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

B - Operations, Transporting

29

C

18/680

B29C 45/18 (2006.01) B29C 31/10 (2006.01) B29C 31/02 (2006.01)

Patent

CA 1216116

A B S T R A C T 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 assem- blies 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 trans- verse guide plate has a central charge bore coinciding with the operating position of the hoppers and equidistant evacua- tion 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 capabi- lities.

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