Dual-hopper injection unit for injection molding machine

Details Dual-hopper injection unit for injection molding machine Dual-hopper injection unit for injection molding machine

1983-07-28

1986-12-16

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Feed control of material en route to shaping area

2221445, 366 76, 366177, 425578, 425583, B29C 4518

Patent

active

046294104

ABSTRACT:
A dual-hopper supporting structure for the injection unit of an injection molding machine which has a transverse horizontal guide plate slidingly guiding a hopper carriage. To the upper side of the latter are bolted the base assemblies of two raw material hoppers, as well as a translation drive motor with a pinion which engages a drive rack on a longitudinal edge of the transverse guide plate. The transverse guide plate has a central charge bore coinciding with the operating position of the hoppers and equidistant evacuation bores in the two waiting positions of the hoppers. In addition to speeding up changeovers in the production setup, the novel structure gives the injection unit marbling capabilities.

REFERENCES:
patent: 4251204 (1981-02-01), Hehl
patent: 4266694 (1981-05-01), Hehl
patent: 4304493 (1981-12-01), Frankie
patent: 4397630 (1983-08-01), Meeker
patent: 4418844 (1983-12-01), Hehl
patent: 4418845 (1983-12-01), Hehl

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