20080280082 | Injection Co-Molding and Assembling Method and Apparatus for Articles Made of Plastic Material Having Parts Connectable by Hinging During a Demolding Step - Method and apparatus for injection co-molding and assembling of articles made of plastic material, the articles having a first part provided with a hinge pin, and a second part provided with an annular element designed to be connected to each other by hinging. The apparatus includes a mold having separate mold impressions for two parts of the article to be produced; a first molding member, defining the impression of the pin, and a second molding member, defining the impression of the annular element, are axially movable and operatively connected to cam control elements forming part of the same injection mold. The cam control elements are shaped and arranged in such a way as to cause, after the opening of the mold, the automatic assembling of the plastic article, via a selective sequence of axial movements of the two molding members, during the demolding step of the molded article. | 11-13-2008 |