Guide rail mechanism for molding and expulsion of negatives is used in injection molds

摘要

The guide rail mechanism for molding and expulsion of negatives is used in injection molds. It incorporates a movable expeller plate (1) and has a shaft (3) fixed perpendicularly to the expeller plate and which terminates in a bolster (4) which impels longitudinally a wedge (2) in which is defined a geometry to be reproduced in a negative to be molded. The wedge is located in a cavity during the molding phase. In consequence of the rise of the expeller plate, the wedge is raised and displaced transversally until the negative is extracted.