Equipment for the injection molding of spectacles bars of plasti

Details Equipment for the injection molding of spectacles bars of plasti Equipment for the injection molding of spectacles bars of plasti

1981-11-10

1983-02-15

Flint, Jr., L. Howard

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

425129R, B29F 100, B29C 600

Patent

active

043738842

ABSTRACT:
The present invention relates to equipment for the injection molding of spectacles bars of plastic material and for the introduction in said bars of metal stems or cores. In said equipment, the metal core--onto an end of which is previously welded the respective metal hinge--is axially inserted into the mold already filled with plastic material, wherein it is caused to slide along a grooved guide, into which it is held by means apt to be removed as the core moves forward.

REFERENCES:
patent: 1152249 (1915-08-01), Wells
patent: 3135993 (1964-06-01), Ryan
patent: 3266100 (1956-08-01), Belanger
patent: 3387334 (1968-06-01), Belanger et al.
patent: 3531869 (1970-10-01), Hays et al.
patent: 4144010 (1979-03-01), Fenner
patent: 4161060 (1979-07-01), Lenne et al.

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