Plastic end capping machine

Claim 1

An end capping machine for making an integral, wide mouth container, said machine comprising a head having means to rotatably index said head at a plurality of stations; a plurality of core rods mounted on and outwardly disposed from said head so as to be indexed at said stations, said stations comprising a first station comprising means to load sleeves on said core rods, a second station comprising means to injection mold a thermoplastic end cap on first ends of said sleeves so as to form containers, and a third station comprising means to unload said containers, further comprising a core rod onto which said sleeve is inserted, said core rod being disposed within the mold, said core rod further comprising an annular member disposed around the periphery of the core rod and extending radially outwardly from said core rod and being formed on one portion to engage the other end of the sleeve so as to take up the thrust of the injection molding of thermoplastic onto the sleeve, said mold comprising partible sections and means to open and close said partible sections, whereby said sleeve is held on said core rod between the closed partible sections, said mold sections being formed with recessed portions so as to contactingly engage said annular member, said member being formed with a second portion so as to comprise seating means for said partible mold sections, said mold being formed with an annular portion disposed radially outwardly from said one end of said sleeve so as to provide a cavity at both the first end and outside periphery of said sleeve adjacent said first end, whereby thermoplastic flows into the cavity and around the first end of said sleeve so as to be formed and bonded to the sleeve, thereby providing an integral wide-mouth container at said second station.