueller
patent: 4580037 (1986-04-01), Muller
patent: 4609341 (1986-09-01), Muller
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patent: 4689473 (1987-08-01), Muller
patent: 4692595 (1987-09-01), Muller
patent: 5051563 (1991-09-01), Muller
patent: 5150125 (1992-09-01), Muller
Cincinnati Milacron, (Brochure) "RoboShot, All Electric Injection Molding Machines", 1997, pp. 1-30.

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